Another good suggestion.

So far I have some local oscillator action on the 6A7 but it SEEMS to have no converted output and the first IF tuning doesnt appear to DO anything!! I turn the screws on the tuning caps on the top of the first IF and no changes!!I checked the continuity of the IF coils ohm-wise and they are OK.

Also for this second IF coil the tuning slug appears to be no more than a slug of metal which turns in or out into the coil, only in near proximity.Havent seen one wuite like this before. Thats how I lost the slug - it dropped right into the coil assembly as there is NO stop preventing this.

So I heard the LO running on a trans- sistor set up nearby for the purpose and thought I was starting to get something but no go - NO stations whatsoever.The demod tube doesnt appear to be giving me much at all.

I put my sig gen on 455 Kc with 1000 Hz modulation on the ouput of the 6A7 (input to the IF) and got A LITTLE audio pushed thru but VERY little with much distortion. I also re-activated the bias cell with H2O and still got very little . Perhaps due to the mis-tuning of the second IF?

I am going back to the drawing board tomorrow and fish out that slug on the second if and tune it with the sig gen connected at 455 Kc and see if I get SOMETHING to get thru. Then I will check that mica cap, which I did not yet substitute for - could be I am hearing the LO on the xistor but it may still be weak or off frequency.All other caps around the 6A7 are new.

I like the suggestion of using a separate receiver as an IF stage!!

What a DOG!!Normally at this point I would put the unit on a shelf and let it collect dust!!!!!

(Frustrated) Lou

:
:

: : : : : : : : : : : :Sir Lou. . . . : : :Since you JUST now clued me in on WHICH slug it was . . . . . . : : :In looking at the IF's on that unit and seeing . . .use of 2 tuned resonating coils in the first IF and 1 in the primary of the second IF. : : : :WITH the secondary of the second IF not being a combo L-C resonant circuit, just an RF coil (choke). : : : :I would think that with having that dropped slug being in the primary of the tuned circuit of the 2nd IF transformer it would be giving a somewhat blasé performance, even tuned into a STRONG incoming off the air station. : : :How about trying this: : : :Considering that you have a small AM pocket transistor radio . . . . : : :Take one each ~1-2 ft test lead with clip leads on ends. : : :One clip lead goes to the plate of the 6A7 which is feeding to the primary of the IF transformer or to that IF transformer if easier to access or clip onto. : : :Then the other end of the test lead wire gets formed into a capacitance loop that is just large enough to go around the transistor in the same plane which its internal ferri loop antenna is wound. : : :Just snap the free end clip back onto the insulation of the test lead in its center, such that it is holding the loop tightly around the radio, centered on that internal ferri-tenna for you. : : :Tune the transistor radio to the second harmonic of 455 khz . . . . . .910 khz. : : :VEWY-VEWY carefully, since those micro-mini DIRECT drive dials are not known to have ANY vernier action. : : :Then you do a combo of tuning in the "operating" Eastinghouse to a local powerhouse stations frequency and a slight check of the transitor, as you might not have exactly found 910 yet on its dial . . . yet. : : :Doing this test with an OPERATIONAL mixer stage , once you have zeroed in on the transistors tuning to 910 , will result in stations pouring in on the "Eastinghouses" tuning condensers settings just like a regular radio. : : :It is just using the IF strip, audio detection , af amplification and the speaker of the transitor radio . : : :There is then no longer a perceived ambiguity of the "mixer" section being at "fault" . : : : : : : : :73's de Edd : : : : : :People who complain about the way the ball bounces, usually dropped it. : : : : : : : : :

:
:
:
:
::Edd - round two
::
::All good suggestions..
::
::I have yet to retrieve the slug from the 2nd IF - I have to get in there - very cramped!!
::
::I just thought today that I would go after the caps - I think that is the last thing I can try there - I do have an LO ( local oscillator ) but no conversion.
::
::Thanks for the tips
::
::Lou:
:::
:::

::: ::: ::: ::: ::: ::: ::: ::: ::: ::: ::: :::Sir Lou. . . . ::: ::: :::Some exploratory . . . . . ?'s ::: ::: :::Are C7 and C8 new units, such that they can be eliminated as potential faults ? ::: ::: :::Assuming that you probably left C9 mica unit untouched. ::: ::: :::Also . . . . that pulling it for a subjective test under voltage for ANY leakage would be problematic . . . can you, instead, just lift one of it's lead ends and sub in a new generation 100pf silver mica unit ? ::: ::: ::: :::Have you retrieved the "errant" slug within the mentioned IF . . .repositioned . . . and are you now able to feed tone modulated 456 khz throughout the system? ::: ::: :::Will a "force fed" 1Mhz tone modulated signal feed thru the system in the middle of BCB. ::: ::: :::If not, how about passage of a like test signal in the middle of the short wave band, since the decrease in required wire on frontal RF coils makes them less failure prone. ::: ::: ::: ::: ::: ::: ::: :::73's de Edd ::: ::: ::: ::: ::: :::Teamwork is nice; since it then allows you to blame someone else. ::: ::: ::: ::: ::: ::: ::: ::: :::

:::
:::
:::
:::
:::
:::::In fact it is a 1 volt cell and I just tried activating it as Warren suggested at it works - so far I have appx. 0.8 V out of the cell.
::::
::::BUT something is still preventing the 6A7 converter in this radio from working. So far, a mystery.
::::
::::Lou
:::
:::
::::
:::::The bias cell is 3 volts. You do need this negative bias for the audio section to work.
:::::
:::::Without that bias, the tube is operating in some class of amplification known only to God. I wonder if a 3 Volt coin cell used in most everything today would fit into whatever holds your bias cell?
:::::
:::::
:::::Lewis
::::::
:::::
:::::
::::
::::
:::
:::
::
::
:
:

Well with a little retuning of the second IF I managed to get a nice clear 1000 Hz tone thru the IF stages, at 455 KHz.

I did your test with the external receiver - the mixer stage is not operating even though it does appear that the LO is there. So I am going to check the caps, especially that mica one and also the input network.

Lou

:
:

: : : : : : : : : : : :Sir Lou. . . . : : :Since you JUST now clued me in on WHICH slug it was . . . . . . : : :In looking at the IF's on that unit and seeing . . .use of 2 tuned resonating coils in the first IF and 1 in the primary of the second IF. : : : :WITH the secondary of the second IF not being a combo L-C resonant circuit, just an RF coil (choke). : : : :I would think that with having that dropped slug being in the primary of the tuned circuit of the 2nd IF transformer it would be giving a somewhat blasé performance, even tuned into a STRONG incoming off the air station. : : :How about trying this: : : :Considering that you have a small AM pocket transistor radio . . . . : : :Take one each ~1-2 ft test lead with clip leads on ends. : : :One clip lead goes to the plate of the 6A7 which is feeding to the primary of the IF transformer or to that IF transformer if easier to access or clip onto. : : :Then the other end of the test lead wire gets formed into a capacitance loop that is just large enough to go around the transistor in the same plane which its internal ferri loop antenna is wound. : : :Just snap the free end clip back onto the insulation of the test lead in its center, such that it is holding the loop tightly around the radio, centered on that internal ferri-tenna for you. : : :Tune the transistor radio to the second harmonic of 455 khz . . . . . .910 khz. : : :VEWY-VEWY carefully, since those micro-mini DIRECT drive dials are not known to have ANY vernier action. : : :Then you do a combo of tuning in the "operating" Eastinghouse to a local powerhouse stations frequency and a slight check of the transitor, as you might not have exactly found 910 yet on its dial . . . yet. : : :Doing this test with an OPERATIONAL mixer stage , once you have zeroed in on the transistors tuning to 910 , will result in stations pouring in on the "Eastinghouses" tuning condensers settings just like a regular radio. : : :It is just using the IF strip, audio detection , af amplification and the speaker of the transitor radio . : : :There is then no longer a perceived ambiguity of the "mixer" section being at "fault" . : : : : : : : :73's de Edd : : : : : :People who complain about the way the ball bounces, usually dropped it. : : : : : : : : :

:
:
:
:
::Edd - round two
::
::All good suggestions..
::
::I have yet to retrieve the slug from the 2nd IF - I have to get in there - very cramped!!
::
::I just thought today that I would go after the caps - I think that is the last thing I can try there - I do have an LO ( local oscillator ) but no conversion.
::
::Thanks for the tips
::
::Lou:
:::
:::

::: ::: ::: ::: ::: ::: ::: ::: ::: ::: ::: :::Sir Lou. . . . ::: ::: :::Some exploratory . . . . . ?'s ::: ::: :::Are C7 and C8 new units, such that they can be eliminated as potential faults ? ::: ::: :::Assuming that you probably left C9 mica unit untouched. ::: ::: :::Also . . . . that pulling it for a subjective test under voltage for ANY leakage would be problematic . . . can you, instead, just lift one of it's lead ends and sub in a new generation 100pf silver mica unit ? ::: ::: ::: :::Have you retrieved the "errant" slug within the mentioned IF . . .repositioned . . . and are you now able to feed tone modulated 456 khz throughout the system? ::: ::: :::Will a "force fed" 1Mhz tone modulated signal feed thru the system in the middle of BCB. ::: ::: :::If not, how about passage of a like test signal in the middle of the short wave band, since the decrease in required wire on frontal RF coils makes them less failure prone. ::: ::: ::: ::: ::: ::: ::: :::73's de Edd ::: ::: ::: ::: ::: :::Teamwork is nice; since it then allows you to blame someone else. ::: ::: ::: ::: ::: ::: ::: ::: :::

:::
:::
:::
:::
:::
:::::In fact it is a 1 volt cell and I just tried activating it as Warren suggested at it works - so far I have appx. 0.8 V out of the cell.
::::
::::BUT something is still preventing the 6A7 converter in this radio from working. So far, a mystery.
::::
::::Lou
:::
:::
::::
:::::The bias cell is 3 volts. You do need this negative bias for the audio section to work.
:::::
:::::Without that bias, the tube is operating in some class of amplification known only to God. I wonder if a 3 Volt coin cell used in most everything today would fit into whatever holds your bias cell?
:::::
:::::
:::::Lewis
::::::
:::::
:::::
::::
::::
:::
:::
::
::
:
:

We are sure the antenna section of the tuning condenser is not shorted.

:Edd:
:
:Well with a little retuning of the second IF I managed to get a nice clear 1000 Hz tone thru the IF stages, at 455 KHz.
:
:I did your test with the external receiver - the mixer stage is not operating even though it does appear that the LO is there. So I am going to check the caps, especially that mica one and also the input network.
:
:Lou
:
::
::

:: :: :: :: :: :: :: :: :: :: :: ::Sir Lou. . . . :: :: ::Since you JUST now clued me in on WHICH slug it was . . . . . . :: :: ::In looking at the IF's on that unit and seeing . . .use of 2 tuned resonating coils in the first IF and 1 in the primary of the second IF. :: :: :: ::WITH the secondary of the second IF not being a combo L-C resonant circuit, just an RF coil (choke). :: :: :: ::I would think that with having that dropped slug being in the primary of the tuned circuit of the 2nd IF transformer it would be giving a somewhat blasé performance, even tuned into a STRONG incoming off the air station. :: :: ::How about trying this: :: :: ::Considering that you have a small AM pocket transistor radio . . . . :: :: ::Take one each ~1-2 ft test lead with clip leads on ends. :: :: ::One clip lead goes to the plate of the 6A7 which is feeding to the primary of the IF transformer or to that IF transformer if easier to access or clip onto. :: :: ::Then the other end of the test lead wire gets formed into a capacitance loop that is just large enough to go around the transistor in the same plane which its internal ferri loop antenna is wound. :: :: ::Just snap the free end clip back onto the insulation of the test lead in its center, such that it is holding the loop tightly around the radio, centered on that internal ferri-tenna for you. :: :: ::Tune the transistor radio to the second harmonic of 455 khz . . . . . .910 khz. :: :: ::VEWY-VEWY carefully, since those micro-mini DIRECT drive dials are not known to have ANY vernier action. :: :: ::Then you do a combo of tuning in the "operating" Eastinghouse to a local powerhouse stations frequency and a slight check of the transitor, as you might not have exactly found 910 yet on its dial . . . yet. :: :: ::Doing this test with an OPERATIONAL mixer stage , once you have zeroed in on the transistors tuning to 910 , will result in stations pouring in on the "Eastinghouses" tuning condensers settings just like a regular radio. :: :: ::It is just using the IF strip, audio detection , af amplification and the speaker of the transitor radio . :: :: ::There is then no longer a perceived ambiguity of the "mixer" section being at "fault" . :: :: :: :: :: :: :: ::73's de Edd :: :: :: :: :: ::People who complain about the way the ball bounces, usually dropped it. :: :: :: :: :: :: :: :: ::

::
::
::
::
:::Edd - round two
:::
:::All good suggestions..
:::
:::I have yet to retrieve the slug from the 2nd IF - I have to get in there - very cramped!!
:::
:::I just thought today that I would go after the caps - I think that is the last thing I can try there - I do have an LO ( local oscillator ) but no conversion.
:::
:::Thanks for the tips
:::
:::Lou:
::::
::::

:::: :::: :::: :::: :::: :::: :::: :::: :::: :::: :::: ::::Sir Lou. . . . :::: :::: ::::Some exploratory . . . . . ?'s :::: :::: ::::Are C7 and C8 new units, such that they can be eliminated as potential faults ? :::: :::: ::::Assuming that you probably left C9 mica unit untouched. :::: :::: ::::Also . . . . that pulling it for a subjective test under voltage for ANY leakage would be problematic . . . can you, instead, just lift one of it's lead ends and sub in a new generation 100pf silver mica unit ? :::: :::: :::: ::::Have you retrieved the "errant" slug within the mentioned IF . . .repositioned . . . and are you now able to feed tone modulated 456 khz throughout the system? :::: :::: ::::Will a "force fed" 1Mhz tone modulated signal feed thru the system in the middle of BCB. :::: :::: ::::If not, how about passage of a like test signal in the middle of the short wave band, since the decrease in required wire on frontal RF coils makes them less failure prone. :::: :::: :::: :::: :::: :::: :::: ::::73's de Edd :::: :::: :::: :::: :::: ::::Teamwork is nice; since it then allows you to blame someone else. :::: :::: :::: :::: :::: :::: :::: :::: ::::

::::
::::
::::
::::
::::
::::::In fact it is a 1 volt cell and I just tried activating it as Warren suggested at it works - so far I have appx. 0.8 V out of the cell.
:::::
:::::BUT something is still preventing the 6A7 converter in this radio from working. So far, a mystery.
:::::
:::::Lou
::::
::::
:::::
::::::The bias cell is 3 volts. You do need this negative bias for the audio section to work.
::::::
::::::Without that bias, the tube is operating in some class of amplification known only to God. I wonder if a 3 Volt coin cell used in most everything today would fit into whatever holds your bias cell?
::::::
::::::
::::::Lewis
:::::::
::::::
::::::
:::::
:::::
::::
::::
:::
:::
::
::
:
:

I am going to check the caps around the 6A7 and if that doesnt work check the coil continuity ( again ).

:Lou,
:
:We are sure the antenna section of the tuning condenser is not shorted.
:
::Edd:
::
::Well with a little retuning of the second IF I managed to get a nice clear 1000 Hz tone thru the IF stages, at 455 KHz.
::
::I did your test with the external receiver - the mixer stage is not operating even though it does appear that the LO is there. So I am going to check the caps, especially that mica one and also the input network.
::
::Lou
::
:::
:::

::: ::: ::: ::: ::: ::: ::: ::: ::: ::: ::: :::Sir Lou. . . . ::: ::: :::Since you JUST now clued me in on WHICH slug it was . . . . . . ::: ::: :::In looking at the IF's on that unit and seeing . . .use of 2 tuned resonating coils in the first IF and 1 in the primary of the second IF. ::: ::: ::: :::WITH the secondary of the second IF not being a combo L-C resonant circuit, just an RF coil (choke). ::: ::: ::: :::I would think that with having that dropped slug being in the primary of the tuned circuit of the 2nd IF transformer it would be giving a somewhat blasé performance, even tuned into a STRONG incoming off the air station. ::: ::: :::How about trying this: ::: ::: :::Considering that you have a small AM pocket transistor radio . . . . ::: ::: :::Take one each ~1-2 ft test lead with clip leads on ends. ::: ::: :::One clip lead goes to the plate of the 6A7 which is feeding to the primary of the IF transformer or to that IF transformer if easier to access or clip onto. ::: ::: :::Then the other end of the test lead wire gets formed into a capacitance loop that is just large enough to go around the transistor in the same plane which its internal ferri loop antenna is wound. ::: ::: :::Just snap the free end clip back onto the insulation of the test lead in its center, such that it is holding the loop tightly around the radio, centered on that internal ferri-tenna for you. ::: ::: :::Tune the transistor radio to the second harmonic of 455 khz . . . . . .910 khz. ::: ::: :::VEWY-VEWY carefully, since those micro-mini DIRECT drive dials are not known to have ANY vernier action. ::: ::: :::Then you do a combo of tuning in the "operating" Eastinghouse to a local powerhouse stations frequency and a slight check of the transitor, as you might not have exactly found 910 yet on its dial . . . yet. ::: ::: :::Doing this test with an OPERATIONAL mixer stage , once you have zeroed in on the transistors tuning to 910 , will result in stations pouring in on the "Eastinghouses" tuning condensers settings just like a regular radio. ::: ::: :::It is just using the IF strip, audio detection , af amplification and the speaker of the transitor radio . ::: ::: :::There is then no longer a perceived ambiguity of the "mixer" section being at "fault" . ::: ::: ::: ::: ::: ::: ::: :::73's de Edd ::: ::: ::: ::: ::: :::People who complain about the way the ball bounces, usually dropped it. ::: ::: ::: ::: ::: ::: ::: ::: :::

:::
:::
:::
:::
::::Edd - round two
::::
::::All good suggestions..
::::
::::I have yet to retrieve the slug from the 2nd IF - I have to get in there - very cramped!!
::::
::::I just thought today that I would go after the caps - I think that is the last thing I can try there - I do have an LO ( local oscillator ) but no conversion.
::::
::::Thanks for the tips
::::
::::Lou:
:::::
:::::

::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: :::::Sir Lou. . . . ::::: ::::: :::::Some exploratory . . . . . ?'s ::::: ::::: :::::Are C7 and C8 new units, such that they can be eliminated as potential faults ? ::::: ::::: :::::Assuming that you probably left C9 mica unit untouched. ::::: ::::: :::::Also . . . . that pulling it for a subjective test under voltage for ANY leakage would be problematic . . . can you, instead, just lift one of it's lead ends and sub in a new generation 100pf silver mica unit ? ::::: ::::: ::::: :::::Have you retrieved the "errant" slug within the mentioned IF . . .repositioned . . . and are you now able to feed tone modulated 456 khz throughout the system? ::::: ::::: :::::Will a "force fed" 1Mhz tone modulated signal feed thru the system in the middle of BCB. ::::: ::::: :::::If not, how about passage of a like test signal in the middle of the short wave band, since the decrease in required wire on frontal RF coils makes them less failure prone. ::::: ::::: ::::: ::::: ::::: ::::: ::::: :::::73's de Edd ::::: ::::: ::::: ::::: ::::: :::::Teamwork is nice; since it then allows you to blame someone else. ::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: :::::

:::::
:::::
:::::
:::::
:::::
:::::::In fact it is a 1 volt cell and I just tried activating it as Warren suggested at it works - so far I have appx. 0.8 V out of the cell.
::::::
::::::BUT something is still preventing the 6A7 converter in this radio from working. So far, a mystery.
::::::
::::::Lou
:::::
:::::
::::::
:::::::The bias cell is 3 volts. You do need this negative bias for the audio section to work.
:::::::
:::::::Without that bias, the tube is operating in some class of amplification known only to God. I wonder if a 3 Volt coin cell used in most everything today would fit into whatever holds your bias cell?
:::::::
:::::::
:::::::Lewis
::::::::
:::::::
:::::::
::::::
::::::
:::::
:::::
::::
::::
:::
:::
::
::
:
:

:No - I injected an RF signal right into the top cap of the 6A7 and tuned thru the frequency range of the receiver - no converter output.
:
:I am going to check the caps around the 6A7 and if that doesnt work check the coil continuity ( again ).
:
::Lou,
::
::We are sure the antenna section of the tuning condenser is not shorted.
::
:::Edd:
:::
:::Well with a little retuning of the second IF I managed to get a nice clear 1000 Hz tone thru the IF stages, at 455 KHz.
:::
:::I did your test with the external receiver - the mixer stage is not operating even though it does appear that the LO is there. So I am going to check the caps, especially that mica one and also the input network.
:::
:::Lou
:::
::::
::::

:::: :::: :::: :::: :::: :::: :::: :::: :::: :::: :::: ::::Sir Lou. . . . :::: :::: ::::Since you JUST now clued me in on WHICH slug it was . . . . . . :::: :::: ::::In looking at the IF's on that unit and seeing . . .use of 2 tuned resonating coils in the first IF and 1 in the primary of the second IF. :::: :::: :::: ::::WITH the secondary of the second IF not being a combo L-C resonant circuit, just an RF coil (choke). :::: :::: :::: ::::I would think that with having that dropped slug being in the primary of the tuned circuit of the 2nd IF transformer it would be giving a somewhat blasé performance, even tuned into a STRONG incoming off the air station. :::: :::: ::::How about trying this: :::: :::: ::::Considering that you have a small AM pocket transistor radio . . . . :::: :::: ::::Take one each ~1-2 ft test lead with clip leads on ends. :::: :::: ::::One clip lead goes to the plate of the 6A7 which is feeding to the primary of the IF transformer or to that IF transformer if easier to access or clip onto. :::: :::: ::::Then the other end of the test lead wire gets formed into a capacitance loop that is just large enough to go around the transistor in the same plane which its internal ferri loop antenna is wound. :::: :::: ::::Just snap the free end clip back onto the insulation of the test lead in its center, such that it is holding the loop tightly around the radio, centered on that internal ferri-tenna for you. :::: :::: ::::Tune the transistor radio to the second harmonic of 455 khz . . . . . .910 khz. :::: :::: ::::VEWY-VEWY carefully, since those micro-mini DIRECT drive dials are not known to have ANY vernier action. :::: :::: ::::Then you do a combo of tuning in the "operating" Eastinghouse to a local powerhouse stations frequency and a slight check of the transitor, as you might not have exactly found 910 yet on its dial . . . yet. :::: :::: ::::Doing this test with an OPERATIONAL mixer stage , once you have zeroed in on the transistors tuning to 910 , will result in stations pouring in on the "Eastinghouses" tuning condensers settings just like a regular radio. :::: :::: ::::It is just using the IF strip, audio detection , af amplification and the speaker of the transitor radio . :::: :::: ::::There is then no longer a perceived ambiguity of the "mixer" section being at "fault" . :::: :::: :::: :::: :::: :::: :::: ::::73's de Edd :::: :::: :::: :::: :::: ::::People who complain about the way the ball bounces, usually dropped it. :::: :::: :::: :::: :::: :::: :::: :::: ::::

::::
::::
::::
::::
:::::Edd - round two
:::::
:::::All good suggestions..
:::::
:::::I have yet to retrieve the slug from the 2nd IF - I have to get in there - very cramped!!
:::::
:::::I just thought today that I would go after the caps - I think that is the last thing I can try there - I do have an LO ( local oscillator ) but no conversion.
:::::
:::::Thanks for the tips
:::::
:::::Lou:
::::::
::::::

:::::: :::::: :::::: :::::: :::::: :::::: :::::: :::::: :::::: :::::: :::::: ::::::Sir Lou. . . . :::::: :::::: ::::::Some exploratory . . . . . ?'s :::::: :::::: ::::::Are C7 and C8 new units, such that they can be eliminated as potential faults ? :::::: :::::: ::::::Assuming that you probably left C9 mica unit untouched. :::::: :::::: ::::::Also . . . . that pulling it for a subjective test under voltage for ANY leakage would be problematic . . . can you, instead, just lift one of it's lead ends and sub in a new generation 100pf silver mica unit ? :::::: :::::: :::::: ::::::Have you retrieved the "errant" slug within the mentioned IF . . .repositioned . . . and are you now able to feed tone modulated 456 khz throughout the system? :::::: :::::: ::::::Will a "force fed" 1Mhz tone modulated signal feed thru the system in the middle of BCB. :::::: :::::: ::::::If not, how about passage of a like test signal in the middle of the short wave band, since the decrease in required wire on frontal RF coils makes them less failure prone. :::::: :::::: :::::: :::::: :::::: :::::: :::::: ::::::73's de Edd :::::: :::::: :::::: :::::: :::::: ::::::Teamwork is nice; since it then allows you to blame someone else. :::::: :::::: :::::: :::::: :::::: :::::: :::::: :::::: ::::::

::::::
::::::
::::::
::::::
::::::
::::::::In fact it is a 1 volt cell and I just tried activating it as Warren suggested at it works - so far I have appx. 0.8 V out of the cell.
:::::::
:::::::BUT something is still preventing the 6A7 converter in this radio from working. So far, a mystery.
:::::::
:::::::Lou
::::::
::::::
:::::::
::::::::The bias cell is 3 volts. You do need this negative bias for the audio section to work.
::::::::
::::::::Without that bias, the tube is operating in some class of amplification known only to God. I wonder if a 3 Volt coin cell used in most everything today would fit into whatever holds your bias cell?
::::::::
::::::::
::::::::Lewis
:::::::::
::::::::
::::::::
:::::::
:::::::
::::::
::::::
:::::
:::::
::::
::::
:::
:::
::
::
:
:

I am trying one more thing on this radio but I have to tell you the status.

I have never in my career worked on such a poor chassis before.

The second IF transformer is somehow not set up right. The internal slug is not even connected in any way to the tuning screw that I was going to fish out of the assy. I just moved the slug with a screwdriver to get SOME response out of the IF.

The AM bdcst band input simply refuses to work. I cannot get any mixing at all. I was just checking the shortwave portion of this unit and I did in fact get some converted output, so maybe we have another coil problem.

I did fix a miswire and found a resistor out of tolerance ( tacked in a replacement ) but after that the unit has been very troublesome.

I usually dont give up but I think I have spent so much time on this chassis I may have to and I am sorry. I just dont believe this one is ever going to fly unless you get a new ( NOS) second IF transfomer in there and start there.

With deep regrets
Lou

:Hi Lou,
:Just a suggestion that might help you. Pull up the schematic for the "Emerson 108" I believe they are the same chassis and the Emerson schematic has more information that might help you. Let me know if you want me to send the Emerson chassis or if you would want to send back the WR-100, or continue on. I want you to know I just picked that one to send to you because I have so many radios to work on I don't know which end is up anymore. Just got four more in today. The guy wants me to make two working radios out of the four, problem is that 2 are battery only radios and two work off of AC and DC but they are all the same radio and look exactly alike. I'll tell you, you just never know what to expect. Good Luck, George T.
:
:
:
::No - I injected an RF signal right into the top cap of the 6A7 and tuned thru the frequency range of the receiver - no converter output.
::
::I am going to check the caps around the 6A7 and if that doesnt work check the coil continuity ( again ).
::
:::Lou,
:::
:::We are sure the antenna section of the tuning condenser is not shorted.
:::
::::Edd:
::::
::::Well with a little retuning of the second IF I managed to get a nice clear 1000 Hz tone thru the IF stages, at 455 KHz.
::::
::::I did your test with the external receiver - the mixer stage is not operating even though it does appear that the LO is there. So I am going to check the caps, especially that mica one and also the input network.
::::
::::Lou
::::
:::::
:::::

::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: :::::Sir Lou. . . . ::::: ::::: :::::Since you JUST now clued me in on WHICH slug it was . . . . . . ::::: ::::: :::::In looking at the IF's on that unit and seeing . . .use of 2 tuned resonating coils in the first IF and 1 in the primary of the second IF. ::::: ::::: ::::: :::::WITH the secondary of the second IF not being a combo L-C resonant circuit, just an RF coil (choke). ::::: ::::: ::::: :::::I would think that with having that dropped slug being in the primary of the tuned circuit of the 2nd IF transformer it would be giving a somewhat blasé performance, even tuned into a STRONG incoming off the air station. ::::: ::::: :::::How about trying this: ::::: ::::: :::::Considering that you have a small AM pocket transistor radio . . . . ::::: ::::: :::::Take one each ~1-2 ft test lead with clip leads on ends. ::::: ::::: :::::One clip lead goes to the plate of the 6A7 which is feeding to the primary of the IF transformer or to that IF transformer if easier to access or clip onto. ::::: ::::: :::::Then the other end of the test lead wire gets formed into a capacitance loop that is just large enough to go around the transistor in the same plane which its internal ferri loop antenna is wound. ::::: ::::: :::::Just snap the free end clip back onto the insulation of the test lead in its center, such that it is holding the loop tightly around the radio, centered on that internal ferri-tenna for you. ::::: ::::: :::::Tune the transistor radio to the second harmonic of 455 khz . . . . . .910 khz. ::::: ::::: :::::VEWY-VEWY carefully, since those micro-mini DIRECT drive dials are not known to have ANY vernier action. ::::: ::::: :::::Then you do a combo of tuning in the "operating" Eastinghouse to a local powerhouse stations frequency and a slight check of the transitor, as you might not have exactly found 910 yet on its dial . . . yet. ::::: ::::: :::::Doing this test with an OPERATIONAL mixer stage , once you have zeroed in on the transistors tuning to 910 , will result in stations pouring in on the "Eastinghouses" tuning condensers settings just like a regular radio. ::::: ::::: :::::It is just using the IF strip, audio detection , af amplification and the speaker of the transitor radio . ::::: ::::: :::::There is then no longer a perceived ambiguity of the "mixer" section being at "fault" . ::::: ::::: ::::: ::::: ::::: ::::: ::::: :::::73's de Edd ::::: ::::: ::::: ::::: ::::: :::::People who complain about the way the ball bounces, usually dropped it. ::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: :::::

:::::
:::::
:::::
:::::
::::::Edd - round two
::::::
::::::All good suggestions..
::::::
::::::I have yet to retrieve the slug from the 2nd IF - I have to get in there - very cramped!!
::::::
::::::I just thought today that I would go after the caps - I think that is the last thing I can try there - I do have an LO ( local oscillator ) but no conversion.
::::::
::::::Thanks for the tips
::::::
::::::Lou:
:::::::
:::::::

::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: :::::::Sir Lou. . . . ::::::: ::::::: :::::::Some exploratory . . . . . ?'s ::::::: ::::::: :::::::Are C7 and C8 new units, such that they can be eliminated as potential faults ? ::::::: ::::::: :::::::Assuming that you probably left C9 mica unit untouched. ::::::: ::::::: :::::::Also . . . . that pulling it for a subjective test under voltage for ANY leakage would be problematic . . . can you, instead, just lift one of it's lead ends and sub in a new generation 100pf silver mica unit ? ::::::: ::::::: ::::::: :::::::Have you retrieved the "errant" slug within the mentioned IF . . .repositioned . . . and are you now able to feed tone modulated 456 khz throughout the system? ::::::: ::::::: :::::::Will a "force fed" 1Mhz tone modulated signal feed thru the system in the middle of BCB. ::::::: ::::::: :::::::If not, how about passage of a like test signal in the middle of the short wave band, since the decrease in required wire on frontal RF coils makes them less failure prone. ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: :::::::73's de Edd ::::::: ::::::: ::::::: ::::::: ::::::: :::::::Teamwork is nice; since it then allows you to blame someone else. ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: :::::::

:::::::
:::::::
:::::::
:::::::
:::::::
:::::::::In fact it is a 1 volt cell and I just tried activating it as Warren suggested at it works - so far I have appx. 0.8 V out of the cell.
::::::::
::::::::BUT something is still preventing the 6A7 converter in this radio from working. So far, a mystery.
::::::::
::::::::Lou
:::::::
:::::::
::::::::
:::::::::The bias cell is 3 volts. You do need this negative bias for the audio section to work.
:::::::::
:::::::::Without that bias, the tube is operating in some class of amplification known only to God. I wonder if a 3 Volt coin cell used in most everything today would fit into whatever holds your bias cell?
:::::::::
:::::::::
:::::::::Lewis
::::::::::
:::::::::
:::::::::
::::::::
::::::::
:::::::
:::::::
::::::
::::::
:::::
:::::
::::
::::
:::
:::
::
::
:
:

I do want to help - but I think this particular set is just so bad that it is too much to fix!!

I am sorry that I started with you on the wrong foot here.

Lou

:Hi Lou,
:Just a suggestion that might help you. Pull up the schematic for the "Emerson 108" I believe they are the same chassis and the Emerson schematic has more information that might help you. Let me know if you want me to send the Emerson chassis or if you would want to send back the WR-100, or continue on. I want you to know I just picked that one to send to you because I have so many radios to work on I don't know which end is up anymore. Just got four more in today. The guy wants me to make two working radios out of the four, problem is that 2 are battery only radios and two work off of AC and DC but they are all the same radio and look exactly alike. I'll tell you, you just never know what to expect. Good Luck, George T.
:
:
:
::No - I injected an RF signal right into the top cap of the 6A7 and tuned thru the frequency range of the receiver - no converter output.
::
::I am going to check the caps around the 6A7 and if that doesnt work check the coil continuity ( again ).
::
:::Lou,
:::
:::We are sure the antenna section of the tuning condenser is not shorted.
:::
::::Edd:
::::
::::Well with a little retuning of the second IF I managed to get a nice clear 1000 Hz tone thru the IF stages, at 455 KHz.
::::
::::I did your test with the external receiver - the mixer stage is not operating even though it does appear that the LO is there. So I am going to check the caps, especially that mica one and also the input network.
::::
::::Lou
::::
:::::
:::::

::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: :::::Sir Lou. . . . ::::: ::::: :::::Since you JUST now clued me in on WHICH slug it was . . . . . . ::::: ::::: :::::In looking at the IF's on that unit and seeing . . .use of 2 tuned resonating coils in the first IF and 1 in the primary of the second IF. ::::: ::::: ::::: :::::WITH the secondary of the second IF not being a combo L-C resonant circuit, just an RF coil (choke). ::::: ::::: ::::: :::::I would think that with having that dropped slug being in the primary of the tuned circuit of the 2nd IF transformer it would be giving a somewhat blasé performance, even tuned into a STRONG incoming off the air station. ::::: ::::: :::::How about trying this: ::::: ::::: :::::Considering that you have a small AM pocket transistor radio . . . . ::::: ::::: :::::Take one each ~1-2 ft test lead with clip leads on ends. ::::: ::::: :::::One clip lead goes to the plate of the 6A7 which is feeding to the primary of the IF transformer or to that IF transformer if easier to access or clip onto. ::::: ::::: :::::Then the other end of the test lead wire gets formed into a capacitance loop that is just large enough to go around the transistor in the same plane which its internal ferri loop antenna is wound. ::::: ::::: :::::Just snap the free end clip back onto the insulation of the test lead in its center, such that it is holding the loop tightly around the radio, centered on that internal ferri-tenna for you. ::::: ::::: :::::Tune the transistor radio to the second harmonic of 455 khz . . . . . .910 khz. ::::: ::::: :::::VEWY-VEWY carefully, since those micro-mini DIRECT drive dials are not known to have ANY vernier action. ::::: ::::: :::::Then you do a combo of tuning in the "operating" Eastinghouse to a local powerhouse stations frequency and a slight check of the transitor, as you might not have exactly found 910 yet on its dial . . . yet. ::::: ::::: :::::Doing this test with an OPERATIONAL mixer stage , once you have zeroed in on the transistors tuning to 910 , will result in stations pouring in on the "Eastinghouses" tuning condensers settings just like a regular radio. ::::: ::::: :::::It is just using the IF strip, audio detection , af amplification and the speaker of the transitor radio . ::::: ::::: :::::There is then no longer a perceived ambiguity of the "mixer" section being at "fault" . ::::: ::::: ::::: ::::: ::::: ::::: ::::: :::::73's de Edd ::::: ::::: ::::: ::::: ::::: :::::People who complain about the way the ball bounces, usually dropped it. ::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: :::::

:::::
:::::
:::::
:::::
::::::Edd - round two
::::::
::::::All good suggestions..
::::::
::::::I have yet to retrieve the slug from the 2nd IF - I have to get in there - very cramped!!
::::::
::::::I just thought today that I would go after the caps - I think that is the last thing I can try there - I do have an LO ( local oscillator ) but no conversion.
::::::
::::::Thanks for the tips
::::::
::::::Lou:
:::::::
:::::::

::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: :::::::Sir Lou. . . . ::::::: ::::::: :::::::Some exploratory . . . . . ?'s ::::::: ::::::: :::::::Are C7 and C8 new units, such that they can be eliminated as potential faults ? ::::::: ::::::: :::::::Assuming that you probably left C9 mica unit untouched. ::::::: ::::::: :::::::Also . . . . that pulling it for a subjective test under voltage for ANY leakage would be problematic . . . can you, instead, just lift one of it's lead ends and sub in a new generation 100pf silver mica unit ? ::::::: ::::::: ::::::: :::::::Have you retrieved the "errant" slug within the mentioned IF . . .repositioned . . . and are you now able to feed tone modulated 456 khz throughout the system? ::::::: ::::::: :::::::Will a "force fed" 1Mhz tone modulated signal feed thru the system in the middle of BCB. ::::::: ::::::: :::::::If not, how about passage of a like test signal in the middle of the short wave band, since the decrease in required wire on frontal RF coils makes them less failure prone. ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: :::::::73's de Edd ::::::: ::::::: ::::::: ::::::: ::::::: :::::::Teamwork is nice; since it then allows you to blame someone else. ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: :::::::

:::::::
:::::::
:::::::
:::::::
:::::::
:::::::::In fact it is a 1 volt cell and I just tried activating it as Warren suggested at it works - so far I have appx. 0.8 V out of the cell.
::::::::
::::::::BUT something is still preventing the 6A7 converter in this radio from working. So far, a mystery.
::::::::
::::::::Lou
:::::::
:::::::
::::::::
:::::::::The bias cell is 3 volts. You do need this negative bias for the audio section to work.
:::::::::
:::::::::Without that bias, the tube is operating in some class of amplification known only to God. I wonder if a 3 Volt coin cell used in most everything today would fit into whatever holds your bias cell?
:::::::::
:::::::::
:::::::::Lewis
::::::::::
:::::::::
:::::::::
::::::::
::::::::
:::::::
:::::::
::::::
::::::
:::::
:::::
::::
::::
:::
:::
::
::
:
:

:PS: George
:
:I do want to help - but I think this particular set is just so bad that it is too much to fix!!
:
:I am sorry that I started with you on the wrong foot here.
:
:Lou
:
::Hi Lou,
::Just a suggestion that might help you. Pull up the schematic for the "Emerson 108" I believe they are the same chassis and the Emerson schematic has more information that might help you. Let me know if you want me to send the Emerson chassis or if you would want to send back the WR-100, or continue on. I want you to know I just picked that one to send to you because I have so many radios to work on I don't know which end is up anymore. Just got four more in today. The guy wants me to make two working radios out of the four, problem is that 2 are battery only radios and two work off of AC and DC but they are all the same radio and look exactly alike. I'll tell you, you just never know what to expect. Good Luck, George T.
::
::
::
:::No - I injected an RF signal right into the top cap of the 6A7 and tuned thru the frequency range of the receiver - no converter output.
:::
:::I am going to check the caps around the 6A7 and if that doesnt work check the coil continuity ( again ).
:::
::::Lou,
::::
::::We are sure the antenna section of the tuning condenser is not shorted.
::::
:::::Edd:
:::::
:::::Well with a little retuning of the second IF I managed to get a nice clear 1000 Hz tone thru the IF stages, at 455 KHz.
:::::
:::::I did your test with the external receiver - the mixer stage is not operating even though it does appear that the LO is there. So I am going to check the caps, especially that mica one and also the input network.
:::::
:::::Lou
:::::
::::::
::::::

:::::: :::::: :::::: :::::: :::::: :::::: :::::: :::::: :::::: :::::: :::::: ::::::Sir Lou. . . . :::::: :::::: ::::::Since you JUST now clued me in on WHICH slug it was . . . . . . :::::: :::::: ::::::In looking at the IF's on that unit and seeing . . .use of 2 tuned resonating coils in the first IF and 1 in the primary of the second IF. :::::: :::::: :::::: ::::::WITH the secondary of the second IF not being a combo L-C resonant circuit, just an RF coil (choke). :::::: :::::: :::::: ::::::I would think that with having that dropped slug being in the primary of the tuned circuit of the 2nd IF transformer it would be giving a somewhat blasé performance, even tuned into a STRONG incoming off the air station. :::::: :::::: ::::::How about trying this: :::::: :::::: ::::::Considering that you have a small AM pocket transistor radio . . . . :::::: :::::: ::::::Take one each ~1-2 ft test lead with clip leads on ends. :::::: :::::: ::::::One clip lead goes to the plate of the 6A7 which is feeding to the primary of the IF transformer or to that IF transformer if easier to access or clip onto. :::::: :::::: ::::::Then the other end of the test lead wire gets formed into a capacitance loop that is just large enough to go around the transistor in the same plane which its internal ferri loop antenna is wound. :::::: :::::: ::::::Just snap the free end clip back onto the insulation of the test lead in its center, such that it is holding the loop tightly around the radio, centered on that internal ferri-tenna for you. :::::: :::::: ::::::Tune the transistor radio to the second harmonic of 455 khz . . . . . .910 khz. :::::: :::::: ::::::VEWY-VEWY carefully, since those micro-mini DIRECT drive dials are not known to have ANY vernier action. :::::: :::::: ::::::Then you do a combo of tuning in the "operating" Eastinghouse to a local powerhouse stations frequency and a slight check of the transitor, as you might not have exactly found 910 yet on its dial . . . yet. :::::: :::::: ::::::Doing this test with an OPERATIONAL mixer stage , once you have zeroed in on the transistors tuning to 910 , will result in stations pouring in on the "Eastinghouses" tuning condensers settings just like a regular radio. :::::: :::::: ::::::It is just using the IF strip, audio detection , af amplification and the speaker of the transitor radio . :::::: :::::: ::::::There is then no longer a perceived ambiguity of the "mixer" section being at "fault" . :::::: :::::: :::::: :::::: :::::: :::::: :::::: ::::::73's de Edd :::::: :::::: :::::: :::::: :::::: ::::::People who complain about the way the ball bounces, usually dropped it. :::::: :::::: :::::: :::::: :::::: :::::: :::::: :::::: ::::::

::::::
::::::
::::::
::::::
:::::::Edd - round two
:::::::
:::::::All good suggestions..
:::::::
:::::::I have yet to retrieve the slug from the 2nd IF - I have to get in there - very cramped!!
:::::::
:::::::I just thought today that I would go after the caps - I think that is the last thing I can try there - I do have an LO ( local oscillator ) but no conversion.
:::::::
:::::::Thanks for the tips
:::::::
:::::::Lou:
::::::::
::::::::

:::::::: :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: ::::::::Sir Lou. . . . :::::::: :::::::: ::::::::Some exploratory . . . . . ?'s :::::::: :::::::: ::::::::Are C7 and C8 new units, such that they can be eliminated as potential faults ? :::::::: :::::::: ::::::::Assuming that you probably left C9 mica unit untouched. :::::::: :::::::: ::::::::Also . . . . that pulling it for a subjective test under voltage for ANY leakage would be problematic . . . can you, instead, just lift one of it's lead ends and sub in a new generation 100pf silver mica unit ? :::::::: :::::::: :::::::: ::::::::Have you retrieved the "errant" slug within the mentioned IF . . .repositioned . . . and are you now able to feed tone modulated 456 khz throughout the system? :::::::: :::::::: ::::::::Will a "force fed" 1Mhz tone modulated signal feed thru the system in the middle of BCB. :::::::: :::::::: ::::::::If not, how about passage of a like test signal in the middle of the short wave band, since the decrease in required wire on frontal RF coils makes them less failure prone. :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: ::::::::73's de Edd :::::::: :::::::: :::::::: :::::::: :::::::: ::::::::Teamwork is nice; since it then allows you to blame someone else. :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: ::::::::

::::::::
::::::::
::::::::
::::::::
::::::::
::::::::::In fact it is a 1 volt cell and I just tried activating it as Warren suggested at it works - so far I have appx. 0.8 V out of the cell.
:::::::::
:::::::::BUT something is still preventing the 6A7 converter in this radio from working. So far, a mystery.
:::::::::
:::::::::Lou
::::::::
::::::::
:::::::::
::::::::::The bias cell is 3 volts. You do need this negative bias for the audio section to work.
::::::::::
::::::::::Without that bias, the tube is operating in some class of amplification known only to God. I wonder if a 3 Volt coin cell used in most everything today would fit into whatever holds your bias cell?
::::::::::
::::::::::
::::::::::Lewis
:::::::::::
::::::::::
::::::::::
:::::::::
:::::::::
::::::::
::::::::
:::::::
:::::::
::::::
::::::
:::::
:::::
::::
::::
:::
:::
::
::
:
:

Boy these OLD radios ae not for the faint of heart!!

Lou

:Hey Lou, they are a mess to work on believe me recapping it was a Royal pain. You didn't start out on the wrong foot at all infact I'm quite impressed at your passion. I was dredding getting back on it due to the lack of working space. If you want wrap it up, let me know what I owe you and shipping cost and I'll get you taken care of. I run into this all the time, it seems like your doing good if you make $5.00 and hour restoring these some of these old radios. God only knows who did what to it in the past. It's funny you will get one working great stick it back in the cabinet listen to it for a while and have to pull it back out and locate another problem that developed. No hard feelings at all. In fact if I get anymore from the East Coast I will refer them to you in the future. Thank You Again, George T
:
:
:
::PS: George
::
::I do want to help - but I think this particular set is just so bad that it is too much to fix!!
::
::I am sorry that I started with you on the wrong foot here.
::
::Lou
::
:::Hi Lou,
:::Just a suggestion that might help you. Pull up the schematic for the "Emerson 108" I believe they are the same chassis and the Emerson schematic has more information that might help you. Let me know if you want me to send the Emerson chassis or if you would want to send back the WR-100, or continue on. I want you to know I just picked that one to send to you because I have so many radios to work on I don't know which end is up anymore. Just got four more in today. The guy wants me to make two working radios out of the four, problem is that 2 are battery only radios and two work off of AC and DC but they are all the same radio and look exactly alike. I'll tell you, you just never know what to expect. Good Luck, George T.
:::
:::
:::
::::No - I injected an RF signal right into the top cap of the 6A7 and tuned thru the frequency range of the receiver - no converter output.
::::
::::I am going to check the caps around the 6A7 and if that doesnt work check the coil continuity ( again ).
::::
:::::Lou,
:::::
:::::We are sure the antenna section of the tuning condenser is not shorted.
:::::
::::::Edd:
::::::
::::::Well with a little retuning of the second IF I managed to get a nice clear 1000 Hz tone thru the IF stages, at 455 KHz.
::::::
::::::I did your test with the external receiver - the mixer stage is not operating even though it does appear that the LO is there. So I am going to check the caps, especially that mica one and also the input network.
::::::
::::::Lou
::::::
:::::::
:::::::

::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: :::::::Sir Lou. . . . ::::::: ::::::: :::::::Since you JUST now clued me in on WHICH slug it was . . . . . . ::::::: ::::::: :::::::In looking at the IF's on that unit and seeing . . .use of 2 tuned resonating coils in the first IF and 1 in the primary of the second IF. ::::::: ::::::: ::::::: :::::::WITH the secondary of the second IF not being a combo L-C resonant circuit, just an RF coil (choke). ::::::: ::::::: ::::::: :::::::I would think that with having that dropped slug being in the primary of the tuned circuit of the 2nd IF transformer it would be giving a somewhat blasé performance, even tuned into a STRONG incoming off the air station. ::::::: ::::::: :::::::How about trying this: ::::::: ::::::: :::::::Considering that you have a small AM pocket transistor radio . . . . ::::::: ::::::: :::::::Take one each ~1-2 ft test lead with clip leads on ends. ::::::: ::::::: :::::::One clip lead goes to the plate of the 6A7 which is feeding to the primary of the IF transformer or to that IF transformer if easier to access or clip onto. ::::::: ::::::: :::::::Then the other end of the test lead wire gets formed into a capacitance loop that is just large enough to go around the transistor in the same plane which its internal ferri loop antenna is wound. ::::::: ::::::: :::::::Just snap the free end clip back onto the insulation of the test lead in its center, such that it is holding the loop tightly around the radio, centered on that internal ferri-tenna for you. ::::::: ::::::: :::::::Tune the transistor radio to the second harmonic of 455 khz . . . . . .910 khz. ::::::: ::::::: :::::::VEWY-VEWY carefully, since those micro-mini DIRECT drive dials are not known to have ANY vernier action. ::::::: ::::::: :::::::Then you do a combo of tuning in the "operating" Eastinghouse to a local powerhouse stations frequency and a slight check of the transitor, as you might not have exactly found 910 yet on its dial . . . yet. ::::::: ::::::: :::::::Doing this test with an OPERATIONAL mixer stage , once you have zeroed in on the transistors tuning to 910 , will result in stations pouring in on the "Eastinghouses" tuning condensers settings just like a regular radio. ::::::: ::::::: :::::::It is just using the IF strip, audio detection , af amplification and the speaker of the transitor radio . ::::::: ::::::: :::::::There is then no longer a perceived ambiguity of the "mixer" section being at "fault" . ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: :::::::73's de Edd ::::::: ::::::: ::::::: ::::::: ::::::: :::::::People who complain about the way the ball bounces, usually dropped it. ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: ::::::: :::::::

:::::::
:::::::
:::::::
:::::::
::::::::Edd - round two
::::::::
::::::::All good suggestions..
::::::::
::::::::I have yet to retrieve the slug from the 2nd IF - I have to get in there - very cramped!!
::::::::
::::::::I just thought today that I would go after the caps - I think that is the last thing I can try there - I do have an LO ( local oscillator ) but no conversion.
::::::::
::::::::Thanks for the tips
::::::::
::::::::Lou:
:::::::::
:::::::::

::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: :::::::::Sir Lou. . . . ::::::::: ::::::::: :::::::::Some exploratory . . . . . ?'s ::::::::: ::::::::: :::::::::Are C7 and C8 new units, such that they can be eliminated as potential faults ? ::::::::: ::::::::: :::::::::Assuming that you probably left C9 mica unit untouched. ::::::::: ::::::::: :::::::::Also . . . . that pulling it for a subjective test under voltage for ANY leakage would be problematic . . . can you, instead, just lift one of it's lead ends and sub in a new generation 100pf silver mica unit ? ::::::::: ::::::::: ::::::::: :::::::::Have you retrieved the "errant" slug within the mentioned IF . . .repositioned . . . and are you now able to feed tone modulated 456 khz throughout the system? ::::::::: ::::::::: :::::::::Will a "force fed" 1Mhz tone modulated signal feed thru the system in the middle of BCB. ::::::::: ::::::::: :::::::::If not, how about passage of a like test signal in the middle of the short wave band, since the decrease in required wire on frontal RF coils makes them less failure prone. ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: :::::::::73's de Edd ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: :::::::::Teamwork is nice; since it then allows you to blame someone else. ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: :::::::::

:::::::::
:::::::::
:::::::::
:::::::::
:::::::::
:::::::::::In fact it is a 1 volt cell and I just tried activating it as Warren suggested at it works - so far I have appx. 0.8 V out of the cell.
::::::::::
::::::::::BUT something is still preventing the 6A7 converter in this radio from working. So far, a mystery.
::::::::::
::::::::::Lou
:::::::::
:::::::::
::::::::::
:::::::::::The bias cell is 3 volts. You do need this negative bias for the audio section to work.
:::::::::::
:::::::::::Without that bias, the tube is operating in some class of amplification known only to God. I wonder if a 3 Volt coin cell used in most everything today would fit into whatever holds your bias cell?
:::::::::::
:::::::::::
:::::::::::Lewis
::::::::::::
:::::::::::
:::::::::::
::::::::::
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