If at first you don't succeed,

I'll state the problem if the schematic pix comes up. PL

[IMG]http://i178.photobucket.com/albums/w265/planigan/Hickok155OscSw0001.jpg[/IMG]

: If at first you don't succeed,
:
:
: I'll state the problem if the schematic pix comes up. PL
:

[IMG]http://i178.photobucket.com/albums/w265/planigan/Hickok155OscSw0001.jpg[/IMG]

: If at first you don't succeed,
:
:
: I'll state the problem if the schematic pix comes up. PL
:

:[IMG]http://i178.photobucket.com/albums/w265/planigan/Hickok155OscSw0001.jpg[/IMG]
:
:
:
:: If at first you don't succeed,
::
::
:: I'll state the problem if the schematic pix comes up. PL
::

I don't know if anyone will even look in here after all those mess-ups but here goes:

1. The way I got the schematic to post was to use the string list first below but the first attempts I paste the address in - no good! Came back and typed in the address and whalla!

The problem I have is that I can not read the portion of the schematic that involves the Osc range switch. The switch is a standard DPQT rotary switch. The panel and manual have three ranges. With the rotary switch in the first position both wipers are in contact with their respective pin one. The schematic has one pole incontact with the first coil while the second pole is connected to the second coil. One choice would be to wire pole one with coil 1 to terminal 1, coil 2 to terminal 2 and coil 3 to terminal 3. Second pole coil 2 to terminal 1, coil 3 to terminal 2 and (this is sheer speculation) coil 1 to terminal 3?
Does anybody have any idea what the schematic means? This is an older schematic and I think there had been no standardization of symbols? Any help will be greatly appreciated.

Sorry about all those false posts. PL

:
:
:
:
:
::[IMG]http://i178.photobucket.com/albums/w265/planigan/Hickok155OscSw0001.jpg[/IMG]
::
::
::
::: If at first you don't succeed,
:::
:::
::: I'll state the problem if the schematic pix comes up. PL
:::

Hi

You seem to be the only one posting on Hickok 155. Have you checked BAMA? They have the manual for Hickok 155.

http://bama.sbc.edu/hickok.htm

Looks like two sections of the switch operates together. The dotted lines show two sections switch together. Leave your unit wired the way it is if unsure.

Norm

: I don't know if anyone will even look in here after all those mess-ups but here goes:
:
: 1. The way I got the schematic to post was to use the string list first below but the first attempts I paste the address in - no good! Came back and typed in the address and whalla!
:
: The problem I have is that I can not read the portion of the schematic that involves the Osc range switch. The switch is a standard DPQT rotary switch. The panel and manual have three ranges. With the rotary switch in the first position both wipers are in contact with their respective pin one. The schematic has one pole incontact with the first coil while the second pole is connected to the second coil. One choice would be to wire pole one with coil 1 to terminal 1, coil 2 to terminal 2 and coil 3 to terminal 3. Second pole coil 2 to terminal 1, coil 3 to terminal 2 and (this is sheer speculation) coil 1 to terminal 3?
: Does anybody have any idea what the schematic means? This is an older schematic and I think there had been no standardization of symbols? Any help will be greatly appreciated.
:
: Sorry about all those false posts. PL
:
:
::
::
::
::
::
:::[IMG]http://i178.photobucket.com/albums/w265/planigan/Hickok155OscSw0001.jpg[/IMG]
:::
:::
:::
:::: If at first you don't succeed,
::::
::::
:::: I'll state the problem if the schematic pix comes up. PL
::::

Norm, thank you but too late, switch was striped before I looked closly at schematic and realized problem. The switches work in tandem but the schematic shows them on different coils at the same time. On other rotary swirch schematic representations, such as the EICO 377 I just finished, each wiper and each side is shown seperately. Here the sides are not shown seperately and they (wirers) cant both go to the same coil at the same time. Aside from the fact that it would not work electrically (one wiper goes to grnd the other to the plate next tube) why have a double pole switch? PL

:Hi
:
: You seem to be the only one posting on Hickok 155. Have you checked BAMA? They have the manual for Hickok 155.
:
:http://bama.sbc.edu/hickok.htm
:
: Looks like two sections of the switch operates together. The dotted lines show two sections switch together. Leave your unit wired the way it is if unsure.
:
:Norm
:
:: I don't know if anyone will even look in here after all those mess-ups but here goes:
::
:: 1. The way I got the schematic to post was to use the string list first below but the first attempts I paste the address in - no good! Came back and typed in the address and whalla!
::
:: The problem I have is that I can not read the portion of the schematic that involves the Osc range switch. The switch is a standard DPQT rotary switch. The panel and manual have three ranges. With the rotary switch in the first position both wipers are in contact with their respective pin one. The schematic has one pole incontact with the first coil while the second pole is connected to the second coil. One choice would be to wire pole one with coil 1 to terminal 1, coil 2 to terminal 2 and coil 3 to terminal 3. Second pole coil 2 to terminal 1, coil 3 to terminal 2 and (this is sheer speculation) coil 1 to terminal 3?
:: Does anybody have any idea what the schematic means? This is an older schematic and I think there had been no standardization of symbols? Any help will be greatly appreciated.
::
:: Sorry about all those false posts. PL
::
::
:::
:::
:::
:::
:::
::::[IMG]http://i178.photobucket.com/albums/w265/planigan/Hickok155OscSw0001.jpg[/IMG]
::::
::::
::::
::::: If at first you don't succeed,
:::::
:::::
::::: I'll state the problem if the schematic pix comes up. PL
:::::

Do this be of any help......as it is showing a common ganged rotary 3P--4Pos switch as being utilized.

Which could be that you wouldn't necessarily have 4 different wafer levels, with it having as few positions...a mere 4..as it does, they probably might have opted to
have merely used HALF of the wafer for each separate gang. Thereby, there only being 2 actual wafers incorporated, but 4 separate sections being attainable in that manner.



1...With the plate circuit LC inductors being sequentially switched by...................................................... section #1



2...The C3 capacitor selectively being switched to ground in the second and third down positions by ........section #2.

3...There is an RF sample via C12 being sent to the diode det plates, in the top 3 RF functions..or an open

circuit at the very bottom positioning when the unit is in its monitoring / AF mode....................................... section #3



Schema Techical Referencing ...........Dig (X) Here

73's de Edd

: Norm, thank you but too late, switch was striped before I looked closly at schematic and realized problem. The switches work in tandem but the schematic shows them on different coils at the same time. On other rotary swirch schematic representations, such as the EICO 377 I just finished, each wiper and each side is shown seperately. Here the sides are not shown seperately and they (wirers) cant both go to the same coil at the same time. Aside from the fact that it would not work electrically (one wiper goes to grnd the other to the plate next tube) why have a double pole switch? PL
:
:
::Hi
::
:: You seem to be the only one posting on Hickok 155. Have you checked BAMA? They have the manual for Hickok 155.
::
::http://bama.sbc.edu/hickok.htm
::
:: Looks like two sections of the switch operates together. The dotted lines show two sections switch together. Leave your unit wired the way it is if unsure.
::
::Norm
::
::: I don't know if anyone will even look in here after all those mess-ups but here goes:
:::
::: 1. The way I got the schematic to post was to use the string list first below but the first attempts I paste the address in - no good! Came back and typed in the address and whalla!
:::
::: The problem I have is that I can not read the portion of the schematic that involves the Osc range switch. The switch is a standard DPQT rotary switch. The panel and manual have three ranges. With the rotary switch in the first position both wipers are in contact with their respective pin one. The schematic has one pole incontact with the first coil while the second pole is connected to the second coil. One choice would be to wire pole one with coil 1 to terminal 1, coil 2 to terminal 2 and coil 3 to terminal 3. Second pole coil 2 to terminal 1, coil 3 to terminal 2 and (this is sheer speculation) coil 1 to terminal 3?
::: Does anybody have any idea what the schematic means? This is an older schematic and I think there had been no standardization of symbols? Any help will be greatly appreciated.
:::
::: Sorry about all those false posts. PL
:::
:::
::::
::::
::::
::::
::::
:::::[IMG]http://i178.photobucket.com/albums/w265/planigan/Hickok155OscSw0001.jpg[/IMG]
:::::
:::::
:::::
:::::: If at first you don't succeed,
::::::
::::::
:::::: I'll state the problem if the schematic pix comes up. PL
::::::

Edd, you picked the later modification of the unit that had the TPQT but the schematic clearly shows each wiper at each switch. The older model that I have lumps the DPTT into one switch.I am beginning to think that the second pole should be wired with coil 2 on one, coil 3 on two and leave third position empty. This is based on the fact that the schematic shows pole 1 on coil one while pole 2 is on coil two, physically this can only be done by placing coil 2 on the 1 position terminal. Any further thought. I really think this is a schematic reading problem. Some one must know what they meant when they showed multipole multithroww switches in this manner! PL

:Do this be of any help......as it is showing a common ganged rotary 3P--4Pos switch as being utilized.
:
:Which could be that you wouldn't necessarily have 4 different wafer levels, with it having as few positions...a mere 4..as it does, they probably might have opted to
:have merely used HALF of the wafer for each separate gang. Thereby, there only being 2 actual wafers incorporated, but 4 separate sections being attainable in that manner.
:
:
:
:1...With the plate circuit LC inductors being sequentially switched by...................................................... section #1
:
:
:
:2...The C3 capacitor selectively being switched to ground in the second and third down positions by ........section #2.
:
:
:
:
:3...There is an RF sample via C12 being sent to the diode det plates, in the top 3 RF functions..or an open
:
: circuit at the very bottom positioning when the unit is in its monitoring / AF mode....................................... section #3
:
:
:
:Schema Techical Referencing ...........Dig (X) Here
:
:
:
:
:
:73's de Edd
:
:
:
:
:
:
:
:
:
:
:: Norm, thank you but too late, switch was striped before I looked closly at schematic and realized problem. The switches work in tandem but the schematic shows them on different coils at the same time. On other rotary swirch schematic representations, such as the EICO 377 I just finished, each wiper and each side is shown seperately. Here the sides are not shown seperately and they (wirers) cant both go to the same coil at the same time. Aside from the fact that it would not work electrically (one wiper goes to grnd the other to the plate next tube) why have a double pole switch? PL
::
::
:::Hi
:::
::: You seem to be the only one posting on Hickok 155. Have you checked BAMA? They have the manual for Hickok 155.
:::
:::http://bama.sbc.edu/hickok.htm
:::
::: Looks like two sections of the switch operates together. The dotted lines show two sections switch together. Leave your unit wired the way it is if unsure.
:::
:::Norm
:::
:::: I don't know if anyone will even look in here after all those mess-ups but here goes:
::::
:::: 1. The way I got the schematic to post was to use the string list first below but the first attempts I paste the address in - no good! Came back and typed in the address and whalla!
::::
:::: The problem I have is that I can not read the portion of the schematic that involves the Osc range switch. The switch is a standard DPQT rotary switch. The panel and manual have three ranges. With the rotary switch in the first position both wipers are in contact with their respective pin one. The schematic has one pole incontact with the first coil while the second pole is connected to the second coil. One choice would be to wire pole one with coil 1 to terminal 1, coil 2 to terminal 2 and coil 3 to terminal 3. Second pole coil 2 to terminal 1, coil 3 to terminal 2 and (this is sheer speculation) coil 1 to terminal 3?
:::: Does anybody have any idea what the schematic means? This is an older schematic and I think there had been no standardization of symbols? Any help will be greatly appreciated.
::::
:::: Sorry about all those false posts. PL
::::
::::
:::::
:::::
:::::
:::::
:::::
::::::[IMG]http://i178.photobucket.com/albums/w265/planigan/Hickok155OscSw0001.jpg[/IMG]
::::::
::::::
::::::
::::::: If at first you don't succeed,
:::::::
:::::::
::::::: I'll state the problem if the schematic pix comes up. PL
:::::::

In the event that some archeologist digs up this post in the future, I have decided that the schematic is WRONG (Blasphemy)and the second arrow with the dotted lines should not appear! The way the "second" pole is wire, I would place B+ directly across the coil (the "common" side of those coils goes to B+)and I think that would fry it. Edd's schematic, which is a later version/model than mine, does cross the coils but you will note a cap in wiper line before gnd, not so in mine. Also my unit has three coils while later unit has four. Actual I am rebuilding on a chassis that has other items which do not appear in the older schematic but arte on the chassis (one 10K pot labeled "AF Sensitivity Control", one 1K pot which I adapted as R 25 and and a small choke. Anyone working on these units beware which you have! PL

: Edd, you picked the later modification of the unit that had the TPQT but the schematic clearly shows each wiper at each switch. The older model that I have lumps the DPTT into one switch.I am beginning to think that the second pole should be wired with coil 2 on one, coil 3 on two and leave third position empty. This is based on the fact that the schematic shows pole 1 on coil one while pole 2 is on coil two, physically this can only be done by placing coil 2 on the 1 position terminal. Any further thought. I really think this is a schematic reading problem. Some one must know what they meant when they showed multipole multithroww switches in this manner! PL
:
:
::Do this be of any help......as it is showing a common ganged rotary 3P--4Pos switch as being utilized.
::
::Which could be that you wouldn't necessarily have 4 different wafer levels, with it having as few positions...a mere 4..as it does, they probably might have opted to
::have merely used HALF of the wafer for each separate gang. Thereby, there only being 2 actual wafers incorporated, but 4 separate sections being attainable in that manner.
::
::
::
::1...With the plate circuit LC inductors being sequentially switched by...................................................... section #1
::
::
::
::2...The C3 capacitor selectively being switched to ground in the second and third down positions by ........section #2.
::
::
::
::
::3...There is an RF sample via C12 being sent to the diode det plates, in the top 3 RF functions..or an open
::
:: circuit at the very bottom positioning when the unit is in its monitoring / AF mode....................................... section #3
::
::
::
::Schema Techical Referencing ...........Dig (X) Here
::
::
::
::
::
::73's de Edd
::
::
::
::
::
::
::
::
::
::
::: Norm, thank you but too late, switch was striped before I looked closly at schematic and realized problem. The switches work in tandem but the schematic shows them on different coils at the same time. On other rotary swirch schematic representations, such as the EICO 377 I just finished, each wiper and each side is shown seperately. Here the sides are not shown seperately and they (wirers) cant both go to the same coil at the same time. Aside from the fact that it would not work electrically (one wiper goes to grnd the other to the plate next tube) why have a double pole switch? PL
:::
:::
::::Hi
::::
:::: You seem to be the only one posting on Hickok 155. Have you checked BAMA? They have the manual for Hickok 155.
::::
::::http://bama.sbc.edu/hickok.htm
::::
:::: Looks like two sections of the switch operates together. The dotted lines show two sections switch together. Leave your unit wired the way it is if unsure.
::::
::::Norm
::::
::::: I don't know if anyone will even look in here after all those mess-ups but here goes:
:::::
::::: 1. The way I got the schematic to post was to use the string list first below but the first attempts I paste the address in - no good! Came back and typed in the address and whalla!
:::::
::::: The problem I have is that I can not read the portion of the schematic that involves the Osc range switch. The switch is a standard DPQT rotary switch. The panel and manual have three ranges. With the rotary switch in the first position both wipers are in contact with their respective pin one. The schematic has one pole incontact with the first coil while the second pole is connected to the second coil. One choice would be to wire pole one with coil 1 to terminal 1, coil 2 to terminal 2 and coil 3 to terminal 3. Second pole coil 2 to terminal 1, coil 3 to terminal 2 and (this is sheer speculation) coil 1 to terminal 3?
::::: Does anybody have any idea what the schematic means? This is an older schematic and I think there had been no standardization of symbols? Any help will be greatly appreciated.
:::::
::::: Sorry about all those false posts. PL
:::::
:::::
::::::
::::::
::::::
::::::
::::::
:::::::[IMG]http://i178.photobucket.com/albums/w265/planigan/Hickok155OscSw0001.jpg[/IMG]
:::::::
:::::::
:::::::
:::::::: If at first you don't succeed,
::::::::
::::::::
:::::::: I'll state the problem if the schematic pix comes up. PL
::::::::

: In the event that some archeologist digs up this post in the future, I have decided that the schematic is WRONG (Blasphemy)and the second arrow with the dotted lines should not appear! The way the "second" pole is wire, I would place B+ directly across the coil (the "common" side of those coils goes to B+)and I think that would fry it. Edd's schematic, which is a later version/model than mine, does cross the coils but you will note a cap in wiper line before gnd, not so in mine. Also my unit has three coils while later unit has four. Actual I am rebuilding on a chassis that has other items which do not appear in the older schematic but arte on the chassis (one 10K pot labeled "AF Sensitivity Control", one 1K pot which I adapted as R 25 and and a small choke. Anyone working on these units beware which you have! PL
:
:
:
:: Edd, you picked the later modification of the unit that had the TPQT but the schematic clearly shows each wiper at each switch. The older model that I have lumps the DPTT into one switch.I am beginning to think that the second pole should be wired with coil 2 on one, coil 3 on two and leave third position empty. This is based on the fact that the schematic shows pole 1 on coil one while pole 2 is on coil two, physically this can only be done by placing coil 2 on the 1 position terminal. Any further thought. I really think this is a schematic reading problem. Some one must know what they meant when they showed multipole multithroww switches in this manner! PL
::
::
:::Do this be of any help......as it is showing a common ganged rotary 3P--4Pos switch as being utilized.
:::
:::Which could be that you wouldn't necessarily have 4 different wafer levels, with it having as few positions...a mere 4..as it does, they probably might have opted to
:::have merely used HALF of the wafer for each separate gang. Thereby, there only being 2 actual wafers incorporated, but 4 separate sections being attainable in that manner.
:::
:::
:::
:::1...With the plate circuit LC inductors being sequentially switched by...................................................... section #1
:::
:::
:::
:::2...The C3 capacitor selectively being switched to ground in the second and third down positions by ........section #2.
:::
:::
:::
:::
:::3...There is an RF sample via C12 being sent to the diode det plates, in the top 3 RF functions..or an open
:::
::: circuit at the very bottom positioning when the unit is in its monitoring / AF mode....................................... section #3
:::
:::
:::
:::Schema Techical Referencing ...........Dig (X) Here
:::
:::
:::
:::
:::
:::73's de Edd
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::: Norm, thank you but too late, switch was striped before I looked closly at schematic and realized problem. The switches work in tandem but the schematic shows them on different coils at the same time. On other rotary swirch schematic representations, such as the EICO 377 I just finished, each wiper and each side is shown seperately. Here the sides are not shown seperately and they (wirers) cant both go to the same coil at the same time. Aside from the fact that it would not work electrically (one wiper goes to grnd the other to the plate next tube) why have a double pole switch? PL
::::
::::
:::::Hi
:::::
::::: You seem to be the only one posting on Hickok 155. Have you checked BAMA? They have the manual for Hickok 155.
:::::
:::::http://bama.sbc.edu/hickok.htm
:::::
::::: Looks like two sections of the switch operates together. The dotted lines show two sections switch together. Leave your unit wired the way it is if unsure.
:::::
:::::Norm
:::::
:::::: I don't know if anyone will even look in here after all those mess-ups but here goes:
::::::
:::::: 1. The way I got the schematic to post was to use the string list first below but the first attempts I paste the address in - no good! Came back and typed in the address and whalla!
::::::
:::::: The problem I have is that I can not read the portion of the schematic that involves the Osc range switch. The switch is a standard DPQT rotary switch. The panel and manual have three ranges. With the rotary switch in the first position both wipers are in contact with their respective pin one. The schematic has one pole incontact with the first coil while the second pole is connected to the second coil. One choice would be to wire pole one with coil 1 to terminal 1, coil 2 to terminal 2 and coil 3 to terminal 3. Second pole coil 2 to terminal 1, coil 3 to terminal 2 and (this is sheer speculation) coil 1 to terminal 3?
:::::: Does anybody have any idea what the schematic means? This is an older schematic and I think there had been no standardization of symbols? Any help will be greatly appreciated.
::::::
:::::: Sorry about all those false posts. PL
::::::
::::::
:::::::
:::::::
:::::::
:::::::
:::::::
::::::::[IMG]http://i178.photobucket.com/albums/w265/planigan/Hickok155OscSw0001.jpg[/IMG]
::::::::
::::::::
::::::::
::::::::: If at first you don't succeed,
:::::::::
:::::::::
::::::::: I'll state the problem if the schematic pix comes up. PL
:::::::::

Since I had no picture of the unit to reference to , I was uncertain of the designations of the controls and their markings on the front panel, as well as the RF bandswitching...assigned designations along with the frequency range each covered. Referring back to my schematic for referencing: I believe that you said that your oscillator only had 3 ranges vice this newer units 4th position..thereby not having the small VLF transformer located at the very bottom of the 3 L-C tank coils. And with your 2 pole 3 position rotary switch, you would be correct in having the left sections rotor switching between the three freq banks "CK" "CL" and "CM" to the plate circuitry of that 1853 toobee. With the C3 padder capacitor being connected to the rotary wiper of the second bank, it is having no connection made in the top band position "CK" Moving the rotor to the second position down...."CL" coil is in circuit and C3 then couples to, and is going back to the top coil..."CK" and has some capacitive shunting effect to ground . Moving the rotor to the final position down...."CM" coil is in circuit and then C3 couples to, and is going back to the mid coil..."CL" and has some shunting to ground . SINCE you don't have the low frequency function associated with the bottom transformer, there was no need for the third section of a rotary switch to switch between the separate switched RF functions and the AF function . Therefore the RF is coupled thru C12 and fed over to the detector plates , such that there is a direct wiring in, and there is no need for any switching to be done by a third section. BTW you referred to a "The switch is a standard DPQT "...possibly a typo.......like a DP3T ..or 2 pole 3 position...instead. 73's de Edd © 1989-2025, Nostalgia Air