I have a 1942 Zenith console Radio Phonograph. Model Number 7S682...chassis number 7b02. I am in the process of alignment. I have successfully adjusted the I. F. frequency. I'm having trouble getting any adjustment out of my F trimmer. The wavetrap E trimmer calls for adjustment for minimum. Does that mean adjust so you cannot hear the I.F. Frequency? Do you make your trimmer adjustments with the wavemagnet antenna plugged in? I've been clear through the process ignoring the trimmers that wouldn't work and ended up with a Successful BC Band. When I made my SW trimmer adjustments I could barely hear 18mc and 16mc and they were in the right place. But they are barely audible. I've replaced all my capacitors except mica. I've even replaced the 3 electrolytic ones. Questionable resistors have been replaced. All bad wire has been replaced including the wire to the alto, base, etc. Is it possible to tune in the SW using only the wavemagnet antenna? I've done the steps sucessfully where it says to "use a single turn loosely coupled to the wavemagnet" and all that went OK. But going through the proceedure time and time again I still end up wondering about trimmer E and getting no response from trimmer F. If I'm listening to BC, trimmer F will respond to adjustment. Any ideas?

:I have a 1942 Zenith console Radio Phonograph. Model Number 7S682...chassis number 7b02. I am in the process of alignment. I have successfully adjusted the I. F. frequency. I'm having trouble getting any adjustment out of my F trimmer. The wavetrap E trimmer calls for adjustment for minimum. Does that mean adjust so you cannot hear the I.F. Frequency? Do you make your trimmer adjustments with the wavemagnet antenna plugged in? I've been clear through the process ignoring the trimmers that wouldn't work and ended up with a Successful BC Band. When I made my SW trimmer adjustments I could barely hear 18mc and 16mc and they were in the right place. But they are barely audible. I've replaced all my capacitors except mica. I've even replaced the 3 electrolytic ones. Questionable resistors have been replaced. All bad wire has been replaced including the wire to the alto, base, etc. Is it possible to tune in the SW using only the wavemagnet antenna? I've done the steps sucessfully where it says to "use a single turn loosely coupled to the wavemagnet" and all that went OK. But going through the proceedure time and time again I still end up wondering about trimmer E and getting no response from trimmer F. If I'm listening to BC, trimmer F will respond to adjustment. Any ideas?

try the sw adj again and see if maybe you are tuning in an image this will sound weaker than the fundamental frequency usually the right one is the 2nd one as your turning the trimmer out.the wave trap is just adjusted for the weakest signal it will still be there but i don't think there is much purpose for a wave trap anymore so its not critical.i also think some of the early forties sets didn't work great with a loop ant. it was just for strong stations try hooking to a longwire.butch

::I have a 1942 Zenith console Radio Phonograph. Model Number 7S682...chassis number 7b02. I am in the process of alignment. I have successfully adjusted the I. F. frequency. I'm having trouble getting any adjustment out of my F trimmer. The wavetrap E trimmer calls for adjustment for minimum. Does that mean adjust so you cannot hear the I.F. Frequency? Do you make your trimmer adjustments with the wavemagnet antenna plugged in? I've been clear through the process ignoring the trimmers that wouldn't work and ended up with a Successful BC Band. When I made my SW trimmer adjustments I could barely hear 18mc and 16mc and they were in the right place. But they are barely audible. I've replaced all my capacitors except mica. I've even replaced the 3 electrolytic ones. Questionable resistors have been replaced. All bad wire has been replaced including the wire to the alto, base, etc. Is it possible to tune in the SW using only the wavemagnet antenna? I've done the steps sucessfully where it says to "use a single turn loosely coupled to the wavemagnet" and all that went OK. But going through the proceedure time and time again I still end up wondering about trimmer E and getting no response from trimmer F. If I'm listening to BC, trimmer F will respond to adjustment. Any ideas?
:
:try the sw adj again and see if maybe you are tuning in an image this will sound weaker than the fundamental frequency usually the right one is the 2nd one as your turning the trimmer out.the wave trap is just adjusted for the weakest signal it will still be there but i don't think there is much purpose for a wave trap anymore so its not critical.i also think some of the early forties sets didn't work great with a loop ant. it was just for strong stations try hooking to a longwire.butch

how long of wire are you talking about?? I tried again. The F trimmer stil doesn't respond to SW adjustment.

Transferring post from duplicate thread:

Neal: Sounds like there are several issues here.
First - just forget about the wavetrap E trimmer. That was a kludge to eliminate strong, pre-war maritime stations below the broadcast band that could come in through the set's IF. Those stations are now silent. The choke and trimmer E can be disconnected if you wish.

Trimmer F is the BC oscillator. If the BC stations are coming in pretty much on the dial, you can forget that one too.

On SW - with an antenna, can you pick up any stations? What are you using for a signal generator?
Doug

MORE:

You said, "The F trimmer stil doesn't respond to SW adjustment." Trimmer F is the BC oscillator. It's out of the picture for SW.

Here's the schematic: http://www.nostalgiaair.org/PagesByModel/385/M0025385.pdf
Doug

:::I have a 1942 Zenith console Radio Phonograph. Model Number 7S682...chassis number 7b02. I am in the process of alignment. I have successfully adjusted the I. F. frequency. I'm having trouble getting any adjustment out of my F trimmer. The wavetrap E trimmer calls for adjustment for minimum. Does that mean adjust so you cannot hear the I.F. Frequency? Do you make your trimmer adjustments with the wavemagnet antenna plugged in? I've been clear through the process ignoring the trimmers that wouldn't work and ended up with a Successful BC Band. When I made my SW trimmer adjustments I could barely hear 18mc and 16mc and they were in the right place. But they are barely audible. I've replaced all my capacitors except mica. I've even replaced the 3 electrolytic ones. Questionable resistors have been replaced. All bad wire has been replaced including the wire to the alto, base, etc. Is it possible to tune in the SW using only the wavemagnet antenna? I've done the steps sucessfully where it says to "use a single turn loosely coupled to the wavemagnet" and all that went OK. But going through the proceedure time and time again I still end up wondering about trimmer E and getting no response from trimmer F. If I'm listening to BC, trimmer F will respond to adjustment. Any ideas?
::
::try the sw adj again and see if maybe you are tuning in an image this will sound weaker than the fundamental frequency usually the right one is the 2nd one as your turning the trimmer out.the wave trap is just adjusted for the weakest signal it will still be there but i don't think there is much purpose for a wave trap anymore so its not critical.i also think some of the early forties sets didn't work great with a loop ant. it was just for strong stations try hooking to a longwire.butch
:
:how long of wire are you talking about?? I tried again. The F trimmer stil doesn't respond to SW adjustment.

:Transferring post from duplicate thread:
:
:Neal: Sounds like there are several issues here.
:First - just forget about the wavetrap E trimmer. That was a kludge to eliminate strong, pre-war maritime stations below the broadcast band that could come in through the set's IF. Those stations are now silent. The choke and trimmer E can be disconnected if you wish.
:
:Trimmer F is the BC oscillator. If the BC stations are coming in pretty much on the dial, you can forget that one too.
:
:On SW - with an antenna, can you pick up any stations? What are you using for a signal generator?
:Doug
:
:MORE:
:
:You said, "The F trimmer stil doesn't respond to SW adjustment." Trimmer F is the BC oscillator. It's out of the picture for SW.
:
:Here's the schematic: http://www.nostalgiaair.org/PagesByModel/385/M0025385.pdf
:Doug
:
:
::::I have a 1942 Zenith console Radio Phonograph. Model Number 7S682...chassis number 7b02. I am in the process of alignment. I have successfully adjusted the I. F. frequency. I'm having trouble getting any adjustment out of my F trimmer. The wavetrap E trimmer calls for adjustment for minimum. Does that mean adjust so you cannot hear the I.F. Frequency? Do you make your trimmer adjustments with the wavemagnet antenna plugged in? I've been clear through the process ignoring the trimmers that wouldn't work and ended up with a Successful BC Band. When I made my SW trimmer adjustments I could barely hear 18mc and 16mc and they were in the right place. But they are barely audible. I've replaced all my capacitors except mica. I've even replaced the 3 electrolytic ones. Questionable resistors have been replaced. All bad wire has been replaced including the wire to the alto, base, etc. Is it possible to tune in the SW using only the wavemagnet antenna? I've done the steps sucessfully where it says to "use a single turn loosely coupled to the wavemagnet" and all that went OK. But going through the proceedure time and time again I still end up wondering about trimmer E and getting no response from trimmer F. If I'm listening to BC, trimmer F will respond to adjustment. Any ideas?
:::
:::try the sw adj again and see if maybe you are tuning in an image this will sound weaker than the fundamental frequency usually the right one is the 2nd one as your turning the trimmer out.the wave trap is just adjusted for the weakest signal it will still be there but i don't think there is much purpose for a wave trap anymore so its not critical.i also think some of the early forties sets didn't work great with a loop ant. it was just for strong stations try hooking to a longwire.butch
::
::how long of wire are you talking about?? I tried again. The F trimmer stil doesn't respond to SW adjustment.

::Transferring post from duplicate thread:
::I have a Tenma Rf Signal Generator. The first word I heard out of the SW was today while I had about 10 feet of wire stretched out hooked up for an antenna. I only heard the station while I was inputing a signal in from the signal generator of 14MC. It was like the audio needed a carrier signal. It wasn't good quality, but I heard it just the same and was quite elated for a moment. If the f trimmer isn't needed, why is it in the SW alignment instructions? Without the Signal Generator hooked to the antenna input I get no stations. I have low static and can barely hear it::

Neal: Sounds like there are several issues here.
::First - just forget about the wavetrap E trimmer. That was a kludge to eliminate strong, pre-war maritime stations below the broadcast band that could come in through the set's IF. Those stations are now silent. The choke and trimmer E can be disconnected if you wish.
::
::Trimmer F is the BC oscillator. If the BC stations are coming in pretty much on the dial, you can forget that one too.
::
::On SW - with an antenna, can you pick up any stations? What are you using for a signal generator?
::Doug
::
::MORE:
::
::You said, "The F trimmer stil doesn't respond to SW adjustment." Trimmer F is the BC oscillator. It's out of the picture for SW.
::
::Here's the schematic: http://www.nostalgiaair.org/PagesByModel/385/M0025385.pdf
::Doug
::
::
:::::I have a 1942 Zenith console Radio Phonograph. Model Number 7S682...chassis number 7b02. I am in the process of alignment. I have successfully adjusted the I. F. frequency. I'm having trouble getting any adjustment out of my F trimmer. The wavetrap E trimmer calls for adjustment for minimum. Does that mean adjust so you cannot hear the I.F. Frequency? Do you make your trimmer adjustments with the wavemagnet antenna plugged in? I've been clear through the process ignoring the trimmers that wouldn't work and ended up with a Successful BC Band. When I made my SW trimmer adjustments I could barely hear 18mc and 16mc and they were in the right place. But they are barely audible. I've replaced all my capacitors except mica. I've even replaced the 3 electrolytic ones. Questionable resistors have been replaced. All bad wire has been replaced including the wire to the alto, base, etc. Is it possible to tune in the SW using only the wavemagnet antenna? I've done the steps sucessfully where it says to "use a single turn loosely coupled to the wavemagnet" and all that went OK. But going through the proceedure time and time again I still end up wondering about trimmer E and getting no response from trimmer F. If I'm listening to BC, trimmer F will respond to adjustment. Any ideas?
::::
::::try the sw adj again and see if maybe you are tuning in an image this will sound weaker than the fundamental frequency usually the right one is the 2nd one as your turning the trimmer out.the wave trap is just adjusted for the weakest signal it will still be there but i don't think there is much purpose for a wave trap anymore so its not critical.i also think some of the early forties sets didn't work great with a loop ant. it was just for strong stations try hooking to a longwire.butch
:::
:::how long of wire are you talking about?? I tried again. The F trimmer stil doesn't respond to SW adjustment.

Oh, sorry, I was looking at the info for the wrong chassis number (6B08). Ignore my comment about Trimmer F being for BC.
Doug
:::I have a Tenma Rf Signal Generator. The first word I heard out of the SW was today while I had about 10 feet of wire stretched out hooked up for an antenna. I only heard the station while I was inputing a signal in from the signal generator of 14MC. It was like the audio needed a carrier signal. It wasn't good quality, but I heard it just the same and was quite elated for a moment. If the f trimmer isn't needed, why is it in the SW alignment instructions? Without the Signal Generator hooked to the antenna input I get no stations. I have low static and can barely hear it::
:

That's Ok, I'm appreciating all the input from you I can get.
:Oh, sorry, I was looking at the info for the wrong chassis number (6B08). Ignore my comment about Trimmer F being for BC.
:Doug
::::I have a Tenma Rf Signal Generator. The first word I heard out of the SW was today while I had about 10 feet of wire stretched out hooked up for an antenna. I only heard the station while I was inputing a signal in from the signal generator of 14MC. It was like the audio needed a carrier signal. It wasn't good quality, but I heard it just the same and was quite elated for a moment. If the f trimmer isn't needed, why is it in the SW alignment instructions? Without the Signal Generator hooked to the antenna input I get no stations. I have low static and can barely hear it::
::
:

:That's Ok, I'm appreciating all the input from you I can get.
::Oh, sorry, I was looking at the info for the wrong chassis number (6B08). Ignore my comment about Trimmer F being for BC.
::Doug
:::::I have a Tenma Rf Signal Generator. The first word I heard out of the SW was today while I had about 10 feet of wire stretched out hooked up for an antenna. I only heard the station while I was inputing a signal in from the signal generator of 14MC. It was like the audio needed a carrier signal. It wasn't good quality, but I heard it just the same and was quite elated for a moment. If the f trimmer isn't needed, why is it in the SW alignment instructions? Without the Signal Generator hooked to the antenna input I get no stations. I have low static and can barely hear it::

i think doug was right in the first place trimmer f is the bc osc. trimmer and trimmer k is the sw osc. trimmer.i know it says the oppisite in the alignment info but if you look at the schematic i think this is the way it is supposed to be .it wouldn't be the first time i've seen schematics that weren't right i would sure give it a try it certainly won't hurt anything.butch.:::
::

::That's Ok, I'm appreciating all the input from you I can get.
:::Oh, sorry, I was looking at the info for the wrong chassis number (6B08). Ignore my comment about Trimmer F being for BC.
:::Doug
::::::I have a Tenma Rf Signal Generator. The first word I heard out of the SW was today while I had about 10 feet of wire stretched out hooked up for an antenna. I only heard the station while I was inputing a signal in from the signal generator of 14MC. It was like the audio needed a carrier signal. It wasn't good quality, but I heard it just the same and was quite elated for a moment. If the f trimmer isn't needed, why is it in the SW alignment instructions? Without the Signal Generator hooked to the antenna input I get no stations. I have low static and can barely hear it::
:
:i think doug was right in the first place trimmer f is the bc osc. trimmer and trimmer k is the sw osc. trimmer.i know it says the oppisite in the alignment info but if you look at the schematic i think this is the way it is supposed to be .it wouldn't be the first time i've seen schematics that weren't right i would sure give it a try it certainly won't hurt anything.butch.:::
:::
Okay butch, that's the way it seems to be shaping up. I can get much more response from K to strengthen my SW signal than F. And F makes significant responses in strengthening BC alignment. Thanks for the input. Things are looking pretty good today. I'm taking your suggestion on the longwire and I'm in the process of making it longer as we speak. I've heard all kinds of SW stations and now I'm working on strengthening the signal with longer wire.

::That's Ok, I'm appreciating all the input from you I can get.
:::Oh, sorry, I was looking at the info for the wrong chassis number (6B08). Ignore my comment about Trimmer F being for BC.
:::Doug
::::::I have a Tenma Rf Signal Generator. The first word I heard out of the SW was today while I had about 10 feet of wire stretched out hooked up for an antenna. I only heard the station while I was inputing a signal in from the signal generator of 14MC. It was like the audio needed a carrier signal. It wasn't good quality, but I heard it just the same and was quite elated for a moment. If the f trimmer isn't needed, why is it in the SW alignment instructions? Without the Signal Generator hooked to the antenna input I get no stations. I have low static and can barely hear it::
:
:i think doug was right in the first place trimmer f is the bc osc. trimmer and trimmer k is the sw osc. trimmer.i know it says the oppisite in the alignment info but if you look at the schematic i think this is the way it is supposed to be .it wouldn't be the first time i've seen schematics that weren't right i would sure give it a try it certainly won't hurt anything.butch.:::
:::
Okay butch, that's the way it seems to be shaping up. I can get much more response from K to strengthen my SW signal than F. And F makes significant responses in strengthening BC alignment. Thanks for the input. Things are looking pretty good today. I'm taking your suggestion on the longwire and I'm in the process of making it longer as we speak. I've heard all kinds of SW stations and now I'm working on strengthening the signal with longer wire.

:::That's Ok, I'm appreciating all the input from you I can get.
::::Oh, sorry, I was looking at the info for the wrong chassis number (6B08). Ignore my comment about Trimmer F being for BC.
::::Doug
:::::::I have a Tenma Rf Signal Generator. The first word I heard out of the SW was today while I had about 10 feet of wire stretched out hooked up for an antenna. I only heard the station while I was inputing a signal in from the signal generator of 14MC. It was like the audio needed a carrier signal. It wasn't good quality, but I heard it just the same and was quite elated for a moment. If the f trimmer isn't needed, why is it in the SW alignment instructions? Without the Signal Generator hooked to the antenna input I get no stations. I have low static and can barely hear it::
::
::i think doug was right in the first place trimmer f is the bc osc. trimmer and trimmer k is the sw osc. trimmer.i know it says the oppisite in the alignment info but if you look at the schematic i think this is the way it is supposed to be .it wouldn't be the first time i've seen schematics that weren't right i would sure give it a try it certainly won't hurt anything.butch.:::
::::
:Okay butch, that's the way it seems to be shaping up. I can get much more response from K to strengthen my SW signal than F. And F makes significant responses in strengthening BC alignment. Thanks for the input. Things are looking pretty good today. I'm taking your suggestion on the longwire and I'm in the process of making it longer as we speak. I've heard all kinds of SW stations and now I'm working on strengthening the signal with longer wire.

your wire should be 50 to 75 ft.long the higher up you get it the better and try to keep it away from powerlines and other things that cause interference.the wire can be almost anything, steel wire seems to work as well as copper even a 20 ft length works pretty well.i once tried my wifes big stainless steel mixing bowl i just clipped it on with a clip lead and it worked amazingly well until she caught me and took her bowl back so i think with antennas you just have to experiment and what works great for one set might not work for another.butch

:::That's Ok, I'm appreciating all the input from you I can get.
::::Oh, sorry, I was looking at the info for the wrong chassis number (6B08). Ignore my comment about Trimmer F being for BC.
::::Doug
:::::::I have a Tenma Rf Signal Generator. The first word I heard out of the SW was today while I had about 10 feet of wire stretched out hooked up for an antenna. I only heard the station while I was inputing a signal in from the signal generator of 14MC. It was like the audio needed a carrier signal. It wasn't good quality, but I heard it just the same and was quite elated for a moment. If the f trimmer isn't needed, why is it in the SW alignment instructions? Without the Signal Generator hooked to the antenna input I get no stations. I have low static and can barely hear it::
::
::i think doug was right in the first place trimmer f is the bc osc. trimmer and trimmer k is the sw osc. trimmer.i know it says the oppisite in the alignment info but if you look at the schematic i think this is the way it is supposed to be .it wouldn't be the first time i've seen schematics that weren't right i would sure give it a try it certainly won't hurt anything.butch.:::
::::
:Okay butch, that's the way it seems to be shaping up. I can get much more response from K to strengthen my SW signal than F. And F makes significant responses in strengthening BC alignment. Thanks for the input. Things are looking pretty good today. I'm taking your suggestion on the longwire and I'm in the process of making it longer as we speak. I've heard all kinds of SW stations and now I'm working on strengthening the signal with longer wire.

your wire should be 50 to 75 ft.long the higher up you get it the better and try to keep it away from powerlines and other things that cause interference.the wire can be almost anything, steel wire seems to work as well as copper even a 20 ft length works pretty well.i once tried my wifes big stainless steel mixing bowl i just clipped it on with a clip lead and it worked amazingly well until she caught me and took her bowl back so i think with antennas you just have to experiment and what works great for one set might not work for another.butch

::::That's Ok, I'm appreciating all the input from you I can get.
:::::Oh, sorry, I was looking at the info for the wrong chassis number (6B08). Ignore my comment about Trimmer F being for BC.
:::::Doug
::::::::I have a Tenma Rf Signal Generator. The first word I heard out of the SW was today while I had about 10 feet of wire stretched out hooked up for an antenna. I only heard the station while I was inputing a signal in from the signal generator of 14MC. It was like the audio needed a carrier signal. It wasn't good quality, but I heard it just the same and was quite elated for a moment. If the f trimmer isn't needed, why is it in the SW alignment instructions? Without the Signal Generator hooked to the antenna input I get no stations. I have low static and can barely hear it::
:::
:::i think doug was right in the first place trimmer f is the bc osc. trimmer and trimmer k is the sw osc. trimmer.i know it says the oppisite in the alignment info but if you look at the schematic i think this is the way it is supposed to be .it wouldn't be the first time i've seen schematics that weren't right i would sure give it a try it certainly won't hurt anything.butch.:::
:::::
::Okay butch, that's the way it seems to be shaping up. I can get much more response from K to strengthen my SW signal than F. And F makes significant responses in strengthening BC alignment. Thanks for the input. Things are looking pretty good today. I'm taking your suggestion on the longwire and I'm in the process of making it longer as we speak. I've heard all kinds of SW stations and now I'm working on strengthening the signal with longer wire.
:
:your wire should be 50 to 75 ft.long the higher up you get it the better and try to keep it away from powerlines and other things that cause interference.the wire can be almost anything, steel wire seems to work as well as copper even a 20 ft length works pretty well.i once tried my wifes big stainless steel mixing bowl i just clipped it on with a clip lead and it worked amazingly well until she caught me and took her bowl back so i think with antennas you just have to experiment and what works great for one set might not work for another.butch

I just realized my antenna wire travels below my main breaker box for my house. I think I better change that. Or my 120' longwire is not doing much good.