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Author Topic: TMC AO-103 and AO-105 VFO schematics wanted  (Read 2588 times)
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VE7EPP
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« on: July 25, 2016, 02:48:27 AM »

Hi everyone

I'm looking for schematics and information on the TMC AO-103 and AO-105 VFO's.

Any help is appreciated. I need to know what they are out of and power output  the schematics would really help in knowing that I can restore them properly and use them.

David VE7CN 604-781-1773 anytime.
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"Why would anyone need more than one radio" (nonsensically uttered as a new ham with a new all-mode-all-band radio)
K4NYW
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« Reply #1 on: July 25, 2016, 01:59:47 PM »

All things TMC at www.tmchistory.org
John K4OZY was given all the factory archives, drawings, photos, etc. and has been scanning like a mad man.....
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VE7EPP
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« Reply #2 on: July 25, 2016, 04:06:51 PM »

Thanks.  I was there but too lazy I guess to look through the site.  I've found that the units I have here appear to be a part of the Control Master Oscillator CMO1 and CMO2.

Thanks again.
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"Why would anyone need more than one radio" (nonsensically uttered as a new ham with a new all-mode-all-band radio)
KL7OF
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« Reply #3 on: July 26, 2016, 09:14:15 AM »

Cmo1 and cmo2....used on GPT 10K and GPT 40 K? Were you able to get a schematic ??

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K4NYW
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« Reply #4 on: July 26, 2016, 10:25:36 AM »

tmchistory.org master John K4OZY says -
"Those appear to be components of the CMO.  The CMO is a sort of VCO version of the VOX.. a control voltage applied to a varactor can slew the frequency around by a small amount.  The CMO was used in the SBG exciter---you have one!

The drawings for AO-103 and -105 are sizes 2 and 8 and haven't been scanned yet.  I'll add them to my list of things to get done!"

The CMO manual with schematics is at
http://www.tmchistory.org/tmc_manuals/manuals_db/cmo/tm_cmo-1-2_8_15_61.pdf
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