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Manual Tuning a old TRAM D201 HELP!

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darticus

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Manual Tuning a old TRAM D201
Anyone know how to do this? Seems strange to tune manually especially with extra channels. The tuning number doesn't match the station. Help Ron
 

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KB0VWG

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Apr 9, 2006
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Lyford, Texas
Cant help you with that question but just wanted to say pretty cool Trams.
Always wanted one of those.
kb0vwg
wqoi992
 

LoyalServant

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Aug 2, 2014
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SC
I know it came up in another thread about the channel selectors getting wonky on these.
I did look at a few on ebay to see about making a replacement.

IIRC the selector was just a couple of colpitts oscillators and the crystals were switched.
Seems like it would drift around but I guess back then it did not matter.

I like those. Good show pieces.
 

Chui56

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Mar 17, 2015
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Longview,Texas
Ron search for Tram manual, I will get the sequence wrong but here goes, set crystal/manual switch to manual..set both tuning dials to channel 12, pull calibration button out.rotate manual tuning knob until zero beat is heard. Zero beat is obtained by turning knob above channel 12 and slowly turning back towards center a loud beat note should be heard, decreasing in pitch as channel 12 is approached. Continue rotating in the same direction and a beat note increasing in pitch can be heard, zero beat is when you can't hear the two beats anymore, it is calibrated when there is no beat close to channel 12. I went back and forth a couple of times and it worked on mine, if you crystal function is aligned right.
 

BrettL

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Feb 24, 2015
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Anniston, AL
Trams rock. They were my first base radios. Both the 201 and 201a. Those things rejected bleed over like no other. Great sound from receiving dx signals. They always need to be loved and cared for. Kissed, hugged, and talk to. I kept mine covered after they cooled off a bit. I also would put a fan on mine. I never mounted it. Keeps ya warm in the winter!
 

JayMojave

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Dec 13, 2007
Messages
722
Location
Mojave Ca
Hello Darticus: This is a old thread so hope this helps out some.

CBTricks . com has the owners manual and schematic diagram. A well written I must say.

Tram Diamond Corp. Model D201A

Good Luck, I bought one that was not all working right, but after some time fixed it. Loud and Proud.

I added/placed a small quiet fan in the back to keep it semi cool as it gets really hot other wise. The Tram D201A have a problem with the Channel Select Switch as it is intermittent at times, and there is no replacement that I know about. I use a short piece of 3/8" rubber tubing to place pressure on the channel select knob, it is wedged between the lower chassis lip and the channel select knob.

There are DSS VFO circuits out there that can replace the old crystal mixing circuit, have even seen one on U-Tube. Food for though.

Jay in the Mojave
 
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