Question about Radio Shack TRC-503 CB Radio

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Radio shack trc-502 cb radio

You very kindly sent me schematics for the model trc-503 - however mine is a model trc-502, which is very different.  The trc-503 was for a portable type - mine is a car mounted type. If you have schematics for the trc-502, i would be glad to receive them. thanks'

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YOU CAN GET SCHEMATICS FOR THAT MODEL
I JUST LOOKED IT UP FOR YOU........THE BOOK IS SAMS PHOTO FACT...WEBSITE IS

WWW.SAMSWEBSITE.COM

THEY HAVE EVERY CB RADIO EVERY MADE

GOOD LUCK

Posted on Feb 21, 2009

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1 Answer

As this radio shack trc 503 cb radio will only transmit but it has loss it audio sound and no noise as nobody seems to don't why this has loss it audio and soun


If its RX audio you have lost then your audio chip is faulty or the speaker, try an external speaker or new internal speaker

Oct 24, 2013 | Radio Shack TRC-503 CB Radio

4 Answers

Radio Shack TRC-502 cb radio


Here is the owners manual I'l see if I can get my hands on a internal schematic

http://support.radioshack.com/support_electronics/doc62/62220.pdf

May 14, 2008 | Radio Shack TRC-503 CB Radio

1 Answer

Need the wiring for mic on trc 502


My understanding of the TRC-502 is that it is 49 MHZ not CB. With that said I cant find
a microphone diagram for that specific radio. I found a 503 but that is a CB. I couldnt find a
wiring diagram for either radio. You could always call Radio Shack or The Shack, contact them online or call and ask for the info.
Call: 1-800-843-7422
http://www.radioshack.com/home/index.jsp

Mar 17, 2011 | Radio Shack TRC-447 CB Radio

1 Answer

How do u attach a pa to the trc 503


Hi! Thomas

There is NO capability to use a PA speaker with the TRC-503.

Sorry.

Feb 28, 2011 | Radio Shack TRC-503 CB Radio

1 Answer

Where can I get a circuitboard schematic for my


Try the radio shack website.
They have some service manuals that you can download.
Best of Luck!

Mar 11, 2010 | Radio Shack TRC-503 CB Radio

1 Answer

I need schmatics for a 503


503 a or plain old 503 . one is a hh the other is a radio .You can get one of them at www.cbtricks.com

Jun 27, 2009 | Radio Shack TRC-503 CB Radio

1 Answer

Problem with TRC-503 Radio Shack CB


Does this radio have a pa/cb switch and if so is it on pa?

Feb 17, 2009 | Radio Shack TRC-503 CB Radio

2 Answers

I need schematics for my radio shack trc-503 cb radio


Found what you need:

This comes in two parts -

first, this link:

http://www.eserviceinfo.com/download.php?fileid=34491

second, this link:

http://www.eserviceinfo.com/download.php?fileid=34492

save both to your desktop and execute part 1. It will create an Adobe PDF file. So make sure you have the Adobe PDF Reader installed - http://www.adobe.com/products/acrobat/readstep2.html

May 14, 2008 | Radio Shack TRC-503 CB Radio

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