Question about Radio Shack TRC-447 CB Radio

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How do i install rfx75 to trc-447 cb radio - Radio Shack TRC-447 CB Radio

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  • Radio Shack Master
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Did you buy this in its own packaging or was it given to you.If you bought it there should be a diagram as to how to install it.

Posted on Nov 04, 2013

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Posted on Jan 02, 2017

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SOURCE: 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

Posted on May 14, 2008

  • 3 Answers

SOURCE: I was wondering what was the range for the

Antenna :
-should be tuned, have good coax with no pinches, whip is centered over highest flat metal surface, no metal beside adjacent to whip, power is wired to battery direct, not to ignition or cigg lighter. whip is wiped clean of corrosion, whip is up, longer is better.
Praire City car-to-car: 15-20 km's
Praire Rural car-to-car: four-thirds over the horizon. Probably 60 km's.
Alot further over water.
Less within trees and mountains/valleys.
Google "Ham radio" & "ducting" "inversion" "skip" "sun-spots"
these refer to a condition where a radio signal getting stuck between the upper and lower atmospheres and travel intact for 1000's of km's (canada to mexico for example)

Posted on Sep 06, 2009

  • 86 Answers

SOURCE: I am looking for a manual for a TRC 474 CB Radio

what do you need to know about it

Posted on Oct 19, 2009

  • 141 Answers

SOURCE: tunning the antenna on radio shack cb trc-447

After installing the antenna, follow these steps to adjust the
standing wave ratio(SWR).
1. Turn on the CB.
2. Set S/RF/SWR/CAL to CAL.
3. Key the Mic and rotate SWR CAL so the meter points
to CAL.
4. Unkey Mic.
5. Set S/RF/SWR/CAL to SWR.
6. Key Mic again and note the actual measurement on
the SWR scale. Refer to the following table to interpret
the reading.

1:1 - 1.5 Great
1.5 - 2:1 OK
2:1 - 3:1 Not So Good
Higher than 3.1:1 Terrible

The ideal standing wave ratio (SWR) is 1:1, or a meter
reading of 1 on the SWR meter's top scale. A SWR ratio
of 1.5:1 to 2:1 is excellent for most mobile CB antenna
applications.

Check the SWR on Channel 1 and Channel 40
If the SWR is higher on 1, make the antenna longer
If the SWR is higher on 40, make the antenna shorter
Most antenna's are adjustable. Make small adjustments at a time.

Posted on Jan 30, 2010

  • 141 Answers

SOURCE: how many amps does a Reakistic CB radio TRC-474

4 amps MAX

Posted on Jan 30, 2010

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Add more channels


not worth the time or effort to do on this radio. years ago when it was the thing to do , yes but not today when you can get a radio with those channels already installed .

Jan 24, 2013 | Radio Shack TRC-447 CB Radio

1 Answer

Need a replacement mic for a TRC 447. Can't find one, and Radio Shack is of no help....AT ALL !!!!


The radio takes an electret condenser microphone. You can also use a dynamic type in a pinch, but audio quality and strength varies depending on the microphone. Several sources for replacements came up from a search, and here's one. If you need to rewire the plug or install a different one to fit the replacement mike to the radio, wiring information is here.

Mar 07, 2011 | Radio Shack TRC-447 CB Radio

1 Answer

I need a mic for my TRC-447 where can I find one? they no longer carry it at radioshack.


You have not specified which country, state or county you are in so we cant even suggest a shop in your country. Find a local CB dealer and take the radio there, they will be able to wire up a microphone for the radio.

Dec 28, 2010 | Radio Shack TRC-447 CB Radio

1 Answer

MIC WIRING ON A TRC 447


this is one of those radios where the only one that works is the original.

Oct 13, 2010 | Radio Shack TRC-447 CB Radio

2 Answers

Need to replace microphone on a Radio Shack TRC 447 CB. 6 pin Anybody know?


A great mic is the RK56 $39.99+tax in Temple, TX on Hwy 95.. And comes with a 4pin for cobras but can be wired for any radio

Aug 09, 2010 | Radio Shack TRC-447 CB Radio

1 Answer

Looking for the manual for the Radio Shack TRC-447 CB Radio


Try this manual, it may or may not be the correct one, but it will be close enough to help you.

Jun 12, 2010 | Radio Shack TRC-447 CB Radio

1 Answer

I have no problems just would like to tune and peak my trc-447


RV2 is modulation. turn that up to get full modulation. L9 and L12 is AM power.

Dec 16, 2009 | Radio Shack TRC-447 CB Radio

4 Answers

Radio shack trc-447


According to the service manual for the TRC-447, the only adjustment is for "power" which is #L205. The only other step in the transmitter alignment is for the "S" meter.
On the Cobra, VR4 is AMC, L14,L13,L12 is AM power.

Jan 31, 2009 | Radio Shack TRC-447 CB Radio

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