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I just put a new radio shack cb antenna boats and on my jeep it seems to work but thay say it is quite the antenna is factory adjusted how can i get to the way it should ?

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I need a little more clarification,do you want to
know how to set the SWR ?
If it is working good............if it ant broke don't fix it
HA HA. Check your SWR.

Posted on Sep 24, 2009

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My cobra 18 wx st comes on and goes tru all channels but has no noise at all coming thru it. none of the signal strength lights come on or anything. its brand new.


Sounds like a antenna issue. Make sure coax is in good order.and antenna is connected properly. You might have to get a "swr" meter to put in line between radio and antenna to make sure antenna is "tuned" to were the radio is operating. Radio shack sells a ok low budget swr/power meter.

Nov 09, 2012 | Cobra 18 WX ST 40-Channels Base CB Radio

2 Answers

What antenna for what cb


bad ground/bad swr/any antenna will work on any CB radio as long as its an antenna for the CB range.

Oct 11, 2012 | Radio Shack Powered ON TRC-444 40- Channel...

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I purchased a Midland 1001z in the fall of '09 and installed it on my boat. I is mated to the existing Shakespear 8' CB antenna. The CB worked great last summer while boating with my brother and...


Vibrations on the small cb's make the internal circuit boards come loose and its intermitted or will not RX or TX.. Check the antenna with another cb. using an SWR METER.. or have someone check it.. SWR should be free if you take it to them.. to check.. Make sure the antenna, mounts, and coax are ok.. if soo then its in the cb itself .. Email us if you need more help or need the radio looked at, the post office has flat rate boxes cheap nowadays. were in Temple, TX at the CB SHop.

May 30, 2011 | Midland 1001Z 40-Channels Base CB Radio

1 Answer

I have spotty reception on a handheld CB and was wondering if there is a testing procedure I can use to check the antenna and radio. I have a multimeter. It's a radio shack handheld with weather bands...


The antenna is your problem not much gain. Height is everything tx and rx. Although it would not compare to a conventional cb size negates performance. Seeing is believing in this case hearing get adapter to connect to standard coax of antenna. (PL259) to BNC Coax Adapter Radio Shack sells them. And dont ask or buy any radios there. They are hardly the radioshack of choice anymore.

  • If you put 4 watts into a four-foot antenna, you will get the same power out of that antenna as if you were putting 2 watts into a 102-inch whip.
  • If you put 4 watts into a 3-foot antenna you will get the same power out as if you were putting about 1.5 watts into a 102-inch whip.
  • If you put 4 watts into a 7.5 inch antenna on a hand held CB, it would put out as much power as a third of a watt into a 102-whip.
  • If you put 4 watts into a 102-inch whip antenna, it is the same output as if you put 11 watts into a 3-foot whip.
  • If you put 4 watts into a 102-inch whip antenna,, it is the same as if you put 14 watts into a 28-inch antenna.
  • If you put 4 watts into a 102-inch whip antenna, it is the same as if you put 54 watts into a 7.5 antenna.


May 21, 2011 | Cobra HH 38 WX 40-Channels Handheld CB...

2 Answers

I got this midland 77-092 CB radio it first happened when i putted the antenna with has magnet base on the radio, the radio has metal casing, and it began to make a weird noise, after that got quite but...


Hi, my name is John. Welcome to FixYa. It sounds like you shot or blowed a IC FINAL. It can be ordered if your local CB shack does not have in stock. Thanks for choosing FixYa..John

Nov 20, 2010 | Midland 77-092 40-Channels Base CB Radio

1 Answer

Uniden pc78elite antenna light


What kind of antenna is it? Have you checked your standing wave? To do this process you will need a field strenth or a SWR meter to do it,would be cheaper to have it checked at Radio Shack or you can buy one,and do it yourself. Some radio antenna light come on when transmitting,....hope this helps....

Mar 15, 2010 | Uniden PC78ELITE 40-Channels Base CB Radio

2 Answers

On my 77-099 Cb MIDLAND Radio I wonder can i use a antanna that is used for vehicle can be made for a home base radio place.I BOUGHT A MIDLAND CB RADIO AND MADE IN TO A HOME BASE RADIO THAT IS MADE FOR...


Generally this is not a good idea. The antennas that are designed for use with a car, use the body of the car as a ground plane. If you try to use this in a house (or even outside the house), it's not going to work.

Your only chance at even getting such a setup to work would be to attach the antenna to a LARGE flat piece of metal, approximately the size of a car, which is then grounded with a long metal rod into the earth.

I'd really suggest looking into buying a proper home CB antenna, which would then need to be mounted somehow to the roof of the house (or as high up as possible.) If this is not a feasible option, you should do a Google search for "CB Dipole Antenna", and get instructions on how to build and tune your own antenna. Dipoles are not overly difficult to construct, and perform quite well.

Nov 08, 2009 | Midland 77-099 CB Radio

2 Answers

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.

Oct 10, 2009 | Radio Shack TRC-447 CB Radio

2 Answers

Cobra NW LTD CB radio


start out by getting a good antenna like a wilson or k-40 if your using it on a big rig make sure its a metal mirror and door a lot of big rigs use fiberglass and thats a nono you must get a no ground plane antenna...its all in the antenna...good luck doc's cb shop ny

Apr 09, 2008 | Cobra 29 NW CB Radio

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