Question about Cobra 19 DX IV CB Radio

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CB transmission Cheapo cobra 19 DX IV recieves well, SWR of 1.3 with 18' coax and 4' firestick but no range transmitting and it is garbled and undiscernable. coax attaches to antenna mount same as back of radio and mounted on steel bumper with nylon washer top and bottom. no separate ground wire on antenna.

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Hello 64driver,

Make sure the radio is grounded properly and that the SWR is around 1.2:1, 1.3:1 is good but try to get it to 1.2:1. Also take a power output reading while keying the mic. To do this with your power meter put it in-line with the CB and your antenna and key the mic you should get about 4 to 5 watts PEP. If this is the case your unit is putting out the proper power level, if not have the power amplifier checked by a qualified repair shop.

I hope this helps

Shuttle83

Posted on May 14, 2008

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adjust the SWR and you may just find your volume

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You'll need to find another CB radio for someone to check to see if they are receiving your transmission.

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Would a slightly damaged co phase coax affect radio transmitting capabilities


Yes. Co-phasing is very touchy anyway. The co-phase unit needs to be matched and it needs to be in almost perfect condition.

Apr 26, 2010 | Cobra 19 DX IV CB Radio

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High SWR


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Apr 11, 2009 | Cobra 19 DX IV CB Radio

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Apr 10, 2009 | Cobra 19 DX IV CB Radio

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Cobra 19 DX IV CB Radio Gets no signal at all


my only idea is the frequency that Canadians transmit/recieve on is different than us down south (in the USA). I know Europe and the UK use a different frequency range so my guess is that Canada uses a different radio frequency range than the U.S. making you unable to communicate with fellow radio users. You may be able to search the frequency range for Canada vs. the U.S. and see if there's a difference. Hope this helps...and again, it's just a thought.
Montana, USA

Jul 08, 2008 | Cobra 19 DX IV CB Radio

1 Answer

Cobra 19 DX IV


No, those radios are good radios. I have one just for setting swrs on antennas.

First, I went back and read your last question. You said you have a nylon washer on top AND bottom? Did you mean one under on the top and bottom side of the antenna mount? You only need theone on the top of the antenna mount, which stops the antenna itself from being grounded out. Having one on the underside stops the outter part of the stud, the one that touches the outer screw on part of the coax from being grounded. Without that getting a good ground, you have no groundplane, which will cut your tx/rx to a max of 2 miles. Also, how close is the two setups. Many times, if two vehicles are setting next to each other, you will not receive or transmit properly, just get a nasty garbled with a hint of a squeal.

If this doesn't help, please reply here or shoot me an email at:

rollincbmods@yahoo.com

Dean Pitts
Rollin CBs
Mt. Vernon, TX

May 15, 2008 | Cobra 19 DX IV CB Radio

2 Answers

Cb transmitting problem


Hello kaelea,

 

Check your ground wire and by your post I gather that you are user some form of headphone device, I say this because normally the speaker is off when the microphone is keyed. I would also check the controls on the headset if you are using one.

 

I hope this helps,

 

Thank you,

Shuttle83

Oct 16, 2007 | Cobra 19 DX IV CB Radio

1 Answer

My send is fuzzy and hard to understand. I recieve just fine


Perhaps you need to check your SWR? See the following link: http://www.transmission1.co.uk/modules.php?op=modload&name=News&file=article&sid=11

Jul 26, 2007 | Cobra 19 DX IV CB Radio

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