Question about Cobra 200 GTL DX 4-Channels Base CB Radio

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Question about my cobra 200

How do I increase power output on my cobra 200?

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Re: Question about my cobra 200

No need to increase power output. you can take a radio with 100 watts and a radio with 10 watts that had had a modulation kit installed and the 10 watt radio will out talk the 100 watt radio ALL day long. the best thing to do would to put a mod kit in it and have the dead key cut back to 1/2 watt then put as little amp behind it. with those mods it will be loud and clear. hope that helps

Posted on Dec 30, 2007

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How do I increase power output for a cobra 148 gtl the latest Chinese version

best way is to leave the radio in piece and obtain a linear amplifier to do the job a 10 meter ham radio amplifier will do nicely but you must re-tune it for the 27 mhz band 10 meter band is 28 mhz.
RF amps work best using side-band mode.

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Is it possible to convert the cobra 29 wx nw st sound tracker cb to 10 meter amateur band?

No it cannot. If you want that buy a Ranger or a Galaxy.

The 29 can be altered to increase modulation and turned down in power to match it to amp for increased output of power.

Set to dead key a watt or so with a 100 watt amp it would dead key low and swing to 80 to 100 watts pep.(peak envelope power)

Mar 16, 2012 | Cobra CB Radios

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Hi Ralph, what do you mean "turn up the receive" ? You can not increase the wattage output without changing internal components. To increase RF gain and max performance you can upgrade your antenna and tune the SWR to 1:1 to 1. Other than that, a power microphone & bi-linear amplifier are the only ways to make it more powerful.

Dec 22, 2011 | Cobra CB Radios

1 Answer

Cb only has 200 yard range -- after that I can not hear anyone.

Check the antenna feeder with a meter (resistance range), try disconnecting the antenna from the end also this will check faults on the cable, if there is a resistance this usually means faulty feeder. If there is an infinatly high resistance this is fine. (open circuit)

Get a power meter and check the output power, if its lower than whatever high power should be 4-5watts on a non-sideband radio, then your output transistor/driver has blown.

Jun 15, 2010 | Cobra 29 LTD CB Radio

1 Answer

Intermittent low to medium power output from radio, any ideas

The problem is not your radio.One of your connectors -pl259- is dis-solder or open.Could also be a loose antenna connection or an open coax that when you move it,makes contact.

Jul 14, 2009 | Cobra 200 GTL DX 4-Channels Base CB Radio

2 Answers

New power chip


To my knowledge on a Cobra 29 board, replacing TR14 (2SC2029) with a 2SC1969 is supposed to improve/increase the TX power output. Additionally however, L12, 13 & 14 must also be adjusted while the 29 is hooked up to a dummy load/watt meter. Should you wish to try for experimental purposes only:
  • Modulation improvement - adjust VR4 to desired level or cut D11or max talkpower remove TR18 .
  • replace TR14 with 2SC1307 (or 2SC1969).
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Jul 08, 2008 | Cobra 29 LTD CB Radio

1 Answer

Cobra 200gtl High Power Transmit problem??

Depending on the type of power supply, radio frequency (RF) energy from the transmitter may be 'fooling" it into thinking that you're overloading it. Check to see if there's any discernible dimming of the meter lamp when this problem occurs, if so, the supply is the culprit.

Otherwise, its probable that the final amplifier transistors are overheating, either they are 'leaky' or not properly attached to the heat sink.

Jun 23, 2008 | Cobra 200 GTL DX 4-Channels Base CB Radio

1 Answer

Cobra 200

Hello Jim. These radios do not work well with any power mic including the power echo mics because they have good modulation boards in them. But if you still want to try then check

Mar 26, 2008 | Cobra 200 GTL DX 4-Channels Base CB Radio

1 Answer

Cobra 200 gtl dx audio output

Could be the jumper on the back for hooking up external speakers fell out.

Jan 27, 2008 | Cobra 200 GTL DX 4-Channels Base CB Radio

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