Tip & How-To about Galaxy Radios DX-959 40-Channels Base CB Radio

Galaxy DX 959 CB radio no transmit or talkback

Hi, I have a problem with this CB radio. The PA works good but after installing the MOSFET kit as mentioned here http://cgi.ebay.com/DUAL-POWER-TRANSISTOR-MOD-KIT-GALAXY-949-959_W0QQitemZ190256621565QQcmdZViewItem?hash=item190256621565&_trkparms=72%3A1205%7C39%3A1%7C66%3A2%7C65%3A12%7C240%3A1318&_trksid=p3286.c0.m14 it wont transmit and I cant hear myself on talkback nor do I hear the roger beep. The PA amp works though.

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2 Answers

will a mosfet 520 swing kit give me mor watage to my cobra 29 lx 29 lx


yes , but for the amount you get its hardly going to be worth it.this radio has all kinds of limiters in and it won't let you do one thing without doing this other thing first.A small 100 watt kicker will do a better job and nothing to do to the radio except turn the wattage down so its linier friendly.

Jul 30, 2014 | Cobra 29lx Cb Radio W/clock 29 Lx Lcd

1 Answer

Hi I've replaced the final with rf 520 & some caps etc, but now the niddle is not moving can you tell me what is wrong or what should I do thanx George.


Check the polarity of your caps (not ceramic of course they are not polarized) and the compansion parts or diode if you built your own. The diode banded end should be toward front of radio.
Check that you have not bumped that pa switch it has happened to me numerous times.
Just a side note after go back thru your work and it starts swing again if it is a china made you may need to remove a turn off of L14 to get max swing. Dont leave the plug out it creates harmonics!!
I like this mod site it has a mosfet mod without compansion parts http://www.dtbradio.com/tips.html Good luck

Aug 19, 2011 | Cobra 29 LTD CB Radio

1 Answer

I have a 25 wx st I did a erf 2030 kit the radio fires up wheather channels work but cb side is real weak trans and receive!?


The MOSFET mod is not a good mod as it is so touchy. Your best bet is to undo the mod and go back to where you were. If not feasible then I suggest a different radio technician for proper install. I refuse to do this as they are tricky. Yes I know the good old time finals are hard to find.

Sep 09, 2009 | Cobra Radio Communications

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