Tip & How-To about Radio Communications

MODIFY YOUR CB RADIO.

One trick is to change wires in radio to large gauge. change all resistors in back for 1/2watt or 1 watt kind. I heard you get 6 more watts this way. You can Jump diodes in back near transformer(Caution, read about it on Defcom mods.com First) make you you get right diodes before doing this. Change coils in back for thick gauge less winding coils. Spread them. **USE A WATTMETER OR BYRD_SWR METER ALSO WHEN DOING THIS***

Posted by on

Radio Communications Logo

Related Topics:

Related Questions:

1 Answer

can you turn the rf gain pod up for better receiving


Yes you can turn up VR pot inside to recieve max level but will cause noise to be max too. I don't rightfully remember which one does it but I'll refer you to Defcom cb radio mods for a spec sheet
or Snakedoctors cb radio mods google site. Go to these radio mods sites on Google search and type in radio model. It will tell you what Vr inside to turn up RX of RF gain. Turn up modulation and written instruction if you are handy with solder gun how to change a resistor or cap to make it more sensitive recieve. How to replace final stage and resistors to 1/2 watt size for 6 more watts output and spread coils 1/8 inch apart like a comb for 100% microphone loudness or swing output. say 3 watts to 40 watts output. More windshield wiper swing in meter makes loud voice and extends range with Power final boost. Most people prefer to keep a mobile at around 11 watts swing to 45 watts.(but on generic radio meter will show 2 to 5 watts-its not accurate just a cheap indicator you are forward swing). Even though factory says 4 watts FCC hogwash. They come tuned from Cobra with 11 watts to 14-22 watts.Cobra really peaks them babies so competition doesn't beat them out like new louder radios made by Galaxy 55. Even though law says blah blah (corporations bend it)sales pitch Galaxy very heated with Cobra on the game(rich can do what they want)Galaxy is 20 watts factory with big promise to 40 watts dual finals. So Cobra updated and said "screw it we will break the law too" Now Cobra is loud as ever and offering their own super mod versions and dual final radios with 45 to 65 watts output with ranges on SSB & USB of 1500 miles on a strong good outdoor antenna.

Feb 15, 2013 | Cobra 29 LTD CB Radio

2 Answers

I have a trailer house that has a 100 amp breaker box in it. I has gas for heat, water heater and stove. I am changing them to electric. Will I need to change the panel put to a 200 amp.


Its probably not a bad idea. Thats alot for a 100A panel to handle, a range needs a 50A, a water heater needs 30A, and the heat will need a 50A or a 60A breaker... Plus whatever else is in the house will be a bit more than the 100A service can handle. But if you don't have the money it will do for a while because for the most part they won't all be pulling at the same time. Word to the wise get at least a 30 space panel when you upgrade, I always install a 40 space panel because for the cost difference its well worth it for future needs because you'll fill it up quicker than you think and you'll have space for anything else you may want to add later on. Hope I helped

Dec 09, 2010 | Your One Source Homeline Circuit Breaker

1 Answer

How Do I Wire A Amp Gauge To A mini .With A alternator


You have to run the amp gauge in line with the alt. You will have to remove the large hot wire from the alt and ether connect another longer wire to the end or move that wire inside the cab to the location of the Gauges. This wire will go to the + positive side of your new gauge. Then you will have to run another wire back to the post on the Alternator. These wires need to be large enough to handle the extra length and all the amps the alt. can put out max, say 120 amps at max. You will have to run about a #4 or #6 wire. Which is vary large, give or take, about like wiring in a 800 watt amp for sound. Please be careful, and disconnect the battery before messing with any wires, be sure of any radio or security codes you need once you reconnect the battery.

Oct 03, 2010 | Mini Cooper Cars & Trucks

1 Answer

Cobra 29 modulation modification


did you make sure the caps stripe is facing the back of the radio? If not, its the wrong way.

Also, don't use a 1/4 watt resistor because it will get too hot for it to last. use 1/8th.

changing the cap size will not change output, however it will change the tone. Bigger the cap, the deeper the tone of audio.

to be honest with you, high output mods are worthless in these radios. they are fine with out them. mosfets are unstable and are very dirty transmit finals. As well if you are planning to use a linear you may hit it too hard unless its a high drive, in which case you will need more then 35 watts swing to drive it fully. A stock cobra 29 that has been peaked and tuned, then the swing mod put in, 220uf e cap and 100 ohm resistor, which should give you about 2 watts, should swing to about 27 watts, and kick an amp in the pants.

I run a cobra 29 in my blazer with a dave made 5 pill, and I key on 6 pills and I near keyed on a 2x8. very close. All that I have done to the radio is peak and tune, (of course I have a few tricks with that up my sleave which I don't usually share with just any one.) and variable power, wich will control the dead key, which is basically a varible swing kit. I run it just under 2 watts, just enoug to get a 125 watt dead key out of the amp. The amps swings over 920 watts.

any more swing from the radio will beat up the pills in the amp.

Jan 06, 2010 | Cobra 29 LTD CB Radio

Not finding what you are looking for?

895 people viewed this tip

Ask a Question

Usually answered in minutes!

Top Radio Communications Experts

eradiostore
eradiostore

Level 3 Expert

1654 Answers

Brad Brown

Level 3 Expert

15557 Answers

Mike Charette

Level 3 Expert

1795 Answers

Are you a Radio Communication Expert? Answer questions, earn points and help others

Answer questions

Loading...