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cb radio positive ground system


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I've hooked up many cb's in positive ground F models and my B model, you just have to hook them up "backwards"- you have to ground the hot (fused) wire on the radio, run the other to the switch or what ever power source you're tapping into.

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Producer of poorly photo-chopped pictures since 1999.

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Use to do this many times for guys at our place.

You have to mount the radio in a box or with rubber to keep it insulated from the chassis ground.

Then just hook the ground of the truck which is positive to the red (pos.) lead on the radio and the hot side of the truck which is negative to the black (neg.) lead on the radio.

You also have to insulate the antenna from chassis ground because it also feeds ground back to the radio through the coax cable.

A radio guy told me one time to cut the ground in the coax cable and install a resistor in line with it and you wouldn't need to insulate the antenna. also this would not affect the ground plane of the antenna and make it work much better which it did. Unfortunately I can't remember the value of the resistor.

Maybe someone else can help you with the resistor value you would need for this.

There our also many people that sell power inverters for antiques which would also probably do the job although they are as a rule a little on the pricey side.

Ron

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Do you talk backwards? coollaugh.gif

Not if you talk into the speaker and listen to the mike... :whistling:

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"OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK"  Thomas Edison

 “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’

P.T.CHESHIRE

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ya,as tom said just hook the black wire to the juice wire,,,use a tester to see witch wire is live.then ground the red..good luck...bob

that's all I ever did Bob, and they worked fine. Got one in the mixer now that works fine, I never did any of that other stuff.

Producer of poorly photo-chopped pictures since 1999.

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that's all I ever did Bob, and they worked fine. Got one in the mixer now that works fine, I never did any of that other stuff.

lool...i know what you mean,,,niether did i ,,,, i hooked allotta them up in the 70,s,,,just like you said there,,,you see gearhead girls oppinion,,,wow good advice from a obambi lover.hahahahahahahahahahahahahahahaha...wife is cookin sausage and eggs,,,gonna be using,,,your fabulous sause in a few minutes...woohoo...bob
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Dear gentlemen this bring back a lot of memery's I ran a lot of R models back in the early 80"s mast were posative ground unit , I took the ash tray out and mounted a piece plywood over the top of the dash board . put my cb radio and an AM/ FM radio on this. Could hook is up in any unit I had to run, THe radio"s were insulatied from the thruck just grounded throw the antenna mount on the mirror bracket

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Dear gentlemen this bring back a lot of memery's I ran a lot of R models back in the early 80"s mast were posative ground unit , I took the ash tray out and mounted a piece plywood over the top of the dash board . put my cb radio and an AM/ FM radio on this. Could hook is up in any unit I had to run, THe radio"s were insulatied from the thruck just grounded throw the antenna mount on the mirror bracket

thanks for your input,,,lets hope that helps him,,,,and tom,,i think what baby 39 was trying to explain was the (proper) way to do it,,,,and yes you will blow out your finals,,if you hook a CB up backwards,,,even with fuses in both leads,,,ive done it...bob
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lool...i know what you mean,,,niether did i ,,,, i hooked allotta them up in the 70,s,,,just like you said there,,,you see gearhead girls oppinion,,,wow good advice from a obambi lover.hahahahahahahahahahahahahahahaha...wife is cookin sausage and eggs,,,gonna be using,,,your fabulous sause in a few minutes...woohoo...bob

Mowerman, my condolences on your candidates loss. Now I suppose you're going to argue that negative ground in a muslim socialist conspiracy...

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Mowerman, my condolences on your candidates loss. Now I suppose you're going to argue that negative ground in a muslim socialist conspiracy...

no,,,but atleast you read my posts we do appreciate you inputs,,,,my complaint,,,isnt romney lost,,,my complaint is now we all lose,,,lets hope im wrong.bob
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And if you don't like the current president/senator/congressman, in just a few years we get to pick another one. Ingenious system of government the founders designed with power spread over three diverse branches of government, isn't it?

So sorry, but in 3 years there will only be a single branch

"OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK"  Thomas Edison

 “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’

P.T.CHESHIRE

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And if you don't like the current president/senator/congressman, in just a few years we get to pick another one. Ingenious system of government the founders designed with power spread over three diverse branches of government, isn't it?

thier all outa touch,,,we need to sweep the whole system...bob
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