Question about Connex Radio Communications

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How do i fix my connex 3300 cb radio it went ground

Have complete short in hot and ground connection thru the radio. Ohm meter shows complete circuit thru radio with off and on switch in the off position

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1 Answer

The reverse voltage diode protection has gone short

you simply need to cut the diode then get down say a big thankyou and hope your CB is alive a tip is to look for a diode like a 1n4007 or 1n4007 just behind the power socket or on the pcb across the + and grounding you can measure it with a multimeter

a tip to find a bad short is this set the multimeter to 20ohm range and not beep then you can test youll see the closer you get too the short the less the resistance becomes so you can be sure of the diode to cut... other than this there is usually a coil also on + and - to filter out rf garbage from a cars ignitions etc {not needed now} anyway this small block coil can melt
however if this has happened then its gubbed a good test is does it complain before you switch it on or after if its dead short before then the protection diode is gone if you then find when you switch it on it blows fuses then the audio ic has failed


there is many more things can go wrong with cb radios i can help so try these things lets see

Posted on Nov 23, 2014

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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Gavin93
  • 66 Answers

SOURCE: connex 3300 c.b radio

The Connex radio is a division of Cobra, and no offense, but Cobras are one of the cheapest radios around. The problem with your Connex is a simple receiver malfunction. The receiver probably worked great until it was put into storage for a long time, you can replace the receiver, or you can fiddle around with the receive gain until you hear something. But you may just want to send it to a radio store and have it looked at, to be honest with you, Connex is a terrible radio, they sound good, but they're terrible radios. Go with Galaxy or Uniden radios, you won't be disappointed.

Posted on Jul 02, 2008

  • 4 Answers

SOURCE: connex 3300

youll find the answer at www.cbtricks.com

Posted on Dec 11, 2007

One Wire
  • 126 Answers

SOURCE: SWR calibration waaay off the chart

You are using an inline swr meter to set your swr right, not looking at the meter on the radio? Here is the process to set swr on an antenna:

You must have an inline swr meter, which can be purchased online or from a truck stop. The ones at truck stops are cheap ones, but will do the trick for the most part.

You connect your antenna 18ft coax to the antenna plug of the swr meter, and a jumper coax (any length) to the transmitter plug of the swr meter and then to the radio.

Close all doors and make sure no one is messing around with the vehicle or antenna. You must be set up as you would normally be transmitting.

Now set your cb radio to channel 40 and your swr meter to fwd. Key up your microphone1.gif and at the same time turn the set knob on the swr meter until the needle is at the line that reads set. Unkey your mic and set the the swr meter to ref. Key up again and note what your reading is. Now leave the swr meter in ref and turn the cb to channel 1. Key up and take your reading. If the reading on ch 1 is higher than ch 40 you must raise the stinger on your antenna. If ch 1 is lower than 40, you lower your stinger. You are trying to get lower than a reading of 3 and as close to 1.5 as possible. If you lower your stinger as far into the antenna as it will go and you need it shorter, you cut the bottom of your stinger no more than 1/2" at a time, and recheck your swr reading after each cut.

Once you have gotten the best reading you can, connect your antenna directly back to the radio.

The setting of your swrs is to make your antenna as efficient as possible, by trying to get it as close as you can to a 50ohm impedance. THE ONLY PART OF YOUR SYSTEM THAT CAN CHANGE YOUR SWR IS YOUR ANTENNA, not your coax and not your radio. Your radio and coax can give you false readings, but only the antenna can actually change the swr.

On the swr meter, the fwd/ref switch stands for forward (power that is being transmitted out) and reflected (power that is reflected back into the radio.

Just for information sake, the swr cal switch on your radio is used to set the meter to reflect the swr that your antenna is set at. The meter on your radio is like a dummy light on your car. ONCE AGAIN, YOU CAN NOT SET YOUR SWR ON YOUR RADIO, only the antenna.

Posted on Jan 23, 2008

Goofguyster
  • 379 Answers

SOURCE: poor receive with my Connex 3300 HP radio

get a K-30 antenna ist magnetic if that dont work your speaker in the Cb is broken

Posted on Sep 14, 2009

  • 1274 Answers

SOURCE: Knob setting of front of radio (Connex 3300)

The best way to set it is to get you a radio check, go to channel 19 and ask someone about three to five miles away to give you a radio check, start with your modulation all the way open and go from there.....hope this was helpful...

Posted on Apr 20, 2010

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buy a external swr meter.. usually like 10 bucks at any truck stop.
o your gonna need a jumper wire too for this.which is a short piece of coax you can get at any cb shop

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Connex 3300 c.b radio


The Connex radio is a division of Cobra, and no offense, but Cobras are one of the cheapest radios around. The problem with your Connex is a simple receiver malfunction. The receiver probably worked great until it was put into storage for a long time, you can replace the receiver, or you can fiddle around with the receive gain until you hear something. But you may just want to send it to a radio store and have it looked at, to be honest with you, Connex is a terrible radio, they sound good, but they're terrible radios. Go with Galaxy or Uniden radios, you won't be disappointed.

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