Question about Connex 3300 240-Channels Base CB Radio

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My 3300 will not key up, it will break squelch but not talk.

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Check your mic. antennas swr, and see if they have a problem otherwise it may be an internal problem. make sure the mic connector isn't rotating in the case and shorting out....

Posted on Jan 06, 2011

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Posted on Jan 02, 2017

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1 Answer

Where should I have my rf gain selector hi or lo


rf gain is about local coms if you want your cb to RX far away stuff set it too high but local stuff like friends family that are local then you want too set rf gain to low then only local signal can trigger the squelch ... so the radio will ignore the static and only trigger you when needed ? see what i mean rf gain ye a DX guy will set it high or too listen to people like over 50K away
and let then break the squelch...min

Mar 24, 2014 | Connex 3300 240-Channels Base CB Radio

1 Answer

My Connex 3300 the Recieve is going out I can here will close but thats it.. Antenna, Coax, SWR's are fine..... Could it be the recieveing ship in it going out or what???


Hi, my name is John. Welcome to FixYa. Turn your RF GAIN to MAX. and SQUELCH to MAX. If you need further, let me know. Thanks for choosing FixYa.....John

Nov 17, 2010 | Connex 3300 240-Channels Base CB Radio

1 Answer

How can i disconnect the talk back on a connex 3300 plus? pleasa be specific on directions. thanks


in older connex 3300's you cannot disable the talk back. Its part of the audio chain. If you disable the talk back you will loose your audio. There are 2 things you can do.

Hook a relay to the speaker so that when the radio key's id disconnects the speaker. (Big pain, not worth the trouble.)

The other will not disable the talk back but it will stop any squealing.

Use a noise canceling mic. An RK-56 will work great. You will get no squealing with that mic.

Oct 19, 2010 | Connex 3300 240-Channels Base CB Radio

1 Answer

Can't break squelch ? Have Uniden Bearcat hand held scanning radi


Look at the squelch knob. If it is turned fully counterclockwise, it is in "Auto". Turn the knob clockwise to enter the manual mode and adjust the range untill static is heard. Reverse direction until the static is no longer heard.

Jul 17, 2010 | Uniden BC248CLT Base Scanner

2 Answers

Do the Uniden walkie talkie (UHO36SX) on listening mode (RX) normally give out a loud rushing noise? It would be impossible to have it on in a quiet place waiting for someone to talk.


No, the radios should be silent (squelched) when not receiving a transmission. Appliances (computers, televisions, even refrigerators) can generate enough "hash" to break the squelch and give you that "rushing" noise. Make sure that the radios are at least 4 or 5 feet apart, and try moving them to different locations to clear up the problem.

Bill B

Jun 01, 2010 | Radio Communications

2 Answers

My blackbox radio breaks squelch only when button is pushed.


I am familiar with radio programming software , but not your model. You could have squelch adjustments or settings that need to be set in the software end. Did you set something to mute? Can you set the signal level for the radio to open squelch? Are you able to connect to a service monitor and inject a signal and see where it does break squelch? These are things I would check.

Aug 25, 2009 | Klein Electronics Blackbox-U 2-Way Radio

2 Answers

Cobra PR4750WX - how do I adjust squelch?


You are right there is no adjustment. You can however turn the squelch off and this maybe what is happening to you.
To turn the squelch off you press and hold the button that is just below the push-to-talk button for at least 5 seconds.
To turn the squelch back on, you either press (less than 5 sec.) and the same button or change channels.
When talking with a specific party or group, you should use the tone coded squelch (CTCSS) and that will mitigate the noise if you are not already doing that.

Apr 18, 2009 | Cobra 22 CHANNEL 2-WAY RADIOS

1 Answer

Radio Mic


Check the squelch on your radio thats not recieving. If there is a monitor button ( when pushed you will hear static) try pushing it.. then get someone to call you so you can check if you can hear them. On these radios you have 2 types of squelch....1 is called carrier squelch.... it basically opens when there is a strong enough signal. This lets you only hear strong signals and "squelch out" the distant ones and background static. The2nd. is "tone squelch" ... with your radio they are often called privacy tones. If you have 2 radios set with the same privacy tones you will only be able to hear each other... only radios that are transmitting with that privacy tone will be heard on your radio. Its a high frequency tone that can't be hear by the human ear that gets "embeded" with the transmitting signal. The recieving radio hears it and opens the squelch. So... if the radio thats rxing (recieving)your signal has its squelch set for just carrier squelch it will hear any signal thats strong enough to break the squech open.... basicaly any radio within a certain range. But if your radio (one with problem) has its squelch set for privacy tones you will not hear any other radios except the ones set with the same privacy tone.... the squelch will not open until it gets a tx signal with the right tone.... so if the txing (transmitting) radio is not using tone squelch but is using carrier squelch.... and the rxing radio is set for tone squelch... the rxing radio will not hear it. With tone (privacy tones/codes) squelch you need a tone to open the squelch and then the audio can be heard... with carrier squelch the squelch will open if ANY radio is within a certain range. Check the squelch setting on the problem radio... it could have a privacy tone set. Try pushing in the monitor button so you can hear static ( you want to hear everything including static) on both radios... tx on one radio at a time and listen if it can be heard on the other with the monitor button pushed. If you can't hear any audio when the broken one is transmitting then it COULD be the mic.... if you can hear both radios with the monitor button activated than the radios are txing and have tx audio and are working... if thats the case its the privacy tones that are the problem. Take care

Sep 12, 2007 | Garmin Rino 120 2-Way Radio

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