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3300 connex NO TX , RX IS FINE PUT RADIO ON PA NO AUTO ON THE PA bacbdude46localnet.com thank you

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Hello cbdude, You have a bad microphone.

Posted on Nov 07, 2008


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1 Answer

What does it mean when the red light flashes on the radio and I get no response


On most models this would indicate activity on your frequency. The fact your radio is not receiving (Rx) could be because the transmitting (Tx) radio is just beyond your range; your radio has a different PL code than the Tx radio, or your radio has a problem.

Oct 16, 2015 | Two-Way Radios

1 Answer

One of 2 set Motorola MH230R isn't transmuting ring or voice, but receiving is fine. All settings the same. What's I am missing?


Check your batteries. Transmitting (Tx) takes more power than Receiving (Rx). Also, check to see if you have the Qt filter turned on, if so, turn it and all other special features off (zero) and try using the radios in a very basic mode. If you cannot Tx or Rx with good batteries, and all special features turned off, you have a problem with one of the radios.

Sep 26, 2015 | Motorola MH230R Two Way Radio

1 Answer

How do i repair a Kenwood ts450s fron tx and rx on both sidebands at the same time.Other modes work fine?


this is typical of Kenwood, reseat EVERY connector in the radio and try again, if it still does this, it more than likely has developed some bad solder joints

Sep 20, 2014 | Two-Way Radios

1 Answer

Stuck on rx mode


Rx is an abbreviation for receive. (Tx is transmit) There are a variety of reasons a radio will be "stuck" in Rx:
1) Another radio in the group is stuck in transmit and you cannot reply if your radio is receiving the other radios transmission.
2) Your radio is programmed for Rx only.
3) Your radio has a Tx problem such as a bad mic, or something covering the mic opening.
4) Your battery is low or bad. It takes more energy to Tx than to Rx.

Best regards.

Feb 07, 2014 | Cobra LI3900-2DXVP (14 Channels) 2-Way...

1 Answer

Tk3312 will not recieve repeater but audio is fine and channels with out pl are fine


1- Did you choose the right Tone for both RX & TX?

If you have RF present but not the right tone, the green led should turn on.
One of the side key should be a Momentary "Squelch Off" (By default, it programs like that). Use it when you you see the green led turn on.

If you have the wrong Tone Squelch programmed, the side key will let you hear the repeater to confirm the problem.

2- If it didnt do the trick, Look for a RX/TX frequency mismatch. maybe your RX/TX frequencies are wrong for this channel?

3- If you have checked all the above, maybe your radio have a bad ceramic filter and your unit has lost it's sensibility. (Youll hear only people near to you.)
If it's the case, usualy only one half of the filter goes bad. Try swapping the Bandwith type in programmation. If WIDE, try NARROW or the opposite. If you receive in narrow but not in wide, the filter is bad. In more than 50 radios with Sensitivity problem, I only got one with both Wide/Narrow sides of filter bad.
If you have access to a spectrum analyser, on a "RX Test" you should see ~0.2uV. Anything higher than 0.3uV mean you have a serious RX problem.

Sep 06, 2012 | Kenwood Tk-3312 Uhf Handheld Radio

1 Answer

We have a problem with one of the hand sets. It will not transmit. The other one works fine. The TX will come on, and we can hear it coming across the problem hand set. The problem hand set shows the RX ....



  • Check the settings of the CTCSS tones on both radios and make sure they are the same. It would seem if you are hearing a transmission from the other radio but cannot transmit out of that same radio than that radio is malfunctioning. It may be time for a new pair.

Regards, Tony

Apr 22, 2011 | Midland LXT345VP3 Two Way Radio

1 Answer

Cx80 stuck in rx mode , power cycled, swapped batteries, changed channels, will only swtich to tx when ptt button pressed, otherwise always in rx mode, other radio from package works fine


But thats how a walkie talkie works, it stays in Receive Rx mode UNTIL you press the PTT button,, then it Transmits Tx, and when released it goes back to Rx, receive?

Feb 18, 2010 | Two-Way Radios

1 Answer

One of my walkie talkie has an RX on the display and you can send but you cannot hear the other person. How can I remove the RX as that seems to be the only difference in them. Thank you


depending on what radio you have, they are programmed in different ways, rx means recieve signal

and tx means transmit signal, if you have a mode button, you will have to scroll through it until you

get to the menu that allows you to change the radio transmission. it looks like that radio is only

programmed to receive signals and not transmit. good luck!

Nov 11, 2009 | Cobra Microtalk 100 FRS Walkie Talkie...

1 Answer

Connex 3300


Bring it to a cb shop and ask for a bench check, or ask a trucker to hook it up and check it out.

Jan 01, 2009 | Two-Way Radios

1 Answer

Cobra 29ltd classic : no rx / tx


Hi,

D23 is the reverse protection diode and it shorting is the primary reason your fuse blew. As you posted, power was applied in reverse, hence other components would also fail. Pls check:
1. D22 - 9.1V Zener Diode
2. TR23 (2SC1096) 9 Volts regulator
3. D19 - 5.1 Zener Diode
4. IC4 (TA7222) - Audio Amp
5. TR14 (2SC2029B/10) - Finals
6. TR15 (2SC2028B/20) - Driver
7. Most capacitors over 220uF (like C123, C114 & C112)

Hope that this be of help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Feb 04, 2008 | Two-Way Radios

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