20 Most Recent Uniden Bearcat BC 145XL 16 Channel Scanner Radio - Page 4 Questions & Answers

go online for manual use make and model

https://www.wearecb.com/cb-microphone-wiring.html

Often I found a scanner needed all the positions to be filled. My older Bearcat did. For instance 151.575. Perfectly fine, yet the scanner would not save it. If I put 151.57500 in, it takes it every time. Go figure! If that did not fix your question, please ask again.

if it transmits on AM and LSB then it should transmit on USB . You will need two devices, a spectrum analyzer and an oscilloscope. If you don't have them then take it to a tech to get it fixed.

check it out first . try it on the 76 and see if it works most but not all 4 pins work with other radios other then the one you want it to.

did you try the buffer or the pre driver ?

If it is a four pin then a cobra mic should do .

Do a good for schematics, service manuals for your make & model. There's several sites that have manuals that you can download or view for free.

check the connections internally, some of the wires may be loose and causes that problem.

Hi u don't mention what diode :::::::; there are power diode's signal diode's plus a lot more..cheers

Yes return it.

While you could solder something up, why not just get an adapter to take the single 3.5mm 3 conductor to two 3.5 plugs, One Ear and the other mic. Should work if I understood the application correctly.

https://www.manualslib.com/manual/1051746/Uniden-Bearcat-Bc-855xlt.html Uniden BearCat BC 855XLT Operating Manual