If I break off one of the two antennas will it prevent the radio from transmitting?

Take off the plastic mirror cover . Im not sure on a volvo but for wat its worth on my peterbilt the plastic cover held on with philips screws. Take that off and turn ur mirror all the way facing inside with switch on door, just like if ur adjusting the mirrors. Once u do that Theres a little tab u push on the side of the plastic holder that locks the mirror in place , flip that and mirror should come all the way off, be careful and dont let it drop or snap the wires for ur mirror heaters. Once mirror is off u should get a good look of the braket and coax cables thats running to ur antenna mount

 

If the trucks all have the same radios maybe switch the mics. Would only take a minute and would rule that out without touching the tool box. If the needle swings after the switch you may have found the problem.

 

If my cb mic acts up my needle will not swing. That's why I am making the suggestion. I have broken cb antennas off and if you're close enough you could still be heard. Mine is also a dual set-up. Keep us posted and good luck.

 

Yes it should just screw into the connector. Shouldnt take but 15mins. Could buy a cHeap antenna for 15 bucks and call it a day. I wouldnt worry about getting in trouble for that tho. #### happens and guys rip their antennas off all the time in tree branches . good luck let us know wat happens

 

If you've kept your nose clean they probably won't care. #### happens. If they freak out over that then maybe you should find a better company.

 

You didn’t mention what brand of cb radio you have. If it’s a Cobra 29, there are a couple of switches you need to check. Make sure the S/RF/Cal/SWR switch is in the S/RF position. If it happens to be in SWR mode, the needle won’t move when you key the mic. Also make sure the CB/PA switch is in CB position or else no one will hear you, because the radio won’t transmit in PA mode. Of course make sure your on the same channel as the person next to you with the mic gain knob turned up. If still nothing, then there’s a problem in the radio. This should still apply to most other brands of radios.

 

Really what?

i get you don't know a lot so here is why I asked.

Some truck manufacturers have multiplexed the cb and the am/fm antenna while others have used the right antenna as the am/fm antenna and the left one as the cb antenna, this is why I asked.