Originally Posted by novkids
I had a similar problem with my '06. I found a solution by adjusting the knob on the top of the CB labeled "AUX VOLUME". I don't remember if it needs to be turned all the clockwise or all the way counter clockwise but it did have to be all the way one side or another. I have no idea why this worked or what it does but it cured the muting.
Well, I think I wrote too soon last night saying I'd tried this. I decided to experiment a little more rigorously on my ride to work this morning and here is what I found. I can't explain it, but this is what I am seeing. I would be curious if you have a minute to see if yours performs more or less the same. The main difference I found compared with what you wrote above is that the control doesn't have to be at one stop in order for the music to come on, it just has to NOT be at or very near the clockwise stop.
If I turn my aux volume control all the way clockwise (as viewed from above), this quiets the noise in the helmet speakers, but also kills the using permanently. I found today that if I turn it just a couple of "teeth" counterclockwise, just to the point that I faintly hear the noise in the helmet speakers, the music will come back on (after the 4 second wait, of course). I had turned it all the way clockwise as that killed the noise in my helmet so I thought that was goodness. Turns out, not so!
I decided tonight that I would go from stop to stop on that control one "tooth" at a time on the dial and see what happened. About the second or third time I turned the dial one tooth counterclockwise, the music magically came on! I kept going (fortunately I have a 30 minute commute!) the rest of the way home and the radio stayed on all the way until I hit the counterclockwise stop. This does cause more background noise when the CB mutes the music, but the odd part is that once the music comes on the background noise seems to largely disappear. I only hear that when the music is muted and nothing much is coming in over the CB. So, it appears I can set this aux control a couple of teeth off the clockwise stop and minimize the background noise yet not mute the music.
Installing and learning to use this CB has been an adventure, but it is slowly getting better all the time. I just now need to find a willing partner to use for some transmission testing. I am concerned about this as I heard several truckers tonight talking about a police road check (and heard them quite clearly), but when I transmitted to a couple of them I got no reply at all. So, I may still have a transmit mode problem to work on and I am getting a lot of background noise from the engine. I suspect that this is due to taking a couple of short-cuts and not following the installation schematic precisely. I did this intentionallhy and with the full understanding that I was taking a risk.
I will now go back and undo my shortcuts one at a time so I can see the impact of each.
1. First up is to remove the stingray again and connect the small ground wire to the FM radio chassis per the schematic. This one is a pain, but I suspect may give the most reduction in noise.
2. Depending on the results of that, my next step will be to move the main ground wire from my Fuzeblock unit to the "-" battery terminal.
3. Depending on that result, my next step will be to move the power relay supply wire from the Fuzebock to the + battery terminal. At this point, I will be in precise conformance to the schematic in the instructions.
4. Lastly, if I am still not satisfied with the noise immunity, I will get a few clamp-on ferrite cores such as those sold by Radio Shack and place them on the power feed line as close to the radio as I can get them. I believe it was Lynn Keen who said he was able to fit his under the handlebar cover which would be ideal placement from an electrical perspective. I will also place a core on the PTT cable as close to the intercom as I can get it. The PTT wire is a pretty long "antenna" so I would not be surprised if it is carrying noise into the intercom
5. The final step, if the transmit power is feeble, will be to try a Firestik NGP antenna and cable. I don't relish trying to manage the 17' or so of cable that this antenna requires, but I think I can fit it in the space between the seat and the trunk since I have my trunk in the rear-most mounting position.
Stay tuned as the saga continues.