tlwaltz
Member
I have my BCD436HP set up in my car for GPS scanning during my 4 hours of commuting to work everyday. I found that the internal speaker output barely breaks over the road noise so I decided to use the AUX input on my car stereo as I have with other handheld scanners in the past. I used a 3.5mm stereo patch cord (male to male) and everything worked perfectly...until I plugged in the GPS to the scanner.
Once the GPS is added I get a large amount of what sounds like data noise/interference over the audio signal into the stereo. I tried a number of combinations with volume settings between the scanner and the but could not determine for sure whether the noise is coming from the scanner or the amplifier circuit. On headphones there is no noise, but when plugged into my AUX jack there is (but only if the GPS is plugged into the scanner). If the GPS is set up and powered but not plugged into the scanner there is no noise when using AUX so it seems to have something to do with the GPS signal once it enters the scanner. I can't explain why it isn't there while on headphones (potentially dynamic range of headphones or filtering?) but is present once sent in through the AUX jack.
I still need to perform some more experiments to isolate the problem a little better, but has anyone else experienced this?
I plan to try using an MP3 player into the AUX jack while the scanner is set up with the GPS as well just to completely rule out the possibility that the interference has something to do with the AUX amplifier circuit picking up a harmonic from the GPS as well. I am not yet 100% sure that the noise is coming from the scanner especially since I don't hear it in the headphones.
Once the GPS is added I get a large amount of what sounds like data noise/interference over the audio signal into the stereo. I tried a number of combinations with volume settings between the scanner and the but could not determine for sure whether the noise is coming from the scanner or the amplifier circuit. On headphones there is no noise, but when plugged into my AUX jack there is (but only if the GPS is plugged into the scanner). If the GPS is set up and powered but not plugged into the scanner there is no noise when using AUX so it seems to have something to do with the GPS signal once it enters the scanner. I can't explain why it isn't there while on headphones (potentially dynamic range of headphones or filtering?) but is present once sent in through the AUX jack.
I still need to perform some more experiments to isolate the problem a little better, but has anyone else experienced this?
I plan to try using an MP3 player into the AUX jack while the scanner is set up with the GPS as well just to completely rule out the possibility that the interference has something to do with the AUX amplifier circuit picking up a harmonic from the GPS as well. I am not yet 100% sure that the noise is coming from the scanner especially since I don't hear it in the headphones.