So im here at my desk and when an agency talks on the scanner it will come across all nice and clear and then it will crackle out and then back to clear. it only does it on sum channels Just curious what it might be
So im here at my desk and when an agency talks on the scanner it will come across all nice and clear and then it will crackle out and then back to clear. it only does it on sum channels Just curious what it might be
Make and model of scanner?
Frequencies affected? May the problem just be simplex RX on the fringe so to speak?
Possible to share a recording with us?
Have you tried monitoring the same freqs with a different receiver?
Could be as simple as a loose speaker wire on your end.
The sudden change in signal indicates to me that there may be another strong source of interference causing attenuation on the signal you're trying to receive. Just guessing, but it's possible.
Or it could be arcing from a power line.
Sounds like you are listening to analog simulcast system.(multiple transmitters TX'ing at the same time on the same frequency) If you get in the right areas the signal will come in and out of phase, especially in fringe areas. Try moving the scanner to different areas of the building if you can.
Pager interference isn't a "crackle", it's more of a combination tone/buzz.
If you don't know the exact frequency causing the interference, you're totally wasting your time trying to filter it out.
The 137-174 filter WILL NOT remove pager interference. If the range specifies the passband, it's passing the entire VHF band, INCLUDING ALL STANDARD PAGER FREQS. And it's blocking everything UHF.
If you don't know the freq causing the noise, you're completely wasting your time trying to block it.