by CPSK
Hi;
I am wondering whether any RR's use CTCSS (not DTMF) tone squelching. This would prevent unwanted transmissions from other services from opening the squelch on the receiver.
I am particularly interested in this because my radio is capable of using tone squelch (it is actually amateur equipment), and it is used all the time on amateur bands, and police bands.
It would make RR monitoring a lot easier, since I am receiving a lot of IMD (intermod) on my radio. If tone squelch was engaged, I would not hear these offending signals because the tone would not be present.
I have looked at various RR radio frequency websites, and none mention CTCSS tones.
I can set my radio to scan for them, but with RR transmissions being so infrequent and short, it is nearly impossible to lock in on any tones.
Thanks
FW
KE2KB
I am wondering whether any RR's use CTCSS (not DTMF) tone squelching. This would prevent unwanted transmissions from other services from opening the squelch on the receiver.
I am particularly interested in this because my radio is capable of using tone squelch (it is actually amateur equipment), and it is used all the time on amateur bands, and police bands.
It would make RR monitoring a lot easier, since I am receiving a lot of IMD (intermod) on my radio. If tone squelch was engaged, I would not hear these offending signals because the tone would not be present.
I have looked at various RR radio frequency websites, and none mention CTCSS tones.
I can set my radio to scan for them, but with RR transmissions being so infrequent and short, it is nearly impossible to lock in on any tones.
Thanks
FW
KE2KB