Greetings all,
The Civil Air Transport Security Authority (CATSA) frequency in Calgary has a rather unique sound to it that I'm wondering if others have heard before. I don't think it's a fault with my scanner - a new 996 - nor a problem with the radio system, as the people seem to be communicating just fine.
The audio has a distinct "chop" to it, as if the PTT was being interrupted 2 or 3 times per second. When the audio isn't being transmitted, there's solid squelch hash/static. The transmitter never fully drops to dead air during the individual transmission, but it's definitely hard to hear what's being said.
The (single, conventional, non-trunked) frequency is 859.3375 - and the tone is CSQ as far as I have been able to tell (unless the static is some kind of reverse-burst PL/DPL to disrupt scanners). I haven't bothered to get close enough to the airport to listen to the repeater input on 814.3375, but maybe I will sometime soon.
Just wondering if anyone has any inklings on what this might be - some kind of privacy function, or a borked repeater, or what?
The Civil Air Transport Security Authority (CATSA) frequency in Calgary has a rather unique sound to it that I'm wondering if others have heard before. I don't think it's a fault with my scanner - a new 996 - nor a problem with the radio system, as the people seem to be communicating just fine.
The audio has a distinct "chop" to it, as if the PTT was being interrupted 2 or 3 times per second. When the audio isn't being transmitted, there's solid squelch hash/static. The transmitter never fully drops to dead air during the individual transmission, but it's definitely hard to hear what's being said.
The (single, conventional, non-trunked) frequency is 859.3375 - and the tone is CSQ as far as I have been able to tell (unless the static is some kind of reverse-burst PL/DPL to disrupt scanners). I haven't bothered to get close enough to the airport to listen to the repeater input on 814.3375, but maybe I will sometime soon.
Just wondering if anyone has any inklings on what this might be - some kind of privacy function, or a borked repeater, or what?