Like most of you here, I am interested to monitor the airband; namely civil airband (108-137 MHz), military airband (225-400 MHz), military land mobile (138-150 MHz) and the aeronautical HF (2-24 MHz).
I am aware that there are trunk tracking (vs conventional) scanner, digital (vs analog) modes and CTCSS, DTCS tone signaling. For purpose of monitoring the above mentioned bands do I need and thus be concern with any of these rather advance features, i.e.: trunking, digital mode, CTCSS DTCS tone? Are such functions use in any ATC frequencies?
Then there is the ACARS and CPDLC. For now I understand that there are numerous softwares to decode analog VHF ACARS transmissions via a receiver and a sound card. SITA mentioned that they are shifting from ACARS over analog VHF to ACARS over VHF Data Link (VDL). Also there is ACARS over the Inmarsat and Iridium satallites. So my question is, is it possible to receive and decode ACARS messages over VDL and satellites as well as CPDLC?
What's the future for airband voice communications? Will it go digital? As asked in paragraph 2, are there any ATC frequencies on a trunking system? Heard about VoIP; is it related to this?
Thanks a lot!
I am aware that there are trunk tracking (vs conventional) scanner, digital (vs analog) modes and CTCSS, DTCS tone signaling. For purpose of monitoring the above mentioned bands do I need and thus be concern with any of these rather advance features, i.e.: trunking, digital mode, CTCSS DTCS tone? Are such functions use in any ATC frequencies?
Then there is the ACARS and CPDLC. For now I understand that there are numerous softwares to decode analog VHF ACARS transmissions via a receiver and a sound card. SITA mentioned that they are shifting from ACARS over analog VHF to ACARS over VHF Data Link (VDL). Also there is ACARS over the Inmarsat and Iridium satallites. So my question is, is it possible to receive and decode ACARS messages over VDL and satellites as well as CPDLC?
What's the future for airband voice communications? Will it go digital? As asked in paragraph 2, are there any ATC frequencies on a trunking system? Heard about VoIP; is it related to this?
Thanks a lot!