AFSK Paging Link
Paging Modes: AFSKAudio Frequency-Shift Keying Paging Link - POCSAG - Glenayre Paging Link - Motorola PURC Tone Remote Control - FLEX - ReFLEX - Golay Paging (GSC) - ERMES
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|---|---|
| Frequencies | 72 MHz,850 MHz,928 MHz,76 MHz,450 MHz,460 MHz,470 MHz |
| Frequency Range | 72 MHz - 928 MHz |
| Mode | NFM |
| Modulation | AFSK |
| ACF | — |
| Emission Designator | — |
| Bandwidth | 9 kHz |
| Location | Worldwide |
| Short Description | A variant of POCSAG/FLEX with audio FSK modulation as both waveforms utilize pulse trains. Typically found as uplinks/downlinks to pager network transmitters. |
| I/Q Raw Recording | Download file |
| Audio Sample | |
POCSAG and FLEX are read as pulse trains in FMFrequency Modulation as their spectrum of FSKFrequency-Shift Keying is only 2 carriers switching on and off. With this in mind, additional transmitters can use that pulse train waveform to be re-modulated as AFSKAudio Frequency-Shift Keying modes in an FMFrequency Modulation baseband ranging from Bell-202, Lojack, or any other modes as uplinks or downlinks in the RFRadio Frequency bands.
Contents
Audio files:[edit]
I/Q:[edit]
https://drive.google.com/open?id=1weV6dasw3XuFUqomQhKPgW242Hk4Ma5q
Images:[edit]
other examples:[edit]
Some other examples done with the dutch POCSAG encoder part of SoRFMon's suite of demo software, and modulated with various audacity plugins to create realistic waveforms:
The result when AFSKAudio Frequency-Shift Keying is mixed in with Flex @6400 BaudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.:
