Glenayre Paging Link

From Signal Identification Wiki
Jump to: navigation, search
Paging Modes: AFSK Paging Link - POCSAG - Glenayre Paging Link - Motorola PURC Tone Remote Control - FLEX - ReFLEX - Golay Paging (GSC) - ERMES

Glenayre Paging Link
Glenayre paging link spectra.PNG
Frequencies 512 MHz,152 MHz
Frequency Range 152 MHz - 512 MHz
Mode NFM
Modulation QAM
ACF
Emission Designator
Location United States
Short Description Glenayre's Paging Link. With QAM being used, It is a way to upkeep a linked paging transmitter when no data is broadcast. Glenayre C2100/C2000 model control systems were likely to use this.
I/Q Raw Recording
Audio Sample

Glenayre's Paging Link. A way to upkeep a linked paging transmitter when no data is broadcast. Glenayre C2100/C2000 model control systems were likely to use this. Some transmitters in the United States still use this.

Transmitters may transmit modes such as V.29 QAMQuadrature Amplitude Modulation for this reason, if heard on an uplink/downlink frequency. Some may even utilize this mode with no data at all, thus being constant QAMQuadrature Amplitude Modulation noise. It also lets the receiver end know that the signal (or license) is "there" (hopefully somewhere, on the band) for other uses (either by a Morse ID, frequency/modulation, etc).

I/Q files[edit]

HDSDR/sdr# will help you with these IQs.


Additional Samples[edit]

A different example from Indiana Paging Network from an AFSKAudio Frequency-Shift Keying POCSAG transmitter of theirs. Transmitter waits 10-20 seconds before the noise is transmitted:

Another example, except with constant v.29 noise on 454.425 in Chicago, IL. Has a crappy sounding Morse ID as the txmitter is from 1998.


Additional Links[edit]

Additional Images[edit]