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POCSAG (Post Office Code Standards Advisory Group) is a common paging transmission format. POCSAG decoder software is able to display pager messages by using a normal radio scanner, a computer and a soundcard.
Ideally for POCSAG decoding you want a scanner with a discriminator output but I’m using an Icom IC-R2 and this doesn’t have one. You can decode using the audio out, but not at 2400 baud. You should be fine with 512 baud and depending on your scanner and the signal you may get 1200 baud. I have found that the IC-R2 can sometimes receive 1200 baud so long as the signal is clean.
I have had some luck listening on 137.975. It’s just a matter of playing with the line level in and the volume out of the scanner. Turning the auto squelch off helps a lot too.
Frequencies to try: 153.150, 153.225, 153.250, 153.275, 153.350, 466.075, 137.975
Note: The IC-R2 can be modified to add a discriminator output, there is actually a test point pad that can be used for this purpose. If you are feeling brave, the details can be found here.
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