RadioRaft, official UK site. RadioRaft is an automatic decoder of numerous modes of radio data transmission on shortwaves, VHF or UHF. RadioRAft decodes RTTY Baudot, NAVTEX, ACARS, GMDSS-DSC, POCSAG, PACTOR, PACKET, SITOR, numerous ARQ and FEC modes, CW Morse, RUM-FEC, ASCII, CIS-11, HNG-FEC, AUTOSPEC, SPREAD. It requires an interface connecting the receiver to the PC, known as Hamcomm interface.

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This is an old page saved for posterity. It is no longer updated.POCSAG (Post Office Code Standards Advisory Group) is a common paging transmission format.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.

From an education point of view, it specifically assumes that 'if, as teachers, we want to foster understanding, we will have a better chance of success once we have more reliable models of students’ conceptual structures, because it is precisely those structures upon which we hope to have some effect' (von Glasersfeld: ). He started definining constructivism as an epistemological positions stating that observations are due to (non-independent from) the observers and their contexts. In the last century scholars such as von Glasersfled and von Foerster contributed to the implementation of this position.

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, 137.975Note: 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.– Pocsag program for Linux, decodes pagers using sound card (Also handles AX.25, DTMF and ZVEI) (49k)– Pocsag program for Windows, decodes pagers using sound card (Also does Flex, ACARS, MOBITEX & ERMES) (366k)– Pocsag program for Windows, decodes pagers using sound card (402k). Hi,There is now a cheap ($20.00) TV USB dongle that uses chipsets RTL2832U and E4000 (tuner)that can now be used for SDR (Software Design Radio) between 64MHz and 1.7GHz. Normally it comes with software to decode TV and or FM broadcasts.

It would be great if your POCSAG software was able to interface and receive signals from this SDR. $20.00 for a receiver makes it real cheap for decoading POCSAG.Some information:I hope you have time to implement this project.Regards,Rod.Comments are closed.