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[aprssig] PSK31 PSK63 In Use on 30 Meters

Chris Moulding chrism at crosscountrywireless.net
Thu May 10 21:14:28 UTC 2012

Normal digimode programs can read the PSK63 APRS data. MMVARI can read 
the GMSK data modes also used in APRS Messenger.

The best APRS DX I know of was beacons and messages over several days 
between VK2JNG-63 portable in VK4 and W8LIW-63. This was back in August 
2010 when the sunspot cycle was still around zero.

VK2IO runs a 30m and 40m igate with APRS Messenger but he's not been on 
for the last week. FK8IH also ran a 30m APRS Messenger igate for a time 
from New Caledonia.


Chris, G4HYG

> Note that the APRS Messenger program encapsulates a typical APRS payload
> with standard packet-style headers and checksum before modulating the
> PSK or GMSK carrier. As a result, normal PSK programs such as Digipan or
> MixW can't inter-operate with APRS Messenger. At the current time,
> Messenger can only talk with other copies of itself. However it is
> incredibly more effective on weak noisy bands than classic 300-baud HF
> Igates are already operating in North America and Europe
> for this new mode, but I don't know about AU and NZ.

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