[aprssig] HF APRS over PSK63 using DroidPSK

Chris Moulding chrism at crosscountrywireless.net
Sun Nov 23 05:28:59 CST 2014

Wolfgang Phillips, W8DA has added an APRS over PSK-63 beacon facility to 
the beta version of his DroidPSK Android app.

This will use the phone GPS to generate the PSK-63 audio tones to 
transmit a HF APRS over digimodes packet over a HF SSB radio.

The beta version of the app with this facility can only be obtained at 
present by signing on as a beta tester on the DroidPSK Google+ page.

Julian White OH8GEJ who has asked for this facility has posted a YouTube 
video demonstrating the app here:

HFAPRS over PSK63 using DroidPSK: http://youtu.be/Fe3-vA5tirY

The app works directly with igate stations running the APRS Messenger 
program available here:


Most igate stations are operating on 10.1497 MHz so if you set your dial 
frequency to 10.1487 MHz and use a PSK-63 tone frequency of 1 kHz on USB 
you will be on 10.1497 MHz.

It's an exciting development as it allows anyone with an Android phone 
and a HF rig to be able to send HF APRS over digimodes. You don't need 
to carry a PC or have VHF or WiFi/phone coverage anymore!

If Wolfgang gets enough feedback he will add more functionality to the 
HF APRS version of his app.


Chris, G4HYG

Chris Moulding
Cross Country Wireless
7 Thirlmere Grove, Bolton, Lancs, BL4 0QB, UK
Tel/fax:     +44(0)1204 410626
Mobile:      +44(0)7752 391908
Website:     http://www.crosscountrywireless.net
Yahoo group: http://uk.groups.yahoo.com/group/cross_country_wireless/

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