WSPR - Weak Signal Propagation Reporter Network

“The Weak Signal Propagation Reporter Network is a group of amateur radio operators using K1JT’s MEPT_JT digital mode to probe radio frequency propagation conditions using very low power (QRP/QRPp) transmissions.”


Since 8th July 2013 and 17th September 2013 we have run WSPR beacons on 30m and 10m respectively.  As of 5th September 2020 these beacons are using the QRP-Labs Ultimate 3 transmitter and run QRSS and WSPR in the same ten minute frame.  G0PKT transmits a two minute WSPR signal starting at 08, 18, 28, 38, 48 and 58 minutes past the hour followed by eight minutes of QRSS.


The output power on 30m is around 250mW to a quarter wave vertical on the top of the Martello Tower.


On the 17th September 2013, we added a 10m WSPR transmitter running 250mW output into a 5/8 vertical mounted on top of the tower, roughly 40’ AGL.


We hope that by providing an ‘always there’ signal that we will be useful for propagation testing for stations around the world.

Martello Tower Group, 2009-2021