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, 17th September 2013 and 3rd June 2021 we have run WSPR beacons on 30m, 10m and 6m respectively.  As of February 2021 these beacons are using the QRP-Labs Ultimate 3S 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.

 

On 3rd June 2021, we switched on a third WSPR transmitter running 1W into a vertical dipole on 6m.

 

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, 2009-2023

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