G4NSJ – WSPR 200mW on 21MHz amateur band

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The amazing power of low power!

This is unbelievable! Transmitting 200mW on 15 metres, 21.0946MHz, with a mobile whip standing on the floor, taped to the table. No ground plane and surrounded by metal objects! If you don’t have the space for a decent outside antenna, this WSPR (weak signal propagation reporter) result is encouraging. I also use JS8 Call, another low power digital program for keyboard to keyboard chat.

1/9/25. 1100 hours:

Heard in Frankfurt, Germany!

15 metres with a mobile whip

The mobile whip antenna standing on the floor, taped to the table. I didn’t think I’d be heard anywhere.

15m-mobile-whip

Main WSPR page.

More information coming soon…