Roger G3XBM's (Mainly) Amateur Radio Blog

Simple QRP projects, 10m, 8m, 6m, 4m, FT8, 160m, WSPR, LF/MF, sub-9kHz, nanowaves and other random stuff, some not related to amateur radio.

Showing posts with label beacon antenna. Show all posts

Showing posts with label beacon antenna. Show all posts

5 May 2011

Ultra low voltage oscillators

Thinking a bit more about my crazy idea for a mains hum powered QPRp beacon TX, I chanced upon this page which discusses FETs running from e...

31 Jul 2010

136kHz QRP QRSS3 beacon video

This is a video showing the 2W QRP beacon for QRSS3 on 136.93kHz. Using a 20m spaced earth electrode transmit "antenna" it has be...

29 Mar 2010

A new personal WSPR DX record

This evening I put the WSPR beacon first on 20m and then 30m running 1W into the 5m long vertical matched with the Elecraft T1 auto-ATU. Fir...

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Roger G3XBM: Burwell, Cambridge, United Kingdom

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