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 21mhz. Show all posts

Showing posts with label 21mhz. Show all posts

30 Jul 2021

21MHz (15m) QRP CW - my homebrew "Pipit"

Many years ago I designed and made this QRP (800mW) CW rig of 15m. It worked remarkably well and worked some impressive DX. For several mo...

7 Sept 2011

Sputnik valve TX tests

This afternoon G6ALB and I got together to build a 2 valve 21MHz transmitter using a couple of Russian valves of the same types used in the...

10 Feb 2010

QRP DXing on 15m CW

With the improved sunspot count yesterday and today 15m has opened up to the Caribbean and to the USA this afternoon. First QSO was 9Y4VU a...

View web version

About Me

Roger G3XBM: Burwell, Cambridge, United Kingdom

View my complete profile

Powered by Blogger.