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 k4twj. Show all posts
Showing posts with label k4twj. Show all posts
10 Dec 2025

QRP Fun

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This video is 7 years old, but it might inspire you. Basically it is a 1 transistor transceiver by Dave Ingram K4TWJ from the book "In...
12 May 2010

30m QRP transceiver from GJ7RWT

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Andy GJ7RWT has sent me his schematic for a 30m QRP CW transceiver which has some similarity to the XBM80-2 and the transceiver from K4TWJ....
1 comment:
20 Jan 2010

K4TWJ - silent key

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Dave Ingram, K4TWJ died this morning having lost his battle to overcome a massive heart attack on New Year's Eve. He wrote a regular co...
1 comment:
16 Jan 2010

K4TWJ (the "One Transistor Marvel" man)

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Yesterday I heard that Dave K4TWJ is in hospital having had a massive heart attack on New Year's Eve. His XYL Sandy, WB4OEE, reports th...
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Roger G3XBM
Burwell, Cambridge, United Kingdom
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