|The G3TDZ multi-band
This is one of the QRP
rigs I made - shortly after regaining an
active interest in amateur radio in about
It is the multi-band
phasing transceiver by John Hey, G3TDZ who
published a detailed series of articles in
RadCom, the journal of the RSGB.
Running about 5W I have
made plenty of contacts, mainly on 40m,
including both North and South America,
using only a 66ft length of wire, running
through the loft and onto a tree at the
bottom of a small garden.
I also have 4m modules
but only running about 1W - not quite enough
from an indoor dipole !! but portable it
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The case was made by
Tony, G1ITS and many of the bits and pieces
came out of the junk box.
those that remember the early days of
computers the module handles came from the
plug-in boards in a DEC Lab PDP12. (It
took up a small room, used 3kW and had a
fantastic 4k of hand-wired magnetic
An excellent project,
great fun and relatively easy to build.