After building a Z11 tuner and beeing very pleased with it, I looked
forward for a smaller one, for portable use.
Everybody knows, that the Z11 is a optimal supplement for the FT-817,
so why not using a similar tuning cuircuit as a manual tuner.
I did built it from scratch into a very small box (even smaller than
my homebrew ZM-2) and fasten it with a rubber band together with my
ultimate cw accessorie box (external keyer and dc distribution.
Tuning is acomplished first by maximum receiver noice and after
keying the TX to lowest SWR on the bargraph. It?s done really
quick and you are able to record the switch and condenser settings
for further tune up.
This tuner was able to perfectly tune a 20m random wire (from the
window of my shack down to the garden) on all band?s from 160m to
10m. I got even a match on 50 MHz! You see, 20m is a good length
always!
Look to the file section at "FT-817 Accessories"
for further information.
73, Harry
