[Elecraft] New List Member with T1 Questions

Ron D'Eau Claire ron at cobi.biz
Sat Nov 10 13:50:40 EST 2007


Sri for the blank message in this thread. Phone rang and I was distracted.
Toby and Robert have reiterated what I wrote anyway! A couple of other
points based on experience with my T1.

The T1, like all Elecraft tuners, uses a highly-efficient L-network matching
system. You'll find that it handles a very wide range of impedances. 

It has nothing to do with the tuner, but those antennas (1/4 wave wires and
short loaded vertical "super antenna") have low radiation resistances -
especially that "super antenna"! That means your performance is heavily
dependent upon the quality of the RF ground you provide. While the T1 will
probably give you a 1:1 match with little or no ground, the system will
radiate much, much better with at least a rudimentary 1/4 wave long
"counterpoise" wire connected to the T1's ground lug. You'll need one for
each band for best performance. Use insulated wire and keep the far end "in
the clear" as it will be "hot" with RF. If outdoors, it's smart to string
the "counterpoise" wires above head height to avoid the earth and
tripping/strangling folks <G>. Indoors you can put it on the floor, run it
around baseboards, etc. 

Ron AC7AC





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