IF you have a tuner rated to carry 1000 watts,
and IF you connect it to a properly sized conductor, non resonant antenna,
such as a center fed doublet, and IF you do not have any loose connections;
and the antenna is at same height as the resonant doublet it replaces, and
if the tuner antenna system is properly tuned to match, and the surroundings
and earth conditions are not different from the use of the resonant doublet,
You WILL NOT have any heating effects in the antenna itself, nor significant
difference in efficiency. You may have a small loss in the tuner, but if it
is sized for 1000 watts that should not heat up the tuner. Heat indicates
you were not tuned to a proper point on the LC combination or you had other
mismatches in the antenna system.
This is called a conjugate match, and is covered in good handbooks and
Reflections II by Walter Maxwell, which should be must reading for all hams.
MANY ham commercial tuners are NOT sized to carry 1000 watts SSB/CW.
Tuners with fewer LC parts, such as the kilowatt Ten Tec L Network will have
lower losses, since there is one less inductor than common ham T Tuners. Or
try one of the old Johnson Matchboxes, whose power ratings were based on 100
per cent modulation of an AM carrier. They do not heat up, when the 1000
watt model is used with today's modes and duty cycles.
-Stuart
K5KVH
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