mc wrote:
there is comment on the
balun pages that says there is no real good balun for low power, my
question is why not, is it not the purpose to keep everything in balance
to get the best out of your antenna no matter the power. the eham site
does not offer any explanations on this but one HAM operator says DXE
balms claim to fame is high power out puts.
If the balun is inefficient, the loss will be the same in DB at QRP or
QRO. If the balun has a loss of, say 3 DB, then it will make your KW
sound like 500 watts and your 5 watts sound like 2.5.
Having said that, power loss is power converted to heat, so you might
not notice a lossy balun when operating QRP; at QRO it would heat and
possibly burn up.
Finally, a balun may be more or less effective at reducing common mode
currents (that is, converting between balanced/unbalanced), apart from
losses. And one balun may have a wider frequency range in which it is
efficient and effective than another.
So there is definitely a sense in which one balun is better than
another, even for QRP.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
_______________________________________________
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com
