[KLQRP] Balanced tuner information

[Don Wilhelm]

Balanced tuner informationJohn,

So if the impedance is that well controlled, why not use a 4:1 balun and
tweak the input impedance up to 75 ohms with a currently available
unbalanced tuner - or just operate at a 1.5 SWR, it won't hurt most
transmitters and the power reduction should be minimal.  Loss is not
significant at SWR=1.5 unless the coax is long or the frequency is high.

73,
Don W3FPR
  -----Original Message-----
  From: klqrp-bounces at knightlites.org
[mailto:klqrp-bounces at knightlites.org]On Behalf Of John McKee
  Sent: Friday, November 03, 2006 4:59 PM
  To: klqrp at knightlites.org
  Subject: [KLQRP] Balanced tuner information


  On the other hand . . .  Since the impedance is pretty well controlled at
300 Ohms and mostly resistive, maybe I could cheat a bit and use
transformer/balun at the tuner output.  I guess you really don't get into
trouble unless there's a big reactive component to the impedance your trying
to match.  The impedance at the end of the 300 Ohm line should be mostly
resistive, if the antenna is cut correctly.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.applegate.org/pipermail/klqrp/attachments/20061103/d436e8fc/attachment.html