To keep it short, Tune for max receive signal, Virg
On Tue, 27 Feb 2007 07:13:22 +0200 "AVLEC" <av...@telkomsa.net> writes:
> Virg,
> I am well aware of what the frequencies are. How else would I be
> able to
> calculate what the THEORETICAL resonant length should be? The
> problem is
> that as soon as you install the antennae into the airframe you get
> capacitive coupling between the structure and the antennae which
> usually
> lowers the resonant freq of the antennae. The antennae should
> therefore be
> fine tuned in the position where it is going to spend the rest of
> its days.
> My question was whether the
> SWR meter that I have used on CB freq was able to do airband freq as
> I was
> always under the
> impression that it didn't care what freq passed through it. It is
> after all
> just a voltmeter. A resonant antennae would absorb maximum current,
> dropping
> the voltage to a minimum which would be measured as a low reflected
> power
> and vice versa.I would imagine that the power output of the
> transmitter
> would be the limiting factor. You could reach a situation where the
> power
> transmitted was too much for the meters level adjustment to bring
> the
> reading within range of the meter's scale.
> Regards
> Dene Collett
> KR2SRT builder
> South africa
> Whisper assembler
> See: www.whisperaircraft.com
> mailto: av...@telkomsa.net
> ----- Original Message -----
> From: "VIRGIL N SALISBURY" <virg...@juno.com>
> To: <kr...@mylist.net>
> Sent: Tuesday, February 27, 2007 5:48 AM
> Subject: Re: KR> antennae tuning
>
>
> > The CB freq is 27 Meg. Airband is108 to137 Meg.
> > A BIG difference. HF VS VHF, Tune for max signal on receive, Virg
>
>
>
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