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Hi All,
A suggestion: battery operated tuning device at antenna end and
"wireless" link back to shack. Wireless can operate at a
non-interfering frequncy (HF/VHF/UHF/Optical).
73
On 08/11/13 16:09, Stefan Schäfer wrote:
Hi Rik,
Am 08.11.2013 16:06, schrieb Rik Strobbe:
Hi Stefan,
remote tuning of
the loading should be done by optimizing SWR (at
the TX), not for maximum RF current.
If one keeps that in mind there is no problem.
...which is in agreement with what i said.
But once you have matched your antenna to 50 Ohm on resonance and
you
can only vary the reactive part of the antennas impedance (after
doing
QSY), then you will get the maximum antenna current at best SWR
(assuming that Rrad+Rloss is constant which is not to far from
reality).
I am not sure if I will keep the remote variometer
tuning. It needs some
extra wires to the loading coil and I am not sure how long
the small DC
motor will function properly with all the rain and frost
coming up.
Here it holds since more than 2 years for LF now..
73, Stefan
--
73 de pat g4gvw
es gd dx
qth nr Felixstowe
East Coast UK
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