My old TS-930S/AT internal tuner would not be in the circuit on receive and
I actually found that to be an advantage as receivers are a lot more
tolerant of a typical antenna mismatch, much more than the mismatch from a
mistuned tuner, in fact. However, otherwise that was a pretty poor tuner. It
had motor driven components that were sloooow and noisy, and no memories
whatsoever. Now I have an external LDG tuner that uses relays, finds out all
but instantly if one of the last 200 or so "matches" is good for the current
situation, and if not does the relay chatter thing for a few seconds to get
a good match. The overall range and speed is better than my old 930 and also
a vast improvement over the manually tuned MFJ that I still have around here
somewhere. However, that LDG sometimes does report a good match and not pass
much power for some reason, so you do need to keep an eye on it. Forcing it
to seek a new match usually does the trick.
=Vic=
WA4THR
> To: "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>
> Subject: Re: [TenTec] Orion Tuner - Answers from LDG
> From: "NJ0IP" <Rick@DJ0IP.de>
> Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
> Date: Thu, 24 Feb 2005 07:46:50 -0800
> List-post: <mailto:tentec@contesting.com>
>
> It's not always an advantage to have the tuner inline for RX.
>
> Example: your antenna is resonant, but your amplifier has a poor SWR
input.
> You need the tuner for TX but when in RX, it actually mismatches the
> impedance.
>
> The best case would be the ability to select if the tuner is on for RX,
TX,
> or both. This will probably never happen but it would be nice.
>
> 73
> Rick
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