[Amps] Tuned Input

[Davis_R]

Hmmm, 'minimum is under 1.2 to 1' ? that makes me wonder --

1.2 to 1 seems pretty tight, what would the VSWR bandwidth be?

Makes me ask a question -- I have an FL-2100B, I bought it used and it seems
to work FB, but I checked the input coil alignment and found one band (20 m
if memory serves me correctly) that I could not bring down low enough to
really make me happy. I think it was 2 - 3 to 1 at best.  (I don't think any
were as low as 1.2 to 1). What do I look at to improve this?  Is it likely
to be the adjustable inductor? Or would it be easier to replace one or both
or the tuned input capacitors?

Rick, WD8JJA

----- Original Message -----
From: "rlm" <2 at vc.net>
To: "Ed" <edw3nr at nexband.com>; " AMPS" <amps at contesting.com>
Sent: Sunday, March 09, 2003 7:00 PM
Subject: Re: [Amps] Tuned Input


>
>
> >I want to make sure I am right here. Tune the input for best SWR
>
> **  Yes, provided the minimum is under 1.2 to 1.  If it's not, the Q of
> the tuned input needs to be pumped up,
>
> >and maximum
> >Grid current or ????????? ...........73
> >
> **  Tune for max RF out with whatever drive level produces the rated max
> anode current.  Max out always results in a reasonable amount of
> grid-current because if too many electrons are diverted to the grid,
> fewer electrons arrive at the anode and output drops.
>
> cheers, Ed
>
> -  R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K,
> www.vcnet.com/measures.
> end
>
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