I forgot. If you do this mod, you do not need an antenna tuner anymore as
the tank can now make ANY reactance adaptation needed :)
Alex, N2NNU
===================================
If we can accept the notion that GUNS are
the killers and not the people, why is it that
we can not accept the idea that CARS are
the speeders and not the drivers?
Alex, trying to understand the world around.
==================================.
----- Original Message -----
From: "alex" <alex@sandlabs.com>
To: "2" <2@vc.net>; <jukka.kulha@nokia.com>; " AMPS" <amps@contesting.com>
Sent: Saturday, December 15, 2001 9:45 PM
Subject: Re: [AMPS] SB-200 & 10MHz++
>
> I have modified several amps by replacing the conventional Switch/Plate
> Cap/Inductor/Load Cap with a simple Pi filter. This gets rid of the switch
> and becomes more
> reliable. I think it should work with your SB-200 also. You need to have a
> high grade roller inductor with enough inductance for the lower band at
one
> end and capable of providing a small enough inductance for the 10m Band at
> the other end.
>
> It is true that you have to recalibrate your initial settings for the
three
> variable components, but this is done one single time :) It works quite
well
> :) You can motorize them also :) Button UP/Down :)
>
> Alex, N2NNU
> ===================================
> If we can accept the notion that GUNS are
> the killers and not the people, why is it that
> we can not accept the idea that CARS are
> the speeders and not the drivers?
>
> Alex, trying to understand the world around.
>
> ==================================.
>
> ----- Original Message -----
> From: "2" <2@vc.net>
> To: <jukka.kulha@nokia.com>; " AMPS" <amps@contesting.com>
> Sent: Thursday, December 13, 2001 8:19 AM
> Subject: Re: [AMPS] SB-200 & 10MHz
>
>
> >
> > >
> > >Hi all,
> > >
> > >Just like to know if you have done modifications for SB-200 linear to
get
> it
> > >operational on 10MHz??
> >
> > // 10MHz requires a bandswitch with an additional contact because
10MHz
> > is too far from from 7MHz or 14MHz to allow sharing bands -- such as
> > 12m/10m.
> >
> > >Any instruction available? Also interested to add
> > >1,8MHz. All hints are very welcome!
> > >
> > // 1.8MHz is difficult to add to a SB-200 because, unlike the SB-220,
> > there is not much room for the added L, Tune-C, and Load-C padders.
> >
> > cheerio, Jukka
> >
> > - R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures.
> > end
> >
> >
> > --
> > FAQ on WWW: http://www.contesting.com/FAQ/amps
> > Submissions: amps@contesting.com
> > Administrative requests: amps-REQUEST@contesting.com
> > Problems: owner-amps@contesting.com
> >
>
>
> --
> FAQ on WWW: http://www.contesting.com/FAQ/amps
> Submissions: amps@contesting.com
> Administrative requests: amps-REQUEST@contesting.com
> Problems: owner-amps@contesting.com
>
--
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