There were a few articles in QST on adding 6 meters to and converting to just 6
on the SB200. Some years back. I think in the 80's?
I have also seen conversions done on the FL2100B where the original tank
components are removed and new tune capacitors and new tank coil were installed.
Don't know how well they worked.
Steve Katz wrote:
> Ron, I don't think anyone could make this work. Parallel 572B's don't lend
> themselves to 50 MHz operation. I modeled the SB-200 (similar circuit) for
> 50 MHz and determined the plate tank C would have to be below zero to
> achieve a usable Q. I believe the 572B is rated for "full power" to 30 MHz,
> and deteriorates rapidly above that frequency.
> With an FL2100B on hand, what I'd do to get on six is trade that amp for
> something with a 3-500Z in it, and go from there. The 3-500Z, and the
> 4-400A, work very well on six.
> "If everything seems under control, you're just not going fast enough." -
> Mario Andretti
> > -----Original Message-----
> > From: Major Ron [SMTP:email@example.com]
> > Sent: Tuesday, August 27, 2002 12:16 PM
> > To: firstname.lastname@example.org
> > Subject: [Amps] Yaesu FL2100B to 6 Meters?
> > Has anyone done a conversion of this amp to 6 meters? I would really like
> > to
> > correspond with someone who has actually converted one.
> > Ron, KA9ALC
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