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Date: Fri, 16 Nov 2012 20:48:13 +0200
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From: phl@netikka.fi
To: rsgb_lf_group@blacksheep.org
References: <50A559AA.40207@iup.uni-heidelberg.de>
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Content preview: Very nice indeed! I would still also change the TX LPF that
is switched into use when the rig is on 475kHz with the usual 6800pF/15uH
components used in many designs. T94-2 or T106-2 cores should be fine for
the coils at that power level. After that I would also make sure the output
transformer does not run too hot at the intended max. output power level.
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Subject: Re: LF: How to become QRV on 630m
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Very nice indeed!
I would still also change the TX LPF that is switched into use when
the rig is on 475kHz with the usual 6800pF/15uH components used in
many designs. T94-2 or T106-2 cores should be fine for the coils at
that power level. After that I would also make sure the output
transformer does not run too hot at the intended max. output power
level.
This mod suggestion came just in time, I think we have a contender to
apply it on. Will report how it turned out in case we get a go at it.
BR
Paul-Henrik, OH1LSQ
Quoting Stefan Sch=E4fer <Stefan.Schaefer@iup.uni-heidelberg.de>:
> MF,
>
> Just found this nice to read article in the web:
> http://www.ov-erding.de/630m_Band.pdf
> German language.
> The OM modified an old IC735 to produce 50W RF power on 630m!
> He reports about a QSO to DF0WD :-)
>
> 73, Stefan/DK7FC