[Amps] GS-35B Input

[Gary Schafer]

Mike,

Leave the CLC (pi network) input circuit in there. A broadband input will
not provide the flywheel effect that you need. Neither will an LCL do the
job as there needs to be capacitance from cathode to ground that you only
get with the CLC type or a parallel tuned input circuit.

73
Gary  K4FMX

> -----Original Message-----
> From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com]
> On Behalf Of MIKE DURKIN
> Sent: Thursday, February 18, 2010 1:34 AM
> To: amps fourm
> Subject: Re: [Amps] GS-35B Input
> 
> 
> Ok that didnt work so great .. but using a power combiner/splitter with
> 1100pF in the same setup did show a workable bandwidth and didnt go
> above a 1.5SWR .... looks like i might just use this configuration and
> eventually pull the C L C networks for the input of my amp ....
> 
> Mike
> KC7NOA
> 
> > From: patriot121 at msn.com
> > To: amps at contesting.com
> > Date: Wed, 17 Feb 2010 21:48:53 -0800
> > Subject: Re: [Amps] GS-35B Input
> >
> >
> > I was thinking of using one of those bi-ocular transformers that's
> found in many solid state transceivers .... but changed to 1:1 and
> basically an C L to ground and the other half of the 1:1 would be L C
> Into the GS-35B .... guess ill just try it with a dummy load and my
> MFJ259b ..... at least ill know the frequency range of the 1:1
> >
> > Mike
> > KC7NOA
> >
> > > Date: Wed, 17 Feb 2010 20:19:16 -0600
> > > From:
> > > CC: amps at contesting.com
> > > Subject: Re: [Amps] GS-35B Input
> > >
> > > I think large variations in drive impedence through the rf cycle are
> > > somewhat smoothed out by a low to medium Q input..   BTW, L-C-L (
> > > lowpass ) might be better.
> > >
> > > Don WA4NPL
> > >
> > >
> > >
> > >
> > >
> > >
> > > Quoting "MIKE DURKIN" <patriot121 at msn.com>:
> > >
> > > >
> > > > Just a thought/wondering .. why is it that a broad-band 1:1
> torroid
> > > > un-unun not used for the input of a single GS-35b instead of
> several
> > > > C.L.C. networks ?? Is there not enough fly-wheel effect to keep a
> > > > good linearity??
> > > >
> > > >
> > > >
> > > > Mike
> > > >
> > > > KC7NOA
> > > >
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