I built around a single gs-35b and so far all I see is a very stable tube.It
takes a bit more drive than a 8877 on hf but seems to be very durable.
I did take the time to condition the tube and have not yet had any
flash-over during operation. I`m in the process now of adding a second tube
to this deck.
I use anti-parasitic devices in all my amps,In my 4-1000`s (2 tubes)
supression in the cathode side works better (My own opinion) especially at
the higher pl. voltages. I really believe supressors to be cheap insurance
for any hf design.
73,Jim.
----- Original Message -----
From: Steve Thompson <g8gsq@qsl.net>
To: <amps@contesting.com>
Sent: Wednesday, November 06, 2002 11:47 PM
Subject: Re: [Amps] pandoras parasites
>
> ----- Original Message -----
> From: John T. M. Lyles <jtml@lanl.gov>
> To: <amps@contesting.com>
> Sent: 06 November 2002 23:38
> Subject: [Amps] pandoras parasites
>
>
> > Yes I opened a box when I said the 8877 amplifier by RF Plasma Prod
> > didn't use anode parasitic suppressors. I used the same unit, and
> > modified it down to 5 MHz from 13.56, and didn't add them either. It
> > didn't need them before and doesn't now. The 3XC1500A7/8877 is a very
> > short, coaxial triode, excellent construction as far as stray lead
> > inductance goes.
>
> Does anyone have experience with stability of GS35b on hf? It's got useful
> gain to around 1GHz but being a planar triode, it should be better still
on
> grid inductance.
>
> Steve
>
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