> From: w8jitom@postoffice.worldnet.att.net
> To: amps@contresting.com
To: <amps@contesting.com>
> Date: Mon, 1 Sep 97 15:02:40 +0000
> Subject: Re: [AMPS] Parasitic suppressors
> Priority: normal
> > From: km1h@juno.com (km1h @ juno.com)
> > Subject: Re: [AMPS] Parasitic suppressors
To: <amps@contesting.com>
> > Date: Sun, 31 Aug 97 13:53:33 +0000
>
> > The only amps I am aware of were the Heath SB-230 and the Ameritron
> > Al-1200. Not sure if the current production AL-1200 still using it.
>
> Also see my comments on the 230 problems related to tube failures.
>
> In both the 1200 and the 230, a bead was added in SERIES with the RFC
> lead to de-Q and raise the impedance of the path through the choke.
>
> In neither amp was that a "suppressor" as such.
>
> >The Heath was a disaster and blew many tubes.
>
> No grid current protection, fragile grid.
>
> 73, Tom W8JI
>
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