If ameritron does right or wrong is another story, but what I can say
for sure is that without anode suppressor a 3CX1500 in GG is quite
stable and much less prone to VHF parasitic than other common tubes
with conventional VHF suppressors.
The anode suppressors in the form of coil and resistors are critical
devices whose effectiveness is very much questionable.
The true reason such suppressors are installed is to satisfy and agree
conventional designs and expecially to let people to find out what's
typically placed between the plate choke and tubes' anode.
Most of those suppressors are actually not working at all, and finally
they aren't anything better than no suppressors at all.
Last but not least, when suppressors resistors are cracked (typical)
oscillation risks are increased.
73,
Mauri I4JMY
> ---------- Initial message -----------
>
> From : owner-amps@contesting.com
> To : <N6BUU@aol.com>, <2@vc.net>, <n6er@yahoo.com>,
<amps@contesting.com>
> Cc :
> Date : Wed, 21 Jun 2000 17:28:50 -0500
> Subject : Re: [AMPS] RF filament choke for indirectly heated cathodes?
>
>
> > Ameritron does it right, but alas, no anode parasitic suppressor!
> >
> > (((73)))
> > Phil, K5PC >>
> > IT SEEMS TO ME THAT MAKES EVEN LESS SENCE! HANK
>
> The designer of the Ameritron AL-1500 has stated here on this
reflector
> that it is possible through proper lay-out and component selection to
> preclude the need for anode parasitic suppression on 8877 amps.
>
> Please turn off your caps lock, Hank..it is perceived as shouting on
the
> reflector. I don't think you are mad at me, are you???
>
> (((73)))
> Phil, K5PC
>
>
>
>
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