[Boatanchors] Metalized Polyethylene Film

[Rob Atkinson]

No, those are not RF capacitors.  Depending on space you need a class
2 ceramic dielectric cap, or vacuum, air, or mica with a 1 Mc current
rating.   If space is limited, I'd go with HEC doorknobs which you can
get from RF Parts among other vendors.  You can use a transmitting
mica cap, but my experience with old micas has been mixed.  Half the
time they fail on me within a year.

73
Rob
K5UJ

On Fri, Jan 2, 2015 at 9:13 AM, David C. Hallam <dhallam at knology.net> wrote:
> Are high voltage metalized polyethylene film a substitute for disk ceramic
> capacitors in the output network of a Invader 2000 (pair of 4-400A)?
> Johnson call for 2500V mica.  I haven't looked through my box full of old
> mica yet to see if I have any of the correct values.  Is there a source for
> HV mica?
>
> David
> KW4DH
>
> --
> There are two possible outcomes: if the result confirms the hypothesis, then
> you've made a measurement.
> If the result is contrary to the hypothesis, then you've made a discovery.
> Enrico Fermi
>
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