Im using CD .01 6KV that I got off an Ebay surplus components seller.
Mylar type and USA made, about $1 each in 20 quantity.
It has been my experience that 160M performance improves with the .01
which I parallel with the existing .001
Carl
KM1H
----- Original Message -----
From: "Steve Flood" <kk7uv@bresnan.net>
To: <amps@contesting.com>; <rfamplifiers@yahoogroups.com>
Sent: Sunday, January 11, 2009 8:38 PM
Subject: [Amps] plate bypass caps
>I have an Ameritron plate choke mounted in my amp project. It is
>225uH. With 2700 plate volts, this is 2544 ohms at 1.8 MHz and thus
>1.06 amps. I am now assuming the plate bypass capacitor at the base of
>the choke must be very low reactance on 1.8 Mhz which tells me .01 or
>.02 uF at maybe 5kv rating. Am I thinking about this correctly? If
>so, such capacitors seem quite rare - the usual internet sources only
>carry .001 or .002 which would seem ineffective at bypassing at 1.8
>MHz. Yet, there are many 160m amp designs that use .001 for bypass.
>Perhaps they are using much much larger plate chokes?
>
> Steve, KK7UV
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