[Amps] None

[John T. M. Lyles]

I hope that the black plastic doesn't contain much carbon, Bob. That 
would make fireworks in a high field. Have you stuck it into a 
microwave oven for 5 minutes to see if it warms from the dielectric 
heating alone? A microwave oven is quite low E field for testing, 
compared to the plate swing across a 3CX3000 sized tube at, say 28.5 
MHz.



>From: "Bob Maser" <bmaser at tampabay.rr.com>
>To: "AMPS" <amps at contesting.com>
>Subject: [Amps] 3CX3000 Chimneys
>
>I may have found the solution to coming up with a chimney for the 3CX3000.
>It is a recessed ceiling lighting fixture made out of a thermoset type black
>plastic.  I found them here in the Tampa area.  Since it is thermoset
>material, it burns rather than melts and since lighting fixtures get quite
>hot, I would think it would survive as a chimney. The thing measures 4-1/16"
>ID at the neck, 6" at the base and is 3" high.  I had to grind out the top
>to 4-1/8" with a Dremel grinder and it fits right over the fin diameter of
>the 3CX3000.  The 3" height is JUST high enough to reach the bottom of the
>fins.  Anybody interested, I can EMail a picture of what it looks like.  It
>even has a small lip on the lower 6" diameter to allow one to hold it down
>on the chassis with screws and tabs like is done with the 8877 chimneys.
>
>Bob W6TR