[Amps] Is Amps still in existence?

[Ian White GM3SEK]

PA3DUV wrote:
>>any recommendations for a coil former material
>> that can withstand a bit of heat? The 80/160m tank coil in my amp gets
>> quite warm during RTTY contesting -  not hot enough to indicate a design
>> problem, but even a moderate increase in temperature makes the
>> fibreglass tubing former smell quite unpleasant.
>>
>How about Teflon Ian?
>Last week I replaced the toroid core and side insulators of my HF amp 
>(40-80-160 m tank coil) for Teflon ones. So far @ 6 kW Dauerstrich it 
>seems to keep up quite well.
>

Might well try Teflon, if I can find some tubing of the right diameter.

However, in a few months I may take the whole thing off-line and rebuild 
it as a Pi-L, which should reduce the working Q and the power 
dissipation in the individual coils.



-- 
73 from Ian GM3SEK
http://www.ifwtech.co.uk/g3sek