[AMPS] runaway amp.

Ian White, G3SEK Ian White, G3SEK" <g3sek@ifwtech.com
Fri, 23 Feb 2001 00:28:24 +0000

Pete Smith wrote:
>At 11:22 AM 2/22/01 -0800, dan hearn wrote:
>>Another thought: The problem seems to be heat related. Create a source
>>of hot air which can be directed on various components while the amp is
>>creating dots from your keyer into a dummy load. 
>An easier alternative might be to provoke the amp into the beginning of the
>runaway process and then use one of the available cooling spray can
>products to cool components till you find the one that reverses the runaway.

W0YR will be off the list for a few weeks, so maybe we have to leave it
until he can make some more tests.

The real puzzle is that the RF output drifts UPwards, which is quite

73 from Ian G3SEK          Editor, 'The VHF/UHF DX Book'
                          'In Practice' columnist for RadCom (RSGB)

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