[AMPS] SB1000 parasite question for Tom and Rich+

[measures]

>In a message dated 08/03/2000 03:36:33 PM Pacific Daylight Time, 2@vc.net 
>writes:
>
><<  The fix that seems to work is:   reduce VHF 
> amplification.   >>
>Rich it seems to me that one way to reduce vhf gain would be not to use 
>tubes 
>( very expensive ones) that have max. ratings to 500 mhz  on frequencies of 
>30 mhz or below. if it will amplify at 200 mhz it should also 
>oscillate.....yes??   HANK
>
True enough, Hank.  The 3-500Z apparently oscillates c. 150MHz in the 
SB-1000, so tube choice is less limited than one might think.  .  .  
According to unsubstantiated rumour, the 8877 can oscillate from 100MHz 
to over 500MHz.  

cheers















zZZ

-  Rich..., 805.386.3734, www.vcnet.com/measures.  
end


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