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Old 19th Sep 2020, 9:36 pm   #18
Joe_Lorenz
Hexode
 
Join Date: Dec 2019
Location: Hohenroda, Eastern Hesse, Germany
Posts: 453
Default Re: PX4 substitutions

Hello,

my favourite substitute would be the AL 4 valve in triode hookup. It has Uf=4 V, all you need to make is a base adaptor. AL4 is easily obtained via ebay

Regards, Joe
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