[Amps] (no subject)

[Thomas Hix]

>Hi all,
>
>Is there some reason why there seems to be very few HF amps built around
>the 4cx250b's? They seem to be cheep and very plentiful.
>
>I am thinking of building an HF amp using 3 or 4 4cx250b's. Is there
>
>anything wrong with doing this?
>
>
>Cheers
>
>Jerry

============================================================

Hi Jerry;

Unless you already have the 4cx250b tubes, why not go with a pair of 4cx800a 
tubes. I think you can get as much or even more output from a pair of the 
4cx800a/gu74b tubes than you can out of the 4 4cx250b tubes, and with the 
4cx800a/gu74b tubes running around $190 a pair I would say it is a better 
buy.
No matter which tubes you go with, you may want to check out the G3SEK 
Tetrode board kits on my website www.tomstubes.com  It is a great kit for 
anyone who builds an amp that runs tetrodes of any size......I also have the 
same type of kit for triodes.

73
Tom....W4TH


Tom's Tubes: Specializing in Amateur Radio Amplifier Tubes/Sockets & G3SEK 
Tetrode/Triode Boards & Kits http://www.tomstubes.com