[Amps] modern 811 designs?

[nagato at arnet.com.ar (GGLL)]

Dan Evans escribi?:

> 
> Another suggested using GI7B's instead.  I've been
> considering this, but I was hoping to use some old
> junk box parts I already have to start with.

        As I've seen a few minutes ago, this GI7B is a very different tube than
811, and also, it's rated upto 2.7 GHz!.
I don't even know its cost, but, could it be convenient for an HF amp??.

Best regards
Guillermo - LU8EYW.