[Amps] 1:9 un-un for grid driven tetrode

[Peter Voelpel]

The ham might have been asked by a broadcaster to build such amp.

I was asked as well about a 30-50KW amp.
Helped already in the past with the construction of the 10KW version (2x
3CX3000A7).

https://www.channel292.de/

73
Peter

-----Original Message-----
From: Rob Atkinson [mailto:ranchorobbo at gmail.com] 

> Tetrodes requiring a few hundred volts of drive are for instance 4CX10000
or
> 4CX15000 and similar
>

Why would a ham want a tube with 15 KW anode dissipation?

I was perhaps too dismissive of an unun attempt; maybe it works in
some cases, but a typical LC input network can be made to work across
HF without much retuning provided the driver can tolerate some vswr
excursion.