[Amps] 4CX350A for VHF?

[Michael J. Tubby B.Sc. (Hons) G8TIC]

>
> Greetings all,
>
> I was just given a shiny new pair of 4CX350As.  I thought of trying to
make a little desktop amp for 2M out of them but a quick look at Eimac's web
page at the specs make me wonder if this this might be a bad idea.  Further,
web searches produce a mixed bag of success/failure stories.
>
> Anyone on this reflector ever use these on 2M?
>
> Many thanks!
>
> --
> Randall D. DuCharme (Radio AD5GB)
>


Randall,

There's nothing wrong with 4CX350A tubes on 144... they go great as long
as you plan to use them in AB1/AB2 mode only and not Class-C (ever!).

The W1SL design works well and has been repeated many times with
4CX250B, 4CX250R and 4CX350A - when I had mine I used it with
4CX250BM and 4CX350A tubes just fine...

Do look after them with an appropriate screen/grid control supply board
arrangement like The Tetrode Boards (by Ian G3SEK).

I'm sure that there are others on the list that will coment...

Mike G8TIC/M0VHF