[Amps] Fabrication & part placement

[Alex]

...well done!
I would like only to add a small warning: there are tubes, like the 4-1000,
which don't like to operate horizontally! They even stress it quite
energetically on the data sheet.
Soooo, it's wise to check with the data sheet. These animals don't come
cheap and ending up with a thermally bent internal structure is an
inglorious way to finish it off!
Alex	4Z5KS 

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
Behalf Of gdaught6 at stanford.edu
Sent: Friday, April 18, 2008 6:54 PM
To: amps at contesting.com
Subject: Re: [Amps] Fabrication & part placement

Roger wrote...

> Some years ago I modified an MLA2500
> to use a single 3CX800A7, and decided there was not
> enough space to mount the tube vertically as well as
> allowing an air supply below. (Re-phrase that - if
> there is enough space, it is very tight, would require
> a sharp bend in the air input, and would need the
> original chassis to be hacked around horribly!) In the
> end I mounted the tube horizontally with the socket
> and the input circuitry in a small diecast box

...

Also, you might look at "New life for Dentron MLA 2500s" in the May, 1996
issue 
of QST for ideas.  The conversion described there is still working fine.

George T Daughters, K6GT
CU in the California QSO Party (CQP)
October 3-4, 2008



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