[ARC5] Surplus Disposal

Kenneth G. Gordon kgordon2006 at frontier.com
Tue Jan 10 12:59:09 EST 2012


On 10 Jan 2012 at 0:38, Fuqua, Bill L wrote:

> P&H and Central Electronics both used ARC5 transmitters and parts. P&H
> had a linear amplifier LA-400 which had 4 modified 1625's and
> capacitor and roller inductor from ARC 5 TX and Central Electronics
> used modified ARC 5 transmitters for VFOs.
>   I think P&H ran out of cheap roller inductors and went to a band
>   switch
> for the LA-400C. Oh yes, the LA400 was a perfect match for the 
> Central Electronics 20A. The 20A would drive the LA400 to output and
> both the CE20A and the LA400 cabinets matched the Collins 75A3.
>   The 3 together would perform about like a modern day transceiver but
> with a bit over twice the power output and much larger and heaver.
> Also, many more knobs and no stupid computer like menus.
>   Now, thinking about it, I would not mind having a LA-400. 

Bill:

The P&H LA-400 was a commercial version of the amp that was first 
published in an article in QST for June 1955, beginning on page 22. 
It is entitled, "A 200-watt Grounded-grid Linear Amplifier".

There was a short follow-up "Stray" on how to modify the 1625s and 
which ones were modifiable in Sept 1955 QST on page, 10.

They are pretty easy to build.

As I said in another post before I read yours, I have the CE-20A and 
the "458" VFO which I have used in the past. I think **I** need an LA-
400 too. ;-)

Ken W7EKB


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