[GreenKeys] Navy radio question...

[roy.morgan at nist.gov]

Quoting Andreas Müller <dd1lm at t-online.de>:

>... power supplies for the URT-23... PP-3916 and is made for 440V, 60Hz, 3P....
There is another one which has double size and as far as I know is made for 1P
power.

 Andreas,

You've gotten good information about the radio sets, and I'm not at all familiar
with them, but I may be able to contribute just a little bit on workarounds for
three phase power supplies:

There are two or three ways to run get three phase power for a supply that is
built for that. One way is to be in a place that is supplied by the power
comany with the right kind of power. That's not likely.

A second way is to find a rotary inverter - this is basically a motor that runs
a three phase generator. These things are heavy, noisy, and can be expensive. 
I know one fellow who has one (for his SRT-15) and I can steer you to him for
more particulars.

A third way is to make a sort of converter out of a three phase motor.  This
involves starter circuits, motor start capacitors, and all sorts of control and
power wiring with attention to the national electric code.  It turns out that
folks who have three phase industrial motot-driven equipment such as lathes,
band saws and the like, but who don't have three phase power from the electric
company have dealt with this situation extensively.  There are websites,
suppliers, lore, and engineering available on the web.  These things also are
heavy, noisy, and can be expensive.  A fellow where I work has been building
such a system, and I can get more information for you if you are interested.

A fourth way is, as you might guess, solid state power inverters. It appears
that one company has a patent on this technology and so has had no competition
in supplying systems to do the job.  Now, it appears, a contender has developed
a second way to implement the thing, and is expected to enter the market in the
future.  These things are new, efficient, and likely very expensive.

Good luck in fnding the right solution so you can run your transmitter.

Finding the correct connectors may be quite a bit easier: William Perry is your
source:

William Perry Co 
702 (Rear) Beechwood Rd
Louisville, KY, 40207 
(502) 893-8724, 
FAX (502) 893-9220 
Connectors: Amphenol, Bendix, Cannon, Burndy, Cinch and Winchester (to name a
few)

A URL I found for a web page is:
http://www.williamperrycompany.com/
but that is not working just now.

Email reported 7/03:  wmperry at covad.net

Roy Morgan
7130 Panorama Dr.
Derwood MD 20855