[Milsurplus] [MRCA] 24 volt 40 amp switchers

[Michael St. Angelo]

Ray,

 

I may be interested in the 24 volt linear supplies when they are available.

 

Are any of your stations preparing for the new ATSC 3.0 standard?

 

https://www.digitaltrends.com/home-theater/atsc-3-0-ota-broadcast-standard-4
k-dolby-atmos/

 

Mike N2MS

 

From: mrca-bounces at mailman.qth.net [mailto:mrca-bounces at mailman.qth.net] On
Behalf Of Ray Fantini
Sent: Sunday, January 27, 2019 1:18 PM
To: Military Surplus Mail List; Military Surplus Mail List;
mrca at mailman.qth.net
Subject: [MRCA] 24 volt 40 amp switchers

 

I have a bunch of MGV PH1003-2440/RS 24 volt 40 Amp switching supplies from
a analog television transmitter that I am junking. They are adjustable from
24 to 31 volts and were designed for continues operation in television
service.

The bad news is that they were designed for three phase 340 to 460 Volts AC
input. Have not tried it yet but wanted to see if they will work from signal
phase 408 being modern switching supplies have no transformers or anything
like that on the input side. They just take the incoming lines and run them
to a huge bridge rectifier and feed that to the switching circuit. I did try
one on 208 but it did not start up.

If anyone wants one to play with you can have one for $20 each plus
shipping. 

Expect to have a bunch of linear regulated 24 volt supplies from a from a
Comark transmitter as soon as I get permission to star junking that, you may
be unaware of it but the television industry is going thru changes unlike
anything in the past where an entire fleet of analog and high channel
digital transmitters are all being junked. At one site I work at we have the
remains of the analog 60 kW transmitter all over the parking lot at another
the solution was to disassemble it in place and get rid of it that way. 

 

Ray F/KA3EKH

 

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