[Elecraft] New 30A power supply on Elecraft order form

Edward R Cole kl7uw at acsalaska.net
Wed Apr 15 10:48:59 EDT 2015


This switching supply may solve a power issue for me without being 
huge and heavy.

My concern would be RFI at 144-MHz and higher as my application is 
supplying two 60w linear amplifiers (class-A) that operate on 3.4 
GHz.  Each needs 20A continuous supply, so two PS will be needed.  I 
don't care about fan noise as they will be installed on my dish 
100-feet from the shack.  I plan to switch the dc on/off to the 
amplifiers in Tx/Rx to minimize heat dissipation (240w each).  Amps 
will have super heat-sinks with fans running continuous.  I probably 
will run ac to the PS to have short dc lines (maybe I will run RG-59 
to shield the dc).

Do the back connectors thread all the way off for installing ring 
connectors?  Some banana type do not forcing the use of a 1/4-inch 
spade vs ring.  I would likely replace the banana with 1/4-inch nuts, 
locks, flat washers.

I read some of the eHam reviews and there were several about HF RFI 
but most seem to note nothing at VHF.  I will be running 144-MHz via 
coax to the dish where the transverter will be located.

One question is how low voltage can be adjusted.  Amps are designed 
for 12.0 volts.

This looks like a nice package for portable use with K3/100.

73, Ed - KL7UW
http://www.kl7uw.com
     "Kits made by KL7UW"
Dubus Mag business:
     dubususa at gmail.com



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