[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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