[Elecraft] K Line Power Requirements

[Dick Dievendorff]

I use an Astron 70A linear supply for two K3s for SO2R and all my other 12V
station equipment. I wanted to be able to transmit concurrently on both
radios in case I decided to enter a multi-single or multi-two contest.  If I
were alone and never keyed two transmitters concurrently, a single 30- or
35A supply would fulfill all my 2 radio needs.

The KPA500 has its own internal AC (linear) power supply, it needs 20A at
120VAC, and is not connected to your station +12V power supply.  

73 de Dick, K6KR


-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Jack Regan
Sent: Friday, August 05, 2011 2:18 PM
To: Elecraft at mailman.qth.net
Subject: [Elecraft] K Line Power Requirements

The specifications according to the manuals are:

 

K3                          20.0  A (recommended) 3-4 (typical)       NOTE:
When barefoot I run 100 Watts for CW, SSB and RTTY

P3                           00 .5 A   

KPA500                 20.0  A

 

FT-7800                00.5 A    RCV
NOTE: 6M, 2M, 440. Squelched. I sometimes have this on scan when working HF.


08.5 A    XMT                                                       NOTE: I
do not think I have ever transmitted on both at the same time.

 

Do I really need a 49.5 amp continuous output PS?

I have an ASTRON RS-70M that has been running for 10 years with no problems.
I was hoping to get a smaller, lighter supply to help simplify my setup.
This is one of the reasons I am thinking of the KPA500, in spite of its high
price.

 

One alternative I am considering is the MFJ-4245M.

 

Any advice and/or suggestions would be appreciated!

 

Jack AE6GC

 

 

 

 

 

 

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