I see your points. I'm just a little more conservative (paranoid) than
others.
I like a little headroom. I've got a pair of RS-35M's that are 24 and 20
years old. I can't kill em.
On 4/17/2016 6:47 PM, Ron D'Eau Claire wrote:
A quality 20A peak supply is fine. For over a decade I've run a K3 and then a
K3S and, when those aren't on a KX3/KXPA100 off of an Astron 20 without an
issue as long as the finals see a decent SWR (current demand skyrockets as the
SWR goes up). At low SWR's none of the rigs exceeds 18 to 19 amps, max.
The 20 means 20A peak current - ICS rated (5 min on 5 min off). That Astron is rated at
16A continuous but Amateur stuff is almost never "continuous".
Consider that 20A at 13.8VDC is 276 watts. As long as the rig is not way below
40% overall efficiency there will be no problem.
That's using a quality linear supply. I'm not so casual about a switcher or a
cheaper supply.
I use the Elecraft supplied power cables on everything.
73, Ron AC7AC
-----Original Message-----
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Kevin
Stover
Sent: Sunday, April 17, 2016 4:19 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KXPA Power Output
WRU nailed it. I missed it in the original posting.
You're losing 1.7 volts in 8ft of that "#14 wire". That's about as bad as it
gets.
Why didn't you use the power cable supplied with the amp? I believe it's #12.
What kind of power supply is running the amp? It has to be 25 amps peak
*minimum*, I'd say continuous. What else is being run on the same power supply?
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to kevin.sto...@mediacombb.net
--
R. Kevin Stover
AC0H
ARRL
FISTS #11993
SKCC #215
NAQCC #3441
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com
