Heavier gauge wire and a shorter run helps to reduce voltage sag.
And make sure all connections are tight
From: James Walker <jimmy.wal...@outlook.com>
To: "N2TK, Tony" <tony....@verizon.net>
Cc: "elecraft@mailman.qth.net" <elecraft@mailman.qth.net>
Sent: Saturday, January 28, 2017 3:49 PM
Subject: Re: [Elecraft] K3 - stuck at MCU LD we upgrading software
Yours is not the Astron power supply I was using. Mine was the 35A, transformer
style, not switching, with dual meters. I’m still using it for other radios
with no problem. And yes, I did check the voltage reading on the K3/100 and it
did reduce severely under any load, even QRP. That’s a strange quirk in the
equipment but I think that’s it.
Jimmy Walker
WA4ILO
Macon, GA
On Jan 28, 2017, at 2:26 PM, N2TK, Tony
<tony....@verizon.net<mailto:tony....@verizon.net>> wrote:
Hi Jimmy,
Tnx for the info. I have a 35A switcher that loafs along. As I never have both
K3's transmitting at the same time I am not taxing the supply.
W3FPR got me on the correct track.
In your case, di d you check the voltage on the K3? Maybe you had a problem
with a connection in the power supply? Down in the Caribbean periodically we
have to take apart the Astron linear power supplies and clean the contact
surface on the two bolts feeding the 12V output. They develop a little bit of
resistance that drops the voltage under a load.
______________________________________________________________
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 hlyin...@yahoo.com
______________________________________________________________
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
