Re: switching a heath amp

Posted by Dave Hachadorian on Mar 15, 2012; 5:47pm
URL: http://elecraft.85.s1.nabble.com/switching-a-heath-amp-tp7376348p7376470.html

I used the K3 to switch my SB-220 backup amp (+130 VDC) a couple
months ago.  It worked fine through an entire contest.  The K3
spec is +200 VDC at 5 amps. I did put a reverse diode across the
relay line to prevent the possibility of negative inductive
kickback.  Actually, I put the diode right at the K3 via an RCA
wye with the diode soldered across one leg of the wye.  It was an
emergency deal, but it worked fb.

Dave Hachadorian, K6LL
Yuma, Arizona


-----Original Message-----
From: [hidden email]
Sent: Thursday, March 15, 2012 10:12 AM
To: [hidden email]
Subject: [Elecraft] switching a heath amp

Gang

the heath series of amps use bial voltage to switch the thing
from T/R
and That amounts to 130 +- volts
would the K3 be Ok switching this or should I look to add an
additional
relay
and switch that

Bob K3DJC
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list:
http://www.qsl.net/donate.html 

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html