[Elecraft] Fwd: KX3 Relay Control For Desktop Amplifiers

[Jimk8mr at aol.com]

I blew the switching FET with about 50 ma of current (12 volts) from a  
DownEast Microwave transverter. Elecraft says it should have handled it, but  
anyway, FWIW.
 
The FET has been replaced, and an intermediate switching transistor  
installed in the switchbox for the several transverters. Now switching 1 or 2  ma, 
hope that holds!
 
 
73  -  Jim   K8MR
 
 
  
____________________________________
 From: robertwschumacher at yahoo.com
To: elecraft at mailman.qth.net
Sent:  3/12/2013 12:07:26 P.M. Eastern Daylight Time
Subj: [Elecraft] KX3 Relay  Control For Desktop Amplifiers


Most common desktop amps have a relay circuit that requires  a transceiver 
to short 12 VDC at 100 ma to key the amplifier on.
In the KX3  specs, the maximum amp relay current is stated to be 100 ma. 
Has anyone keyed  a desktop amp directly with a KX3 or is it recommended to 
use an intermediate  external relay  circuit?

Thanks,

W9DBR