[Elecraft] ICOM Remote Antenna Tuner

[Harry Yingst]

I used to run the SGC-230 tuner at the base of my antenna.

As I recall it has a auto mode that does not require a tuning circuit






      From: John Pierce <ja-pierce at verizon.net>
 To: elecraft at mailman.qth.net 
 Sent: Saturday, April 8, 2017 5:24 PM
 Subject: [Elecraft] ICOM Remote Antenna Tuner
   
I am looking at remote antenna tuners.  I have seen several controllers for
the ICOM AH-4 tuner.  My questions are about operation with a K3s.
1.    Is there a limit to the time that 10w of RF can be sent to the AH-4
via the K3s Tune button?
2.    All circuits specify a momentary switch, but does momentary mean
0.1sec, 1.0sec or 5seconds? Does the time matter?
3.    When the complete signal returns from the AH-4 should the Tune RF or
the momentary be terminated immediately?
4.    Is there a combination of momentary or Tune RF that will damage the
AH-4?

I have an AH-4 which worked with a home built controller for some months,
and then became operationally intermittent and final fails to work at all.
That makes me gun-shy, about buying another even though the AH-4 gets
excellent reviews on eHam, almost all of which are based on an ICOM rig
control.

John, AD2F