[Elecraft] KPA500 Inhibit Line

[Jim Brown]

On Fri,3/20/2015 6:14 AM, j-meister at comcast.net wrote:
> I realize that one normally interrupts the amp via the key line, but it seems a little more straightforward
> in my particular case to do it via the inhibit line.

I think you're doing it the hard way, Jim. The KPA500 senses RF very 
quickly, so you don't need to feed it band data. A dit or a tap on the 
mic is enough. I would do only whatever switching you need to protect 
the tuner. If the tuner has a "loop-through" interrupt relay for the amp 
key line, I would use that. If it doesn't, go ahead and use the inhibit 
on the KPA.

Also, the KPA500 drives to full power with about 30W, so that should be 
your usual power out setting for the FT3000, except on 30M, where 12W is 
about right. Most auto tuners are happy with those drive levels.

73, Jim K9YC