[Elecraft] KPA-1500 tuner power ramp up

[k4mwb]

Dave, changed the K3 Tx Delay from normal setting of 8ms to 14ms and
K3 puts out full power as soon as amp tuner completes. I'm using a
non-resonant antenna on 60m, so just wanted to use the tuner in the
amp.Thanks for the tip.Bill K4MWB

	-----------------------------------------From: "David Hachadorian" 
To: "k4mwb", "Reflector Elecraft"
Cc: 
Sent: Saturday December 11 2021 10:29:48AM
Subject: Re: [Elecraft] KPA-1500 tuner power ramp up

 I don't know anything about the KPA-1500, but I have seen similar
power ramping if I have K3/config/TX DLY set too short for my AL-1500
amps. With that amp, I have to set TX DLY to 14 msec. What happens is
that the K3 sees a momentary high swr before the amp relay closes, and
throttles back power. Sometimes you can even see "high swr" flash on
the K3 display. The power then slowly ramps up as the K3 recovers.

 Dave Hachadorian, K6LL
 Yuma, AZ

On 12/11/2021 5:49 AM, k4mwb wrote:

 When using the tuner only (amp on standby), ATU tune works fine, but
 observing the PWR it ramps up slowly from 0 watts. For example K3 set
 to 100 watts, amp on standby, press ATU tune and it takes about 15
 seconds for the amp PWR indicator to reach 100 watts. Is this normal?
 There is no noise from the tuner during this time.
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