[CQ-Contest] Elecraft KPA 1500 vs.OM 2000A

[Dan]

I agree with Jim's comment. My KPA 1500 does not fold back until I reach 
close to 3 to 1. I rarely use the tuner and my CC 2L 40 will cover the whole 
band without using a tuner. I would imagine that certain combinations of 
impedance and reactance might have an effect on the fold back. The other 
elephant in the room is SWR being read on meters is not always what it 
seems. My Daiwa, KPA 1500 and K3 (running bare foot so not into amp input) 
can all have different SWR readings on the same frequency.

Dan W8CAR


-----Original Message----- 
From: Alan M. Eshleman
Sent: Wednesday, March 4, 2020 12:48 PM
To: k9yc at arrl.net
Cc: cq-contest
Subject: Re: [CQ-Contest] Elecraft KPA 1500 vs.OM 2000A

that's been my experience with my KPA1500...
----- Original Message -----
From: Jim Brown <k9yc at audiosystemsgroup.com>
To: cq-contest <cq-contest at contesting.com>
Sent: Tue, 03 Mar 2020 17:57:05 -0800 (PST)
Subject: Re: [CQ-Contest] Elecraft KPA 1500 vs.OM 2000A

On 3/3/2020 10:13 AM, Edward Sawyer wrote:
> super SWR sensitive doesn’t sound like good characteristics for an amp.

I have NOT experienced SWR sensitivity with reasonable antennas that the
KPA1500's built-in tuner can't handle. I suspect someone having this
problem has not RTFM, which describes how to train the tuner for each
antenna for each band, or has not taken the time to do it.

The KPA1500 can memorize settings for three different antennas for each
band for each of the two antenna ports.

And I DO get pretty close to 1.5kW on 6M.

73, Jim K9YC
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