Guys,
I run my KX3 as IF on 2m FM running either 3w for 25w or 5w for 50w
out of the 2m amplifier. I have not noticed the KX3 getting overly
hot, even though FM is key down continuous carrier.
But I would be careful at full power. I can run 270w with 12w input
on 20m. With 5w input I get 130w (note the values in the table on
the website are overrated due to a measurement error - the K3 outputs
12w and not 15w). This using my CCI model EB27A amplifier rated for
300w with 20w drive.
http://www.kl7uw.com/HF-300PA.htm
I have found most amps will provide usable though lower output if
underdriven. The KXPA100 may be capable of something like 60w with
5w drive? Gain often is a bit higher as lower levels of drive.
73, Ed - KL7UW
---------------------
Date: Sun, 24 Mar 2013 19:11:33 +1000
From: Gary Gregory <[email protected]>
To: Fred Smith <[email protected]>
Cc: [email protected]
Subject: Re: [Elecraft] KX3 Amp
Not sure 11W drive is good for normal rag chewing with the KX3. It does get
rather hot to touch.
I would hope that the KXPA100 would only require 5W for 100W output or
close to that.
73
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