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Re: [Amps] FT8 power with the KPA1500

To: john@kk9a.com
Subject: Re: [Amps] FT8 power with the KPA1500
From: Thomas Walsh <w2co@comcast.net>
Date: Thu, 8 Jul 2021 14:31:44 -0600
List-post: <mailto:amps@contesting.com>
Well if you read the ft8 manual, it suggested not running more than say 35 or 
40w,
this is (or was) a low power weak signal mode! With all you guys running legal 
limit
it has become the channel 19 of the ham bands. Sure glad I'm proficient on CW!
Where the real DX is..
De W2CO


On Jul 8, 2021, at 12:50, <john@kk9a.com> <john@kk9a.com> wrote:

>From an amplifier heating standpoint it probably makes very little
difference what power level you use with an Elecraft KPA1500. See the
Elecraft post on efficiency in the link below. I am not an amp guru but I
believe SPE Expert amps have different PA voltages which increases their
lower power efficiency.

http://mailman.qth.net/pipermail/elecraft/2018-August/259502.html

73,
John KK9A 


Ron kh6dv wrote:

How much power can I run on FT8/FT4 with my new KPA1500 ?
A friend with the Expert amp limits his output to 1000 watts.

Ron KH6DV
Kaneohe Bay Hawaii

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