I don't know about 100% ICAS. But I can say from personal experience,
the KPA1500 is able to withstand years of RTTY contest duty without a
problem, other than a lot of fan noise when it really gets warmed up good.
Can't say anything with respect to proper levels on FT8 as I don't run
the mode. But the logic of reducing the power may not actually provide
any benefit TO THE AMP. If I remember right, the amp's disipation was
about the same at 500W or 1KW as at 1500W. Can't remember but that would
be one thing to check. Dialing back on the Po does not mean you are
getting a corresponding drop in Pd.
Good luck.
73/jeff/ac0c
alpha-charlie-zero-charlie
www.ac0c.com
On 7/10/21 11:43 AM, jim.thom jim.thom@telus.net wrote:
Date: Wed, 7 Jul 2021 18:15:50 -0700
From: Richard Solomon <dickw1ksz@gmail.com>
To: "amps@contesting.com" <amps@contesting.com>
Subject: Re: [Amps] FT8 power with the KPA1500
<100% ICAS ????
<Isn't that a contradiction of terms ??
<73, Dick, W1KSZ
## I'm trying to wrap my head around... 100% ICAS !
## IMO, elecraft should have provided for at least one lower vdc, and
probably 2 lower vdc's. Then one could run 1 kw PO..with much greater
eff, and less heat. Or say 500w po, using the very lowest vdc. The
SPE and also the UK SS amps both have 3 x vdc's to choose from.
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