The SWR issue isn’t really a show stopper, as the ATU, once “trained” can
generally keep the SWR low enough. In normal CW content operation, including
lots of CQing, the fans are barely audible with a Radiosport headset. And, you
could always put the amp in another room.
A more annoying issue is having to constantly adjust the drive power, which is
sensitive to SWR, PA temperature, and some other factors I haven’t yet
identified. (This with the K3.)
All that said, I think the SPE 2K might be a better choice.
73,
Scott K9MA
----------
Scott Ellington
--- via iPad
> On Mar 3, 2020, at 12:16 PM, Edward Sawyer <EdwardS@sbelectronics.com> wrote:
>
> Super loud and super SWR sensitive doesn’t sound like good characteristics
> for an amp. Backing off at 1.3:1 doesn’t leave one much play on 80 or 160M.
>
> Ed N1UR
>
> -----Original Message-----
> From: CQ-Contest
> [mailto:cq-contest-bounces+edwards=sbelectronics.com@contesting.com] On
> Behalf Of K9MA
> Sent: Tuesday, March 3, 2020 11:08 AM
> To: rjairam@gmail.com
> Cc: xaxaxaxa yayayaya; CQ-Contest Reflector
> Subject: Re: [CQ-Contest] Elecraft KPA 1500 vs.OM 2000A
>
> My only issue with the KPA1500 is that it’s very fussy about SWR: it won’t
> put out full power at more than about 1.3:1. However, the ATU will usually
> get it low enough. I’m told the Expert 2K will do 1.5 kW into 3:1.
>
> Yes, at full speed the KPA1500 fans sound like a squadron of F-35’s taking
> off. Worst case for CW contesting isn’t too bad. Of course, you could remote
> it.
>
> 73,
> Scott K9MA
>
> ----------
>
> Scott Ellington
>
> --- via iPad
>
>> On Mar 3, 2020, at 7:06 AM, "rjairam@gmail.com" <rjairam@gmail.com> wrote:
>>
>> Nothing matches the speed of tuning of a solid state amp.
>>
>> So, I'd go with the KPA1500.
>>
>> 73
>> Ria, N2RJ
>>
>>> On Mon, 2 Mar 2020 at 22:44, Bill kollenbaum via CQ-Contest
>>> <cq-contest@contesting.com> wrote:
>>>
>>> Looking for a backup amp for the new station. Probably going to run SO2R
>>> so auto-tune is important. I'm running a K3S and the second radio will
>>> also be a K3S. I really don't care if the amp "matches" the K3S in looks.
>>> Like most of you guys I'm concerned about performance. Both rigs are equal
>>> in price.
>>> Here's the question: If you were buying a new amp and were buying it to
>>> satisfy the above criteria, which would you choose and why?
>>> K4XS
>>>
>>> _______________________________________________
>>> CQ-Contest mailing list
>>> CQ-Contest@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/cq-contest
>> _______________________________________________
>> CQ-Contest mailing list
>> CQ-Contest@contesting.com
>> http://lists.contesting.com/mailman/listinfo/cq-contest
>
> _______________________________________________
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> CQ-Contest@contesting.com
> http://lists.contesting.com/mailman/listinfo/cq-contest
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