Do you mean driving both a KPA1500 AND a KPA500 at the same time?! I don't
know where that would be legal, practical, or desirable. But there's lots
of stuff I don't know...
If you mean driving one's choice of KPA1500 OR KPA500, read on:
Before KPA1500 became available, I had an Alpha 87A on K3
From: Fred Jensen
Date: 2/12/19 4:45 PM (GMT-06:00) To: elecraft at mailman.qth.net Subject:
Re: [Elecraft] KPA1500 vs SPE Amps
At the same time? [:-) Actually, I suppose one could drive 2 KPA500's
from one K3 and sum the output for a virtual KPA1000.
73,
Fred ["Skip"] K6DGW
, February 12, 2019 6:33:54 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA1500 vs SPE Amps
I'd be interested in the IMD figures with this configuration.
Are the amps being driven hard wire / parallel at the inputs or from a
power divider? And how are the outputs summed? Power divider
: RALPH TURK
Sent: Tuesday, February 12, 2019 6:23:12 PM
To: Ken K6MR; Fred Jensen; elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA1500 vs SPE Amps
SHOW HOW/EXPLAIN ETC. I AM VERY INTERESTED.
RALPH,AFA9RTI AM NOT SHOUTING KEY BOARD STUCK
> On February 12, 2019 at 7:06 PM Ken K6MR wr
I'd be interested in the IMD figures with this configuration.
Are the amps being driven hard wire / parallel at the inputs or from a
power divider? And how are the outputs summed? Power divider? How
much loss is in the output summing network? And is it broadband 160M -
6M?
Another
; Yes you can. I have been doing this for the last 3 years.
>
>
> Ken K6MR
>
>
>
>
> From: elecraft-boun...@mailman.qth.net on
> behalf of Fred Jensen
> Sent: Tuesday, February 12, 2019 2:45:49 PM
> To: elecraft@m
, February 12, 2019 2:45:49 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA1500 vs SPE Amps
At the same time? [:-) Actually, I suppose one could drive 2 KPA500's
from one K3 and sum the output for a virtual KPA1000.
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
On 2/12
Or one of these:
http://www.acom-bg.com/products/amplifier/acom-3x2000a
73,
Gary K9GS
Original message From: Fred Jensen Date:
2/12/19 4:45 PM (GMT-06:00) To: elecraft@mailman.qth.net Subject: Re:
[Elecraft] KPA1500 vs SPE Amps
At the same time? [:-) Actually, I
About:
"Has anyone had experience with both the KPA1500 and any of the current
(1.3K, 1.5K or 2K) Expert Linears from SPE?"
If you cherish silent, perfect CW QSK, then you need the KPA1500. SPE uses
clacking relays.
73, RoyK6XK
I have had the SPE 1.3k and now have the KPA1500. I drive them with a Flex 6600
and Anan 7000dle.
The issue I had with the SPE 1.3k was once you start pushing it past 1 KW out
the TX IMD starts to really get bad. This is due to the single LDMOS RF device
being pushed towards its limit. The
Actually, Elecraft should do that as an experiment. They could either make or
specify appropriate combiners/splitters to use on front and back and solve
other problems that might crop up. Surely they have lots of KPA500s sitting
around. Lots and lots. :-)
73, phil, K7PEH
P.S. My off-hand
Based on my experience with the KPA1500, you shouldn't expect to run a
solid state amplifier too close to it's rated output unless the SWR is
pretty low, like better than 1.2:1. An ATU may or may not be able to
keep the SWR that low. Otherwise, at a higher SWR, the amplifier output
will
At the same time? [:-) Actually, I suppose one could drive 2 KPA500's
from one K3 and sum the output for a virtual KPA1000.
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
On 2/12/2019 1:44 PM, Dave wrote:
Also, I’m wondering if anyone has run their KPA500 and a KPA1500 off of the
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