Just as a bit of anecdotal data, I am feeding a 20m dipole with 1200 watts
through 600-ohm open line on 40 through 10 meters. The SWR on 40 meters
approaches 100:1 (the line is short, but I am still eating about 2.2 dB loss).
Anyway, this presents a very difficult problem for most tuners -- and
PM
To: Elecraft Reflector
Subject: Re: [Elecraft] New from Elecraft: KPA1500 amplifier with built-in ATU,
separate power supply
There seems to be some disappointment that a relatively compact wide-range
auto-tuner at legal limit CCS (or even ICAS) is not included. I don’t consider
this a negative.
There seems to be some disappointment that a relatively compact wide-range
auto-tuner at legal limit CCS (or even ICAS) is not included. I don’t consider
this a negative.
1. A legal limit "LOW LOSS" CCS tuner using the build methods of most typical
ham auto-tuners would be large and heavy wit
Hi Wayne/Eric and all,
Congratulations; it looks you have done what everybody wanted. Do you have
any data on IMD at the 1500W level? I have been pleading with you in the
past to take the lead in improving the miserable record of solid state PA
stages. Is it happening?
AB2TC - Knut
--
View thi
Without modeling it, I would guess that it will actually narrow the matched BW
and it makes it a single band antenna at the same time.
My Drake L4-B would drive anything. When I decided I needed a new challenge
(9BDXCC) I wanted to get on 160. Of course the Drake didn't cover 160 and my
then
I have to keep physically restraining myself from placing an order
just for the pleasure of owning one! It's *just* *so* *Elecraft*! :).
- kb7psg
On Fri, 21 Apr 2017, Clay Autery wrote:
Wayne, Eric, and everyone else who had/has a hand in making this happen:
Well done! Simply superb
Hi Clay,
You're on the list. Thanks!
Wayne
N6KR
http://www.elecraft.com
> On Apr 21, 2017, at 10:44 AM, Clay Autery wrote:
>
> Wayne, Eric, and everyone else who had/has a hand in making this happen:
>
> Well done! Simply superb effort to overcome multiple and significant
> obstacles
It is very easy to put a hairpin coil on your top band vertical and bring
the resonant SWR to 1:1. This should give you much more usable SWR
bandwidth for the KPA1500. Many commercial tube amplifiers will only
tolerate 2:1 SWR.
John KK9A
>From Wes Stewart n7ws
Fri Apr 21 13:11:12 EDT 2017
I'm n
Wayne, Eric, and everyone else who had/has a hand in making this happen:
Well done! Simply superb effort to overcome multiple and significant
obstacles on many fronts.
Please, do place me on the list of folks keenly interested in knowing
when one might place an order/pre-order. :-)
Out-friggin
wayne burdick wrote
> We’re pleased to announce our KPA1500 solid-state amplifier, covering 160
> to 6 meters. Max power output is 1500 Watts. Other important features
> include:
>
> - Small RF deck fits on nearly any desktop (~4.5 x 13 x 11.5”, HWD);
> weighs only ~22 pounds
> - [...]
*/
>
Nice! When you asked what we would want in a high power amp, this matched
my wish list perfectly. Great job Wayne!
John KK9A
From: Wayne Burdick n6kr
Fri Apr 21 00:01:29 EDT 2017
We’re pleased to announce our KPA1500 solid-state amplifier, covering 160
to 6 meters. Max power output is 1500 Wat
We’re pleased to announce our KPA1500 solid-state amplifier, covering 160 to 6
meters. Max power output is 1500 Watts. Other important features include:
- Small RF deck fits on nearly any desktop (~4.5 x 13 x 11.5”, HWD); weighs
only ~22 pounds
- Separate lightweight switching power supply w
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