Re: [Elecraft] Please do a KPA1500

[Nels Nelsen]

Hi Fred

Your looking for a bigger Elecraft  amp?

Just put two 500's side by side and drive them 180 degrees out of phase and
take their output and drive a balanced line to your antenna. Be sure to
come back and let us know how it works best for you.
Have fun with it.

NE7LS

   n_n

Remember that all the problems that you are comming up with have already
been solved. Just read the back issues of QST, Ham Radio and 73's magazine.
Building it is  'more'  than half the fun.

On Dec 30, 2016 9:37 AM, "Fredric Serota"  wrote:

> Now more than ever there is a need for a 1500 watt amplifier of the
> quality and function of the KPA500. PLEASE, Elecraft, reconsider your
> decision to produce a KPA 1500. You could use the front end of the KPA500
> as a controller?
>
> Fred Serota, K3BHX
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Re: [Elecraft] Please do a KPA1500

[Joe Subich, W4TV]

On 12/31/2016 11:22 PM, Jim Brown wrote:

Audio processing can create distortion only in the passband of the
crystal filters.


Not in the case of Yaesu and Icom (at least).  Both use ALC circuits
with excess gain which activate after the PA is driven into saturation.
The excess gain also drives the IF and driver stages into saturation.
Since the "roofing filter" (on rigs like the FT-1000 or IC-756 series)
is a relatively broad VHF filter, that distortion, clipping and splatter 
is not limited to the audio bandwidth and easily extends to

25 KHz or more.

73,

   ... Joe, W4TV

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Re: [Elecraft] Please do a KPA1500

[Jim Brown]

Audio processing can create distortion only in the passband of the 
crystal filters. It may sound varying degrees of awful, but it doesn't 
cause splatter. You've got to overdrive an RF stage or have that stage 
drive a mismatched load, or drive it with AGC engaged, or stuff like 
that to generate splatter.


73, Jim K9YC

On Sat,12/31/2016 4:04 PM, Ignacy wrote:

The IMD as measured are misleading. Take FT1000 or FT5000. Measured IMD in
class A perhaps -50db but real one with processing due to aggressive ALC of
perhaps -25 db.



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Re: [Elecraft] Please do a KPA1500

[Ignacy]

The Expert 1.3k is sold with the 15 db restriction. But anybody can do a low
power mod and it is legal.

ARLL Review (July 16) shows IMD at 1.3 KW level:
  3rd/5th/7th/9th (14 MHz, 1300 W PEP): –31/–39/–57/–55 dB.

Seems not to be worse than Acom 1500.

The IMD as measured are misleading. Take FT1000 or FT5000. Measured IMD in
class A perhaps -50db but real one with processing due to aggressive ALC of
perhaps -25 db.

Good feature of the expert is automatic 110/220V supply. If 220V is
unavailable or sags, switch to lower power. 

Ignacy, NO9E




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Re: [Elecraft] Please do a KPA1500

[Chris Tate - N6WM]

In fact..  a nice Elecraft Combiner added to the k-line  then why  buy one 
when you can have 2   such a great idea :-).  Everyones happy.

HNY

Chris
N6WM

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ken K6MR
Sent: Saturday, December 31, 2016 12:57 PM
To: Scott Manthe <n...@arrl.net>; elecraft@mailman.qth.net
Subject: Re: [Elecraft] Please do a KPA1500

So buy another KPA500 and combine them. Easy peasy.



Ken K6MR







From: Scott Manthe<mailto:n...@arrl.net>
Sent: Saturday, December 31, 2016 12:22 PM
To: elecraft@mailman.qth.net<mailto:elecraft@mailman.qth.net>
Subject: Re: [Elecraft] Please do a KPA1500



I think a KPA1000 would be pretty popular if priced appropriately. I love my 
KPA500, but a little extra oomph would be nice now and then.

73,
Scott N9AA


On 12/31/16 10:39 AM, j...@kk9a.com wrote:
> Since I sometimes bring my station to the Caribbean, one of the main 
> reasons that I switched to the Elecraft line was for the size and 
> weight. I have a
> KPA500 and an it is an awesome amplifier but I would like a little 
> more power at times. I considered the Expert 1.3k that many with 
> similar needs use but I have not swapped my Elecraft due to the 
> reasons that W4TV mentioned below. It may not be practical for 
> Elecraft to manufacture a small lightweight KPA1500 at an affordable 
> price however perhaps a KPA750 or
> KPA1000 could be. I would certainly be interested in one of these. I 
> read many posts on this list saying that 3 or 4dBs make almost no 
> difference. I did a quick search of my last 200,000+ QSOs and could 
> not find any of the stations making this claim in my logs so I wonder how 
> active they are on HF.
>
> John KK9A
>
>
> From: Joe Subich W4TV
>
> The Expert 1.3K also violates the 15 dB gain limitation rule and is a 
> real garbage generator.  Expert's own test data in their application 
> for FCC approval showed IMD at -27 dB at 800 W!  For your 1 KW, each 
> of the IMD products are probably around .5W and I'd hate to even think 
> about the IMD level at 1.3 KW!
>
> 73,
>
>  ... Joe, W4TV
>
>
>

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Re: [Elecraft] Please do a KPA1500

[Ken K6MR]

So buy another KPA500 and combine them. Easy peasy.



Ken K6MR







From: Scott Manthe<mailto:n...@arrl.net>
Sent: Saturday, December 31, 2016 12:22 PM
To: elecraft@mailman.qth.net<mailto:elecraft@mailman.qth.net>
Subject: Re: [Elecraft] Please do a KPA1500



I think a KPA1000 would be pretty popular if priced appropriately. I
love my KPA500, but a little extra oomph would be nice now and then.

73,
Scott N9AA


On 12/31/16 10:39 AM, j...@kk9a.com wrote:
> Since I sometimes bring my station to the Caribbean, one of the main reasons
> that I switched to the Elecraft line was for the size and weight. I have a
> KPA500 and an it is an awesome amplifier but I would like a little more
> power at times. I considered the Expert 1.3k that many with similar needs
> use but I have not swapped my Elecraft due to the reasons that W4TV
> mentioned below. It may not be practical for Elecraft to manufacture a small
> lightweight KPA1500 at an affordable price however perhaps a KPA750 or
> KPA1000 could be. I would certainly be interested in one of these. I read
> many posts on this list saying that 3 or 4dBs make almost no difference. I
> did a quick search of my last 200,000+ QSOs and could not find any of the
> stations making this claim in my logs so I wonder how active they are on HF.
>
> John KK9A
>
>
> From: Joe Subich W4TV
>
> The Expert 1.3K also violates the 15 dB gain limitation rule and is a
> real garbage generator.  Expert's own test data in their application
> for FCC approval showed IMD at -27 dB at 800 W!  For your 1 KW, each
> of the IMD products are probably around .5W and I'd hate to even
> think about the IMD level at 1.3 KW!
>
> 73,
>
>  ... Joe, W4TV
>
>
>

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Re: [Elecraft] Please do a KPA1500

[Scott Manthe]

I think a KPA1000 would be pretty popular if priced appropriately. I 
love my KPA500, but a little extra oomph would be nice now and then.


73,
Scott N9AA


On 12/31/16 10:39 AM, j...@kk9a.com wrote:

Since I sometimes bring my station to the Caribbean, one of the main reasons
that I switched to the Elecraft line was for the size and weight. I have a
KPA500 and an it is an awesome amplifier but I would like a little more
power at times. I considered the Expert 1.3k that many with similar needs
use but I have not swapped my Elecraft due to the reasons that W4TV
mentioned below. It may not be practical for Elecraft to manufacture a small
lightweight KPA1500 at an affordable price however perhaps a KPA750 or
KPA1000 could be. I would certainly be interested in one of these. I read
many posts on this list saying that 3 or 4dBs make almost no difference. I
did a quick search of my last 200,000+ QSOs and could not find any of the
stations making this claim in my logs so I wonder how active they are on HF.

John KK9A


From: Joe Subich W4TV

The Expert 1.3K also violates the 15 dB gain limitation rule and is a
real garbage generator.  Expert's own test data in their application
for FCC approval showed IMD at -27 dB at 800 W!  For your 1 KW, each
of the IMD products are probably around .5W and I'd hate to even
think about the IMD level at 1.3 KW!

73,

 ... Joe, W4TV





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[Elecraft] Please do a KPA1500

[john]

Since I sometimes bring my station to the Caribbean, one of the main reasons
that I switched to the Elecraft line was for the size and weight. I have a
KPA500 and an it is an awesome amplifier but I would like a little more
power at times. I considered the Expert 1.3k that many with similar needs
use but I have not swapped my Elecraft due to the reasons that W4TV
mentioned below. It may not be practical for Elecraft to manufacture a small
lightweight KPA1500 at an affordable price however perhaps a KPA750 or
KPA1000 could be. I would certainly be interested in one of these. I read
many posts on this list saying that 3 or 4dBs make almost no difference. I
did a quick search of my last 200,000+ QSOs and could not find any of the
stations making this claim in my logs so I wonder how active they are on HF.

John KK9A 


From: Joe Subich W4TV

The Expert 1.3K also violates the 15 dB gain limitation rule and is a
real garbage generator.  Expert's own test data in their application
for FCC approval showed IMD at -27 dB at 800 W!  For your 1 KW, each
of the IMD products are probably around .5W and I'd hate to even
think about the IMD level at 1.3 KW!

73,

... Joe, W4TV


On 12/30/2016 11:07 PM, Ignacy wrote:
> With a little work, KPA500 can be a KW amp while losing weight. This is by
> using LDMOS and a commercial PS. But then KAT500 would have to be beefed
up
> to KAT1000.
>
> I have Expert 1.3k that I use with KX3 for > 1 KW. The Expert is 21 lbs
> (lighter than Elecraft) with a 3:1 tuner + 4 antenna switch and automatic
> 110/220V switching; KPA500/KAT500 would be 35 lbs + cables. Also without
> dealers markup, the no-ATU version is not that much expensive than KPA500.
> But the Expert needs Elecraft refinement.
>
> One KW is great when working portable as DX. Everybody responds even with
> impromptu antennas.
>
> Ignacy, NO9E

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Re: [Elecraft] Please do a KPA1500

[Joe Subich, W4TV]

I have Expert 1.3k that I use with KX3 for > 1 KW.


The Expert 1.3K also violates the 15 dB gain limitation rule and is a
real garbage generator.  Expert's own test data in their application
for FCC approval showed IMD at -27 dB at 800 W!  For your 1 KW, each
of the IMD products are probably around .5W and I'd hate to even
think about the IMD level at 1.3 KW!

73,

   ... Joe, W4TV


On 12/30/2016 11:07 PM, Ignacy wrote:

With a little work, KPA500 can be a KW amp while losing weight. This is by
using LDMOS and a commercial PS. But then KAT500 would have to be beefed up
to KAT1000.

I have Expert 1.3k that I use with KX3 for > 1 KW. The Expert is 21 lbs
(lighter than Elecraft) with a 3:1 tuner + 4 antenna switch and automatic
110/220V switching; KPA500/KAT500 would be 35 lbs + cables. Also without
dealers markup, the no-ATU version is not that much expensive than KPA500.
But the Expert needs Elecraft refinement.

One KW is great when working portable as DX. Everybody responds even with
impromptu antennas.

Ignacy, NO9E



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Re: [Elecraft] Please do a KPA1500

[Ignacy]

With a little work, KPA500 can be a KW amp while losing weight. This is by
using LDMOS and a commercial PS. But then KAT500 would have to be beefed up
to KAT1000. 

I have Expert 1.3k that I use with KX3 for > 1 KW. The Expert is 21 lbs
(lighter than Elecraft) with a 3:1 tuner + 4 antenna switch and automatic
110/220V switching; KPA500/KAT500 would be 35 lbs + cables. Also without
dealers markup, the no-ATU version is not that much expensive than KPA500.
But the Expert needs Elecraft refinement. 

One KW is great when working portable as DX. Everybody responds even with
impromptu antennas.

Ignacy, NO9E



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Re: [Elecraft] Please do a KPA1500

[Charlie T, K3ICH]

I can tell you, I have a lot of 50 MHz DX in the log that a home brew 4CX-1000A 
made possible.

Unlike HF DXing, some six meter ES & F2 openings last only a few minutes, and 
the early bird + big amp, gets the proverbial worm.

I am definitely NOT opposed to running high power.

My only piece of logic is that if you're going to go to the trouble and expense 
of running an amp, go for legal limit.
Agreed, SS legal limit amps are pricey, but a legal limit tube amp is much 
easier on the radio budget.

Yeah, I know 500 watts will help, but as we all agree, 1500 will do it when 500 
won't.

73, Charlie k3ICH

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of N2TK, Tony
Sent: Friday, December 30, 2016 6:39 PM
To: 'Mike va3mw' <va...@portcredit.net>
Cc: 'Elecraft Mail List' <Elecraft@mailman.qth.net>
Subject: Re: [Elecraft] Please do a KPA1500

During mediocre conditions there has been more than once on 80 and 160M the DX 
could not quite get my call correct with the KPA500. Once the Acom 2000A timed 
out they had no trouble copying my call. Most of the time I operate the K3 
barefoot. When I need more oomph I turn on the KPA500. If conditions are not 
good I turn on the Acom. There are times the difference between 600W and 1500W 
can make the difference between a QSO and no QSO. It would be nice to have a 
1500W S-S amp in the basement alongside the KPA500. Any amp I would buy needs 
to be able to be controlled remotely like the KPA500 and the Acom. The only 
real advantage to me switching from a tube to a solid-state amp would be the 
timeout thing. During a contest and when a DXpedition is going, then I just 
leave the Acom on. No big thing letting it sit there idling.

73 and HNY
N2TK, Tony 



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Re: [Elecraft] Please do a KPA1500

[N2TK, Tony]

During mediocre conditions there has been more than once on 80 and 160M the DX 
could not quite get my call correct with the KPA500. Once the Acom 2000A timed 
out they had no trouble copying my call. Most of the time I operate the K3 
barefoot. When I need more oomph I turn on the KPA500. If conditions are not 
good I turn on the Acom. There are times the difference between 600W and 1500W 
can make the difference between a QSO and no QSO. It would be nice to have a 
1500W S-S amp in the basement alongside the KPA500. Any amp I would buy needs 
to be able to be controlled remotely like the KPA500 and the Acom. The only 
real advantage to me switching from a tube to a solid-state amp would be the 
timeout thing. During a contest and when a DXpedition is going, then I just 
leave the Acom on. No big thing letting it sit there idling.

73 and HNY
N2TK, Tony 

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike va3mw
Sent: Friday, December 30, 2016 6:09 PM
To: Dean L <dean.k...@gmail.com>
Cc: Elecraft Mail List <Elecraft@mailman.qth.net>
Subject: Re: [Elecraft] Please do a KPA1500

That will be a lot of money for only an extra S unit (barely). Just over a 4db 
gain off the top of my head. 

It is the first 500 W that count. 

Mike va3mw



> On Dec 30, 2016, at 1:27 PM, Dean L <dean.k...@gmail.com> wrote:
> 
> Fred
> 500w 》1500 w -It's less than an S-unit increase in signal and 
> makes your power meter spin fast.
> Just putting it into perspective ...I'm sure you already knew this.
> Happy New Year/73
> Dean K2WW
> 
>> On Dec 30, 2016 12:36 PM, "Fredric Serota" <fser...@msn.com> wrote:
>> 
>> Now more than ever there is a need for a 1500 watt amplifier of the 
>> quality and function of the KPA500. PLEASE, Elecraft, reconsider your 
>> decision to produce a KPA 1500. You could use the front end of the 
>> KPA500 as a controller?
>> 
>> Fred Serota, K3BHX
>> __
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Re: [Elecraft] Please do a KPA1500

[Mike va3mw]

That will be a lot of money for only an extra S unit (barely). Just over a 4db 
gain off the top of my head. 

It is the first 500 W that count. 

Mike va3mw



> On Dec 30, 2016, at 1:27 PM, Dean L  wrote:
> 
> Fred
> 500w 》1500 w -It's less than an S-unit increase in signal and makes
> your power meter spin fast.
> Just putting it into perspective ...I'm sure you already knew this.
> Happy New Year/73
> Dean K2WW
> 
>> On Dec 30, 2016 12:36 PM, "Fredric Serota"  wrote:
>> 
>> Now more than ever there is a need for a 1500 watt amplifier of the
>> quality and function of the KPA500. PLEASE, Elecraft, reconsider your
>> decision to produce a KPA 1500. You could use the front end of the KPA500
>> as a controller?
>> 
>> Fred Serota, K3BHX
>> __
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Re: [Elecraft] Please do a KPA1500

[Eric Swartz - WA6HHQ, Elecraft]

Folks, we have not ever formally said we would never do a 1500W amp. We have 
said at times in the past that we were not doing one at that time, but we never 
rule anything out.


We're always looking for good suggestions and marketing input on what we should 
do in the future.


73,
Eric
/elecraft.com/

On 12/30/2016 12:16 PM, Guy Olinger K2AV wrote:

On Dec 30, 2016 12:36 PM, "Fredric Serota"  wrote:

Now more than ever there is a need for a 1500 watt amplifier of the
quality and function of the KPA500. PLEASE, Elecraft, reconsider your
decision to produce a KPA 1500.

Without debating how much use is had from a 5 dB increase in signal
strength (a lot), the real reason Elecraft did not do a 1500 watt amp
is all business and marketing. Elecraft is a small business and as
such does not have the financial "mass" to absorb jabs in the bank
balance from the marketplace that do not doubly pay for the research
and development.

There is a breaking point for ham-priced transistor amp equipment
somewhere beyond 500 watts and before 1500 that has to do with
reliability of components at those stress levels, and the cost of
components and circuits to control the amp's response to the
unbelievably bad treatment afforded amps by some purchasers.

If this were not true, you would have seen dozens of 2K transistor
equivalents to the likes of the Alpha 9500 and 8410, with which you
can actually put a brick on the key and let it run at 1500 watts out
indefinitely or until you lose your nerve.

I'm sure the military has stuff, but then the military has specs and
bidding, and they are willing to pay what it REALLY costs for that
layer of reliability.

Hams are unwilling to pay mil-spec prices, and Big E. knows it. They
also know that a major failure of an expensively developed product
with a lot of warranty returns can put a small business into chapter
11.

Wayne & Co have put out a lot of leading edge products, kept their
business rolling through the Great Recession, and embarassed the fool
out of Yakencom for the better part of a decade, kicking the ham
equipment industry into a new level of performance where they really
didn't want to go.

When Wayne *doesn't* do something that gets repeated requests, there
is a reason. I trust his judgement, because he has earned that.

I particularly do not want them to go out of business and find myself
stuck with Yakencom again.

If it ain't broke, don't fix it.

73, Guy K2AV
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Re: [Elecraft] Please do a KPA1500

[Ron D'Eau Claire]

The same argument goes for any 3:1 power ratio, but Ham radio is about having 
fun and if someone has more fun with QRO within legal limits, why not? 

In the 1960's I added a new final to a homebrew CW rig and went from 100 mW out 
to a full 1 Watt as soon as a suitable transistor became affordable. By 
comparison that was real QRO! Years later I happily upgraded my K2 from a 10 
watt rig to a 100 watt rig when the KPA100 became available.

73, Ron AC7AC 

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Dean L
Sent: Friday, December 30, 2016 10:28 AM
To: Elecraft Mail List
Subject: Re: [Elecraft] Please do a KPA1500

Fred
500w 》1500 w -It's less than an S-unit increase in signal and makes your 
power meter spin fast.
Just putting it into perspective ...I'm sure you already knew this.
Happy New Year/73
Dean K2WW

On Dec 30, 2016 12:36 PM, "Fredric Serota" <fser...@msn.com> wrote:

> Now more than ever there is a need for a 1500 watt amplifier of the 
> quality and function of the KPA500. PLEASE, Elecraft, reconsider your 
> decision to produce a KPA 1500. You could use the front end of the 
> KPA500 as a controller?
>
> Fred Serota, K3BHX
> __

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Re: [Elecraft] Please do a KPA1500

[Ken G Kopp]

I have no interest in a 1 or 1.5 KW Amp.

Guy (K2AV) sums it up nicely.

73!

Ken Kopp - K0PP

On Dec 30, 2016 1:18 PM, "Guy Olinger K2AV"  wrote:

> On Dec 30, 2016 12:36 PM, "Fredric Serota"  wrote:
> > Now more than ever there is a need for a 1500 watt amplifier of the
> > quality and function of the KPA500. PLEASE, Elecraft, reconsider your
> > decision to produce a KPA 1500.
>
> Without debating how much use is had from a 5 dB increase in signal
> strength (a lot), the real reason Elecraft did not do a 1500 watt amp
> is all business and marketing. Elecraft is a small business and as
> such does not have the financial "mass" to absorb jabs in the bank
> balance from the marketplace that do not doubly pay for the research
> and development.
>
> There is a breaking point for ham-priced transistor amp equipment
> somewhere beyond 500 watts and before 1500 that has to do with
> reliability of components at those stress levels, and the cost of
> components and circuits to control the amp's response to the
> unbelievably bad treatment afforded amps by some purchasers.
>
> If this were not true, you would have seen dozens of 2K transistor
> equivalents to the likes of the Alpha 9500 and 8410, with which you
> can actually put a brick on the key and let it run at 1500 watts out
> indefinitely or until you lose your nerve.
>
> I'm sure the military has stuff, but then the military has specs and
> bidding, and they are willing to pay what it REALLY costs for that
> layer of reliability.
>
> Hams are unwilling to pay mil-spec prices, and Big E. knows it. They
> also know that a major failure of an expensively developed product
> with a lot of warranty returns can put a small business into chapter
> 11.
>
> Wayne & Co have put out a lot of leading edge products, kept their
> business rolling through the Great Recession, and embarassed the fool
> out of Yakencom for the better part of a decade, kicking the ham
> equipment industry into a new level of performance where they really
> didn't want to go.
>
> When Wayne *doesn't* do something that gets repeated requests, there
> is a reason. I trust his judgement, because he has earned that.
>
> I particularly do not want them to go out of business and find myself
> stuck with Yakencom again.
>
> If it ain't broke, don't fix it.
>
> 73, Guy K2AV
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
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>
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Re: [Elecraft] Please do a KPA1500

[German Duran]

I agree. German HK3J

El vie., 30 dic. 2016 3:18 p. m., Guy Olinger K2AV 
escribió:

> On Dec 30, 2016 12:36 PM, "Fredric Serota"  wrote:
> > Now more than ever there is a need for a 1500 watt amplifier of the
> > quality and function of the KPA500. PLEASE, Elecraft, reconsider your
> > decision to produce a KPA 1500.
>
> Without debating how much use is had from a 5 dB increase in signal
> strength (a lot), the real reason Elecraft did not do a 1500 watt amp
> is all business and marketing. Elecraft is a small business and as
> such does not have the financial "mass" to absorb jabs in the bank
> balance from the marketplace that do not doubly pay for the research
> and development.
>
> There is a breaking point for ham-priced transistor amp equipment
> somewhere beyond 500 watts and before 1500 that has to do with
> reliability of components at those stress levels, and the cost of
> components and circuits to control the amp's response to the
> unbelievably bad treatment afforded amps by some purchasers.
>
> If this were not true, you would have seen dozens of 2K transistor
> equivalents to the likes of the Alpha 9500 and 8410, with which you
> can actually put a brick on the key and let it run at 1500 watts out
> indefinitely or until you lose your nerve.
>
> I'm sure the military has stuff, but then the military has specs and
> bidding, and they are willing to pay what it REALLY costs for that
> layer of reliability.
>
> Hams are unwilling to pay mil-spec prices, and Big E. knows it. They
> also know that a major failure of an expensively developed product
> with a lot of warranty returns can put a small business into chapter
> 11.
>
> Wayne & Co have put out a lot of leading edge products, kept their
> business rolling through the Great Recession, and embarassed the fool
> out of Yakencom for the better part of a decade, kicking the ham
> equipment industry into a new level of performance where they really
> didn't want to go.
>
> When Wayne *doesn't* do something that gets repeated requests, there
> is a reason. I trust his judgement, because he has earned that.
>
> I particularly do not want them to go out of business and find myself
> stuck with Yakencom again.
>
> If it ain't broke, don't fix it.
>
> 73, Guy K2AV
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
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> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to hk3j...@gmail.com
>
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Re: [Elecraft] Please do a KPA1500

[Harry Yingst via Elecraft]

I kinda like the remote amp thought; My wife loves the heat and I like it cool.

I could put the amp in her craft room and let her enjoy the extra heat while my 
shack stays cooler.

  From: Fredric Serota <fser...@msn.com>
 To: "elecraft@mailman.qth.net" <elecraft@mailman.qth.net> 
 Sent: Friday, December 30, 2016 12:35 PM
 Subject: [Elecraft] Please do a KPA1500
   
Now more than ever there is a need for a 1500 watt amplifier of the quality and 
function of the KPA500. PLEASE, Elecraft, reconsider your decision to produce a 
KPA 1500. You could use the front end of the KPA500 as a controller?

Fred Serota, K3BHX
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Re: [Elecraft] Please do a KPA1500

[Guy Olinger K2AV]

On Dec 30, 2016 12:36 PM, "Fredric Serota"  wrote:
> Now more than ever there is a need for a 1500 watt amplifier of the
> quality and function of the KPA500. PLEASE, Elecraft, reconsider your
> decision to produce a KPA 1500.

Without debating how much use is had from a 5 dB increase in signal
strength (a lot), the real reason Elecraft did not do a 1500 watt amp
is all business and marketing. Elecraft is a small business and as
such does not have the financial "mass" to absorb jabs in the bank
balance from the marketplace that do not doubly pay for the research
and development.

There is a breaking point for ham-priced transistor amp equipment
somewhere beyond 500 watts and before 1500 that has to do with
reliability of components at those stress levels, and the cost of
components and circuits to control the amp's response to the
unbelievably bad treatment afforded amps by some purchasers.

If this were not true, you would have seen dozens of 2K transistor
equivalents to the likes of the Alpha 9500 and 8410, with which you
can actually put a brick on the key and let it run at 1500 watts out
indefinitely or until you lose your nerve.

I'm sure the military has stuff, but then the military has specs and
bidding, and they are willing to pay what it REALLY costs for that
layer of reliability.

Hams are unwilling to pay mil-spec prices, and Big E. knows it. They
also know that a major failure of an expensively developed product
with a lot of warranty returns can put a small business into chapter
11.

Wayne & Co have put out a lot of leading edge products, kept their
business rolling through the Great Recession, and embarassed the fool
out of Yakencom for the better part of a decade, kicking the ham
equipment industry into a new level of performance where they really
didn't want to go.

When Wayne *doesn't* do something that gets repeated requests, there
is a reason. I trust his judgement, because he has earned that.

I particularly do not want them to go out of business and find myself
stuck with Yakencom again.

If it ain't broke, don't fix it.

73, Guy K2AV
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Re: [Elecraft] Please do a KPA1500

[Charlie T, K3ICH]

If you're being heard at 20 dB over S9 when running one kilowatt, you'll still 
be S5 at 100 milliwatts!

That said, if you're gonna run an amp, why not go for max legal?

73, Charlie k3ICH



-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Dean L
Sent: Friday, December 30, 2016 1:28 PM
To: Elecraft Mail List <Elecraft@mailman.qth.net>
Subject: Re: [Elecraft] Please do a KPA1500

Fred
500w 》1500 w -It's less than an S-unit increase in signal and makes your 
power meter spin fast.
Just putting it into perspective ...I'm sure you already knew this.
Happy New Year/73
Dean K2WW



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Re: [Elecraft] Please do a KPA1500

[Jim Brown]

On Fri,12/30/2016 10:27 AM, Dean L wrote:

500w 》1500 w -It's less than an S-unit increase in signal


Anyone who has tried to work a station who doesn't hear well because of 
a high noise level, or with a poor signal path, knows that even 1 or 2 
dB can be the difference between making a QSO or not. I have experienced 
this MANY times. On 160M, the band is often full from 1,800 to above 
1,900 kHz during contests, and most amps need to be re-tuned to get full 
output when moving from one end to the other. If I got lazy and failed 
to do that, my 1.5 kW amp might be down to 1 kW or so, That's less than 
2dB, but there have been times when re-tuning would get the other 
station to hear me when he hadn't responded to multiple calls.


73, Jim K9YC

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Re: [Elecraft] Please do a KPA1500

[Dean L]

Fred
500w 》1500 w -It's less than an S-unit increase in signal and makes
your power meter spin fast.
Just putting it into perspective ...I'm sure you already knew this.
Happy New Year/73
Dean K2WW

On Dec 30, 2016 12:36 PM, "Fredric Serota"  wrote:

> Now more than ever there is a need for a 1500 watt amplifier of the
> quality and function of the KPA500. PLEASE, Elecraft, reconsider your
> decision to produce a KPA 1500. You could use the front end of the KPA500
> as a controller?
>
> Fred Serota, K3BHX
> __
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>
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[Elecraft] Please do a KPA1500

[Fredric Serota]

Now more than ever there is a need for a 1500 watt amplifier of the quality and 
function of the KPA500. PLEASE, Elecraft, reconsider your decision to produce a 
KPA 1500. You could use the front end of the KPA500 as a controller?

Fred Serota, K3BHX
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