Re: [Elecraft] Future of KPA500 & KAT500

2020-06-20 Thread Ken Winterling
Dave,

Do you own either/both the KPA500 or KAT500 and are familiar with their
operation?

The KPA500 is not involved in the receive path, it is only used for
transmitting, so it doesn't cause an issue on receive.  When in standby the
amp is bypassed and the T/R circuit feeds the input to the output. That
output is connected to the KAT500 input.  My antenna system, for various
bands, is connected to the three outputs.

Yes, if I just want to monitor a number of bands/frequencies I can press
the KAT500 mode button repeatedly until the unit is in BYPass so that it
won't attenuate receive signals. Unless the KAT500 is bypassed the
last tuning solution will be applied regardless of band or frequency
selected on the rig.

Then, for each frequency I want to monitor, I can then press the ANT button
on the KAT500 repeatedly until the correct antenna for the desired
frequency is selected. Depending on the memory or VFO band/frequency
selected it may be necessary to do this repeatedly. This will not work at
all in the case of scanning.

When done listening on various bands/frequencies and I want to return to
transmitting I have to press the KAT500 mode button repeatedly until the
unit is in MANual.  Then press the ANT button on the KAT500 repeatedly
until the correct antenna for the desired frequency is selected.  All off
this is doable but I'm looking for a more automatic system like that
built-in to the Elecraft equipment.

It appears that I need to design and build what I want.  I've taken up more
than enough forum time on this subject so it can be closed.

Thanks to All,

Ken
WA2LBI





On Fri, Jun 19, 2020 at 11:47 PM Dave  wrote:

> Ken,
>
> Can’t you simply press a couple of buttons on the KPA500 and the KAT500 to
> listen on a different band? No RF required. No tune required.
>
> 73,
> Dave N8AG
>
>
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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-19 Thread Dave
Ken,

Can’t you simply press a couple of buttons on the KPA500 and the KAT500 to 
listen on a different band? No RF required. No tune required.

73,
Dave N8AG

Sent from Mail for Windows 10

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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-19 Thread Ken Winterling
 John,

The radio, an IC-7610, and the fact that I use a HB band data cable to the
KPA500, was included in my original post.  The band data cable switches the
bands on the amp, except for WARC, but there is no communication to the
KAT500 so it remains on the last band/frequency and antenna selected at the
last application of RF.  The problem is that if I am just listening and
select another band the KAT500 will not move to the correct band and
antenna. This is not a problem if I intend to operate on the new band but
it is particularly inconvenient when simply switching between radio
memories to check for activity on stored frequencies which could be on any
band/antenna.  It also affects memory scanning for the same reason.  After
a band change the KAT500 is not on the correct band and antenna so the
received signal is greatly attenuated.

Elecraft transceivers "talk" to both the KPA500 and the KAT500 and keep
them updated with frequency changes so the KAT500 selects the proper tuning
and antenna for the frequency selected on the rig without transmitting.
I'm looking for a solution that mimics Elececraft's operation.  An Arduino
project has been suggested to me and I might need to learn to program one
to read Icom CI-V data and communicate with both the KPA500 and KAT500 if I
can't find any other solution.  Apparently I'm in a very small minority
that would find this feature useful.

As for using a Top Ten band decoder, or any other decoder, to switch the
antenna system external to the KAT500 would not help with the KAT500 issues
of remaining on the last RF-selected band and antenna.  Simply changing the
antenna external to the KAT500 does not help with the KAT500 still being
tuned to the wrong band and antenna and attenuating the received signal.

*Ken *
*WA2LBI *
*LG G6 *


-- Original message--
*From: *j...@kk9a.com
*Date: *Fri, Jun 19, 2020 09:55
*To: *elecraft@mailman.qth.net;
*Cc: *
*Subject:*Re: [Elecraft] Future of KPA500 & KAT500

The KAT500 only has three outputs which for me is insufficient and I
do not even operate WARC bands.  For the last couple of decades I have
used a Top Ten band decoder to switch antenna relay boxes. This worked
perfectly with my Yaesu line and now with my Elecraft K3S's.  You did
not mention your radio type in this post but if it has a band output
you could do the same and always be on the correct antenna.

John KK9A



Ken wa2lbi wrote:

I've had the amp and tuner for more than two years so I know about their RF
sensing. It works well when I'm changing bands with the intent of
transmitting.   However, as I said, that does not work when I am
changing bands on the rig to listen to different bands or scanning
different bands. If I am on 75M and want to check the conditions on 20M I
can't simply select 20M or a 20M memory and listen.  I have to transmit so
the KT500 will select the correct antenna.  If I'm not on a memorized
frequency in a KAT500 "bin" it will start tuning, taking up even more
time.

I'm looking for a solution that presets the KPA500 band, the KAT500 band,
and the KAT500 antenna without transmitting.  I believe an Elecraft
transceiver connected to the KPA500 and KAT500 can do that.

Ken
WA2LBI

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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-19 Thread john
The KAT500 only has three outputs which for me is insufficient and I  
do not even operate WARC bands.  For the last couple of decades I have  
used a Top Ten band decoder to switch antenna relay boxes. This worked  
perfectly with my Yaesu line and now with my Elecraft K3S's.  You did  
not mention your radio type in this post but if it has a band output  
you could do the same and always be on the correct antenna.


John KK9A



Ken wa2lbi wrote:

I've had the amp and tuner for more than two years so I know about their RF
sensing. It works well when I'm changing bands with the intent of
transmitting.   However, as I said, that does not work when I am
changing bands on the rig to listen to different bands or scanning
different bands. If I am on 75M and want to check the conditions on 20M I
can't simply select 20M or a 20M memory and listen.  I have to transmit so
the KT500 will select the correct antenna.  If I'm not on a memorized
frequency in a KAT500 "bin" it will start tuning, taking up even more
time.

I'm looking for a solution that presets the KPA500 band, the KAT500 band,
and the KAT500 antenna without transmitting.  I believe an Elecraft
transceiver connected to the KPA500 and KAT500 can do that.

Ken
WA2LBI

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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-18 Thread Ken Winterling
I've had the amp and tuner for more than two years so I know about their RF
sensing. It works well when I'm changing bands with the intent of
transmitting.   However, as I said, that does not work when I am
changing bands on the rig to listen to different bands or scanning
different bands. If I am on 75M and want to check the conditions on 20M I
can't simply select 20M or a 20M memory and listen.  I have to transmit so
the KT500 will select the correct antenna.  If I'm not on a memorized
frequency in a KAT500 "bin" it will start tuning, taking up even more
time.

I'm looking for a solution that presets the KPA500 band, the KAT500 band,
and the KAT500 antenna without transmitting.  I believe an Elecraft
transceiver connected to the KPA500 and KAT500 can do that.

Ken
WA2LBI





On Thu, Jun 18, 2020 at 2:22 PM Jim Brown  wrote:

> Hi Ken,
>
> All it takes to band switch both amp and tuner is a dit or a tap on the
> mic.
>
> 73, Jim K9YC
>
> On 6/18/2020 10:23 AM, Ken Winterling wrote:
> > There is no provision at all to communicate with the KAT500 so it
> > must RF sense to switch bands and select the correct antenna.  While this
> > works well when transmitting it is of no value when you are just
> listening
> > or scanning.
>
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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-18 Thread Jim Brown

Hi Ken,

All it takes to band switch both amp and tuner is a dit or a tap on the 
mic.


73, Jim K9YC

On 6/18/2020 10:23 AM, Ken Winterling wrote:

There is no provision at all to communicate with the KAT500 so it
must RF sense to switch bands and select the correct antenna.  While this
works well when transmitting it is of no value when you are just listening
or scanning.


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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-18 Thread Ken K6MR
Before the KPA1500 was released, I ran two KPA500s in parallel.  On the high 
bands, a K3 would not drive both amps to 500 watts.  The NX1P mod enabled a 
full 1000 W out on all bands.

Ken K6MR

From: Phil Hystad via Elecraft<mailto:elecraft@mailman.qth.net>
Sent: Thursday, June 18, 2020 10:28
To: Gmail - George<mailto:gdanne...@gmail.com>
Cc: Elecraft@mailman.qth.net<mailto:Elecraft@mailman.qth.net>
Subject: Re: [Elecraft] Future of KPA500 & KAT500

Why would you modify your KPA500 and risk warranty, repair, and clean signals 
for a mere 1/2 S-Unit at best?



> On Jun 18, 2020, at 9:27 AM, Gmail - George  wrote:
>
> Paula Keezer NX1P modified a KPA500 to allow it to be driven to about 500
> watts by a KX3.
> She published it - but I can not find it on the web.
> The mod increased the gain by less than 3 db (seems I recall 2.something).
> You would need the 12 to 15 watts to drive it to about 500 watts.
>
> The modification involved removing the input pad and modifying the feed back
> loop to the microprocessor.
> I thought about doing the mod to be able to run a net with my KX3 if my K3
> quit.
> I have a KXPA and decided not to do the modification.
> I can just remove my KX3 & KXPA from my truck if I ever need a backup to
> drive the KPA500. Probably 10 minutes work and find the bag of portable
> cables.
>
> BTW - Ms. Keezer's modification was very detailed and she had many cautions
> regarding doing the modification.
> It defiantly was not a matter of "cutting a jumper" to remove the input pad.
> You need remove the pad parts and change the number of turns in a
> transformer.
>
> Defiantly would void the warranty and make factory repairs iffy depending on
> Elecraft's policies.
> Other manufacturers  I have worked with would restore the amp to factory
> while repairing it.
>
> As a ham you are not limited to the 15 db gain restriction - the
> manufacturer is but not you.
>
> 73
> George AI4VZ
>
> -Original Message-----
> From: Charlie T
> Sent: Thursday, June 18, 2020 9:06 AM
> To: 'Nr4c'
> Cc: Elecraft@mailman.qth.net
> Subject: Re: [Elecraft] Future of KPA500 & KAT500
>
> Isn't there some sort of "jumper" or ???, that will increase the gain to
> something other than the ridiculous and prohibitive +13 dB figure,  for
> "international" (wink-wink) sales, sorta like the "MARS" mod in almost all
> radios these days?
>
> 99.9% of the chicken band users today are happy with their 5 watt radios.
> However, that restrictive and useless  +13 gain law does NOTHING to stop the
> REALLY big guns on 27.025 who typically run amps using tubes that have
> HANDLES on them!
> (I've personally seen channel 6 mobile set-ups running power in excess of 25
> kilowatts.)
>
> 73, Charlie k3ICH
>
>
>
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net  On
> Behalf Of Nr4c
> Sent: Wednesday, June 17, 2020 3:14 PM
> To: Paul Gacek 
> Cc: Don Putnick ; Elecraft Reflector
> 
> Subject: Re: [Elecraft] Future of KPA500 & KAT500
>
> The KAT500 has three antenna out ports. It only needs one In so the KPA500
> needs only one out port.
>
> As for the 10 W in and 500 out idea.  That is prohibited by law. They’re
> only allowed to sell an amp with max gain of 13dB.
>
> Sent from my iPhone
> ...nr4c. bill
>
>
>
> __
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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-18 Thread Mike Harris via Elecraft
The mod applies to the ability to increase the sensitivity (gain) of the 
amp by bypassing the input attenuator so that it can be driven to a 
useful power output with a lower power exciter. There isn't any 
suggestion that the amp should be driven beyond its normal power level. 
Hence unless the exciter was dirty, clean signals is not part of the 
equation.


Regards,

Mike VP8NO


 18/06/2020 14:25, Phil Hystad via Elecraft wrote:

Why would you modify your KPA500 and risk warranty, repair, and clean signals 
for a mere 1/2 S-Unit at best?




On Jun 18, 2020, at 9:27 AM, Gmail - George  wrote:

Paula Keezer NX1P modified a KPA500 to allow it to be driven to about 500
watts by a KX3.
She published it - but I can not find it on the web.
The mod increased the gain by less than 3 db (seems I recall 2.something).
You would need the 12 to 15 watts to drive it to about 500 watts.

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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-18 Thread Phil Hystad via Elecraft
Why would you modify your KPA500 and risk warranty, repair, and clean signals 
for a mere 1/2 S-Unit at best?



> On Jun 18, 2020, at 9:27 AM, Gmail - George  wrote:
> 
> Paula Keezer NX1P modified a KPA500 to allow it to be driven to about 500 
> watts by a KX3.
> She published it - but I can not find it on the web.
> The mod increased the gain by less than 3 db (seems I recall 2.something). 
> You would need the 12 to 15 watts to drive it to about 500 watts.
> 
> The modification involved removing the input pad and modifying the feed back 
> loop to the microprocessor.
> I thought about doing the mod to be able to run a net with my KX3 if my K3 
> quit.
> I have a KXPA and decided not to do the modification.
> I can just remove my KX3 & KXPA from my truck if I ever need a backup to 
> drive the KPA500. Probably 10 minutes work and find the bag of portable 
> cables.
> 
> BTW - Ms. Keezer's modification was very detailed and she had many cautions 
> regarding doing the modification.
> It defiantly was not a matter of "cutting a jumper" to remove the input pad. 
> You need remove the pad parts and change the number of turns in a 
> transformer.
> 
> Defiantly would void the warranty and make factory repairs iffy depending on 
> Elecraft's policies.
> Other manufacturers  I have worked with would restore the amp to factory 
> while repairing it.
> 
> As a ham you are not limited to the 15 db gain restriction - the 
> manufacturer is but not you.
> 
> 73
> George AI4VZ
> 
> -Original Message- 
> From: Charlie T
> Sent: Thursday, June 18, 2020 9:06 AM
> To: 'Nr4c'
> Cc: Elecraft@mailman.qth.net
> Subject: Re: [Elecraft] Future of KPA500 & KAT500
> 
> Isn't there some sort of "jumper" or ???, that will increase the gain to 
> something other than the ridiculous and prohibitive +13 dB figure,  for 
> "international" (wink-wink) sales, sorta like the "MARS" mod in almost all 
> radios these days?
> 
> 99.9% of the chicken band users today are happy with their 5 watt radios.
> However, that restrictive and useless  +13 gain law does NOTHING to stop the 
> REALLY big guns on 27.025 who typically run amps using tubes that have 
> HANDLES on them!
> (I've personally seen channel 6 mobile set-ups running power in excess of 25 
> kilowatts.)
> 
> 73, Charlie k3ICH
> 
> 
> 
> 
> -----Original Message-
> From: elecraft-boun...@mailman.qth.net  On 
> Behalf Of Nr4c
> Sent: Wednesday, June 17, 2020 3:14 PM
> To: Paul Gacek 
> Cc: Don Putnick ; Elecraft Reflector 
> 
> Subject: Re: [Elecraft] Future of KPA500 & KAT500
> 
> The KAT500 has three antenna out ports. It only needs one In so the KPA500 
> needs only one out port.
> 
> As for the 10 W in and 500 out idea.  That is prohibited by law. They’re 
> only allowed to sell an amp with max gain of 13dB.
> 
> Sent from my iPhone
> ...nr4c. bill
> 
> 
> 
> __
> Elecraft mailing list
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> 
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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-18 Thread Ken Winterling
I own a KPA500 and KAT500.  Both work very well with my Icom IC-7610 but
operation could be improved if they could communicate with the Icom CI-V
bus.  I do not own a KPA1500 but from my research I see it can communicate
directly with the Icom CI-V bus to switch the amp AND the internal
tuner/antenna selector when connected to an Icom rig without any RF being
transmitted. The KPA500 and KAT500 have no such CI-V capability.

The Icom band data connection on the amp works but does not address the WARC
bands. There is no provision at all to communicate with the KAT500 so it
must RF sense to switch bands and select the correct antenna.  While this
works well when transmitting it is of no value when you are just listening
or scanning.  The KAT500 will remain on the last band and antenna where RF
was present.  For example, my KAT500 has a 75M dipole on ANT 1 and a
40M-10M fan dipole on ANT 2.  If I am listening on 75M and then switch
bands to 20M the KPA500 will switch bands using the band data cable I built
(but not on the WARC bands...) but the KAT500 remains on ANT 1 and tuned
for the 75M frequency.  Of course, this seriously attenuates the 20M
signals.

I would like to see a plug-in product that connects to the IC-7610 (or
other Icom), the KPA500, and the KAT500 that reads the Icom CI-V bus
commands and sets BOTH the KPA500 and KAT500 to the correct band without
transmitting, and in the case of the KAT500, also selects the proper
antenna for the frequency.  Since the KAT500 antenna is assigned per band
in the KAT500 programming I believe the KAT500 would only need to know the
frequency then it would select the proper antenna from its internal memory.

If such an Icom CI-V plug-in device already exists that addresses BOTH the
KPA500 and KAT500 issues outlined above please direct me to the product(s).

Thanks & 73,

Ken
WA2LBI





On Thu, Jun 18, 2020 at 12:29 PM Gmail - George  wrote:

> Paula Keezer NX1P modified a KPA500 to allow it to be driven to about 500
> watts by a KX3.
> She published it - but I can not find it on the web.
> The mod increased the gain by less than 3 db (seems I recall 2.something).
> You would need the 12 to 15 watts to drive it to about 500 watts.
>
> The modification involved removing the input pad and modifying the feed
> back
> loop to the microprocessor.
> I thought about doing the mod to be able to run a net with my KX3 if my K3
> quit.
> I have a KXPA and decided not to do the modification.
> I can just remove my KX3 & KXPA from my truck if I ever need a backup to
> drive the KPA500. Probably 10 minutes work and find the bag of portable
> cables.
>
> BTW - Ms. Keezer's modification was very detailed and she had many
> cautions
> regarding doing the modification.
> It defiantly was not a matter of "cutting a jumper" to remove the input
> pad.
> You need remove the pad parts and change the number of turns in a
> transformer.
>
> Defiantly would void the warranty and make factory repairs iffy depending
> on
> Elecraft's policies.
> Other manufacturers  I have worked with would restore the amp to factory
> while repairing it.
>
> As a ham you are not limited to the 15 db gain restriction - the
> manufacturer is but not you.
>
> 73
> George AI4VZ
>
> -Original Message-----
> From: Charlie T
> Sent: Thursday, June 18, 2020 9:06 AM
> To: 'Nr4c'
> Cc: Elecraft@mailman.qth.net
> Subject: Re: [Elecraft] Future of KPA500 & KAT500
>
> Isn't there some sort of "jumper" or ???, that will increase the gain to
> something other than the ridiculous and prohibitive +13 dB figure,  for
> "international" (wink-wink) sales, sorta like the "MARS" mod in almost all
> radios these days?
>
> 99.9% of the chicken band users today are happy with their 5 watt radios.
> However, that restrictive and useless  +13 gain law does NOTHING to stop
> the
> REALLY big guns on 27.025 who typically run amps using tubes that have
> HANDLES on them!
> (I've personally seen channel 6 mobile set-ups running power in excess of
> 25
> kilowatts.)
>
> 73, Charlie k3ICH
>
>
>
>
> -----Original Message-
> From: elecraft-boun...@mailman.qth.net 
> On
> Behalf Of Nr4c
> Sent: Wednesday, June 17, 2020 3:14 PM
> To: Paul Gacek 
> Cc: Don Putnick ; Elecraft Reflector
> 
> Subject: Re: [Elecraft] Future of KPA500 & KAT500
>
> The KAT500 has three antenna out ports. It only needs one In so the KPA500
> needs only one out port.
>
> As for the 10 W in and 500 out idea.  That is prohibited by law. They’re
> only allowed to sell an amp with max gain of 13dB.
>
> Sent from my iPhone
> ...nr4c. bill
>
>
>
> __
> Elecr

Re: [Elecraft] Future of KPA500 & KAT500

2020-06-18 Thread Gmail - George
Paula Keezer NX1P modified a KPA500 to allow it to be driven to about 500 
watts by a KX3.
She published it - but I can not find it on the web.
The mod increased the gain by less than 3 db (seems I recall 2.something). 
You would need the 12 to 15 watts to drive it to about 500 watts.

The modification involved removing the input pad and modifying the feed back 
loop to the microprocessor.
I thought about doing the mod to be able to run a net with my KX3 if my K3 
quit.
I have a KXPA and decided not to do the modification.
I can just remove my KX3 & KXPA from my truck if I ever need a backup to 
drive the KPA500. Probably 10 minutes work and find the bag of portable 
cables.

BTW - Ms. Keezer's modification was very detailed and she had many cautions 
regarding doing the modification.
It defiantly was not a matter of "cutting a jumper" to remove the input pad. 
You need remove the pad parts and change the number of turns in a 
transformer.

Defiantly would void the warranty and make factory repairs iffy depending on 
Elecraft's policies.
Other manufacturers  I have worked with would restore the amp to factory 
while repairing it.

As a ham you are not limited to the 15 db gain restriction - the 
manufacturer is but not you.

73
George AI4VZ

-Original Message- 
From: Charlie T
Sent: Thursday, June 18, 2020 9:06 AM
To: 'Nr4c'
Cc: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] Future of KPA500 & KAT500

Isn't there some sort of "jumper" or ???, that will increase the gain to 
something other than the ridiculous and prohibitive +13 dB figure,  for 
"international" (wink-wink) sales, sorta like the "MARS" mod in almost all 
radios these days?

99.9% of the chicken band users today are happy with their 5 watt radios.
However, that restrictive and useless  +13 gain law does NOTHING to stop the 
REALLY big guns on 27.025 who typically run amps using tubes that have 
HANDLES on them!
(I've personally seen channel 6 mobile set-ups running power in excess of 25 
kilowatts.)

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Nr4c
Sent: Wednesday, June 17, 2020 3:14 PM
To: Paul Gacek 
Cc: Don Putnick ; Elecraft Reflector 

Subject: Re: [Elecraft] Future of KPA500 & KAT500

The KAT500 has three antenna out ports. It only needs one In so the KPA500 
needs only one out port.

As for the 10 W in and 500 out idea.  That is prohibited by law. They’re 
only allowed to sell an amp with max gain of 13dB.

Sent from my iPhone
...nr4c. bill



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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-18 Thread Mark Goldberg
NX1P created a modification that is legal for an individual Ham to do
at your own risk. It is more complicated than just a jumper. This is
the only site I could find it at:

https://docplayer.net/22608412-Kpa-500-modifications.html

73,

Mark
W7MLG

On Thu, Jun 18, 2020 at 8:34 AM Charlie T  wrote:
>
> Isn't there some sort of "jumper" or ???, that will increase the gain to 
> something other than the ridiculous and prohibitive +13 dB figure,  for 
> "international" (wink-wink) sales, sorta like the "MARS" mod in almost all 
> radios these days?
>
> 99.9% of the chicken band users today are happy with their 5 watt radios.
> However, that restrictive and useless  +13 gain law does NOTHING to stop the 
> REALLY big guns on 27.025 who typically run amps using tubes that have 
> HANDLES on them!
> (I've personally seen channel 6 mobile set-ups running power in excess of 25 
> kilowatts.)
>
> 73, Charlie k3ICH
>
>
>
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net  On 
> Behalf Of Nr4c
> Sent: Wednesday, June 17, 2020 3:14 PM
> To: Paul Gacek 
> Cc: Don Putnick ; Elecraft Reflector 
> 
> Subject: Re: [Elecraft] Future of KPA500 & KAT500
>
> The KAT500 has three antenna out ports. It only needs one In so the KPA500 
> needs only one out port.
>
> As for the 10 W in and 500 out idea.  That is prohibited by law. They’re only 
> allowed to sell an amp with max gain of 13dB.
>
> Sent from my iPhone
> ...nr4c. bill
>
>
>
> __
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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-18 Thread Charlie T
Isn't there some sort of "jumper" or ???, that will increase the gain to 
something other than the ridiculous and prohibitive +13 dB figure,  for 
"international" (wink-wink) sales, sorta like the "MARS" mod in almost all 
radios these days?

99.9% of the chicken band users today are happy with their 5 watt radios. 
However, that restrictive and useless  +13 gain law does NOTHING to stop the 
REALLY big guns on 27.025 who typically run amps using tubes that have HANDLES 
on them!
(I've personally seen channel 6 mobile set-ups running power in excess of 25 
kilowatts.)

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Nr4c
Sent: Wednesday, June 17, 2020 3:14 PM
To: Paul Gacek 
Cc: Don Putnick ; Elecraft Reflector 

Subject: Re: [Elecraft] Future of KPA500 & KAT500

The KAT500 has three antenna out ports. It only needs one In so the KPA500 
needs only one out port. 

As for the 10 W in and 500 out idea.  That is prohibited by law. They’re only 
allowed to sell an amp with max gain of 13dB. 

Sent from my iPhone
...nr4c. bill

 

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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread Eric Swartz
Hi Don,

We plan to keep selling and supporting both the KPA500 and KAT500 - Sales 
remain strong for both. They are also compatible with the K4 and  most other HF 
radios. :-)

73,
Eric
elecraft.com
_..._

> On Jun 16, 2020, at 9:50 PM, Don Putnick  wrote:
> 
> With the sunset of the K3S, what are the plans for the future of the KPA500
> and KAT500? Enquiring minds want to know.
> 73 Don NA6Z
> __
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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread Wes

My whole home station runs on one 120VAC 20A circuit.

https://www.qrz.com/db/N7WS  for stats.

Wes  N7WS

On 6/17/2020 1:58 PM, Jim Brown wrote:

On 6/17/2020 1:44 PM, Josh Fiden wrote:

Also nice to have an amp you can run from 120v if needed.


Yes. The KPA500 and KAT500 see a lot of use for 7QP and CQP expeditions, and 
for 6M grid expeditions.


73, Jim K9YC 


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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread Jim Brown

On 6/17/2020 1:44 PM, Josh Fiden wrote:

Also nice to have an amp you can run from 120v if needed.


Yes. The KPA500 and KAT500 see a lot of use for 7QP and CQP expeditions, 
and for 6M grid expeditions.


73, Jim K9YC
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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread Josh Fiden
Also nice to have an amp you can run from 120v if needed. 

73
Josh W6XU

Sent from my mobile device

> On Jun 17, 2020, at 11:47 AM, Wayne Burdick  wrote:
> 
> The KPA500 and KAT500 are proven QRO products that we'll be shipping for 
> many years to come.
> 
> 73,
> Wayne
> N6KR
> 
> 
>> On Jun 17, 2020, at 11:40 AM, Grant Youngman  wrote:
>> 
>> I think a 500W-class amp is a good thing to keep in the product line, 
>> whether it’s the current KPA500 or KPA500A, or whatever.  Not everyone 
>> necessarily wants or needs a KPA1500.  The 500 watt amp is right in line 
>> with vintage gear like the 30L-1/SB200 — both VERY popular in their day (and 
>> still widely used) for good reason.  I could care less about either the size 
>> of the cabinet or less than an S-unit.
>> 
>> Grant NQ5T
>> 
 On Jun 17, 2020, at 2:10 PM, Don Putnick  wrote:
>>> 
>>> I guess I should have been more specific. Will they keep them or will they
>>> discontinue them? They started as part of the K3 line. Didn't intend to
>>> mean upgrade. 73 Don NA6Z
>>> 
 On Tue, Jun 16, 2020 at 9:47 PM Don Putnick  wrote:
>>> 
 With the sunset of the K3S, what are the plans for the future of the
 KPA500 and KAT500? Enquiring minds want to know.
 73 Don NA6Z
 
>> 
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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread stephen shearer

There has been discussion...  on Elecraft K4 group.
73, steve

On 5/8/20 11:40 AM, N6KR wrote:> Hi Stephen,
>
> This would be cool, but it's a substantial amount of design work. 
We've talked about it, but that's about as far as we've gotten. It might 
depend on demand.

>
> 73,
> Wayne
> N6KR
>
>
>> On May 8, 2020, at 8:38 AM, stephen shearer 
 wrote:

>>
>> Wayne,
>>
>> Speaking of the KAT500, KPA500, and the K4...
>>
>> Are there plans to combine the KAT500 and KPA500 into one box 
matching the K4 ??
>> It would be nice for portable and those that don't want 1500W'sThere 
has been discussion

>>
>> 73, steve WB3LGC
>>
>> On 5/8/20 10:40 AM, N6KR wrote:
>>> Hi Brian,
>>> This is certainly possible, and a very good idea. We'll add it to 
the list of potential features.

>>> Please describe what you'd like to see on such an information display.
>>> 73,
>>> Wayne
>>> N6KR
 On May 7, 2020, at 6:34 PM, Brian  wrote:

 Will the K4 be able to display the operation of KAT500 and KPA 500 
when they are remote to the K4, i.e. if they are fairly close but not 
visible to the operator.


>>
>>
>>
>
>
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>

On 6/17/20 3:57 PM, Lou W0FK wrote:

I doubt Elecraft wold spend money to re-engineer the KPA500/KAT500, invest in
new boards, cabinetry, manuals, production/assembly changes, etc. The pair
works well as is, and costs zero R or production dollars to continue them
as they are.

Besides, they'll fit the new K5 profile when it comes out. ;-)

73, Lou W0FK



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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread Wes

15 dB

Wes  N7WS

On 6/17/2020 12:13 PM, Nr4c wrote:

The KAT500 has three antenna out ports. It only needs one In so the KPA500 
needs only one out port.

As for the 10 W in and 500 out idea.  That is prohibited by law. They’re only 
allowed to sell an amp with max gain of 13dB.

Sent from my iPhone
...nr4c. bill


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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread Lou W0FK
I doubt Elecraft wold spend money to re-engineer the KPA500/KAT500, invest in
new boards, cabinetry, manuals, production/assembly changes, etc. The pair
works well as is, and costs zero R or production dollars to continue them
as they are. 

Besides, they'll fit the new K5 profile when it comes out. ;-)

73, Lou W0FK



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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread Josh Fiden
I like combining them. And update to a lightweight switching power supply. 
Should be less expensive to produce and eliminates dealing with 120 vs 230, 
transformer taps, voltage sag under load. 

I have them already and this adds no additional functionality, except easier 
when I shuffle things around in the shack. Work perfectly as they are so no new 
purchase for me. 

73
Josh W6XU

Sent from my mobile device

> On Jun 17, 2020, at 6:58 AM, j...@kk9a.com wrote:
> 
> How about combining them into a single enclosure?
> 
> John KK9A
> 
> 
> Bill Steffey NY9H wrote:
> 
> what could they do that would  update them  make them taller
> like the K4 
> 
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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread Walter Underwood
On Jun 17, 2020, at 12:27 PM, Bert  wrote:
> 
> Maybe it's time to change the law!
> 
> The rest of the world is suffering because of an outdated law in the US!
> 
> Bert VE3NR

Elecraft is free to sell export versions of their amps without that limit, so 
the rest of the world is just fine.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)
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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread Rick Bates, NK7I
Having both plus the KPA1500 (same height as the K4), that would be a 
challenge without a major rework.  Not just in squeezing it in, but 
still allow for adequate cooling.


If they choose to go down that path, I'd hope they keep the third 
antenna port (only two on the KPA1500).


As for their long term plans; we know they listen but are sly in 
responding until it's time to announce.


73,
Rick NK7I


On 6/17/2020 7:19 AM, hawley, charles j jr wrote:

Hey, that's a thought. Reinvent them to match the height of the K4 and maybe 
include the tuner inside the KPA500 box.

Chuck Hawley
  c-haw...@illinois.edu

  Amateur Radio, KE9UW
  aka Jack, BMW Motorcycles

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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread Bert

Maybe it's time to change the law!

The rest of the world is suffering because of an outdated law in the US!

Bert VE3NR





On 2020-06-17 15:13, Nr4c wrote:

The KAT500 has three antenna out ports. It only needs one In so the KPA500 
needs only one out port.

As for the 10 W in and 500 out idea.  That is prohibited by law. They’re only 
allowed to sell an amp with max gain of 13dB.

Sent from my iPhone
...nr4c. bill



On Jun 17, 2020, at 12:18 PM, Paul Gacek via Elecraft 
 wrote:

I think it depends on the use case. I’d rather see the KPA500 v2 made lighter 
and a third antenna port added.

The real icing on the cake would be 10w in and 500w out but I won’t touch that 
topic too much!

This would make it a better “portable” amp.

Paul
W6PNG/M0SNA
www.nomadic.blog



On Jun 17, 2020, at 8:39 AM, hawley, charles j jr  wrote:

Seems like they are just as applicable to the K4 as well.

Chuck Hawley
c-haw...@illinois.edu

Amateur Radio, KE9UW
aka Jack, BMW Motorcycles


From: elecraft-boun...@mailman.qth.net  on behalf 
of Don Putnick 
Sent: Tuesday, June 16, 2020 11:47 PM
To: Elecraft Reflector 
Subject: [Elecraft] Future of KPA500 & KAT500

With the sunset of the K3S, what are the plans for the future of the KPA500
and KAT500? Enquiring minds want to know.
73 Don NA6Z
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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread Nr4c
The KAT500 has three antenna out ports. It only needs one In so the KPA500 
needs only one out port. 

As for the 10 W in and 500 out idea.  That is prohibited by law. They’re only 
allowed to sell an amp with max gain of 13dB. 

Sent from my iPhone
...nr4c. bill


> On Jun 17, 2020, at 12:18 PM, Paul Gacek via Elecraft 
>  wrote:
> 
> I think it depends on the use case. I’d rather see the KPA500 v2 made 
> lighter and a third antenna port added.
> 
> The real icing on the cake would be 10w in and 500w out but I won’t touch 
> that topic too much!
> 
> This would make it a better “portable” amp.
> 
> Paul
> W6PNG/M0SNA 
> www.nomadic.blog
> 
> 
>> On Jun 17, 2020, at 8:39 AM, hawley, charles j jr  
>> wrote:
>> 
>> Seems like they are just as applicable to the K4 as well.
>> 
>> Chuck Hawley
>> c-haw...@illinois.edu
>> 
>> Amateur Radio, KE9UW
>> aka Jack, BMW Motorcycles
>> 
>> 
>> From: elecraft-boun...@mailman.qth.net  on 
>> behalf of Don Putnick 
>> Sent: Tuesday, June 16, 2020 11:47 PM
>> To: Elecraft Reflector 
>> Subject: [Elecraft] Future of KPA500 & KAT500
>> 
>> With the sunset of the K3S, what are the plans for the future of the KPA500
>> and KAT500? Enquiring minds want to know.
>> 73 Don NA6Z
>> __
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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread Wayne Burdick
The KPA500 and KAT500 are proven QRO products that we'll be shipping for many 
years to come.

73,
Wayne
N6KR


> On Jun 17, 2020, at 11:40 AM, Grant Youngman  wrote:
> 
> I think a 500W-class amp is a good thing to keep in the product line, whether 
> it’s the current KPA500 or KPA500A, or whatever.  Not everyone necessarily 
> wants or needs a KPA1500.  The 500 watt amp is right in line with vintage 
> gear like the 30L-1/SB200 — both VERY popular in their day (and still widely 
> used) for good reason.  I could care less about either the size of the 
> cabinet or less than an S-unit.
> 
> Grant NQ5T
> 
>> On Jun 17, 2020, at 2:10 PM, Don Putnick  wrote:
>> 
>> I guess I should have been more specific. Will they keep them or will they
>> discontinue them? They started as part of the K3 line. Didn't intend to
>> mean upgrade. 73 Don NA6Z
>> 
>> On Tue, Jun 16, 2020 at 9:47 PM Don Putnick  wrote:
>> 
>>> With the sunset of the K3S, what are the plans for the future of the
>>> KPA500 and KAT500? Enquiring minds want to know.
>>> 73 Don NA6Z
>>> 
> 
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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread Grant Youngman
I think a 500W-class amp is a good thing to keep in the product line, whether 
it’s the current KPA500 or KPA500A, or whatever.  Not everyone necessarily 
wants or needs a KPA1500.  The 500 watt amp is right in line with vintage gear 
like the 30L-1/SB200 — both VERY popular in their day (and still widely used) 
for good reason.  I could care less about either the size of the cabinet or 
less than an S-unit.

Grant NQ5T

> On Jun 17, 2020, at 2:10 PM, Don Putnick  wrote:
> 
> I guess I should have been more specific. Will they keep them or will they
> discontinue them? They started as part of the K3 line. Didn't intend to
> mean upgrade. 73 Don NA6Z
> 
> On Tue, Jun 16, 2020 at 9:47 PM Don Putnick  wrote:
> 
>> With the sunset of the K3S, what are the plans for the future of the
>> KPA500 and KAT500? Enquiring minds want to know.
>> 73 Don NA6Z
>> 

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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread Don Putnick
I guess I should have been more specific. Will they keep them or will they
discontinue them? They started as part of the K3 line. Didn't intend to
mean upgrade. 73 Don NA6Z

On Tue, Jun 16, 2020 at 9:47 PM Don Putnick  wrote:

> With the sunset of the K3S, what are the plans for the future of the
> KPA500 and KAT500? Enquiring minds want to know.
> 73 Don NA6Z
>
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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread Paul Gacek via Elecraft
I think it depends on the use case. I’d rather see the KPA500 v2 made lighter 
and a third antenna port added.

The real icing on the cake would be 10w in and 500w out but I won’t touch that 
topic too much!

This would make it a better “portable” amp.

Paul
W6PNG/M0SNA 
www.nomadic.blog


> On Jun 17, 2020, at 8:39 AM, hawley, charles j jr  
> wrote:
> 
> Seems like they are just as applicable to the K4 as well.
> 
> Chuck Hawley
> c-haw...@illinois.edu
> 
> Amateur Radio, KE9UW
> aka Jack, BMW Motorcycles
> 
> 
> From: elecraft-boun...@mailman.qth.net  on 
> behalf of Don Putnick 
> Sent: Tuesday, June 16, 2020 11:47 PM
> To: Elecraft Reflector 
> Subject: [Elecraft] Future of KPA500 & KAT500
> 
> With the sunset of the K3S, what are the plans for the future of the KPA500
> and KAT500? Enquiring minds want to know.
> 73 Don NA6Z
> __
> Elecraft mailing list
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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread Morgan Bailey
Charles, your thinking on pairing the amp with tuner inside had great merit
and housing it inside of a K4 enclosure. Heck man that is the best idea I
have heard. I hope Elecraft takes the move on that especially now since
they already have the format for the case made and only have to change the
front and back plates and G2G.

73,
Morgan Bailey NJ8M

On Wed, Jun 17, 2020 at 9:21 AM hawley, charles j jr 
wrote:

> Hey, that's a thought. Reinvent them to match the height of the K4 and
> maybe include the tuner inside the KPA500 box.
>
> Chuck Hawley
>  c-haw...@illinois.edu
>
>  Amateur Radio, KE9UW
>  aka Jack, BMW Motorcycles
>
> 
> From: elecraft-boun...@mailman.qth.net 
> on behalf of Bill Steffey NY9H 
> Sent: Wednesday, June 17, 2020 7:54 AM
> To: elecraft@mailman.qth.net 
> Subject: Re: [Elecraft] Future of KPA500 & KAT500
>
> what could they do that would  update them  make them taller
> like the K4 
>
> On 6/17/2020 12:47 AM, Don Putnick wrote:
> > With the sunset of the K3S, what are the plans for the future of the
> KPA500
> > and KAT500? Enquiring minds want to know.
> > 73 Don NA6Z
> > __
> > Elecraft mailing list
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>
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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread hawley, charles j jr
Hey, that's a thought. Reinvent them to match the height of the K4 and maybe 
include the tuner inside the KPA500 box.

Chuck Hawley
 c-haw...@illinois.edu

 Amateur Radio, KE9UW
 aka Jack, BMW Motorcycles


From: elecraft-boun...@mailman.qth.net  on 
behalf of Bill Steffey NY9H 
Sent: Wednesday, June 17, 2020 7:54 AM
To: elecraft@mailman.qth.net 
Subject: Re: [Elecraft] Future of KPA500 & KAT500

what could they do that would  update them  make them taller
like the K4 

On 6/17/2020 12:47 AM, Don Putnick wrote:
> With the sunset of the K3S, what are the plans for the future of the KPA500
> and KAT500? Enquiring minds want to know.
> 73 Don NA6Z
> __
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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread hawley, charles j jr
Seems like they are just as applicable to the K4 as well.

Chuck Hawley
 c-haw...@illinois.edu

 Amateur Radio, KE9UW
 aka Jack, BMW Motorcycles


From: elecraft-boun...@mailman.qth.net  on 
behalf of Don Putnick 
Sent: Tuesday, June 16, 2020 11:47 PM
To: Elecraft Reflector 
Subject: [Elecraft] Future of KPA500 & KAT500

With the sunset of the K3S, what are the plans for the future of the KPA500
and KAT500? Enquiring minds want to know.
73 Don NA6Z
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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread john

How about combining them into a single enclosure?

John KK9A


Bill Steffey NY9H wrote:

what could they do that would  update them  make them taller
like the K4 

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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread RICHARD Martin
Make a 12 VDC version to assist disaster communications.

Dick KN6AA

On Wed, Jun 17, 2020, 06:06 Mike Harris via Elecraft <
elecraft@mailman.qth.net> wrote:

> I read it as what would their future availability be, nothing to do with
> updating.
>
> Not uncommon to read about the KPA500 being paired with other
> transceiver brands.
>
> Regards,
>
> Mike VP8NO
>
> On 17/06/2020 09:54, Bill Steffey NY9H wrote:
> > what could they do that would  update them  make them taller
> > like the K4 
> >
> > On 6/17/2020 12:47 AM, Don Putnick wrote:
> >> With the sunset of the K3S, what are the plans for the future of the
> >> KPA500
> >> and KAT500? Enquiring minds want to know.
> >> 73 Don NA6Z
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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread Mike Harris via Elecraft
I read it as what would their future availability be, nothing to do with 
updating.


Not uncommon to read about the KPA500 being paired with other 
transceiver brands.


Regards,

Mike VP8NO

On 17/06/2020 09:54, Bill Steffey NY9H wrote:
what could they do that would  update them  make them taller 
like the K4 


On 6/17/2020 12:47 AM, Don Putnick wrote:
With the sunset of the K3S, what are the plans for the future of the 
KPA500

and KAT500? Enquiring minds want to know.
73 Don NA6Z

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Re: [Elecraft] Future of KPA500 & KAT500

2020-06-17 Thread Bill Steffey NY9H
what could they do that would  update them  make them taller 
like the K4 


On 6/17/2020 12:47 AM, Don Putnick wrote:

With the sunset of the K3S, what are the plans for the future of the KPA500
and KAT500? Enquiring minds want to know.
73 Don NA6Z
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[Elecraft] Future of KPA500 & KAT500

2020-06-16 Thread Don Putnick
With the sunset of the K3S, what are the plans for the future of the KPA500
and KAT500? Enquiring minds want to know.
73 Don NA6Z
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