[Elecraft] KPA1500 enhancement request

[David F. Reed]

It would be very nice if the KPA1500 would remember on a per band basis 
whether the mode was STBY or OPER the way it remember if the ATU is IN 
or BYP; to an outsider, this seems like not a big ask and it would make 
overdriving the amp easier to avoid as there are some bands I don't use 
it on...


Thanks for considering it & 73

Dave, W5SV

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[Elecraft] KPA1500 Enhancement

[Paul Christensen]

>"Of course, this flexibility comes at a price- The Power Genius is
significantly more expensive than the KPA1500"

And for the majority of users, that's an expensive convenience for the
feature of a transceiver selection switch that I think is best managed
external to the amp.  With the growing popularity of remote operation,
there's an opportunity for more than just one vendor to produce a line of
Ethernet-controlled RF switches in various x(in) to y(out) matrix options.
In this case, a 2x1 switch would serve the purpose without burdening the
rest of us with a feature we may not want to pay in the KPA1500.

N4CC and I share a remote site in north Florida, on the FL/GA state line.
Our current HF amplifier has a built-in 4-port antenna switch.  While we
would like the KPA1500 to have 4, or even 6 output connectors, that
convenience is probably best managed with an external RF switch that links
to the KPA1500 (and/or K3) for automatic antenna selection on a per-band
basis.Although we could likely use DDUtil or other such 3rd-party
control programs, hopefully Elecraft will consider a line of external RF
switches as an option with the amp.

Paul, W9AC  



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Re: [Elecraft] KPA1500 Enhancement

[Jim Brown]

I have one of these switches, and put it on the bench with my VNWA 
vector network analyzer before installing it. Isolation is greater than 
100 dB between radios for any combination of selected antennas, WITH ALL 
OUTPUTS UNTERMINATED, and only the two radio ports terminated by the 50 
ohm source and 50 ohm load of the VNWA.  This is a worst case condition. 
Return loss is also quite low up to 6M.


The switch offers many control options, from pulls to ground or to V+ or 
BCD to the far more sophisticated Antenna Genius controller, so it's 
sufficiently versatile that it can be used in almost any station. I'm 
controlling mine with the "pull to ground" control output of a 5B4AGN 
TXBPF filter set, which gets its input from the K3 AUX out band data. 
Which control logic for the 8x2 is selected by a DIP switch, and wiring 
is to a 15-pin DB connector.


This is an excellent switch, and by far the best I've measured. As a 
point of reference, isolation for the Array Solutions 6x2 is about -55 
dB, and return loss gets unpleasantly high above 15M. The 403A 6x2 is in 
the range of 75 dB isolation.


I haven't measured any other switches.

73, Jim K9YC

On Fri,4/28/2017 12:05 PM, Barry Baines wrote:

I currently have the ability to remotely select my antennas for the K3 and Flex 
using 403A’s Antenna Genius 8x2 antenna switch (it has a LAN connection) that I 
can control through my network connection to the shack.  The Antenna Genius 
allows only one active RF input per antenna port, which provides some degree of 
protection to both transceivers.  Thus, I will eventually have two radios both 
connected to the same amplifier operating as needed and then use the Antenna 
Genius to determine which radio is connected to which antenna (Dummy 
load/KT-36/End Fed Half Wave).



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Re: [Elecraft] KPA1500 Enhancement

[Barry Baines]

John:

> On Apr 28, 2017, at 1:44 PM, j...@kk9a.com wrote:
> 
> With no interest in SO2R, I wonder why you would want a K3 and K3S both
> connected to the same amp.


Having two radio inputs on the KPA1500 or any amplifier, particularly if the RF 
exciter port selection is done either 1) automatically through RF Sensing or 2) 
remote selection would be a very cool feature for stations that are remote 
operated.

I currently use the K3/KPA500/KAT500 remotely for the vast majority of my 
contacts because my primary residence is over 1,800 miles from my HF station.  
I also have a second radio (Flex 6000 series) that I’d love to be able to 
connect to a remotely controlled amplifier and be select as the input once 
SmartSDR v2.0 is released that will provide the ability the utilize the 
transceiver remotely. Currently,  I don’t have an amplifier attached to the 
Flex that can be remoted, so my only option at the moment is to operate that 
transceiver ‘barefoot’.  I manage the K3 through a  K3-Mini/0 with Remote Rig 
1258, the KPA500 through the Remote Rig 1216H, and the rotor (Green Heron 
Controller) through a second Remote Rig 1216H.

I have put down a deposit for the new PowerGenius-XL amplifier offered through 
FlexRadio Systems not because I plan to operate SO2R but because it will accept 
two exciter inputs, will allow remote configuration through LAN, and not cause 
problems for the amplifier.  I currently have the ability to remotely select my 
antennas for the K3 and Flex using 403A’s Antenna Genius 8x2 antenna switch (it 
has a LAN connection) that I can control through my network connection to the 
shack.  The Antenna Genius allows only one active RF input per antenna port, 
which provides some degree of protection to both transceivers.  Thus, I will 
eventually have two radios both connected to the same amplifier operating as 
needed and then use the Antenna Genius to determine which radio is connected to 
which antenna (Dummy load/KT-36/End Fed Half Wave).

Of course, this flexibility comes at a price— The Power Genius is significantly 
more expensive than the KPA1500 and uses a different architecture (e.g. two RF 
source inputs and two outputs to separate antenna ports which allows operation 
on two different bands with rapid band switching).   

Given Wayne’s comments below that there isn’t space to incorporate two RF 
inputs into the KPA1500, someone else may consider offering such a feature that 
could be integrated into the KPA1500 architecture.  However, a 3rd party 
product adds to station complexity and space needed on the operating desk 
versus having it incorporated directly into a RF amplifier.  Where high 
reliability is essential for remote operation where you know “it works” and the 
status of which radio is actually operating through the amplifier is clearly 
delineated, I’d be more reluctant to depend upon a 3rd party “add-on” versus 
having the capability built into the amplifier with the ability to properly 
monitor equipment status.


FWIW,

Barry Baines, WD4ASW



> Regardless, keeping the amp physically small
> and lightweight is a great selling point.  External antenna switches are
> readily available. For me, one input and one output is perfectly fine.
> 
> John KK9A
> 
> From Wayne n6kr m
> Fri Apr 28 12:35:45 EDT 2017
> 
> Hi Tom,
> 
> I don’t believe we have enough rear panel or internal space in the KPA1500
> to accommodate a two-rig switch. That said, if you (or anyone else) wants
> to use a home-rolled or commercial rig/antenna switch, or an SO2R box,
> we’ll try to find a way to help with integration.
> 
> For example, the KPA1500’s front-panel “ANTENNA” switch has a tap function
> but not a hold function. We could create a hold function that would select
> between two rigs via an external relay. There are various possibilities
> for control that I’ll be happy to discuss with you if you’re interested.
> 
> 73,
> Wayne
> N6KR
> 
> 
> 
>> On Apr 28, 2017, at 6:45 AM, Thomas Donohue  wrote:
>> 
>> Hi to all:
>> 
>> I'm changing the topic back to my original question, which has not been
> answered. Are there plans or thoughts to add a second RF input to the
> amp similar to the two RF inputs on the Yaesu VL1000? I'm not interested
> in SO2R, I am interested in feeding my K3 and K3S into a KPA1500, much
> the same as I'm currently doing with the VL1000.
>> 
>> Best 73,
>> Tom/W1QU
> 
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[Elecraft] KPA1500 Enhancement

[j...@kk9a.com]

With no interest in SO2R, I wonder why you would want a K3 and K3S both
connected to the same amp. Regardless, keeping the amp physically small
and lightweight is a great selling point.  External antenna switches are
readily available. For me, one input and one output is perfectly fine.

John KK9A

From Wayne n6kr m
Fri Apr 28 12:35:45 EDT 2017

Hi Tom,

I don’t believe we have enough rear panel or internal space in the KPA1500
to accommodate a two-rig switch. That said, if you (or anyone else) wants
to use a home-rolled or commercial rig/antenna switch, or an SO2R box,
we’ll try to find a way to help with integration.

For example, the KPA1500’s front-panel “ANTENNA” switch has a tap function
but not a hold function. We could create a hold function that would select
between two rigs via an external relay. There are various possibilities
for control that I’ll be happy to discuss with you if you’re interested.

73,
Wayne
N6KR



> On Apr 28, 2017, at 6:45 AM, Thomas Donohue  wrote:
>
> Hi to all:
>
> I'm changing the topic back to my original question, which has not been
answered. Are there plans or thoughts to add a second RF input to the
amp similar to the two RF inputs on the Yaesu VL1000? I'm not interested
in SO2R, I am interested in feeding my K3 and K3S into a KPA1500, much
the same as I'm currently doing with the VL1000.
>
> Best 73,
> Tom/W1QU

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Re: [Elecraft] KPA1500 Enhancement

[Wayne Burdick]

Hi Tom,

I don’t believe we have enough rear panel or internal space in the KPA1500 to 
accommodate a two-rig switch. That said, if you (or anyone else) wants to use a 
home-rolled or commercial rig/antenna switch, or an SO2R box, we’ll try to find 
a way to help with integration. 

For example, the KPA1500’s front-panel “ANTENNA” switch has a tap function but 
not a hold function. We could create a hold function that would select between 
two rigs via an external relay. There are various possibilities for control 
that I’ll be happy to discuss with you if you’re interested. 

73,
Wayne
N6KR



> On Apr 28, 2017, at 6:45 AM, Thomas Donohue  wrote:
> 
> Hi to all:
> 
> I'm changing the topic back to my original question, which has not been 
> answered. Are there plans or thoughts to add a second RF input to the amp 
> similar to the two RF inputs on the Yaesu VL1000? I'm not interested in SO2R, 
> I am interested in feeding my K3 and K3S into a KPA1500, much the same as I'm 
> currently doing with the VL1000.
> 
> Best 73,
> Tom/W1QU
> 
> 
> Sent from my iPad
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[Elecraft] KPA1500 Enhancement

[Thomas Donohue]

Hi to all:

I'm changing the topic back to my original question, which has not been 
answered. Are there plans or thoughts to add a second RF input to the amp 
similar to the two RF inputs on the Yaesu VL1000? I'm not interested in SO2R, I 
am interested in feeding my K3 and K3S into a KPA1500, much the same as I'm 
currently doing with the VL1000.

Best 73,
Tom/W1QU


Sent from my iPad
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Re: [Elecraft] KPA1500 Enhancement

[Erik Basilier]

Doing the switching outside the amplifier box may be an easier and more 
economical way to achieve that isolation. There may be further economy as well 
as simplification to be had if this switching hardware is combined as a single 
product with the antenna selection switch (2 antennas out of 6 etc). While some 
may be happy running without tuner, many would want duplicated tuners external 
to the shared amplifier. Incorporating separate tuners would not impose 
additional RF switching requirements, but possibly some additional 
considerations relating to the control scheme. Of course, the user would want 
to be able to purchase the amp without built-in tuner.

73.
Erik K7TV

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Igor 
Sokolov
Sent: Thursday, April 27, 2017 5:00 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA1500 Enhancement

May I mention that for SO2R in the same box the isolation should be in order of 
80db for  1500 w power level.

This is not that easy to obtain.

73, Igor UA9CDC


27.04.2017 7:59, Erik Basilier пишет:
> Of course, in an SO2R scenario where the shared amplifier alternates 
> between two different bands with every transmission, a shared ATU 
> would exercise the relays a lot. Separate tuners might be needed in 
> order to avoid the relays wearing out.
>
> 73,
> Erik K7TV
>
> -Original Message-
> From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of 
> Matthew Cook
> Sent: Wednesday, April 26, 2017 5:45 PM
> To: Thomas Donohue <tomdo...@gmail.com>
> Cc: Elecraft Reflector <Elecraft@mailman.qth.net>
> Subject: Re: [Elecraft] KPA1500 Enhancement
>
> If that were to happen then adding a second 15-way connector at the 
> same time to said module to allow two K3/K3s to drive the one amp 
> through each respective antenna input and matched output would start 
> this amp towards the "basic" SO2R path.  From there a smart 2x6 
> antenna switching unit some well designed BPF filters and your well on 
> your way.  The rest of the magic is then just firmware (says he that 
> writes said firmware every day) within the upgraded processor the KPA1500 has 
> been blessed with.
>
> I'm fingers crossed..
>
> 73
>
> Matthew
> VK5ZM
>
> On 26 April 2017 at 22:37, Thomas Donohue <tomdo...@gmail.com> wrote:
>
>> Hi to all:
>>
>> Wayne or Eric. Are there any plans or thoughts about adding a second 
>> RF input to the amp, similar to what the Yaesu VL-1000 has?
>>
>> Best 73,
>> Tom/W1QU
>>
>>
>> Sent from my iPad
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Re: [Elecraft] KPA1500 Enhancement

[Igor Sokolov]

May I mention that for SO2R in the same box the isolation should be in 
order of 80db for  1500 w power level.


This is not that easy to obtain.

73, Igor UA9CDC


27.04.2017 7:59, Erik Basilier пишет:

Of course, in an SO2R scenario where the shared amplifier alternates between
two different bands with every transmission, a shared ATU would exercise the
relays a lot. Separate tuners might be needed in order to avoid the relays
wearing out.

73,
Erik K7TV

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
Matthew Cook
Sent: Wednesday, April 26, 2017 5:45 PM
To: Thomas Donohue <tomdo...@gmail.com>
Cc: Elecraft Reflector <Elecraft@mailman.qth.net>
Subject: Re: [Elecraft] KPA1500 Enhancement

If that were to happen then adding a second 15-way connector at the same
time to said module to allow two K3/K3s to drive the one amp through each
respective antenna input and matched output would start this amp towards the
"basic" SO2R path.  From there a smart 2x6 antenna switching unit some well
designed BPF filters and your well on your way.  The rest of the magic is
then just firmware (says he that writes said firmware every day) within the
upgraded processor the KPA1500 has been blessed with.

I'm fingers crossed..

73

Matthew
VK5ZM

On 26 April 2017 at 22:37, Thomas Donohue <tomdo...@gmail.com> wrote:


Hi to all:

Wayne or Eric. Are there any plans or thoughts about adding a second
RF input to the amp, similar to what the Yaesu VL-1000 has?

Best 73,
Tom/W1QU


Sent from my iPad
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Re: [Elecraft] KPA1500 Enhancement

[Roy Koeppe]

Re:


Question:

"Can the internal tuner be completely bypassed like the K3S can do with 
its tuner?"



I see a bypass button on front panel.

73,  Roy   K6XK

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Re: [Elecraft] KPA1500 Enhancement

[brian]

Question:
Can the internal tuner be completely bypassed like the K3S can do with 
its tuner?

Brian/K3KO

On 4/27/2017 2:59 AM, Erik Basilier wrote:

Of course, in an SO2R scenario where the shared amplifier alternates between
two different bands with every transmission, a shared ATU would exercise the
relays a lot. Separate tuners might be needed in order to avoid the relays
wearing out.

73,
Erik K7TV

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
Matthew Cook
Sent: Wednesday, April 26, 2017 5:45 PM
To: Thomas Donohue <tomdo...@gmail.com>
Cc: Elecraft Reflector <Elecraft@mailman.qth.net>
Subject: Re: [Elecraft] KPA1500 Enhancement

If that were to happen then adding a second 15-way connector at the same
time to said module to allow two K3/K3s to drive the one amp through each
respective antenna input and matched output would start this amp towards the
"basic" SO2R path.  From there a smart 2x6 antenna switching unit some well
designed BPF filters and your well on your way.  The rest of the magic is
then just firmware (says he that writes said firmware every day) within the
upgraded processor the KPA1500 has been blessed with.

I'm fingers crossed..

73

Matthew
VK5ZM

On 26 April 2017 at 22:37, Thomas Donohue <tomdo...@gmail.com> wrote:


Hi to all:

Wayne or Eric. Are there any plans or thoughts about adding a second
RF input to the amp, similar to what the Yaesu VL-1000 has?

Best 73,
Tom/W1QU


Sent from my iPad
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Re: [Elecraft] KPA1500 Enhancement

[Jim Brown]

Stubs, optimally applied, are an excellent and low cost substitute for 
high power bandpass filters. A properly placed 2-stub filter using a 
decent RG8/213 typically provides 60 dB of attenuation at the second 
harmonic, that in addition to the suppression provided by the 
amplifier's output network.


I've settled for 5B4AGN's W3NQN implementation of filter sets 
conservatively rated for 200W between exciter and power amp. That takes 
care of protecting the receiver and also killing any phase noise the 
other radio is producing.


In my experience with SO2R and other multi-transmitter setups and all 
K3s, killing the amplifier's second harmonic mostly matters between 80 
and 40 CW, and 40 and 20 CW,  because the harmonic lands in the same 
part of the higher band where we want to operate.


73, Jim K9YC

On Wed,4/26/2017 10:50 PM, Matthew Cook wrote:

So time to get back to working on the 1500W W3NQN filter designs... and the
high power paperwork requirements from our regulatory body to run that sort
of power level... sigh.



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Re: [Elecraft] KPA1500 Enhancement

[Matthew Cook]

Now there's a good point, have to make sure the antennas are well matched
and put the tuner into bypass.

So time to get back to working on the 1500W W3NQN filter designs... and the
high power paperwork requirements from our regulatory body to run that sort
of power level... sigh.

73

Matthew
VK5ZM

On 27 April 2017 at 12:29, Erik Basilier <ebasil...@cox.net> wrote:

> Of course, in an SO2R scenario where the shared amplifier alternates
> between
> two different bands with every transmission, a shared ATU would exercise
> the
> relays a lot. Separate tuners might be needed in order to avoid the relays
> wearing out.
>
> 73,
> Erik K7TV
>
> -Original Message-
> From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
> Matthew Cook
> Sent: Wednesday, April 26, 2017 5:45 PM
> To: Thomas Donohue <tomdo...@gmail.com>
> Cc: Elecraft Reflector <Elecraft@mailman.qth.net>
> Subject: Re: [Elecraft] KPA1500 Enhancement
>
> If that were to happen then adding a second 15-way connector at the same
> time to said module to allow two K3/K3s to drive the one amp through each
> respective antenna input and matched output would start this amp towards
> the
> "basic" SO2R path.  From there a smart 2x6 antenna switching unit some well
> designed BPF filters and your well on your way.  The rest of the magic is
> then just firmware (says he that writes said firmware every day) within the
> upgraded processor the KPA1500 has been blessed with.
>
> I'm fingers crossed..
>
> 73
>
> Matthew
> VK5ZM
>
> On 26 April 2017 at 22:37, Thomas Donohue <tomdo...@gmail.com> wrote:
>
> > Hi to all:
> >
> > Wayne or Eric. Are there any plans or thoughts about adding a second
> > RF input to the amp, similar to what the Yaesu VL-1000 has?
> >
> > Best 73,
> > Tom/W1QU
> >
> >
> > Sent from my iPad
> > __
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> > 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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> > list: http://www.qsl.net/donate.html Message delivered to
> > vk...@bistre.net
> >
> __
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Re: [Elecraft] KPA1500 Enhancement

[Erik Basilier]

Of course, in an SO2R scenario where the shared amplifier alternates between
two different bands with every transmission, a shared ATU would exercise the
relays a lot. Separate tuners might be needed in order to avoid the relays
wearing out.

73,
Erik K7TV

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
Matthew Cook
Sent: Wednesday, April 26, 2017 5:45 PM
To: Thomas Donohue <tomdo...@gmail.com>
Cc: Elecraft Reflector <Elecraft@mailman.qth.net>
Subject: Re: [Elecraft] KPA1500 Enhancement

If that were to happen then adding a second 15-way connector at the same
time to said module to allow two K3/K3s to drive the one amp through each
respective antenna input and matched output would start this amp towards the
"basic" SO2R path.  From there a smart 2x6 antenna switching unit some well
designed BPF filters and your well on your way.  The rest of the magic is
then just firmware (says he that writes said firmware every day) within the
upgraded processor the KPA1500 has been blessed with.

I'm fingers crossed..

73

Matthew
VK5ZM

On 26 April 2017 at 22:37, Thomas Donohue <tomdo...@gmail.com> wrote:

> Hi to all:
>
> Wayne or Eric. Are there any plans or thoughts about adding a second 
> RF input to the amp, similar to what the Yaesu VL-1000 has?
>
> Best 73,
> Tom/W1QU
>
>
> Sent from my iPad
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net Please help support this email 
> list: http://www.qsl.net/donate.html Message delivered to 
> vk...@bistre.net
>
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Re: [Elecraft] KPA1500 Enhancement

[Harry Yingst via Elecraft]

I had bad the suggestion for a switch box that would allow using the kpa1500 or 
the kpa500 with multiple radios a few days ago.
Hopefuly they are looking into pooducing one.
I have one I built but would prefer one the had the aux data switching in it.



 Original message 
From: Matthew Cook <vk...@bistre.net> 
Date: 2017-04-26  8:44 PM  (GMT-05:00) 
To: Thomas Donohue <tomdo...@gmail.com> 
Cc: Elecraft Reflector <Elecraft@mailman.qth.net> 
Subject: Re: [Elecraft] KPA1500 Enhancement 

If that were to happen then adding a second 15-way connector at the same
time to said module to allow two K3/K3s to drive the one amp through each
respective antenna input and matched output would start this amp towards
the "basic" SO2R path.  From there a smart 2x6 antenna switching unit some
well designed BPF filters and your well on your way.  The rest of the magic
is then just firmware (says he that writes said firmware every day) within
the upgraded processor the KPA1500 has been blessed with.

I'm fingers crossed..

73

Matthew
VK5ZM

On 26 April 2017 at 22:37, Thomas Donohue <tomdo...@gmail.com> wrote:

> Hi to all:
>
> Wayne or Eric. Are there any plans or thoughts about adding a second RF
> input to the amp, similar to what the Yaesu VL-1000 has?
>
> Best 73,
> Tom/W1QU
>
>
> Sent from my iPad
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to vk...@bistre.net
>
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Re: [Elecraft] KPA1500 Enhancement

[Matthew Cook]

If that were to happen then adding a second 15-way connector at the same
time to said module to allow two K3/K3s to drive the one amp through each
respective antenna input and matched output would start this amp towards
the "basic" SO2R path.  From there a smart 2x6 antenna switching unit some
well designed BPF filters and your well on your way.  The rest of the magic
is then just firmware (says he that writes said firmware every day) within
the upgraded processor the KPA1500 has been blessed with.

I'm fingers crossed..

73

Matthew
VK5ZM

On 26 April 2017 at 22:37, Thomas Donohue  wrote:

> Hi to all:
>
> Wayne or Eric. Are there any plans or thoughts about adding a second RF
> input to the amp, similar to what the Yaesu VL-1000 has?
>
> Best 73,
> Tom/W1QU
>
>
> Sent from my iPad
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to vk...@bistre.net
>
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Re: [Elecraft] KPA1500 Enhancement

[GaryK9GS]

This would be a  great feature


73,
Gary K9GS
 Original message From: Thomas Donohue <tomdo...@gmail.com> 
Date: 4/26/17  8:07 AM  (GMT-06:00) To: Elecraft@mailman.qth.net Subject: 
[Elecraft] KPA1500 Enhancement 
Hi to all:

Wayne or Eric. Are there any plans or thoughts about adding a second RF input 
to the amp, similar to what the Yaesu VL-1000 has? 

Best 73,
Tom/W1QU


Sent from my iPad
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[Elecraft] KPA1500 Enhancement

[Thomas Donohue]

Hi to all:

Wayne or Eric. Are there any plans or thoughts about adding a second RF input 
to the amp, similar to what the Yaesu VL-1000 has? 

Best 73,
Tom/W1QU


Sent from my iPad
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