[Elecraft] R: K3S QST Article

[glcazzola]

Wayne, if IMD can be improved by reducing first amp power, 12-13 watt out to 
10watt out, by a firmware modification, can‎ you  make this choice?
I wouldnt like to make works on my new K3S...
Ian IK4EWX

Invio eseguito dallo smartphone BlackBerry 10.
  Messaggio originale  
Da: Wayne Burdick
Inviato: lunedì 17 ottobre 2016 02:26
A: ab2tc
Cc: elecraft@mailman.qth.net
Oggetto: Re: [Elecraft] K3S QST Article

Knut,

The K3S as originally shipped does not have a design flaw. Like virtually all 
12-V-class transceivers using currently available MOSFETs, it was already right 
around -30 dBc or better, worst-case, for 3rd-order IMD. We simply found a way 
to make it better by a few dB, and we're offering to make this upgrade at no 
charge.

73,
Wayne
N6KR




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Re: [Elecraft] Speakers - Optimal Frequency Range?

[Dave Cole]

On Sun, 2016-10-16 at 20:47 -0800, Edward R Cole wrote:
> As many of you know I suffer extreme hearing loss (especially high 
> freqs), so Don's comment really hit home for me.  Several years ago I 
> debated buying a home theater system with prof. speakers as I 
> wondered if I could discern the improvement.  I found that having 
> very linear response from 50-Hz to 20KHz improved understanding of 
> voice on the TV as well as enjoyable music.

Edward,

My last hearing test, I asked for and received a copy of my hearing
results.  I used to listen to CW at 650 Hz., and noticed that my speed
was slowing down as my hearing got worse over time.  

I noted a big dip in my hearing response at 600 Hz. from the results of
the hearing test.  I then changed the spot frequency from 650 to 540,
which is not nearly as depressed, I copy CW MUCH faster as a result of
that change.   

I in essence, have used the K3 EQ to adjust for my hearing deficiencies,
producing something much flatter between 300 to 3000 Hz. than I would be
hearing without the EQ.  

Over all this has really helped both my CW and SSB receive ability.  

-- 
73's, and thanks,
Dave (NK7Z)
For software/hardware reviews see:
http://www.nk7z.net

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[Elecraft] Sold - K3-100

[Jim Stockwell]

The K3-100 has been sold.

 

I recently upgraded to a new K3S so I am selling my old K3-100.  It is in
excellent physical and working condition and from a non-smoking home.
PayPal Preferred (no fee).  Includes CONUS Shipping.  The price is $2,100.
Please contact me via w...@arrl.net Thanks!  Jim,
W6KC

 

K3-100 (Serial #7531) - $2,100 

KAT3 K3 ATU

KRX3 K3 2nd Receiver

KDVR3 K3 Digital voice module

KXV3A K3 TX ant, IF Out & Xvrtr Interface

KFL3A-2.7K 2.7 kHz, 5-pole standard filters in both Receivers

KPCA-F Power Cable

Original Cost $3,500+

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Re: [Elecraft] Speakers - Optimal Frequency Range?

[Dave Cole]

On Sun, 2016-10-16 at 23:32 -0400, Don Wilhelm wrote:
> Dave,
> 
> While what you say (using the speaker as a filter) may have been 
> advantageous in the days when receiver selectivity was "broad as a
> barn 
> door".  I don't think that applies today for receivers have adequate 
> selectivity to do that filtering job.  Some low end receivers that do 
> not provide adequate filtering may benefit from a peaked speaker, but 
> that is not true of any of the Elecraft receivers.
> 
> Besides, unless your "filtering" speaker matches the filtering
> provided 
> by your headphones, there will be a vast difference when switching 
> between the speaker and the 'phones.
> 
> In modern days, a flat speaker response in the 300 to 3000 Hz range
> is 
> the best for communications.  If the speaker response is greater than 
> that range, it will not matter because the receiver will not produce 
> audio much beyond that 300 to 3000 Hz range.
> 
> To me, the goal is a flat speaker response in the range that the 
> receiver produces audio.  The fact that the speaker is also flat
> beyond 
> that range is of no consequence unless that same speaker is also used 
> for Hi-Fi listening.
> 
> 73,
> Don W3FPR

Hi Don,
I am saying that not using the speaker as part of the total
communications system is not effective use of hardware, having a speaker
that is flat beyond the audio output range of the radio is useless and
just runs the cost of the radio up.

You are assuming that receivers are all 300-3000, they are not, else
ESSB would never have come about.  We are not running broadcast
stations, we are running communications links.

Best communications is achieved using something close to 300-3000.  See:
http://www.w0btu.com/ssb_audio-weak_signal.html

In reality, it really would not matter if one put a high end stereo
speaker on the radio, assuming the radio were limited to 300-3000, (as
it should be), save a bit of amp noise leaking through...  

So, as I said in my original post, it is the most efficient use of the
hardware is to use a limited response speaker.  No need for high end
stereo speakers on a K3...  That said, I may put on some better speakers
on my K3 because in the long run it is a bit less stressful on my
ears...  :)


 
-- 
73's, and thanks,
Dave (NK7Z)
For software/hardware reviews see:
http://www.nk7z.net

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Re: [Elecraft] Speakers - Optimal Frequency Range?

[Edward R Cole]

As many of you know I suffer extreme hearing loss (especially high 
freqs), so Don's comment really hit home for me.  Several years ago I 
debated buying a home theater system with prof. speakers as I 
wondered if I could discern the improvement.  I found that having 
very linear response from 50-Hz to 20KHz improved understanding of 
voice on the TV as well as enjoyable music.


Later, I found choosing the flat response program in my hearing aids 
also provided the crispest voices and better understanding.


Long ago I bought a pair of Sony stereo headsets for listening to 
weak signals on ham radio.  Appears that also was a good move.


So even if the audio output is restricted to 300-4000 Hz the speaker 
reproduces that faithfully.


My new blue-tooth capable hearing aids have much wider freq response 
as I am hearing a wider range from low to high freq.  The plus is my 
iphone connects directly to my hearing aids for best hearing in 
public (and that half is private).  I have yet to try using bluetooth 
with my K3.  Let you know how that sounds, later.


73, Ed - KL7UW
PS: my KX3 audio will be connected to the truck speakers via sync; 
more on that, later.


From: Don Wilhelm 
To: MaverickNH , elecraft@mailman.qth.net
Subject: Re: [Elecraft] Speakers - Optimal Frequency Range?
Message-ID: <0ac70af8-6d68-a819-8b21-60c05fdab...@embarqmail.com>
Content-Type: text/plain; charset=windows-1252; format=flowed

Bret,

In my opinion, a speaker should not "color" the audio response of the
receiver.

While it is true that there is not normally much response above 4000Hz
from a ham transceiver, the speaker should not be the limiting factor.

IMHO, the best characteristic of a speaker is the flatness of its
response curve rather than its frequency range.  A speaker with a flat
response will allow you to hear the transceiver "as it should be"
without distortion. So my vote is for "High-Fidelity" speakers.

73,
Don W3FPR

73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
dubus...@gmail.com

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Re: [Elecraft] Speakers - Optimal Frequency Range?

[Martin Sole]

It's been doing the rounds for years in one form or another. I remember 
trying one from a 70's or 80's ARRL H book. a 45 degree PVC pipe bend 
of suitable diameter, 3 or 4 inches. Suitably fixed to the top of the 
radio, blu-tak or whatever. Paint to match. Very useful to focus the sound.


I'm sure a suitably embellished matching "K-pipe", available soon no 
doubt, will be even better ;-)



Martin, HS0ZED



On 17/10/2016 06:36, Mark via Elecraft wrote:

Re:   "Back in the K2 days, many hams folded some stiff card or paper to make such a 
deflector to tape to the top of their rigs."

That idea was highlighted again in May 2016 QST Hints & Kinks, pg 63.

Mark,
KE6BB
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Re: [Elecraft] Speakers - Optimal Frequency Range?

[Mark via Elecraft]

Re:   "Back in the K2 days, many hams folded some stiff card or paper to make 
such a deflector to tape to the top of their rigs."

That idea was highlighted again in May 2016 QST Hints & Kinks, pg 63.

Mark,
KE6BB
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Re: [Elecraft] Speakers - Optimal Frequency Range?

[Don Wilhelm]

Dave,

While what you say (using the speaker as a filter) may have been 
advantageous in the days when receiver selectivity was "broad as a barn 
door".  I don't think that applies today for receivers have adequate 
selectivity to do that filtering job.  Some low end receivers that do 
not provide adequate filtering may benefit from a peaked speaker, but 
that is not true of any of the Elecraft receivers.


Besides, unless your "filtering" speaker matches the filtering provided 
by your headphones, there will be a vast difference when switching 
between the speaker and the 'phones.


In modern days, a flat speaker response in the 300 to 3000 Hz range is 
the best for communications.  If the speaker response is greater than 
that range, it will not matter because the receiver will not produce 
audio much beyond that 300 to 3000 Hz range.


To me, the goal is a flat speaker response in the range that the 
receiver produces audio.  The fact that the speaker is also flat beyond 
that range is of no consequence unless that same speaker is also used 
for Hi-Fi listening.


73,
Don W3FPR

On 10/16/2016 8:17 PM, Dave Cole wrote:

On Sun, 2016-10-16 at 18:28 -0400, Don Wilhelm wrote:

Bret,

In my opinion, a speaker should not "color" the audio response of the
receiver.


Au contraire, the speaker is as much a part of the radio as the
synthesizer, or the APF is.  We are not dealing with a high end stereo
here, (where the speakers should never color things, but frequently do),
we are dealing with the terminal end of a communications link, which can
be several thousand miles long, and as such, the speaker is just another
filter/device to reproduce the sound.  Filters by nature color things,
hence the speaker must color the sound if we are to use all parts as
efficiently as possible.


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Re: [Elecraft] Speakers - Optimal Frequency Range?

[Ron D'Eau Claire]

Take a stiff card, book or even your hand and hold it at a 45 degree angle
behind the speaker and against the top of the K3 so the sound is bounced
toward you and notice the difference. It's dramatic!

Back in the K2 days, many hams folded some stiff card or paper to make such
a deflector to tape to the top of their rigs. (Most of us, like me, used
headphones so the issue was moot). 

73 Ron AC7AC

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim
Brown
Sent: Sunday, October 16, 2016 3:18 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Speakers - Optimal Frequency Range?

What matters is smooth (flat) response from about 200 Hz to about 3 kHz as
heard at the ear of the operator. The laws of physics dictate that
uniformity of high frequency response is limited by diaphragm size -- the
larger the speaker, the worse it sounds off axis. The speaker built into the
K3 is a nice small one, so it has pretty good off axis response, but it
faces straight up. In most shacks, the highs bounce off of nearby surfaces
to get to the listener. A front-facing loudspeaker will have flatter
response, but takes up more space on the operating desk.

73, Jim K9YC

On Sun,10/16/2016 3:02 PM, MaverickNH wrote:
> So what's the verdict, High-Fidelity or HAM-Fidelity?


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Re: [Elecraft] Speakers - Optimal Frequency Range?

[Walter Underwood]

Converting electrical power to mechanical power is fraught with peril. One way 
to get excellent performance from 300 to 3000 Hertz is to have very good 
performance from 30 to 30,000 Hertz. Or something like that. We want to be in 
the safely linear portion of the speaker.

That said, I just bought some cheap Pyle speakers (two for $20) and am trying 
them out. Because hams are cheap. But I really wanted some of the old Radio 
Shack small two-way speakers. I have one of those on my Lowe HF-150 Europa and 
it is just fine, thank you.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Oct 16, 2016, at 5:17 PM, Dave Cole  wrote:
> 
> On Sun, 2016-10-16 at 18:28 -0400, Don Wilhelm wrote:
>> Bret,
>> 
>> In my opinion, a speaker should not "color" the audio response of the 
>> receiver.
> 
> Au contraire, the speaker is as much a part of the radio as the
> synthesizer, or the APF is.  We are not dealing with a high end stereo
> here, (where the speakers should never color things, but frequently do),
> we are dealing with the terminal end of a communications link, which can
> be several thousand miles long, and as such, the speaker is just another
> filter/device to reproduce the sound.  Filters by nature color things,
> hence the speaker must color the sound if we are to use all parts as
> efficiently as possible.
> 
> -- 
> 73's, and thanks,
> Dave (NK7Z)
> For software/hardware reviews see:
> http://www.nk7z.net
> 
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Re: [Elecraft] Power output per mode?

[George Kidder]

Fred OM,

Don't have the KPA500, so that's moot.

I agree that one problem is the lack of any indication of the power 
which will be produced.  The only way I know of is to rotate the "power" 
knob - THEN the power indication shows, but not otherwise.


Guess nothing is perfect, is it?

George, W3HBM


On 10/16/2016 7:47 PM, Fred Jensen wrote:
Well, technically it is saved per band per KPA500 state, if you have 
one.  I'm pretty sure it isn't also saved per mode.


I've never been at ease with memory functions that simply save the 
last state without leaving a message somewhere on the display what the 
current saved state is.  When the "Power for KPA state" feature came 
out, there were several times when I faulted the KPA on the first dit 
because the power was at 100W.  I know it was pilot error but I began 
to check it just to be sure.


For a remote station with multiple operators in various places on the 
planet, I really do *always* check the power settings before 
transmitting.


73,

Fred K6DGW
- Sparks NV DM09dn

- Northern California Contest Club
- CU in the Cal QSO Party 7-8 Oct 2017
- www.cqp.org

On 10/16/2016 3:38 PM, George Kidder wrote:

I suspect that most of us like to reduce our power output on digital
modes, so the continuous carrier doesn't overheat something.  At present
(as far as I can figure out) the power output setting is saved per band
but not per mode, so that changing from CW to digital on the same band
requires remembering to reduce power manually, and remembering to put it
back when digital modes are no longer being used.

As an addition to the long wish list: How about saving the power output
setting per band AND per mode?  Or is there some technical reason why
this is not possible?

73
George, W3HBM


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Re: [Elecraft] K3S QST Article

[Wayne Burdick]

Knut,

The K3S as originally shipped does not have a design flaw. Like virtually all 
12-V-class transceivers using currently available MOSFETs, it was already right 
around -30 dBc or better, worst-case, for 3rd-order IMD. We simply found a way 
to make it better by a few dB, and we're offering to make this upgrade at no 
charge.

73,
Wayne
N6KR




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Re: [Elecraft] Speakers - Optimal Frequency Range?

[Dave Cole]

On Sun, 2016-10-16 at 18:28 -0400, Don Wilhelm wrote:
> Bret,
> 
> In my opinion, a speaker should not "color" the audio response of the 
> receiver.

Au contraire, the speaker is as much a part of the radio as the
synthesizer, or the APF is.  We are not dealing with a high end stereo
here, (where the speakers should never color things, but frequently do),
we are dealing with the terminal end of a communications link, which can
be several thousand miles long, and as such, the speaker is just another
filter/device to reproduce the sound.  Filters by nature color things,
hence the speaker must color the sound if we are to use all parts as
efficiently as possible.

-- 
73's, and thanks,
Dave (NK7Z)
For software/hardware reviews see:
http://www.nk7z.net

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Re: [Elecraft] Speakers - Optimal Frequency Range?

[Fred Jensen]

The Hallicrafters bass reflex speaker cabinet for the SX-28 had fabulous 
flat response ... down to the deep bass if you drove it with that.  It 
also employed a fairly large speaker and was big ... very big, and took 
a few watts [8 peak, I think] to drive it.


In the late 50's, in college and on a limited budget, it was common for 
students to use 5 or 6" speakers in tight cubic boxes made of 3/4" 
plywood and stuffed with some wall insulation for the then-new stereo 
records.  They sounded pretty good and doubled as supports for the 
ubiquitous cinder-block shelving.  My roomie and I painted ours black.


Why wouldn't one of those work?

73,

Fred K6DGW
Sparks NV USA
Washoe County DM09dn

On 10/16/2016 4:56 PM, Joe Subich, W4TV wrote:


While I agree that the speakers should not color the transceiver,
excessive low frequency response on receive is as wasteful as excessive
low frequency response on transmit.  In that regard, I'm very happy
with a pair of Pyle PCB3 (3" Mini Cube Bookshelf Speakers) - one left
and one right.  They are specified for 90 Hz - 18 KHz and I *still*
use the maximum RX EQ cut on the 50 and 100 Hz bands.

Speaker response above 5 - 6 KHz is moot since the K3/K3S includes a
4.5 KHz "brick wall" lowpass filter in the headphone/speaker channel.

73,

   ... Joe, W4TV


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Re: [Elecraft] Speakers - Optimal Frequency Range?

[Dave Cole]

300-3000 flat will work best...

On Sun, 2016-10-16 at 15:02 -0700, MaverickNH wrote:
> So aside from speakers that match the design of a transceiver, there
> seems to
> be some difference in philosophy about frequency range. Palstar touts
> a
> 55-8000 Hz range while the Phonema and Elecraft speakers spec at 100-
> 2
> Hz. Palstar says sound above 8kHz is non-communication noise.
> 
> So what's the verdict, High-Fidelity or HAM-Fidelity?
> 
> Bret/N4SRN 
> 
> 
> 
> --
> View this message in context: http://elecraft.365791.n2.nabble.com/Spe
> akers-Optimal-Frequency-Range-tp7623428.html
> Sent from the Elecraft mailing list archive at Nabble.com.
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> 

-- 
73's, and thanks,
Dave (NK7Z)
For software/hardware reviews see:
http://www.nk7z.net

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Re: [Elecraft] Speakers - Optimal Frequency Range?

[Joe Subich, W4TV]

On 10/16/2016 6:28 PM, Don Wilhelm wrote:
> IMHO, the best characteristic of a speaker is the flatness of its
> response curve rather than its frequency range.  A speaker with a flat
> response will allow you to hear the transceiver "as it should be"
> without distortion. So my vote is for "High-Fidelity" speakers.

While I agree that the speakers should not color the transceiver,
excessive low frequency response on receive is as wasteful as excessive
low frequency response on transmit.  In that regard, I'm very happy
with a pair of Pyle PCB3 (3" Mini Cube Bookshelf Speakers) - one left
and one right.  They are specified for 90 Hz - 18 KHz and I *still*
use the maximum RX EQ cut on the 50 and 100 Hz bands.

Speaker response above 5 - 6 KHz is moot since the K3/K3S includes a
4.5 KHz "brick wall" lowpass filter in the headphone/speaker channel.

73,

   ... Joe, W4TV



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Re: [Elecraft] Power output per mode?

[Fred Jensen]

Well, technically it is saved per band per KPA500 state, if you have 
one.  I'm pretty sure it isn't also saved per mode.


I've never been at ease with memory functions that simply save the last 
state without leaving a message somewhere on the display what the 
current saved state is.  When the "Power for KPA state" feature came 
out, there were several times when I faulted the KPA on the first dit 
because the power was at 100W.  I know it was pilot error but I began to 
check it just to be sure.


For a remote station with multiple operators in various places on the 
planet, I really do *always* check the power settings before transmitting.


73,

Fred K6DGW
- Sparks NV DM09dn

- Northern California Contest Club
- CU in the Cal QSO Party 7-8 Oct 2017
- www.cqp.org

On 10/16/2016 3:38 PM, George Kidder wrote:

I suspect that most of us like to reduce our power output on digital
modes, so the continuous carrier doesn't overheat something.  At present
(as far as I can figure out) the power output setting is saved per band
but not per mode, so that changing from CW to digital on the same band
requires remembering to reduce power manually, and remembering to put it
back when digital modes are no longer being used.

As an addition to the long wish list: How about saving the power output
setting per band AND per mode?  Or is there some technical reason why
this is not possible?

73
George, W3HBM


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Re: [Elecraft] More like K3S vs K3s

[Tim Tucker]

Man, some of you guys need to get out and do something else.  Try watching
football.  Or baseball.  Or anything besides worrying about what an "S"
really means.

Jesus.

On Sun, Oct 16, 2016 at 3:48 PM, Terry Schieler  wrote:

> Thanks to Phil W7OX who dug out Wayne's "official" email back when the
> capital S issue first arose:
>
>
> Wayne posted this message early in the K3S era:
>
> --
>
> *List: elecraft
>  Subject:
> Re: [Elecraft] K3s and K3S.
> 
> From: Wayne Burdick 
> 
> Date: 2015-05-14 21:55:23
> *
>
> Generally it's supposed to be "K3S" (capital). Please use that in email.
>
> However, on the radio itself, and in the owner's manual (etc.) we use a
> slightly \
> smaller capital "S". To be specific, about 85% of a full-height capital.
> This just \
> seemed like the right thing to do. Don't get me started on branding and
> graphic \
> design
>
> I'm looking forward to seeing a blog post with the official "S" scaling :)
>
> 73,
> Wayne
> N6KR
>
> -Original Message-
> From: Terry Schieler [mailto:w...@swbell.net]
> Sent: Saturday, October 15, 2016 6:47 PM
> To: 'Charlie T, K3ICH'; elecraft@mailman.qth.net
> Subject: [Elecraft] More like K3S vs K3s
>
> Actually, way back when the K3S was introduced, we poked a lot of fun at
> not
> being able to distinguish the new K3S from the possessive of a K3 or the
> quantities of K3Ss.  Those of us involved in those exchanges were clear
> when
> Wayne "suggested" that we use K3S (capital S) for the new radio when
> posting
> here to avoid confusion.  The problem exists because, for marketing and
> registration issues, Elecraft elected to use a *smaller font capital S for
> the S in K3S*.  If you think about it, you will notice that we have no
> choice of a font selection here on this reflector for a smaller capital S.
> So, the obvious fix for here was to use K3S (capital S) for the new radio.
> I think Wayne tried to explain that back then and some new users just don't
> understand why, and consequently, attempt to mimic the artistic expression
> of the new radio graphic logo.  If you look closely at the Elecraft web
> site
> you will see that much of the new literature and reference to the K3S on
> the
> site has begun to evolve into the K3S (capital S) probably for the sake of
> clarity..
>
> Wayne may jump in to clarify, but that's what I recall.
>
> Terry  W0FM
>
>
>
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>



-- 
Owner, worldwidedx.com
AE6LX, Amateur Radio
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Re: [Elecraft] More like K3S vs K3s

[Terry Schieler]

Thanks to Phil W7OX who dug out Wayne's "official" email back when the
capital S issue first arose:


Wayne posted this message early in the K3S era:

--

*List: elecraft 
 Subject: 
Re: [Elecraft] K3s and K3S. 
 
From: Wayne Burdick  
 
Date: 2015-05-14 21:55:23 
*

Generally it's supposed to be "K3S" (capital). Please use that in email.

However, on the radio itself, and in the owner's manual (etc.) we use a
slightly \
smaller capital "S". To be specific, about 85% of a full-height capital.
This just \
seemed like the right thing to do. Don't get me started on branding and
graphic \
design

I'm looking forward to seeing a blog post with the official "S" scaling :)

73,
Wayne
N6KR

-Original Message-
From: Terry Schieler [mailto:w...@swbell.net] 
Sent: Saturday, October 15, 2016 6:47 PM
To: 'Charlie T, K3ICH'; elecraft@mailman.qth.net
Subject: [Elecraft] More like K3S vs K3s

Actually, way back when the K3S was introduced, we poked a lot of fun at not
being able to distinguish the new K3S from the possessive of a K3 or the
quantities of K3Ss.  Those of us involved in those exchanges were clear when
Wayne "suggested" that we use K3S (capital S) for the new radio when posting
here to avoid confusion.  The problem exists because, for marketing and
registration issues, Elecraft elected to use a *smaller font capital S for
the S in K3S*.  If you think about it, you will notice that we have no
choice of a font selection here on this reflector for a smaller capital S.
So, the obvious fix for here was to use K3S (capital S) for the new radio.
I think Wayne tried to explain that back then and some new users just don't
understand why, and consequently, attempt to mimic the artistic expression
of the new radio graphic logo.  If you look closely at the Elecraft web site
you will see that much of the new literature and reference to the K3S on the
site has begun to evolve into the K3S (capital S) probably for the sake of
clarity..

Wayne may jump in to clarify, but that's what I recall.  

Terry  W0FM



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[Elecraft] Power output per mode?

[George Kidder]

I suspect that most of us like to reduce our power output on digital 
modes, so the continuous carrier doesn't overheat something.  At present 
(as far as I can figure out) the power output setting is saved per band 
but not per mode, so that changing from CW to digital on the same band 
requires remembering to reduce power manually, and remembering to put it 
back when digital modes are no longer being used.


As an addition to the long wish list: How about saving the power output 
setting per band AND per mode?  Or is there some technical reason why 
this is not possible?


73
George, W3HBM
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[Elecraft] K3-100 For Sale

[Jim Stockwell]

I recently upgraded to a new K3S so I am selling my old K3-100.  It is in
excellent physical and working condition and from a non-smoking home.
PayPal Preferred (no fee).  Includes CONUS Shipping.  The price is $2,100.
Please contact me via w...@arrl.net   Thanks!  Jim, W6KC

 

K3-100 (Serial #7531) - $2,100 

KAT3 K3 ATU

KRX3 K3 2nd Receiver

KDVR3 K3 Digital voice module

KXV3A K3 TX ant, IF Out & Xvrtr Interface

KFL3A-2.7K 2.7 kHz, 5-pole standard filters in both Receivers

KPCA-F Power Cable

Original Cost $3,500+

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Re: [Elecraft] M1 got screwed up

[Jim Miller]

never mind figured it out...

jim ab3cv

On Sun, Oct 16, 2016 at 6:33 PM, Jim Miller  wrote:

> I normally my callsign in M1 for CW. However when I press M1 now I get
> dropped into the Mic SEC menu.
>
> Any idea how to undo this assignment?
>
> I've poked around in the K3 utility and edited the CW memories to try to
> fix it with no luck.
>
> jim ab3cv
>
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[Elecraft] M1 got screwed up

[Jim Miller]

I normally my callsign in M1 for CW. However when I press M1 now I get
dropped into the Mic SEC menu.

Any idea how to undo this assignment?

I've poked around in the K3 utility and edited the CW memories to try to
fix it with no luck.

jim ab3cv
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Re: [Elecraft] Speakers - Optimal Frequency Range?

[Wes Stewart]

That's why we use a CM500

On 10/16/2016 3:18 PM, Jim Brown wrote:
What matters is smooth (flat) response from about 200 Hz to about 3 kHz as 
heard at the ear of the operator. The laws of physics dictate that uniformity 
of high frequency response is limited by diaphragm size -- the larger the 
speaker, the worse it sounds off axis. The speaker built into the K3 is a nice 
small one, so it has pretty good off axis response, but it faces straight up. 
In most shacks, the highs bounce off of nearby surfaces to get to the 
listener. A front-facing loudspeaker will have flatter response, but takes up 
more space on the operating desk.


73, Jim K9YC 


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Re: [Elecraft] Speakers - Optimal Frequency Range?

[Don Wilhelm]

Bret,

In my opinion, a speaker should not "color" the audio response of the 
receiver.


While it is true that there is not normally much response above 4000Hz 
from a ham transceiver, the speaker should not be the limiting factor.


IMHO, the best characteristic of a speaker is the flatness of its 
response curve rather than its frequency range.  A speaker with a flat 
response will allow you to hear the transceiver "as it should be" 
without distortion. So my vote is for "High-Fidelity" speakers.


73,
Don W3FPR

On 10/16/2016 6:02 PM, MaverickNH wrote:

So aside from speakers that match the design of a transceiver, there seems to
be some difference in philosophy about frequency range. Palstar touts a
55-8000 Hz range while the Phonema and Elecraft speakers spec at 100-2
Hz. Palstar says sound above 8kHz is non-communication noise.

So what's the verdict, High-Fidelity or HAM-Fidelity?

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Re: [Elecraft] Speakers - Optimal Frequency Range?

[Jim Brown]

What matters is smooth (flat) response from about 200 Hz to about 3 kHz 
as heard at the ear of the operator. The laws of physics dictate that 
uniformity of high frequency response is limited by diaphragm size -- 
the larger the speaker, the worse it sounds off axis. The speaker built 
into the K3 is a nice small one, so it has pretty good off axis 
response, but it faces straight up. In most shacks, the highs bounce off 
of nearby surfaces to get to the listener. A front-facing loudspeaker 
will have flatter response, but takes up more space on the operating desk.


73, Jim K9YC

On Sun,10/16/2016 3:02 PM, MaverickNH wrote:

So what's the verdict, High-Fidelity or HAM-Fidelity?



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[Elecraft] Speakers - Optimal Frequency Range?

[MaverickNH]

So aside from speakers that match the design of a transceiver, there seems to
be some difference in philosophy about frequency range. Palstar touts a
55-8000 Hz range while the Phonema and Elecraft speakers spec at 100-2
Hz. Palstar says sound above 8kHz is non-communication noise.

So what's the verdict, High-Fidelity or HAM-Fidelity?

Bret/N4SRN 



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Re: [Elecraft] Recording audio messages for N1MM+

[Nr4c]

Yes with latest firmware. 

Sent from my iPhone
...nr4c. bill


> On Oct 16, 2016, at 11:28 AM, Jim Miller  wrote:
> 
> Does the K3S output the monitor audio to LineOUT to allow N1MM+ audio to
> capture it for on the fly recording?
> 
> Thanks
> 
> jim ab3cv
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Re: [Elecraft] (K3) APF and selected bandwidth

[David Blake via Elecraft]

I chase very weak CW signals on 160M 80M and 6M many of which Iwould not have 
been able to hear unless I turned on the APF feature.
I have a 400kz filter as my narrowest CW filter and tune like this: 
    1) Zero beat exactly 
    2) Hold the XFIL/APF button    3) Narrow the width as far as it will go  to 
.05 which I interpret as being 50hz    4) it might help to change tuning to 3 
digits by taping the FINE button    5) Tune ever so carefully +/- a few hz and 
sometimes shifting slightly until the best signal is heard
A weak signal often pops right out of the noise, but be you will find there may 
be unpleasantringing, popping in the noise you might not like.  Point is u can 
pull a signal out and work himwhen it would otherwise be impossible to copy.
73Dave N4DB  K3s 10223
 

On Sunday, October 16, 2016 12:56 PM, Robert W5AJ Wood  
wrote:
 

 I'm curious about others BW (width) setting on CW
If weak, really weak  using 20 to 15 hz 
Going narrower to 10 or 5hz setting doesn't seem to do much 
Really helps on weak 160 signals, generally APF off 

73 Robert W5AJ



-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of brian
Sent: Sunday, October 16, 2016 9:43 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] (K3) APF and selected bandwidth

Part of the problem with narrower bandwidths is making sure the signal is at
the APF peak.

I had fits trying to use APF with 200-400 Hz dialed in until I launched
Spectrogram and made sure the signal peak aligned with the APF peak.
Weak signals still show even when you have trouble hearing them.  This
alignment helps with pulling them out.  One can tune either the K3 shift
knob or K3 main tuning if it is set at 1 Hz steps.

Works every time.

Spectrogram can be collapsed to a small rectangle for this purpose an
permanently left on the display.  HSDR also has a narrow bandwidth display.
Other spectrum display programs would work as well.

73 de Brian/K3KO




On 10/16/2016 13:03 PM, Chip Stratton wrote:
> I seem to recall a recommendation to use a 400 Hz bandwidth with APF. 
> In my own exerience, narrowing DSP bandwidth much below this does not 
> seem to help APF function and rather muddies it.
>
> Chip
> AE5KA
>
> On Sat, Oct 15, 2016 at 11:44 PM, Brian Hunt 
> wrote:
>
>> On the other hand, when used in conjunction with NR a wider DSP BW is 
>> desirable since NR works on uncorrelated noise. Try:
>> BW= 700-1000 Hz,
>> NR= ~ 5-3
>> APF= ON
>> Great for pulling out weak signals on an uncrowded band. The NR 
>> settings of 5 and above mix processed and non-processed data so the 
>> APF has something to work on.  My theory, anyway.
>>
>> 73,
>> Brian, K0DTJ
>>
>>> On Oct 15, 2016, at 19:52, Ken Arck  wrote:
>>>
>>> The narrower the bandwidth, the better signal to noise.
>>>
>>> That should answer your question :-)
>>>
>>> Ken
>>>
>>>
>>> At 07:39 PM 10/15/2016, Robert G Strickland wrote:
 When using the APF, does it make a difference which bandwidth has 
 been
>> selected? Or in other words, does APF work better on top of a narrow 
>> or wide bandwidth, or is selected bandwidth irrelevant? Thanks.
 ...robert
 --
 Robert G Strickland, PhD ABPH - KE2WY rc...@verizon.net.usa 
 Syracuse, New York, USA

>>
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>> lightdazz...@gmail.com
>>
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> als...@comcast.net
>
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Home: 

[Elecraft] For Sale Items

[Julius Fazekas n2wn via Elecraft]

National Radio NRM-2D Resonance Dip Meter, three coil set in Pelican Case, no
manual. Virtually unused. $200 shipped CONUS. see
http://www.nationalrf.com/national_rfdipmetter.htm

K2 QRP CW rig. 160 through 10. Includes K160X, KNB2, KAF2, KIO2, KAT2 and
KBT2 with a new battery. Plus spare parts. I built and used this radio.
Asking $775 delivered CONUS.

Thanks for looking.

73,
Julius
n2wn



-
Julius Fazekas
N2WN

Tennessee Contest Group
http://www.k4ro.net/tcg/index.html

Tennessee QSO Party
http://www.tnqp.org/

Elecraft K2#4455
Elecraft K3/100 #366
Elecraft K3/100 
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Re: [Elecraft] K3S QST Article

[Jim Brown]

Bill,

Another good solution is LiFePO4 batteries, which have a relatively 
flatter discharge curve than Lead-Acid, and that discharge curve is much 
closer to 13V  for LiFePO4 than 11.5V for Lead Acid.  Yes, they're more 
expensive to buy, but they last a lot longer.


73, Jim K9YC

On Sat,10/15/2016 8:32 AM, Bill Frantz wrote:
It seems to me that this solution would tie the K3S++ to mains power. 
Being tied to mains power would impact my club's use of K3s with 
batteries on events like the California QSO party. (Our location does 
not permit generators.) I don't know how much such a restriction would 
shrink the K3S market. 



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Re: [Elecraft] (K3) APF and selected bandwidth

[Robert W5AJ Wood]

I'm curious about others BW (width) setting on CW
If weak, really weak  using 20 to 15 hz 
Going narrower to 10 or 5hz setting doesn't seem to do much 
Really helps on weak 160 signals, generally APF off 

73 Robert W5AJ



-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of brian
Sent: Sunday, October 16, 2016 9:43 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] (K3) APF and selected bandwidth

Part of the problem with narrower bandwidths is making sure the signal is at
the APF peak.

I had fits trying to use APF with 200-400 Hz dialed in until I launched
Spectrogram and made sure the signal peak aligned with the APF peak.
Weak signals still show even when you have trouble hearing them.  This
alignment helps with pulling them out.  One can tune either the K3 shift
knob or K3 main tuning if it is set at 1 Hz steps.

Works every time.

Spectrogram can be collapsed to a small rectangle for this purpose an
permanently left on the display.  HSDR also has a narrow bandwidth display.
Other spectrum display programs would work as well.

73 de Brian/K3KO




On 10/16/2016 13:03 PM, Chip Stratton wrote:
> I seem to recall a recommendation to use a 400 Hz bandwidth with APF. 
> In my own exerience, narrowing DSP bandwidth much below this does not 
> seem to help APF function and rather muddies it.
>
> Chip
> AE5KA
>
> On Sat, Oct 15, 2016 at 11:44 PM, Brian Hunt 
> wrote:
>
>> On the other hand, when used in conjunction with NR a wider DSP BW is 
>> desirable since NR works on uncorrelated noise. Try:
>> BW= 700-1000 Hz,
>> NR= ~ 5-3
>> APF= ON
>> Great for pulling out weak signals on an uncrowded band. The NR 
>> settings of 5 and above mix processed and non-processed data so the 
>> APF has something to work on.  My theory, anyway.
>>
>> 73,
>> Brian, K0DTJ
>>
>>> On Oct 15, 2016, at 19:52, Ken Arck  wrote:
>>>
>>> The narrower the bandwidth, the better signal to noise.
>>>
>>> That should answer your question :-)
>>>
>>> Ken
>>>
>>>
>>> At 07:39 PM 10/15/2016, Robert G Strickland wrote:
 When using the APF, does it make a difference which bandwidth has 
 been
>> selected? Or in other words, does APF work better on top of a narrow 
>> or wide bandwidth, or is selected bandwidth irrelevant? Thanks.
 ...robert
 --
 Robert G Strickland, PhD ABPH - KE2WY rc...@verizon.net.usa 
 Syracuse, New York, USA

>>
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[Elecraft] [PX3] Does not respond to the knob being rotated

[James Austin]

My PX3 no longer responds to the knob being turned. The only indication I
see when turning it is when the marker frequency is being displayed. When
turning the knob, the displayed marker frequency bounces back and forth
between something like 14.050.80 and 14.050.85.

The PX3 is otherwise functional.

Any suggestions? I opened it up and all the solder connections for the
encoder are solid.

73,

Jim/KA2RVO
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Re: [Elecraft] Recording audio messages for N1MM+

[dmoes]

There was a recent software update that removed the audio monitor 
from line out.  the latest beta fixes that so it is backso 
normally yes it does   when I use QSOrder with N1MM I hear both sides 
of the QSOI never had the update that broke the line out monitor   
if you have it  I think it was early summer that this happened.  
others will probably know versions.   install the latest beta. it will 
give you fixed level monitor for this very purpose.   (Elecraft 
software developers  note!) Id rather have the fixed level on line out 
than have the line out level follow the level set by the front panel 
that sets it for headphones and speaker monitor.




David Moes
VE3SD



On Sunday 16/10/2016 at 11:28 am, Jim Miller  wrote:
Does the K3S output the monitor audio to LineOUT to allow N1MM+ audio 
to

capture it for on the fly recording?

Thanks

jim ab3cv
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[Elecraft] Recording audio messages for N1MM+

[Jim Miller]

Does the K3S output the monitor audio to LineOUT to allow N1MM+ audio to
capture it for on the fly recording?

Thanks

jim ab3cv
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Re: [Elecraft] (K3) APF and selected bandwidth

[brian]

Part of the problem with narrower bandwidths is making sure the signal 
is at the APF peak.


I had fits trying to use APF with 200-400 Hz dialed in until I launched 
Spectrogram and made sure the signal peak aligned with the APF peak.
Weak signals still show even when you have trouble hearing them.  This 
alignment helps with pulling them out.  One can tune either the K3 shift 
knob or K3 main tuning if it is set at 1 Hz steps.


Works every time.

Spectrogram can be collapsed to a small rectangle for this purpose an 
permanently left on the display.  HSDR also has a narrow bandwidth 
display.  Other spectrum display programs would work as well.


73 de Brian/K3KO




On 10/16/2016 13:03 PM, Chip Stratton wrote:

I seem to recall a recommendation to use a 400 Hz bandwidth with APF. In my
own exerience, narrowing DSP bandwidth much below this does not seem to
help APF function and rather muddies it.

Chip
AE5KA

On Sat, Oct 15, 2016 at 11:44 PM, Brian Hunt 
wrote:


On the other hand, when used in conjunction with NR a wider DSP BW is
desirable since NR works on uncorrelated noise. Try:
BW= 700-1000 Hz,
NR= ~ 5-3
APF= ON
Great for pulling out weak signals on an uncrowded band. The NR settings
of 5 and above mix processed and non-processed data so the APF has
something to work on.  My theory, anyway.

73,
Brian, K0DTJ


On Oct 15, 2016, at 19:52, Ken Arck  wrote:

The narrower the bandwidth, the better signal to noise.

That should answer your question :-)

Ken


At 07:39 PM 10/15/2016, Robert G Strickland wrote:

When using the APF, does it make a difference which bandwidth has been

selected? Or in other words, does APF work better on top of a narrow or
wide bandwidth, or is selected bandwidth irrelevant? Thanks.

...robert
--
Robert G Strickland, PhD ABPH - KE2WY
rc...@verizon.net.usa
Syracuse, New York, USA



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Re: [Elecraft] Performance of the KX2 batt

[John Oppenheimer]

Using the DISP voltage, using internal battery, receive is 11.7V and 10W
in TUNE is 10.8V. a drop of 0.9V. The receive drop is a tenth or two, or
round down to a 1V total voltage drop during 10W transmit. The minimum
battery voltage would then be 11V or 3.67V per cell. Looking at
representative discharge curves, 3.67V, is consistent with a 50% discharge.

John KN5L

On 10/16/2016 08:01 AM, Chip Stratton wrote:
> The unloaded voltage of your pack, and the number of amp-hours used are
> consistent with each other, you are about half-way through the usable
> amp-hours of the battery, which has a 2.3 amp-hour rated capacity. Not sure
> exactly what to expect about the voltage drop under load, but I am not
> surprised by it, it would suggest the battery supply has about a 350
> milliohm resistance which again is not surprising.
> 
> I think all is normal with your battery and rig. I'm sure someone else on
> the list with confirm or deny me!
> 
> They could have used Panasonic 3.2 amp-hour 18650 cells in the battery pack
> with no increase in size for longer operating time, but maybe it was a
> weight isssue?
> 
> Chip
> AE5KA
> 
> On Sun, Oct 16, 2016 at 8:31 AM, Howard Sherer  wrote:
> 
>> I have been running my KX2 with the Elecraft supplied batt pack for the
>> past two weeks and have a question for others using the same. I can run the
>> KX2 at 10W only till I have used 1.12 AH of the batt capacity and its key
>> up V=11.0 and key down is 10.3. At this time I can only run the KX2 at 5W.
>>
>> I was expecting that I would be able to run the KX2 at 10W for a longer
>> period. I have repeated this through 4 recharge cycles and the results ar
>> the same. Is my batt pack showing reduced performance?
>>
>> Overall I am very pleased with the performance of the KX2
>>
>> Howard AE3T
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Re: [Elecraft] Performance of the KX2 batt

[Bill Frantz]

The Lithium family of battery chemistries all drop in voltage as 
battery capacity is used. At lower voltages, the KX2 IMD goes 
up, so the firmware reduces power output to maintain a clean signal.


The choices seem to be:

  Keep going with 5W and enjoy QRP.
  Pack up the radio, go home, and enjoy a beverage of your choice.
  Use an external battery pack.

Other chemistries, like NiCd and NiMH, tend to hold their output 
voltage longer into the discharge cycle. They might be a better, 
although heavier, choice for an external battery pack.


73 Bill AE6JV

On 10/16/16 at 5:31 AM, h...@lehigh.edu (Howard Sherer) wrote:


I have been running my KX2 with the Elecraft supplied batt pack for the
past two weeks and have a question for others using the same. I can run the
KX2 at 10W only till I have used 1.12 AH of the batt capacity and its key
up V=11.0 and key down is 10.3. At this time I can only run the KX2 at 5W.

-
Bill Frantz| Airline peanut bag: "Produced  | Periwinkle
(408)356-8506  | in a facility that processes   | 16345 
Englewood Ave
www.pwpconsult.com | peanuts and other nuts." - Duh | Los Gatos, 
CA 95032


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Re: [Elecraft] Performance of the KX2 batt

[Doug Turnbull]

Dear OMs and YLs,
 I am not taking issue with what Howard is saying.   My operations are
different!The reason for entering this discussion is that the battery is
being mentioned which I am more than pleased with for CW at 5 Watts.  I have
some observations and a question to finish with.

 First the battery pack appears to weigh approximately half that of the
KX3 battery pack and is physically half size.I am most pleased at the
rapid charging time of about three hours versus up to sixteen hours for the
KX3 battery pack. From now on I will take the charger with me on trips - it
works from a wide range of line voltages. Different computer line power
cords for the UK, Europe and USA are easily obtained.  One battery pack
should do.   You can not run the KX2 from the Charger!!!   The charger is
light and small with the line cord being an unfortunate necessity.  

 Owning both a KX3 and KX2 my intent is in future to only use the KX2
battery pack with either radio.   Travelling by plane with KX3 may be a
problem in that the battery pack should be inside the radio.   The KX3 will
not be flying besides the KX2 is half the volume and weight.   Normally the
battery pack is kept external to the radio.

 Now this is not a comparison of like loads but I find that the KX2
battery pack will last nearly two pages of CW QSOs.  The life span of
batteries with the KX2 beats the life span of batteries with KX3 - this is
not a numerical judgement but one observed through operation.

 Does anyone in the UK or the greater EU have a source of the KX2 type
battery pack in Europe other than those sold by a UK official supplier?   I
want to continue using the KX2 charger.   Adding a connector is no problem.

Another KX2 KX3 topic:

 I find the KX2 an amazing wee radio.   My KX1 has gone to a new home
where it will be used on the trail.   I miss 160M and would probably like 6M
but to be honest TB is not used while travelling and the magic band QSO
style I find boring in Europe - no one rag chews.

 Hopefully Bob Sherwood will do a review of receiver performance.   The
KX2 can not(?) match the KX3 but it is everything I require for portable
operations.   Maybe the KX2 underperforms the KX3 for QRP contesting or for
a DXpedition with large pileups.   It would be nice to know the RX figures.

It was love at first sight when the KX2 viewed at Friedrichshafen.
This is a fun radio for someone interested in portable and especially tail
work.   Alas it is portable operations here.


  73 Doug EI2CN   KX2 SN 1000  Yes this is correct

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Howard
Sherer
Sent: 16 October 2016 12:31
To: elecraft
Subject: [Elecraft] Performance of the KX2 batt

I have been running my KX2 with the Elecraft supplied batt pack for the
past two weeks and have a question for others using the same. I can run the
KX2 at 10W only till I have used 1.12 AH of the batt capacity and its key
up V=11.0 and key down is 10.3. At this time I can only run the KX2 at 5W.

I was expecting that I would be able to run the KX2 at 10W for a longer
period. I have repeated this through 4 recharge cycles and the results ar
the same. Is my batt pack showing reduced performance?

Overall I am very pleased with the performance of the KX2

Howard AE3T
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Re: [Elecraft] (K3) APF and selected bandwidth

[Chip Stratton]

I seem to recall a recommendation to use a 400 Hz bandwidth with APF. In my
own exerience, narrowing DSP bandwidth much below this does not seem to
help APF function and rather muddies it.

Chip
AE5KA

On Sat, Oct 15, 2016 at 11:44 PM, Brian Hunt 
wrote:

> On the other hand, when used in conjunction with NR a wider DSP BW is
> desirable since NR works on uncorrelated noise. Try:
> BW= 700-1000 Hz,
> NR= ~ 5-3
> APF= ON
> Great for pulling out weak signals on an uncrowded band. The NR settings
> of 5 and above mix processed and non-processed data so the APF has
> something to work on.  My theory, anyway.
>
> 73,
> Brian, K0DTJ
>
> > On Oct 15, 2016, at 19:52, Ken Arck  wrote:
> >
> > The narrower the bandwidth, the better signal to noise.
> >
> > That should answer your question :-)
> >
> > Ken
> >
> >
> > At 07:39 PM 10/15/2016, Robert G Strickland wrote:
> >> When using the APF, does it make a difference which bandwidth has been
> selected? Or in other words, does APF work better on top of a narrow or
> wide bandwidth, or is selected bandwidth irrelevant? Thanks.
> >> ...robert
> >> --
> >> Robert G Strickland, PhD ABPH - KE2WY
> >> rc...@verizon.net.usa
> >> Syracuse, New York, USA
> >>
>
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Re: [Elecraft] Performance of the KX2 batt

[Chip Stratton]

The unloaded voltage of your pack, and the number of amp-hours used are
consistent with each other, you are about half-way through the usable
amp-hours of the battery, which has a 2.3 amp-hour rated capacity. Not sure
exactly what to expect about the voltage drop under load, but I am not
surprised by it, it would suggest the battery supply has about a 350
milliohm resistance which again is not surprising.

I think all is normal with your battery and rig. I'm sure someone else on
the list with confirm or deny me!

They could have used Panasonic 3.2 amp-hour 18650 cells in the battery pack
with no increase in size for longer operating time, but maybe it was a
weight isssue?

Chip
AE5KA

On Sun, Oct 16, 2016 at 8:31 AM, Howard Sherer  wrote:

> I have been running my KX2 with the Elecraft supplied batt pack for the
> past two weeks and have a question for others using the same. I can run the
> KX2 at 10W only till I have used 1.12 AH of the batt capacity and its key
> up V=11.0 and key down is 10.3. At this time I can only run the KX2 at 5W.
>
> I was expecting that I would be able to run the KX2 at 10W for a longer
> period. I have repeated this through 4 recharge cycles and the results ar
> the same. Is my batt pack showing reduced performance?
>
> Overall I am very pleased with the performance of the KX2
>
> Howard AE3T
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[Elecraft] Performance of the KX2 batt

[Howard Sherer]

I have been running my KX2 with the Elecraft supplied batt pack for the
past two weeks and have a question for others using the same. I can run the
KX2 at 10W only till I have used 1.12 AH of the batt capacity and its key
up V=11.0 and key down is 10.3. At this time I can only run the KX2 at 5W.

I was expecting that I would be able to run the KX2 at 10W for a longer
period. I have repeated this through 4 recharge cycles and the results ar
the same. Is my batt pack showing reduced performance?

Overall I am very pleased with the performance of the KX2

Howard AE3T
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