[Elecraft] Mic. RODE Procaster & K3 experience

[Gordan Hribar]

I wonder if any of you have experience with R0DE PROCASTER microphone attached 
on K3?
All comments are welcome!

E72X
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Re: [Elecraft] [KX3] KXPD3

[Mathias Krüger]

Hello Thomas,

where can i find the KX3 group you mentioned?

Regards
Mathias
HB9DOU


2012/9/18 Thomas Horsten 

> Hi Robert,
>
> I posted two updates, one just after I got the KXPD3 upgrade kit and
> another after I'd used it for a couple of days. These were posted on the
> KX3 group (join if you are not there already, most of the KX3 talk goes on
> there). Anyway, for those of you who haven't seen it, I'm copying the two
> updates below:
>
> Hi all,
>
> I received the field tester upgrade kit this morning. It took about 10
> minutes to install. The only problem was the size of the screw hole in the
> PCB was a bit tight, but I didn't need to drill as long as I carefully
> tightened each of the mounting bolts one turn at a time (this is a known
> problem and will be fixed in the final version).
>
> The kit consists of a new PCB with stainless steel fixed contacts, new
> contact screws with rounded ends, and two alternative springs to choose
> from with lower tension than the original.
>
> I selected the lowest tension spring and set the contact spacing at three
> quarters of a turn from the inner (fully closed) position.
>
> The paddles feel completely different. I tried sending some of the text
> from the upgrade instructions and didn't have a single missed dit or dah,
> and both the spring resistance and the crispness of the action is improved
> by an order of magnitude. I wouldn't say it rivals my Begali Sculpture but
> it is much closer to that feel than it was before.
>
> Now I just hope it stays that way, I guess with a portable rig, dirt on the
> contacts will be a bigger issue than for a home key, but out of the box, no
> complaints at all, thanks to everyone at Elecraft, you've done a great job.
>
> I did a video of my upgrade, but unfortunately my phone ran out of memory
> after 5 minutes, so the most interesting bits didn't get recorded. Maybe
> I'll post it anyway just to show the unboxing and the kit content.
>
> WX for the weekend is looking like we're in for a bit of Indian summer,
> with full sunshine and 27C, so I hope I'll be able to get some outdoor
> operating done with the KX3, maybe a WFF activation on Sunday. I'll report
> back after a while and see how it goes.
>
> 73, Thomas M0TRN
>
>
> After posting my first impressions just after the upgrade, I've used the
> upgraded KXPD3 for several real QSO's and I wanted to give an update.
>
> My KXPD3 already had the PCB mod performed which had greatly reduced the
> intermittent contact problem. So I didn't expect the upgrade to make that
> huge a difference (only compared to the unmodified PCB which was pretty
> horrid in this respect).
>
> But I actually find that the upgrade kit does far more than that. It takes
> the key and transforms it from a sub-Bencher feel to a near-Begali feel.
>
> To get reliable operation on the paddles before, the contact spacing needed
> to be over 1mm. I think the main reason was the shape of the end of the
> contact screws. Per the suggestions previously made on this list, I'd tried
> filing down the ends of the contact screws to get them more rounded, but I
> hadn't done a very good job at it. The new contact screws are stainless
> steel and already rounded from the factory. Also the contact posts are now
> stainless steel as well. Finally, the spring tension was too high for
> comfortable operation at a very low spacing.
>
> So the spacing needed to be at least 1mm or so for the key to be workable.
>
> It's probably down to a combination of all the upgraded materials,
> including the lower tension contact spring, but the key works perfectly now
> with sub-mm contact spacing. I am using a spacing of about 0.3-0.5mm, which
> corresponds to about three quarters of a turn of the contact screws, and
> have locked them in that position. This, in combination with the lowest
> tension spring, gives an unsurpassed feel that I have only before
> experienced in my Begali Sculpture.
>
> I can now send clean code at 35 WPM with these paddles, something that was
> unthinkable before. Although most of my QSO's are at 25 WPM, it is nice to
> be able to send QRQ when the opportunity is there, and that's now possible
> with the KXPD3.
>
> The only thing I am missing slightly is individual tension adjustment of
> the left and right paddle. Since I use paddles with my left hand (but in a
> default configuration with dits on the left), I tend to use my Sculpture
> with a slightly higher spring tension in the left paddle. But in such a
> tiny key I wouldn't expect that.
>
> In short it's now a paddle that works extremely well and where the
> "precision" label is 100% justified. To be honest I thought that  was
> stretching it a bit in the original incarnation of the KXPD3.
>
> 73, Thomas M0TRN
>
>
> On 18 September 2012 00:26, Robert Vargas (KP4Y)  wrote:
>
> > How did field testing of the KXPD3 paddle upgrade turn out? I'm about to
> > pull the trigger but want to make sure that the reported glitches have
> been
> > taken ca

Re: [Elecraft] [KX3] KXPD3

[Holger Schurig]

At http://groups.yahoo.com/group/KX3/


P.S. you don't need to create a Yahoo account for this. You can use
your google account (if you already have one) using OpenID. Check for
that button on the Yahoo login page. Yahoo accounts get regularly
broken in, so better avoid them ...

Holger, DH3HS
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Re: [Elecraft] [KX3] KXPD3

[Thomas Horsten]

Hi Mathias,

The group homepage is here: http://groups.yahoo.com/group/KX3/

73, Thomas M0TRN

On 18 September 2012 10:27, Mathias Krüger wrote:

> Hello Thomas,
>
> where can i find the KX3 group you mentioned?
>
> Regards
> Mathias
> HB9DOU
>
>
>
> 2012/9/18 Thomas Horsten 
>
>> Hi Robert,
>>
>> I posted two updates, one just after I got the KXPD3 upgrade kit and
>> another after I'd used it for a couple of days. These were posted on the
>> KX3 group (join if you are not there already, most of the KX3 talk goes on
>> there). Anyway, for those of you who haven't seen it, I'm copying the two
>> updates below:
>>
>> Hi all,
>>
>> I received the field tester upgrade kit this morning. It took about 10
>> minutes to install. The only problem was the size of the screw hole in the
>> PCB was a bit tight, but I didn't need to drill as long as I carefully
>> tightened each of the mounting bolts one turn at a time (this is a known
>> problem and will be fixed in the final version).
>>
>> The kit consists of a new PCB with stainless steel fixed contacts, new
>> contact screws with rounded ends, and two alternative springs to choose
>> from with lower tension than the original.
>>
>> I selected the lowest tension spring and set the contact spacing at three
>> quarters of a turn from the inner (fully closed) position.
>>
>> The paddles feel completely different. I tried sending some of the text
>> from the upgrade instructions and didn't have a single missed dit or dah,
>> and both the spring resistance and the crispness of the action is improved
>> by an order of magnitude. I wouldn't say it rivals my Begali Sculpture but
>> it is much closer to that feel than it was before.
>>
>> Now I just hope it stays that way, I guess with a portable rig, dirt on
>> the
>> contacts will be a bigger issue than for a home key, but out of the box,
>> no
>> complaints at all, thanks to everyone at Elecraft, you've done a great
>> job.
>>
>> I did a video of my upgrade, but unfortunately my phone ran out of memory
>> after 5 minutes, so the most interesting bits didn't get recorded. Maybe
>> I'll post it anyway just to show the unboxing and the kit content.
>>
>> WX for the weekend is looking like we're in for a bit of Indian summer,
>> with full sunshine and 27C, so I hope I'll be able to get some outdoor
>> operating done with the KX3, maybe a WFF activation on Sunday. I'll report
>> back after a while and see how it goes.
>>
>> 73, Thomas M0TRN
>>
>>
>> After posting my first impressions just after the upgrade, I've used the
>> upgraded KXPD3 for several real QSO's and I wanted to give an update.
>>
>> My KXPD3 already had the PCB mod performed which had greatly reduced the
>> intermittent contact problem. So I didn't expect the upgrade to make that
>> huge a difference (only compared to the unmodified PCB which was pretty
>> horrid in this respect).
>>
>> But I actually find that the upgrade kit does far more than that. It takes
>> the key and transforms it from a sub-Bencher feel to a near-Begali feel.
>>
>> To get reliable operation on the paddles before, the contact spacing
>> needed
>> to be over 1mm. I think the main reason was the shape of the end of the
>> contact screws. Per the suggestions previously made on this list, I'd
>> tried
>> filing down the ends of the contact screws to get them more rounded, but I
>> hadn't done a very good job at it. The new contact screws are stainless
>> steel and already rounded from the factory. Also the contact posts are now
>> stainless steel as well. Finally, the spring tension was too high for
>> comfortable operation at a very low spacing.
>>
>> So the spacing needed to be at least 1mm or so for the key to be workable.
>>
>> It's probably down to a combination of all the upgraded materials,
>> including the lower tension contact spring, but the key works perfectly
>> now
>> with sub-mm contact spacing. I am using a spacing of about 0.3-0.5mm,
>> which
>> corresponds to about three quarters of a turn of the contact screws, and
>> have locked them in that position. This, in combination with the lowest
>> tension spring, gives an unsurpassed feel that I have only before
>> experienced in my Begali Sculpture.
>>
>> I can now send clean code at 35 WPM with these paddles, something that was
>> unthinkable before. Although most of my QSO's are at 25 WPM, it is nice to
>> be able to send QRQ when the opportunity is there, and that's now possible
>> with the KXPD3.
>>
>> The only thing I am missing slightly is individual tension adjustment of
>> the left and right paddle. Since I use paddles with my left hand (but in a
>> default configuration with dits on the left), I tend to use my Sculpture
>> with a slightly higher spring tension in the left paddle. But in such a
>> tiny key I wouldn't expect that.
>>
>> In short it's now a paddle that works extremely well and where the
>> "precision" label is 100% justified. To be honest I thought that  was
>> stretching it a bit in the original incarnat

Re: [Elecraft] Mic. RODE Procaster & K3 experience

[Bert Craig]

Interesting question. While not a phone man myself, I do remember hearing a 
chap on 10-meters while commuting home who was using that particular mic. He 
sounded as if he were in the passenger seat next to me. I'm not sure how 
much of that was the mic's actual sound reproduction &/or EQ amplification 
or the prevailing atmospheric conditions but it sure did make for some very 
comfortable armchair copy.

73 de Bert
WA2SI

- Original Message - 
From: "Gordan Hribar" 
To: 
Sent: Tuesday, September 18, 2012 4:56 AM
Subject: [Elecraft] Mic. RODE Procaster & K3 experience


>
> I wonder if any of you have experience with R0DE PROCASTER microphone 
> attached on K3?
> All comments are welcome!
>
> E72X
> __
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> 


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Re: [Elecraft] laptop power supply to power KX3

[Johnny]

Yes , correct , laptop supplies are often RF noisy.

Sent from my  iPhone 4

"Fred Townsend"  於 2012年9月18日 下午2:04 寫道：

> Jeff, caution.  Laptop power external supplies are designed to be followed
> by precision internal regulators that handle the logic voltages and charging
> the battery. The external supplies are not well regulated and can be quite
> noisy.  They may not be the best supplies for ham rigs.
> 73
> Fred, AE6QL
> 
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jeff Herr
> Sent: Monday, September 17, 2012 6:40 PM
> To: 'Elecraft Reflector'
> Subject: [Elecraft] laptop power supply to power KX3
> 
> While at work I went through our stock of power supplies for the various
> makes of laptops we use.
> I found that Toshiba supplies are specified 15v and ranged in current
> capability from 2.5 amps and up.
> 
> Dell, Lenovo, HP, Acer, Asus all use 19v supplies.
> 
> Those Toshiba supplies are very small.
> 
> WW6L
> 
> 
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Re: [Elecraft] Mic. RODE Procaster & K3 experience

[Barry N1EU]

E72X wrote
> I wonder if any of you have experience with R0DE PROCASTER microphone
> attached on K3?

I use the Rode Procaster, but I feed it through an Aphex 230.  The Procaster
is a superb microphone, but I've honestly not tried connecting it directly
to a radio.

73,
Barry N1EU




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Re: [Elecraft] laptop power supply to power KX3

[Jon K Hellan]

On 09/18/2012 01:44 PM, Johnny wrote:
> Yes , correct , laptop supplies are often RF noisy.

Any particular laptop and laptop supply brands favoured by dxpeditions?

Jon LA4RT

> 
> Sent from my  iPhone 4
> 
> "Fred Townsend"  於 2012年9月18日 下午2:04 寫道：
> 
>> Jeff, caution.  Laptop power external supplies are designed to be followed
>> by precision internal regulators that handle the logic voltages and charging
>> the battery. The external supplies are not well regulated and can be quite
>> noisy.  They may not be the best supplies for ham rigs.
>> 73
>> Fred, AE6QL
>>
>> -Original Message-
>> From: elecraft-boun...@mailman.qth.net
>> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jeff Herr
>> Sent: Monday, September 17, 2012 6:40 PM
>> To: 'Elecraft Reflector'
>> Subject: [Elecraft] laptop power supply to power KX3
>>
>> While at work I went through our stock of power supplies for the various
>> makes of laptops we use.
>> I found that Toshiba supplies are specified 15v and ranged in current
>> capability from 2.5 amps and up.
>>
>> Dell, Lenovo, HP, Acer, Asus all use 19v supplies.
>>
>> Those Toshiba supplies are very small.
>>
>> WW6L
>>
>>
>> __
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[Elecraft] K3 EQ settings

[JayR]

What are the best starting points for the cw and ssb receive eq settings on
the K3?



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[Elecraft] 40 meter noise level and K2

[dw]

I'm sure this question has been asked a ton.
It seems that the noise floor on 40 meters is much greater than on the
higher bands for my K2.

I'm guessing this is just the characteristic of 40 meters.
But I thought I would post the question anyway.

Thanks
N1BBR :)
-- 
 bw...@fastmail.net

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Re: [Elecraft] laptop power supply to power KX3

[David Cutter]

Thinkpad used on T32C and others.

David
G3UNA


- Original Message - 
From: "Jon K Hellan" 
To: 
Sent: Tuesday, September 18, 2012 11:56 AM
Subject: Re: [Elecraft] laptop power supply to power KX3


> On 09/18/2012 01:44 PM, Johnny wrote:
>> Yes , correct , laptop supplies are often RF noisy.
>
> Any particular laptop and laptop supply brands favoured by dxpeditions?
>
> Jon LA4RT
>
>>
>> Sent from my  iPhone 4
>>
>> "Fred Townsend"  於 2012年9月18日 下午2:04 寫道： 
>> 
>>
>>> Jeff, caution.  Laptop power external supplies are designed to be 
>>> followed
>>> by precision internal regulators that handle the logic voltages and 
>>> charging
>>> the battery. The external supplies are not well regulated and can be 
>>> quite
>>> noisy.  They may not be the best supplies for ham rigs.
>>> 73
>>> Fred, AE6QL
>>>
>>> -Original Message-
>>> From: elecraft-boun...@mailman.qth.net
>>> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jeff Herr
>>> Sent: Monday, September 17, 2012 6:40 PM
>>> To: 'Elecraft Reflector'
>>> Subject: [Elecraft] laptop power supply to power KX3
>>>
>>> While at work I went through our stock of power supplies for the various
>>> makes of laptops we use.
>>> I found that Toshiba supplies are specified 15v and ranged in current
>>> capability from 2.5 amps and up.
>>>
>>> Dell, Lenovo, HP, Acer, Asus all use 19v supplies.
>>>
>>> Those Toshiba supplies are very small.
>>>
>>> WW6L
>>>
>>>
>>> __
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>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>>>
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>>>
>>> __
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>> __
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>>
>
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Re: [Elecraft] 40 meter noise level and K2

[Don Wilhelm]

Yes, that is true.  Turn the preamp off for all bands below 20 meters 
and your ears will be more comfortable and you will hear signals just as 
well.

73,
Don W3FPR

On 9/18/2012 8:45 AM, dw wrote:
> I'm sure this question has been asked a ton.
> It seems that the noise floor on 40 meters is much greater than on the
> higher bands for my K2.
>
> I'm guessing this is just the characteristic of 40 meters.
> But I thought I would post the question anyway.
>
> Thanks
> N1BBR :)

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Re: [Elecraft] K3 EQ settings

[Lyle Johnson]

Flat.

The primary purpose of the receive equalizer is to compensate for uneven 
frequency response in the receiver speakers, headphones, or listener's ears.

It does not add additional selectivity.

Also, I suggest if you are using it in CW that you leave the response at 
or near your preferred sidetone pitch at 0 dB and do whatever 
compensation you need relative to that setting.  The reason is that at 
very narrow selectivity settings (50 Hz and 100 Hz) the receiver 
equalizer is not active.  If you are using the receiver equalizer to 
provide some sort of peak at your chosen pitch, you will experience a 
drop in overall gain when the equalizer is bypassed at these narrow 
selectivity width settings.

73,

Lyle KK7P

> What are the best starting points for the cw and ssb receive eq settings on
> the K3?

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[Elecraft] OT: For Sale - Array Solutions AIM 4170 Antenna Analyzer plus extras

[Craig Smith]

I have for sale my AIM4170 antenna analyzer SN 3049.  I purchased this new in 
2007 and it is in perfect working condition.  This has been one of my best ever 
purchases and has been invaluable for both antenna and lab measurements.  Am 
cleaning out the lab and shack in preparation for a move, so time to let this 
one go.

This is perhaps the best antenna analyzer on the market, especially for use in 
the shack.  It does require connection to a computer for control and display, 
but gives awesome results including ability to save and print analysis results 
in graphical form.  The software allows for easy calibration at the far end of 
your coax run, and this capability permits you to see exactly what the antenna 
itself is doing without the effects of the transmission line - this feature 
alone makes this analyzer worthwhile.  This has been a terrific asset here for 
designing and building many homebrew antennas.  But I have actually used it 
much more often as a piece of lab gear.  It provides a very useful signal 
generator with a range of 5 KHz to 180 MHz.  The analyzer is quite handy for 
measuring the characteristics of filters and chokes as well as accurately 
measuring components at any frequency of your choice.  Makes for a better L and 
C meter than anything available for less than $1000.  Excell
 ent impedance measurements showing both series and parallel R, L and C 
components as well as phase angle.  Very accurate for impedances up to 10 
Kohms.   Can also do TDR measurements.  Too many features and functions to list 
here, but see the information available on the website - www.arraysolutions.com 
 -  for more detail.  Look for model  AIM4170C.  The latest manual, etc., can 
also be downloaded here.

This unit is the original version rather than the C version, but was upgraded 
last year by Array Solutions to be equivalent to the 4170C.  Upgrade included 
installing the version 5.8 firmware and larger coupling caps for the extended 
low frequency response.  Fully functionally equivalent to the 4170C.  Only 
difference is that this unit still has the BNC output connector rather than the 
UHF connector shipped on newer units.  I actually much prefer the BNC for lab 
work and for ease of connecting antennas.

I'm also including the optional serial to USB converter.  I have used this with 
my Dell computer and it has functioned perfectly with the AIM4170.  This 
converter works with Windows XP or earlier.   Converters for use with Vista or 
Windows 7 are readily available from Array Solutions as well as many other 
sources.  Or, the 4170 can be used with any RS232 serial interface directly.

I am also including a test jig I built for component characterization.  This is 
a small box that plugs into the AIM output connector and offers several options 
for connecting components for easy and convenient measurement.  There are 
Grayhill component clips for axial components, 0.1 inch headers for capacitors 
and radial leads, and a clip arrangement for attaching components in SMT 
packages.  The AIM software allows for easy calibration for any of these 
attachment points to eliminate the strays of the test fixture.  The jig also 
has a momentary switch to provide a short during the calibration process.

Also included are some additional resistive standards I've used at the far end 
of coax runs as well as a Pomona BNC to banana plug adapter and 50 ohm 
termination.

Your purchase also includes the AC wall adapter, all the original documentation 
as well as a collection of product reviews and application notes that I have 
found useful.

Price is $440.  PayPal only, please.  Shipping via UPS insured ground in the 
lower 48 should be from $17 to $22 depending on your distance from Colorado.  
Please provide your zip and I can give you an exact quote on the shipping.

If interested, please contact me directly via email:  cr...@powersmith.net

73  Craig  AC0DS


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[Elecraft] FS: Elecraft Mini-Modules

[Craig Smith]

I have for sale three Mini-modules.   I built each of them and they are all in 
perfect condition.  Closing down the shack and lab here in preparation for a 
move, so its time to do some major cleaning.  Purchase includes all 
documentation as well as USPS Priority Mail shipping to your USA QTH.  PayPal 
only, please.

AT1 Step Attenuator  -  $47

N-Gen Wide Band Noise Generator  -  $47

XG-2  3 band, two level Test Oscillator  -  $61


Please contact me directly via email if interested:cr...@powersmith.net

73  Craig  AC0DS  






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[Elecraft] K-Line Addition - DC Power Supply (Suggestion)

[rich kennedy]

How do Elecraft users feel about the possible addition of a
high-quality DC power supply that matches both the physical dimensions and
veneer of the existing K-Line?  The power
supply could even be sized to set above/below the new KAT500 and should, IMHO,
have multiple DC outlets such as Powerpoles® and screw lugs.  I’d be willing to 
pay a premium for a quiet DC
power supply with very low emission characteristics.  Thanks, 73, Rich, K3VAT
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[Elecraft] P3 firm ware

[Frank Moore]

Any date for the P3 software release to use the USB key board with digital 
modes?

Frank. K4WFM

Sent from my mobile phone
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[Elecraft] K-Line Addition - DC Power Supply (Suggestion)

[paul ecker]

I think that is a great idea. My current power supply been around a while and 
is Noisy.

73 Paul
kc2nyu
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Re: [Elecraft] P3 firm ware

[Paul Saffren N6HZ]

Hi Frank, 

We're in final beta now, so it shouldn't be much longer.  If you'd like to
download this beta and try it out, it can be found  HERE
Be sure to read the included
PDF file for instructions. 

73, 

Paul




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View this message in context: 
http://elecraft.365791.n2.nabble.com/P3-firm-ware-tp7562905p7562907.html
Sent from the Elecraft mailing list archive at Nabble.com.
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[Elecraft] K3 Software

[Michael Marx]

I was wondering if anyone is aware of any software for adjusting Config and 
regular menu items on the K3?  Or is anyone developing any?  Also is anyone 
developing any frig control software for the K3 (rather than general purpose 
software like HRD or N4PY).  HRD is pretty good, but since being taken over is 
getting unstable.  Also, it still won't allow adjustment of config menu items. 

Also, to chip in my 2 cents worth about an earlier post about a matching high 
quality power supply my answer is YES, I would be interested in one.

73,
Mike

Michael Marx
sndtu...@vacuumtubes.com

www.vacuumtubes.com
SND Tube Sales
105 N. Division St.
Bonne Terre, MO  63628



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Re: [Elecraft] Mic. RODE Procaster & K3 experience

[Jim Brown]

On 9/18/2012 1:56 AM, Gordan Hribar wrote:
> I wonder if any of you have experience with R0DE PROCASTER microphone 
> attached on K3?

It should work, but why would you want to spend this much for a ham 
mic?  This mic is a cosmetic copy of the very excellent ElectroVoice 
RE20, but without the carefully controlled bass response of the RE20, so 
it's going to have lots of bass boost used close-up.  If you MUST use a 
pro mic, the ones to consider are the EV RE11, RE16, RE20, RE27, or the 
Shure SM54. Some are long discontinued, but dynamic mics last forever, 
and it's safe to buy them used from reliable sources.

With ANY pro mic you'll need a lot of TXEQ to make them sound good with 
a ham rig.  I've used an RE16 and an RE20 from my recording mic cabinet 
with ham rigs when I didn't have a decent ham mic. I got them to sound 
very good, but only with lots of low cut and high boost.

A couple of years ago, a member of our contesting club who runs an audio 
company found the Yamaha CM500 boom mic headset and turned us on to 
them. He organized a group purchase, and many of us bought them.  They 
sound really good, and they're also really comfortable. No problem 
wearing is for a long contest weekend.  Widely available for about $45, 
shipped to CONUS.

73, Jim K9YC
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Re: [Elecraft] K3 Software

[Gerald Manthey]

Michael
Are you running the latest version of HRD?
It is stable and getting better.
 On Sep 18, 2012 11:43 AM, "Michael Marx"  wrote:

> I was wondering if anyone is aware of any software for adjusting Config
> and regular menu items on the K3?  Or is anyone developing any?  Also is
> anyone developing any frig control software for the K3 (rather than general
> purpose software like HRD or N4PY).  HRD is pretty good, but since being
> taken over is getting unstable.  Also, it still won't allow adjustment of
> config menu items.
>
> Also, to chip in my 2 cents worth about an earlier post about a matching
> high quality power supply my answer is YES, I would be interested in one.
>
> 73,
> Mike
>
> Michael Marx
> sndtu...@vacuumtubes.com
>
> www.vacuumtubes.com
> SND Tube Sales
> 105 N. Division St.
> Bonne Terre, MO  63628
>
>
>
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[Elecraft] K-Line Addition - DC Power Supply (Suggestion)

[Howard Hoyt]

Depending on cost, I'd bite, and it would be a nice addition to the K-line.  I 
have picked through several switchers, none of which were dead RF quiet.  I 
ended up defaulting to my Xantrex HPD 30-10 lab supply, which is a hybrid 
switching front-end/linear tracking output regulator.  It is dead RF quiet, but 
I am a bit scared to leave a supply that can output above 15 volts on my 
Elecraft.  I'd also like to free that supply back up for other uses.

Being linear regulators, the Astron supplies are probably pretty RF quiet, but 
for what they cost they are big and can be acoustically noisy (I have heard 
several buzzing transformers), not to mention containing antiquated circuitry.  
LM723 regulators are not the quietest nor most stable linear reg ICs available 
these days, and have limited regulation bandwidth in stable implementations.  
Considering these factors i have been reticent to buy one.

I bet Elecraft can outdo what is available in a pretty little matching package.

Howie - WA4PSC

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Re: [Elecraft] K-Line Addition - DC Power Supply (Suggestion)

[N5GE]

That seems a good idea except for two reasons:

1. It wouldn't work for me unless it could handle 100 amps.  I have
2m and 70cm RF amps that require 50 or 60 amps and I have just about
finished replacing all of my 12v wall warts with a buss that runs
them with power from that same 13.8v PS that supplies the KLine. That
PS also trickle charges three large Server Room backup batteries that
kick in when there is a power outage.

2. I doubt Elecraft would want to get into that business due to the
already stiff competition in that area of manufacture.

On Tue, 18 Sep 2012 07:27:51 -0700 (PDT), rich kennedy
 wrote:

>How do Elecraft users feel about the possible addition of a
>high-quality DC power supply that matches both the physical dimensions and
>veneer of the existing K-Line?  The power
>supply could even be sized to set above/below the new KAT500 and should, IMHO,
>have multiple DC outlets such as Powerpoles® and screw lugs.  I’d be willing 
>to pay a premium for a quiet DC
>power supply with very low emission characteristics.  Thanks, 73, Rich, K3VAT
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Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA Lifetime Member

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[Elecraft] Power supply?

[William Levy]

Don't think we need Elecraft to build us a power supply. It's a pretty low tech 
endeavor and the supply market is infinite. It makes the same sense as me going 
into the car biz! 

Bill N2WL


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[Elecraft] My power supply solution

[Alan Price]

I normally don't enter into these conversations, but I will this time.  I have 
found the perfect solution for me.  I do a lot of building of Elecraft kits.  
The amplifier for a K2 requires two power supplies in the testing stage.  I 
have two Astron VS-35M supplies.  Between them I have enough current capability 
to handle anything I have on my bench, as well as my radios.  They are simple 
and have meters for both voltage and current, and are free of RF noise.  Just 
my solution. 73AlanW1HYV 
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Re: [Elecraft] K3 Software

[Rick Ruhl]

That what  was thinking.. even Simon said our latest version of HRD was more
stable than any of our HRD version.

Eric has a K3 on the way to me this week, you'll see LOTS of good stuff for
V6 .

We've only fixed 30,000 minor bugs and 1,000 major bugs guess that's not
enough 

A lot of what we can do with HRD is based on the CAT control, if Eric and
company haven't put it in the CAT control, then no software can do it.

Rick - W4PC

http://www.ham-radio-deluxe.com


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gerald Manthey
Sent: Tuesday, September 18, 2012 12:47 PM
To: Michael Marx
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 Software

Michael
Are you running the latest version of HRD?
It is stable and getting better.
 On Sep 18, 2012 11:43 AM, "Michael Marx"  wrote:

> I was wondering if anyone is aware of any software for adjusting 
> Config and regular menu items on the K3?  Or is anyone developing any?  
> Also is anyone developing any frig control software for the K3 (rather 
> than general purpose software like HRD or N4PY).  HRD is pretty good, 
> but since being taken over is getting unstable.  Also, it still won't 
> allow adjustment of config menu items.
>
> Also, to chip in my 2 cents worth about an earlier post about a 
> matching high quality power supply my answer is YES, I would be interested
in one.
>
> 73,
> Mike
>
> Michael Marx
> sndtu...@vacuumtubes.com
>
> www.vacuumtubes.com
> SND Tube Sales
> 105 N. Division St.
> Bonne Terre, MO  63628
>
>
>
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>
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Re: [Elecraft] K3 Software

[Rick Ruhl]

Let me restate that, he said it was the most stable version ever.. :)



-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Rick Ruhl
Sent: Tuesday, September 18, 2012 1:24 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 Software

That what  was thinking.. even Simon said our latest version of HRD was more
stable than any of our HRD version.

Eric has a K3 on the way to me this week, you'll see LOTS of good stuff for
V6 .

We've only fixed 30,000 minor bugs and 1,000 major bugs guess that's not
enough 

A lot of what we can do with HRD is based on the CAT control, if Eric and
company haven't put it in the CAT control, then no software can do it.

Rick - W4PC

http://www.ham-radio-deluxe.com


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gerald Manthey
Sent: Tuesday, September 18, 2012 12:47 PM
To: Michael Marx
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 Software

Michael
Are you running the latest version of HRD?
It is stable and getting better.
 On Sep 18, 2012 11:43 AM, "Michael Marx"  wrote:

> I was wondering if anyone is aware of any software for adjusting 
> Config and regular menu items on the K3?  Or is anyone developing any?
> Also is anyone developing any frig control software for the K3 (rather 
> than general purpose software like HRD or N4PY).  HRD is pretty good, 
> but since being taken over is getting unstable.  Also, it still won't 
> allow adjustment of config menu items.
>
> Also, to chip in my 2 cents worth about an earlier post about a 
> matching high quality power supply my answer is YES, I would be 
> interested
in one.
>
> 73,
> Mike
>
> Michael Marx
> sndtu...@vacuumtubes.com
>
> www.vacuumtubes.com
> SND Tube Sales
> 105 N. Division St.
> Bonne Terre, MO  63628
>
>
>
> __
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> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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Re: [Elecraft] K3 Software

[Gerald Manthey]

I have HRD running my K2, K3, and my KX3. I have Windows 7, and XP running
them. Make sure all the settings are correct and this is by far IMHO the
best suite of software for digital modes.
Gerald- KC6CNN
On Sep 18, 2012 12:32 PM, "Rick Ruhl"  wrote:

> Let me restate that, he said it was the most stable version ever.. :)
>
>
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Rick Ruhl
> Sent: Tuesday, September 18, 2012 1:24 PM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] K3 Software
>
> That what  was thinking.. even Simon said our latest version of HRD was
> more
> stable than any of our HRD version.
>
> Eric has a K3 on the way to me this week, you'll see LOTS of good stuff for
> V6 .
>
> We've only fixed 30,000 minor bugs and 1,000 major bugs guess that's
> not
> enough 
>
> A lot of what we can do with HRD is based on the CAT control, if Eric and
> company haven't put it in the CAT control, then no software can do it.
>
> Rick - W4PC
>
> http://www.ham-radio-deluxe.com
>
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gerald Manthey
> Sent: Tuesday, September 18, 2012 12:47 PM
> To: Michael Marx
> Cc: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] K3 Software
>
> Michael
> Are you running the latest version of HRD?
> It is stable and getting better.
>  On Sep 18, 2012 11:43 AM, "Michael Marx" 
> wrote:
>
> > I was wondering if anyone is aware of any software for adjusting
> > Config and regular menu items on the K3?  Or is anyone developing any?
> > Also is anyone developing any frig control software for the K3 (rather
> > than general purpose software like HRD or N4PY).  HRD is pretty good,
> > but since being taken over is getting unstable.  Also, it still won't
> > allow adjustment of config menu items.
> >
> > Also, to chip in my 2 cents worth about an earlier post about a
> > matching high quality power supply my answer is YES, I would be
> > interested
> in one.
> >
> > 73,
> > Mike
> >
> > Michael Marx
> > sndtu...@vacuumtubes.com
> >
> > www.vacuumtubes.com
> > SND Tube Sales
> > 105 N. Division St.
> > Bonne Terre, MO  63628
> >
> >
> >
> > __
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> >
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Re: [Elecraft] My power supply solution

[Jim Rhodes]

What I would like to see empty K3 matching box and maybe a W2 matching box.
Then we could build whatever we wanted in them.

On Tue, Sep 18, 2012 at 12:17 PM, Alan Price  wrote:

>
> I normally don't enter into these conversations, but I will this time.  I
> have found the perfect solution for me.  I do a lot of building of Elecraft
> kits.  The amplifier for a K2 requires two power supplies in the testing
> stage.  I have two Astron VS-35M supplies.  Between them I have enough
> current capability to handle anything I have on my bench, as well as my
> radios.  They are simple and have meters for both voltage and current, and
> are free of RF noise.  Just my solution. 73AlanW1HYV
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-- 
Jim K0XU
j...@rhodesend.net
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[Elecraft] KX3 - Reminder - Special Event Station K2N

[cx7tt]

Stan,

Thanks for your diligence, your enthusiasm and service.

Enjoy the experiences (KX-3, DE-776, and Begali paddles).

73

Tom/CX7TT
Capt USN-RET
FLY NAVY!
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[Elecraft] Fw: Power supply?

[Richard Fjeld]

Just a comment and a question.
I take care of our club's repeaters. One of the power supplies failed this 
weekend. I watched as smoke came out of it.  It is 20+ years old.  Here is 
the comment;  make sure the fuse on the primary is properly matched, even if 
you choose to go lighter.  (It's not good to work the PS to the max anyway.) 
It may not be possible to fuse a power supply to protect everything in it, 
but at least you can protect the transformer. (I realize this thread is 
talking small for the KX3, but the subject is power supplies.)

Question;  Elecraft radios are protected against low voltage, but what about 
high voltage? I'm wondering if a FUSED Crowbar circuit would be practical. 
The fuse (if any) on the PS 12V leads  is behind the crowbar.  It seems to 
me that a versatle fused crowbar circuit would be good.
Has anybody been there and done that? Maybe someone sells one.  I'm past the 
age when I quit keeping up on components and their specs, so I appreciate 
comments aye or nay.

Rich, n0ce


- Original Message - 
From: "William Levy" 
To: 
Sent: Tuesday, September 18, 2012 12:02 PM
Subject: [Elecraft] Power supply?


> Don't think we need Elecraft to build us a power supply. It's a pretty low 
> tech endeavor and the supply market is infinite. It makes the same sense 
> as me going into the car biz!
>
> Bill N2WL
>
>
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[Elecraft] K3 utility problem

[Ed Tobias]

After doing downloads with no problems for four years I'm now running into a 
problem.  Using K3 utility v 1.12.3.28 the utility won't hold a connection to 
the K3.  No matter what the connection speed, the connection is interrupted.  
Sometimes it gets as far as showing which version of the MCU is installed.  
Sometimes it reaches the FPF version.  Sometimes it even gets to DSP1 and 2.  
But, when I click "Send all new firmware to K3" I get a "no connection" error.  
At the bottom of the utility box it continues to say "Attempting to connect to 
K3 on port Com8 at x speed."

I'm using Elecraft's USB/RS232 cable and that cable works fine with my logging 
programs, (none of which are open and they don't seem to be conflicting).  My 
OS is Windows XP.

Any thoughts?

Ed, KR3E
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Re: [Elecraft] K3 utility problem

[Matthew Zilmer]

If you're using the P3, try bypassing it by going directly from the PC to the 
K3.

Matt Zilmer
Consultant - Product Management Dept.
Magellan Navigation / MiTAC Digital Corp.
Tel: (909) 394-6052
Cell: (909) 730-6552
In status quo voluntas non sufficit


-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ed Tobias
Sent: Tuesday, September 18, 2012 11:31 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3 utility problem

After doing downloads with no problems for four years I'm now running into a 
problem.  Using K3 utility v 1.12.3.28 the utility won't hold a connection to 
the K3.  No matter what the connection speed, the connection is interrupted.  
Sometimes it gets as far as showing which version of the MCU is installed.  
Sometimes it reaches the FPF version.  Sometimes it even gets to DSP1 and 2.  
But, when I click "Send all new firmware to K3" I get a "no connection" error.  
At the bottom of the utility box it continues to say "Attempting to connect to 
K3 on port Com8 at x speed."

I'm using Elecraft's USB/RS232 cable and that cable works fine with my logging 
programs, (none of which are open and they don't seem to be conflicting).  My 
OS is Windows XP.

Any thoughts?

Ed, KR3E
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[Elecraft] [K2] FS: EA3BLQ K2DI & K2DI-PCI Unbuilt Kits

[Darrell Bellerive]

For sale a complete unbuilt kit of the EA3BLQ (sk) Digital interface for 
the K2. This is V.III of the K2DI and the K2DI-PCI.

The details of the kit are at http://www.qsl.net/ea3blq/k2di_pci_tec_ang.htm

The manual is at 
http://www.qsl.net/ea3blq/downloads/k2di-pci_const_manual.pdf

I bought these a few years ago and have never gotten around to building 
them, and need some money, so they are offered for sale.

I can email photos if required.

$100 US including shipping via the postal system to Canada or the US. 
Paypal or postal money orders.

For those in the US, please note that the kit will be shipped from 
Canada and import taxes and fees may be charged by US Customs. The 
customs declaration will have the value of the kit less postage costs.

Please email me direct if interested.

73,
Darrell
VA7TO


-- 
Darrell Bellerive
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Re: [Elecraft] K3 utility problem

[Dick Dievendorff]

Sounds like a flakey connection of some sort. RS-232 connector jack screws
reasonably tight? Anything moved lately?  Can you simplify the cable path
from PC to K3 by (temporarily) removing any USB hubs, extension codes, P3s
etc and connect the USB to Serial adapter directly to the K3.

If it's still flakey, can you borrow another USB to Serial adapter long
enough to test that?

I have seen USB to Serial adapters degrade over time, but not often.  

Dick, K6KR


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ed Tobias
Sent: Tuesday, September 18, 2012 11:31 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3 utility problem

After doing downloads with no problems for four years I'm now running into a
problem.  Using K3 utility v 1.12.3.28 the utility won't hold a connection
to the K3.  No matter what the connection speed, the connection is
interrupted.  Sometimes it gets as far as showing which version of the MCU
is installed.  Sometimes it reaches the FPF version.  Sometimes it even gets
to DSP1 and 2.  But, when I click "Send all new firmware to K3" I get a "no
connection" error.  At the bottom of the utility box it continues to say
"Attempting to connect to K3 on port Com8 at x speed."

I'm using Elecraft's USB/RS232 cable and that cable works fine with my
logging programs, (none of which are open and they don't seem to be
conflicting).  My OS is Windows XP.

Any thoughts?

Ed, KR3E
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[Elecraft] K 2/100 and a KAP500

[W0WFH Bill]

Hello all;
 
I have a fully loaded K 2/100 now and I am looking to continue to build my 
Elecraft line
has anyone used a KAP 500 with a K2/100??
If so what luck have you had?
Thanks 73, Bill W0WFH
Linn, Mo. 
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[Elecraft] FS: MFJ-259B antenna analyzer

[John Shadle]

MFJ-259B antenna analyzer for sale. Excellent, working condition. HF
through 180 MHz. Includes an AC adapter, as well.

New price is $289.95.
Optional Pelican 1200 hard-sided case can be added for $32 (retails for ~$40).

MFJ-259B only is $240.00
MFJ-259B + Pelican 1200 case is $272.00

Buyer to pay actual shipping for their choice of carrier (USPS, UPS, FedEx).

Prefer USPS MO for payment.

Please contact off list if interested.

Thanks!
-john W4PAH
Madison, WI
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Re: [Elecraft] Soldering stations available

[Greg Beat]

The Pace ST-75 De-soldering station and accessories has been SOLD.

Thank you for queries and interest.

Greg
w9gb

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Re: [Elecraft] Fw: Power supply?

“...It seems to me that a versatile fused crowbar circuit would be good.Has 
anybody been there and done that? Maybe someone sells one”

See the Voltage Protector article in the “Articles” section of my website at 
www.ad5x.com.

Phil – AD5X 

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Re: [Elecraft] K-Line Addition - DC Power Supply (Suggestion)

[Don Wilhelm]

In my opinion, power supplies should be relegated to something like the 
AC receptacle on the wall or the 12 volt battery under the hood of an 
automobile.  It should do its thing, but not be obvious.  IMHO the place 
for a power supply is on the floor under the operating desk (or 
workbench).  No need for meters on the supply itself, I have measurement 
stuff above the tabletop.  I use an Astron 35 linear at the operating 
position and have an Astron SS-30 switcher at the workbench (along with 
several other lower current supplies). There are no 13.8 volt power 
supplies above the desktop - If I need other voltages, yes, I do have a 
+/- 15 volt supply along with +5V on the workbench along with a variable 
voltage positive supply for special needs - but I don't think those are 
relevant for powering the K2, K3, or KX3.

Bottom line, power supplies are on the floor out of the way and treated 
just as an energy source.

So, my answer to your question is NO.  The RigRunner does sit on the 
desktop with fuses to match the wire sizes exiting from it.
I do not think it is in the best interests of Elecraft to attempt a 
power supply design given that it would require UL compliance 
certification (as well as other countries certification) which can be an 
expensive process for a power supply that would likely have a volume of 
less than 10,000 units even at product life end.

I would put this in the "it would be nice -- but" bucket.

73,
Don W3FPR

On 9/18/2012 10:27 AM, rich kennedy wrote:
> How do Elecraft users feel about the possible addition of a
> high-quality DC power supply that matches both the physical dimensions and
> veneer of the existing K-Line?  The power
> supply could even be sized to set above/below the new KAT500 and should, IMHO,
> have multiple DC outlets such as Powerpoles® and screw lugs.  I’d be willing 
> to pay a premium for a quiet DC
> power supply with very low emission characteristics.  Thanks, 73, Rich, K3VAT
>

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Re: [Elecraft] laptop power supply to power KX3

[Bill Tubbs]

After sending my note about using the little MFJ power supply at 2.89 amps, I 
realized that it works fine on my FT-817D at 5 watts but would obviously be 
taxed at the full 12 watts of the KX3. So fuggetabowdit. 

Now I'M looking for a sufficient supply for the KX3 ;-)

Bill
WK6A

Sent from my iPhone

On Sep 18, 2012, at 4:44 AM, Johnny  wrote:

> Yes , correct , laptop supplies are often RF noisy.
> 
> Sent from my  iPhone 4
> 
> "Fred Townsend"  於 2012年9月18日 下午2:04 寫道：
> 
>> Jeff, caution.  Laptop power external supplies are designed to be followed
>> by precision internal regulators that handle the logic voltages and charging
>> the battery. The external supplies are not well regulated and can be quite
>> noisy.  They may not be the best supplies for ham rigs.
>> 73
>> Fred, AE6QL
>> 
>> -Original Message-
>> From: elecraft-boun...@mailman.qth.net
>> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jeff Herr
>> Sent: Monday, September 17, 2012 6:40 PM
>> To: 'Elecraft Reflector'
>> Subject: [Elecraft] laptop power supply to power KX3
>> 
>> While at work I went through our stock of power supplies for the various
>> makes of laptops we use.
>> I found that Toshiba supplies are specified 15v and ranged in current
>> capability from 2.5 amps and up.
>> 
>> Dell, Lenovo, HP, Acer, Asus all use 19v supplies.
>> 
>> Those Toshiba supplies are very small.
>> 
>> WW6L
>> 
>> 
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Re: [Elecraft] K-Line Addition - DC Power Supply (Suggestion)

[Joe Subich, W4TV]

> I do not think it is in the best interests of Elecraft to attempt a
> power supply design given that it would require UL compliance
> certification (as well as other countries certification) which can be
> an expensive process for a power supply that would likely have a
> volume of less than 10,000 units even at product life end.

*IF* Elecraft were to produce a power supply, the most economical
solution would be to use a modular OEM switchers that already has UL,
CE, CSA, etc. certifications and wrap it in an Elecraft case with IEC
cord, additional filtering, external power switch, and maybe metering.
OEM supplies - available in many quality levels, form factors and price
points - are used by several other manufacturers as the core of their
"matching" (or internal) power supply offerings.

73,

... Joe, W4TV


On 9/18/2012 4:44 PM, Don Wilhelm wrote:
> In my opinion, power supplies should be relegated to something like the
> AC receptacle on the wall or the 12 volt battery under the hood of an
> automobile.  It should do its thing, but not be obvious.  IMHO the place
> for a power supply is on the floor under the operating desk (or
> workbench).  No need for meters on the supply itself, I have measurement
> stuff above the tabletop.  I use an Astron 35 linear at the operating
> position and have an Astron SS-30 switcher at the workbench (along with
> several other lower current supplies). There are no 13.8 volt power
> supplies above the desktop - If I need other voltages, yes, I do have a
> +/- 15 volt supply along with +5V on the workbench along with a variable
> voltage positive supply for special needs - but I don't think those are
> relevant for powering the K2, K3, or KX3.
>
> Bottom line, power supplies are on the floor out of the way and treated
> just as an energy source.
>
> So, my answer to your question is NO.  The RigRunner does sit on the
> desktop with fuses to match the wire sizes exiting from it.
> I do not think it is in the best interests of Elecraft to attempt a
> power supply design given that it would require UL compliance
> certification (as well as other countries certification) which can be an
> expensive process for a power supply that would likely have a volume of
> less than 10,000 units even at product life end.
>
> I would put this in the "it would be nice -- but" bucket.
>
> 73,
> Don W3FPR
>
> On 9/18/2012 10:27 AM, rich kennedy wrote:
>> How do Elecraft users feel about the possible addition of a
>> high-quality DC power supply that matches both the physical dimensions and
>> veneer of the existing K-Line?  The power
>> supply could even be sized to set above/below the new KAT500 and should, 
>> IMHO,
>> have multiple DC outlets such as Powerpoles® and screw lugs.  I’d be willing 
>> to pay a premium for a quiet DC
>> power supply with very low emission characteristics.  Thanks, 73, Rich, K3VAT
>>
>
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Re: [Elecraft] K-Line Addition - DC Power Supply (Suggestion)

[Ron D'Eau Claire]

I guess it depends upon which Astron model you are working with. I've worked
with a great many RS and RM Astron supplies in Ham and Commercial systems
over the years and have never encountered one that made more than a very,
very quiet hum. 

I'm not sure what you mean about the regulator not being "quiet". The LM723
is a simple linear I.C.; no switching noise and no acoustical noise. 

The popular RS and RM series have both automatic over-voltage and
over-current shut-down that protects both the power supply and any equipment
connected to it. 

In decades of use working with a great number of Astron supplies - many of
which are in 24/7 service operating commercial equipment - I've yet to see a
regulator failure - or any Astron failure for that matter. I'm not
suggesting that they won't fail, but I've yet to see it happen in,
conservatively, tens of thousands of operating hours.

My station Astron resides on a shelf out of the way under the operating
table so having a matching appearance with the rest of the K-line is not an
issue for me.  

73, Ron AC7AC



-Original Message-


Being linear regulators, the Astron supplies are probably pretty RF quiet,
but for what they cost they are big and can be acoustically noisy (I have
heard several buzzing transformers), not to mention containing antiquated
circuitry.  LM723 regulators are not the quietest nor most stable linear reg
ICs available these days, and have limited regulation bandwidth in stable
implementations.  Considering these factors i have been reticent to buy one.

I bet Elecraft can outdo what is available in a pretty little matching
package.

Howie - WA4PSC

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Re: [Elecraft] laptop power supply to power KX3

[Don Wilhelm]

Bill,

I would suggest an Astron 20 amp supply (or even the 35 amp linear).  
Yes, it is overkill for the 12 watt KX3, but that is no problem, the 
current will not exceed what the connected device (the KX3) needs even 
though the supply is capable of much more current. When you also have 
the KXPA3, you will need that extra current.  You also have other 12 
volt powered devices around the shack, so the extra current rating will 
help with powering those devices.

For those who want to homebrew for the basic KX3, I suggest you look at 
the article in QST from November 1993 page 27 for a 5 amp regulated 13.8 
volt 5 amp power supply with crowbar overvoltage protection.  We are 
hams, so think "build your own"  It is a good philisophy/

73,
Don W3FPR

On 9/18/2012 4:53 PM, Bill Tubbs wrote:
> After sending my note about using the little MFJ power supply at 2.89 amps, I 
> realized that it works fine on my FT-817D at 5 watts but would obviously be 
> taxed at the full 12 watts of the KX3. So fuggetabowdit.
>
> Now I'M looking for a sufficient supply for the KX3 ;-)
>
> Bill
> WK6A
>
> Sent from my iPhone
>
> On Sep 18, 2012, at 4:44 AM, Johnny  wrote:
>
>> Yes , correct , laptop supplies are often RF noisy.
>>
>> Sent from my  iPhone 4
>>
>> "Fred Townsend"  於 2012年9月18日 下午2:04 寫道：
>>
>>> Jeff, caution.  Laptop power external supplies are designed to be followed
>>> by precision internal regulators that handle the logic voltages and charging
>>> the battery. The external supplies are not well regulated and can be quite
>>> noisy.  They may not be the best supplies for ham rigs.
>>> 73
>>> Fred, AE6QL
>>>
>>> -Original Message-
>>> From: elecraft-boun...@mailman.qth.net
>>> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jeff Herr
>>> Sent: Monday, September 17, 2012 6:40 PM
>>> To: 'Elecraft Reflector'
>>> Subject: [Elecraft] laptop power supply to power KX3
>>>
>>> While at work I went through our stock of power supplies for the various
>>> makes of laptops we use.
>>> I found that Toshiba supplies are specified 15v and ranged in current
>>> capability from 2.5 amps and up.
>>>
>>> Dell, Lenovo, HP, Acer, Asus all use 19v supplies.
>>>
>>> Those Toshiba supplies are very small.
>>>
>>> WW6L
>>>
>>>
>>> __
>>> 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
>>>
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Re: [Elecraft] K-Line Addition - DC Power Supply (Suggestion)

[Fred Townsend]

I'd like to second Don's comments. Often the difference between a noisy power 
supply and a quiet one is the separation of only a few feet. The idea place for 
the supply is on the floor away from the receiver and freeing desktop space. I 
have mine paralleled with a storage battery too. That saves the QSO when the 
power fails (assuming I can operate in the dark). 
Don mentioned certifications for each country. Don't forget the power source is 
often different from country to country (50/60 hertz and 120/240 vac) or even 
within the country (look at Japan). Building a supply that meets all these 
requirements adds expense. Look at the issues an internal power supply causes 
in the KPA500 even without the concerns of interfering with a receiver. 
73,
Fred, AE6QL

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don Wilhelm
Sent: Tuesday, September 18, 2012 1:44 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K-Line Addition - DC Power Supply (Suggestion)

In my opinion, power supplies should be relegated to something like the AC 
receptacle on the wall or the 12 volt battery under the hood of an automobile.  
It should do its thing, but not be obvious.  IMHO the place for a power supply 
is on the floor under the operating desk (or workbench).  No need for meters on 
the supply itself, I have measurement stuff above the tabletop.  I use an 
Astron 35 linear at the operating position and have an Astron SS-30 switcher at 
the workbench (along with several other lower current supplies). There are no 
13.8 volt power supplies above the desktop - If I need other voltages, yes, I 
do have a 
+/- 15 volt supply along with +5V on the workbench along with a variable
voltage positive supply for special needs - but I don't think those are 
relevant for powering the K2, K3, or KX3.

Bottom line, power supplies are on the floor out of the way and treated just as 
an energy source.

So, my answer to your question is NO.  The RigRunner does sit on the desktop 
with fuses to match the wire sizes exiting from it.
I do not think it is in the best interests of Elecraft to attempt a power 
supply design given that it would require UL compliance certification (as well 
as other countries certification) which can be an expensive process for a power 
supply that would likely have a volume of less than 10,000 units even at 
product life end.

I would put this in the "it would be nice -- but" bucket.

73,
Don W3FPR

On 9/18/2012 10:27 AM, rich kennedy wrote:
> How do Elecraft users feel about the possible addition of a 
> high-quality DC power supply that matches both the physical dimensions 
> and veneer of the existing K-Line?  The power supply could even be 
> sized to set above/below the new KAT500 and should, IMHO, have 
> multiple DC outlets such as Powerpoles® and screw lugs.  I’d be 
> willing to pay a premium for a quiet DC power supply with very low 
> emission characteristics.  Thanks, 73, Rich, K3VAT
>

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Re: [Elecraft] OT: For Sale - Array Solutions AIM 4170 Antenna Analyzer plus extras

[W5RDW]

Like the Elecraft P3, I would be lost w/o the AIM 4170. Had one for a number
of years. It does what it says and more. The TDR function is useful also.
Great technical support. 



-
Roger W5RDW
--
View this message in context: 
http://elecraft.365791.n2.nabble.com/OT-For-Sale-Array-Solutions-AIM-4170-Antenna-Analyzer-plus-extras-tp7562902p7562933.html
Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] K-Line Addition - DC Power Supply (Suggestion)

[Alan Bloom]

On Tue, 2012-09-18 at 14:14 -0700, Ron D'Eau Claire wrote:
...
> I'm not sure what you mean about the regulator not being "quiet". The LM723
> is a simple linear I.C.; no switching noise and no acoustical noise. 
...

It's true that the 723 is a really ancient IC - it was designed back in
the 70's I believe.  It is also true that there are some pitfalls with
using it that can trap the unwary.  But with proper design it can be
made to work just fine.

Alan N1AL


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Re: [Elecraft] K-Line Addition - DC Power Supply (Suggestion)

[N4QS]

I for one would like to see Elecraft produce a power supply optimized for 
the K3 and matching Elecraft accessories.  For years I owned a Kenwood PS-50 
power supply and regretted selling it a few years ago.  It was rock solid 
and absolutely quite and yet matched my TS850S.  I currently own two Astron 
RS-35 power supplies, but they do not have the fit and finish of the 
Kenwood.  Any yes, both of mine have a small but noticeable amount of hum. 
The Kenwood PS-50 fit in an enclosure that is just slightly larger than the 
P3.  I am sure that Elecraft would ensure top notch rf filtering, light 
weight and with plenty of auxilliary outputs for running various Elecraft 
devices including the KRC2, P3 and KAT500.

See this link:  http://www.universal-radio.com/catalog/hamps/ps50.html

Dave, N4QS

- Original Message - 
From: "Joe Subich, W4TV" 
To: 
Sent: Tuesday, September 18, 2012 4:06 PM
Subject: Re: [Elecraft] K-Line Addition - DC Power Supply (Suggestion)



> I do not think it is in the best interests of Elecraft to attempt a
> power supply design given that it would require UL compliance
> certification (as well as other countries certification) which can be
> an expensive process for a power supply that would likely have a
> volume of less than 10,000 units even at product life end.

*IF* Elecraft were to produce a power supply, the most economical
solution would be to use a modular OEM switchers that already has UL,
CE, CSA, etc. certifications and wrap it in an Elecraft case with IEC
cord, additional filtering, external power switch, and maybe metering.
OEM supplies - available in many quality levels, form factors and price
points - are used by several other manufacturers as the core of their
"matching" (or internal) power supply offerings.

73,

... Joe, W4TV


On 9/18/2012 4:44 PM, Don Wilhelm wrote:
> In my opinion, power supplies should be relegated to something like the
> AC receptacle on the wall or the 12 volt battery under the hood of an
> automobile.  It should do its thing, but not be obvious.  IMHO the place
> for a power supply is on the floor under the operating desk (or
> workbench).  No need for meters on the supply itself, I have measurement
> stuff above the tabletop.  I use an Astron 35 linear at the operating
> position and have an Astron SS-30 switcher at the workbench (along with
> several other lower current supplies). There are no 13.8 volt power
> supplies above the desktop - If I need other voltages, yes, I do have a
> +/- 15 volt supply along with +5V on the workbench along with a variable
> voltage positive supply for special needs - but I don't think those are
> relevant for powering the K2, K3, or KX3.
>
> Bottom line, power supplies are on the floor out of the way and treated
> just as an energy source.
>
> So, my answer to your question is NO.  The RigRunner does sit on the
> desktop with fuses to match the wire sizes exiting from it.
> I do not think it is in the best interests of Elecraft to attempt a
> power supply design given that it would require UL compliance
> certification (as well as other countries certification) which can be an
> expensive process for a power supply that would likely have a volume of
> less than 10,000 units even at product life end.
>
> I would put this in the "it would be nice -- but" bucket.
>
> 73,
> Don W3FPR
>
> On 9/18/2012 10:27 AM, rich kennedy wrote:
>> How do Elecraft users feel about the possible addition of a
>> high-quality DC power supply that matches both the physical dimensions 
>> and
>> veneer of the existing K-Line?  The power
>> supply could even be sized to set above/below the new KAT500 and should, 
>> IMHO,
>> have multiple DC outlets such as Powerpoles® and screw lugs.  I’d be 
>> willing to pay a premium for a quiet DC
>> power supply with very low emission characteristics.  Thanks, 73, Rich, 
>> K3VAT
>>
>
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Re: [Elecraft] laptop power supply to power KX3

[Bill Tubbs]

I actually have a 20-amp Astron, as well as a 20-amp Icom supply, but I was 
hoping for something in the middle. If I were just going to consider using only 
the KX3 i suppose a 6-7 Amp supply would do the trick, and I would think it 
might be no bigger than the KX3 itself, no?

Bill
WK6A

Sent from my iPhone

On Sep 18, 2012, at 2:16 PM, Don Wilhelm  wrote:

> Bill,
> 
> I would suggest an Astron 20 amp supply (or even the 35 amp linear).  Yes, it 
> is overkill for the 12 watt KX3, but that is no problem, the current will not 
> exceed what the connected device (the KX3) needs even though the supply is 
> capable of much more current. When you also have the KXPA3, you will need 
> that extra current.  You also have other 12 volt powered devices around the 
> shack, so the extra current rating will help with powering those devices.
> 
> For those who want to homebrew for the basic KX3, I suggest you look at the 
> article in QST from November 1993 page 27 for a 5 amp regulated 13.8 volt 5 
> amp power supply with crowbar overvoltage protection.  We are hams, so think 
> "build your own"  It is a good philisophy/
> 
> 73,
> Don W3FPR
> 
> On 9/18/2012 4:53 PM, Bill Tubbs wrote:
>> After sending my note about using the little MFJ power supply at 2.89 amps, 
>> I realized that it works fine on my FT-817D at 5 watts but would obviously 
>> be taxed at the full 12 watts of the KX3. So fuggetabowdit.
>> 
>> Now I'M looking for a sufficient supply for the KX3 ;-)
>> 
>> Bill
>> WK6A
>> 
>> Sent from my iPhone
>> 
>> On Sep 18, 2012, at 4:44 AM, Johnny  wrote:
>> 
>>> Yes , correct , laptop supplies are often RF noisy.
>>> 
>>> Sent from my  iPhone 4
>>> 
>>> "Fred Townsend"  於 2012年9月18日 下午2:04 寫道：
>>> 
 Jeff, caution.  Laptop power external supplies are designed to be followed
 by precision internal regulators that handle the logic voltages and 
 charging
 the battery. The external supplies are not well regulated and can be quite
 noisy.  They may not be the best supplies for ham rigs.
 73
 Fred, AE6QL
 
 -Original Message-
 From: elecraft-boun...@mailman.qth.net
 [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jeff Herr
 Sent: Monday, September 17, 2012 6:40 PM
 To: 'Elecraft Reflector'
 Subject: [Elecraft] laptop power supply to power KX3
 
 While at work I went through our stock of power supplies for the various
 makes of laptops we use.
 I found that Toshiba supplies are specified 15v and ranged in current
 capability from 2.5 amps and up.
 
 Dell, Lenovo, HP, Acer, Asus all use 19v supplies.
 
 Those Toshiba supplies are very small.
 
 WW6L
 
 
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Re: [Elecraft] K-Line Addition - DC Power Supply (Suggestion)

[Ron D'Eau Claire]

Regarding the certifications for mains power equipment running off of various 
mains circuits in various countries, don't forget that Elecraft has already 
done that with the KPA500. 

73 Ron AC7AC

-Original Message-

...Don mentioned certifications for each country. Don't forget the power source 
is often different from country to country (50/60 hertz and 120/240 vac) or 
even within the country (look at Japan). Building a supply that meets all these 
requirements adds expense. Look at the issues an internal power supply causes 
in the KPA500 even without the concerns of interfering with a receiver. 
73,
Fred, AE6QL


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Re: [Elecraft] K-Line Addition - DC Power Supply (Suggestion)

[Vic, K2VCO]

I've fixed two Astrons for friends. One had a burned-out IC and the 
other had a damaged board where the capacitor mounting screws had 
loosened and generated heat. Both failed without producing overvoltage.

I have one that I've been using for perhaps 15 years with no problems.

On 9/18/12 2:14 PM, Ron D'Eau Claire wrote:
> I guess it depends upon which Astron model you are working with. I've worked
> with a great many RS and RM Astron supplies in Ham and Commercial systems
> over the years and have never encountered one that made more than a very,
> very quiet hum.
>
> I'm not sure what you mean about the regulator not being "quiet". The LM723
> is a simple linear I.C.; no switching noise and no acoustical noise.
>
> The popular RS and RM series have both automatic over-voltage and
> over-current shut-down that protects both the power supply and any equipment
> connected to it.
>
> In decades of use working with a great number of Astron supplies - many of
> which are in 24/7 service operating commercial equipment - I've yet to see a
> regulator failure - or any Astron failure for that matter. I'm not
> suggesting that they won't fail, but I've yet to see it happen in,
> conservatively, tens of thousands of operating hours.
>
> My station Astron resides on a shelf out of the way under the operating
> table so having a matching appearance with the rest of the K-line is not an
> issue for me.
>
> 73, Ron AC7AC
>
>
>
> -Original Message-
>
>
> Being linear regulators, the Astron supplies are probably pretty RF quiet,
> but for what they cost they are big and can be acoustically noisy (I have
> heard several buzzing transformers), not to mention containing antiquated
> circuitry.  LM723 regulators are not the quietest nor most stable linear reg
> ICs available these days, and have limited regulation bandwidth in stable
> implementations.  Considering these factors i have been reticent to buy one.
>
> I bet Elecraft can outdo what is available in a pretty little matching
> package.
>
> Howie - WA4PSC


-- 
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/
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Re: [Elecraft] K-Line Addition - DC Power Supply (Suggestion)

[hawley, charles j jr]

The Astron supplies usually have a crowbar on the output which shorts the 
output if the voltage rises above 15 Volts.

Sent from my iPad

On Sep 18, 2012, at 5:51 PM, "Vic, K2VCO"  wrote:

> I've fixed two Astrons for friends. One had a burned-out IC and the 
> other had a damaged board where the capacitor mounting screws had 
> loosened and generated heat. Both failed without producing overvoltage.
> 
> I have one that I've been using for perhaps 15 years with no problems.
> 
> On 9/18/12 2:14 PM, Ron D'Eau Claire wrote:
>> I guess it depends upon which Astron model you are working with. I've worked
>> with a great many RS and RM Astron supplies in Ham and Commercial systems
>> over the years and have never encountered one that made more than a very,
>> very quiet hum.
>> 
>> I'm not sure what you mean about the regulator not being "quiet". The LM723
>> is a simple linear I.C.; no switching noise and no acoustical noise.
>> 
>> The popular RS and RM series have both automatic over-voltage and
>> over-current shut-down that protects both the power supply and any equipment
>> connected to it.
>> 
>> In decades of use working with a great number of Astron supplies - many of
>> which are in 24/7 service operating commercial equipment - I've yet to see a
>> regulator failure - or any Astron failure for that matter. I'm not
>> suggesting that they won't fail, but I've yet to see it happen in,
>> conservatively, tens of thousands of operating hours.
>> 
>> My station Astron resides on a shelf out of the way under the operating
>> table so having a matching appearance with the rest of the K-line is not an
>> issue for me.
>> 
>> 73, Ron AC7AC
>> 
>> 
>> 
>> -Original Message-
>> 
>> 
>> Being linear regulators, the Astron supplies are probably pretty RF quiet,
>> but for what they cost they are big and can be acoustically noisy (I have
>> heard several buzzing transformers), not to mention containing antiquated
>> circuitry.  LM723 regulators are not the quietest nor most stable linear reg
>> ICs available these days, and have limited regulation bandwidth in stable
>> implementations.  Considering these factors i have been reticent to buy one.
>> 
>> I bet Elecraft can outdo what is available in a pretty little matching
>> package.
>> 
>> Howie - WA4PSC
> 
> 
> -- 
> Vic, K2VCO
> Fresno CA
> http://www.qsl.net/k2vco/
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Re: [Elecraft] laptop power supply to power KX3

[Don Wilhelm]

Bill,

If it sits on the floor, what is the problem.   No meters in your face, 
just good DC power provided to the rigrunner.  The fuse sets the current 
supplied to the transceiver.  The KX3 will only draw 3 amps on transmit 
at full power.  The maximum current available from the power supply has 
no meaning other that the requirements of the load  cannot exceed the 
power supply ratings.  In other words, one cannot power a 100 watt 
amplifier from a 6 ampere power supply.

I detect that there are many monitoring this thread who do not 
understand the voltage, current. power relationship as it relates to 
DC.  I do not want to enlighten all, but some of the questions have gone 
below the level that all radio amateurs  should understand from basic 
principles of Ohms Law - some of the most fundamental equations relating 
voltage, current, and power.  If there is not a basic understanding of 
those parameters, there is a great communications loss.  I am sorry, but 
I cannot "spoon feed" those who do not have a grasp of those basic 
electrical parameters.  If it was not on your amateur radio exam, then 
you can find it in the ARRL Handbook Electrical Laws and Circuits chapter.
It is simple - voltage equals current times resistance, Power equals 
voltage times current - fundamental formulas, but I feel that many hams 
do not have any concept of those parameters - this is basic, entry level 
stuff.

73,
Don W3FPR

On 9/18/2012 6:40 PM, Bill Tubbs wrote:
> I actually have a 20-amp Astron, as well as a 20-amp Icom supply, but I was 
> hoping for something in the middle. If I were just going to consider using 
> only the KX3 i suppose a 6-7 Amp supply would do the trick, and I would think 
> it might be no bigger than the KX3 itself, no?
>
> Bill
> WK6A
>
> Sent from my iPhone
>
> On Sep 18, 2012, at 2:16 PM, Don Wilhelm  wrote:
>
>> Bill,
>>
>> I would suggest an Astron 20 amp supply (or even the 35 amp linear).  Yes, 
>> it is overkill for the 12 watt KX3, but that is no problem, the current will 
>> not exceed what the connected device (the KX3) needs even though the supply 
>> is capable of much more current. When you also have the KXPA3, you will need 
>> that extra current.  You also have other 12 volt powered devices around the 
>> shack, so the extra current rating will help with powering those devices.
>>
>> For those who want to homebrew for the basic KX3, I suggest you look at the 
>> article in QST from November 1993 page 27 for a 5 amp regulated 13.8 volt 5 
>> amp power supply with crowbar overvoltage protection.  We are hams, so think 
>> "build your own"  It is a good philisophy/
>>
>> 73,
>> Don W3FPR
>>
>> On 9/18/2012 4:53 PM, Bill Tubbs wrote:
>>> After sending my note about using the little MFJ power supply at 2.89 amps, 
>>> I realized that it works fine on my FT-817D at 5 watts but would obviously 
>>> be taxed at the full 12 watts of the KX3. So fuggetabowdit.
>>>
>>> Now I'M looking for a sufficient supply for the KX3 ;-)
>>>
>>> Bill
>>> WK6A
>>>
>>> Sent from my iPhone
>>>
>>> On Sep 18, 2012, at 4:44 AM, Johnny  wrote:
>>>
 Yes , correct , laptop supplies are often RF noisy.

 Sent from my  iPhone 4

 "Fred Townsend"  於 2012年9月18日 下午2:04 寫道：

> Jeff, caution.  Laptop power external supplies are designed to be followed
> by precision internal regulators that handle the logic voltages and 
> charging
> the battery. The external supplies are not well regulated and can be quite
> noisy.  They may not be the best supplies for ham rigs.
> 73
> Fred, AE6QL
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jeff Herr
> Sent: Monday, September 17, 2012 6:40 PM
> To: 'Elecraft Reflector'
> Subject: [Elecraft] laptop power supply to power KX3
>
> While at work I went through our stock of power supplies for the various
> makes of laptops we use.
> I found that Toshiba supplies are specified 15v and ranged in current
> capability from 2.5 amps and up.
>
> Dell, Lenovo, HP, Acer, Asus all use 19v supplies.
>
> Those Toshiba supplies are very small.
>
> WW6L
>
>
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[Elecraft] Using a K2/100 driving a KPA500

[W0WFH Bill]

I will get it right this time. Sorry 
 
I have a loaded K2/100 and my next Elecraft
project I would like it to be the KPA500 amplifier.  
 
Has anyone used them together??  If so
how it work out?  
 
I will get a K3 one day but now I can only
afford the K2/100.
 
Thanks 73
Bill W0WFH
Linn, Mo.
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[Elecraft] FS K1-2 20m/40m with KAT1

[chris casey]

I have for sale my K1-2 w/KAT1 and backlight mod, all works as it
should and is in mint condition short of a small scratch on the tuning
knob. Used it twice from my desk, needs a good home where it will get
used. Have all manuals etc.

serial no 02044

Pics available on request, would like $350 including shipping to con-us.

Thanks.

-- 

-Chris
N0VRP
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Re: [Elecraft] laptop power supply to power KX3

“After sending my note about using the little MFJ power supply at 2.89 amps, 
I realized that it works fine on my FT-817D at 5 watts but would obviously 
be taxed at the full 12 watts of the KX3. So fuggetabowdit.”

The MFJ supply will power the KX3 just fine at 10 watts.  The KX3 draws 
about 2-amps at 10 watts.  I used the little MFJ supply (which is rated at 
2.8 amps) to power my IC-703 which also put out 10 watts at about 2-amps.

Phil – AD5X 

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[Elecraft] KX3 atu anomalies - or it is me.

[luca de marinis]

Hi,

I completed my KX3 #1715 few days ago and today I went to the park and using a 
Buddipole I tried to make some contacts. Buddipole swr was 1.4 on 20m so I used 
the ATU. It worked fine lowered the swr to 1.0 but then I transmitted I still 
could read a 1.4 swr. I moved up and down the band and tuned again and every 
time the ATU started from 9.9 and did the all cycle. Sometime couldn't go lower 
than 1.4. Sometimes after tuning the power was reduced to 2W

Am I missing something. I did a search on the reflector but didn't show 
anything.

Thank you in advance for your help

Luca
W6LDM
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Re: [Elecraft] K3 Software

[Todd - k1tm]

Have you looked at DX Labs Commander?  The macro capabilities let you adjust
pretty much anything that can be set in the K3 via software control.  You
need to do the customization by developing the macro's, but the end results
are very good.  I run the K3/P3 completely from the keyboard and the mouse. 
The mouse wheel dials the frequency up and down.  Fkeys are set for frequent
operations, and sliders and soft buttons do the rest.  Each macro can have
up to 32 steps.  The only bug I have found is that the NR settings won't
change using the UPB and DNB commands, but that is a K3 known bug.  

73, Todd



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View this message in context: 
http://elecraft.365791.n2.nabble.com/K3-Software-tp7562908p7562945.html
Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] laptop power supply to power KX3

[KU7Y]

When in AZ, I run the KX3 with a 3 Amp RS supply.

I have seen no problems with it.

At one time I had 4 or 5 of these little supplies but down to 2 or 3 
now. gave the others away!

I bought them several years ago and have used them for many items, including 
my NorCal 40a, a couple of the MFJ CW rigs and etc.

Like the old Timex commercial, they just keep on ticking!

OK, back in my hole,

Ron, KU7Y
SOWP 5545M
Arizona Outlaws Contest Club
Brenda, AZ (Winter)
Caldwell, ID (Summer)
k...@qsl.net
http://www.hatpinsandmore.com
KX3 #0062 

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[Elecraft] K3 & Remote Rig Questions

[Dennis]

I'm in the process of setting up a remote K3 Twin Station, and
am having a few minor problems.  I'm addressing this to the
Elecraft reflector as I think the problems are correctable thru
the K3 setup.

1. Is there a software command that will put the Control K3
into Terminal mode?  I know I can do it by pushing and holding
in the CONFIG key, and I've been over the Programmers Reference
but don't see either a software command or a  key #
that will do it.  I also don't see anything in the Firmware Update
Section on how to do this.

2. If my Control K3 is in Terminal mode, I'm connected to
the remote unit, I then turn my Control K3 off, do something
else, and come back an hour later and turn my Control K3
on (and it connects again), the audio on my Control K3 is now
on.  The noise is adjustable via the Control K3 volume control,
but there its just noise- just no audio.  If I take the Control K3
out of Term mode to Norm mode, the audio is again muted.
How can I mute the local audio when I turn on the rig?  Again,
I searched through the most current Programmers Reference
on the web, but can't find a software command to mute that
audio, and if I did, I would probably mute the audio at both
the Control and Remote K3s.  The Firmware update area just
says the Control K3 audio will be muted.

Dennis W1UE

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Re: [Elecraft] laptop power supply to power KX3

[David Moorman]

The specs say the KX3 current draw is typically one to two amps when 
transmitting, so your 2.89 amp PS should do fine.

Dave,  K9SW



On Sep 18, 2012, at 3:53 PM, Bill Tubbs  wrote:

> After sending my note about using the little MFJ power supply at 2.89 amps, I 
> realized that it works fine on my FT-817D at 5 watts but would obviously be 
> taxed at the full 12 watts of the KX3. So fuggetabowdit. 
> 
> Now I'M looking for a sufficient supply for the KX3 ;-)
> 
> Bill
> WK6A
> 
> Sent from my iPhone
> 
> On Sep 18, 2012, at 4:44 AM, Johnny  wrote:
> 
>> Yes , correct , laptop supplies are often RF noisy.
>> 
>> Sent from my  iPhone 4
>> 
>> "Fred Townsend"  於 2012年9月18日 下午2:04 寫道：
>> 
>>> Jeff, caution.  Laptop power external supplies are designed to be followed
>>> by precision internal regulators that handle the logic voltages and charging
>>> the battery. The external supplies are not well regulated and can be quite
>>> noisy.  They may not be the best supplies for ham rigs.
>>> 73
>>> Fred, AE6QL
>>> 
>>> -Original Message-
>>> From: elecraft-boun...@mailman.qth.net
>>> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jeff Herr
>>> Sent: Monday, September 17, 2012 6:40 PM
>>> To: 'Elecraft Reflector'
>>> Subject: [Elecraft] laptop power supply to power KX3
>>> 
>>> While at work I went through our stock of power supplies for the various
>>> makes of laptops we use.
>>> I found that Toshiba supplies are specified 15v and ranged in current
>>> capability from 2.5 amps and up.
>>> 
>>> Dell, Lenovo, HP, Acer, Asus all use 19v supplies.
>>> 
>>> Those Toshiba supplies are very small.
>>> 
>>> WW6L
>>> 
>>> 
>>> __
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Re: [Elecraft] KX3 atu anomalies - or it is me.

[Don Wilhelm]

Lucia,

You say that you had an SWR of 1.4, then used the ATU which lowered the 
SWR to 1.0
OK, That was on the KX3 display.

Please tell us where you were reading the continued 1.4 SWR.  The KX3 
display does not show the SWR during transmit - only during a TUNE.
The SWR shown externally to the KX2 ATU will not change, so if you are 
using an external device, you will not see any  change in the SWR reading.

The KX3 ATU will reduce the SWR between the KX3 output PA and the input 
to the KXATU3 to the value shown during on the KX3 display during a 
TUNE, but the SWR between the KXATU3 and the antenna (as measured by an 
external device) will not change.

73,
Don W3FPR

On 9/18/2012 8:14 PM, luca de marinis wrote:
> Hi,
>
> I completed my KX3 #1715 few days ago and today I went to the park and using 
> a Buddipole I tried to make some contacts. Buddipole swr was 1.4 on 20m so I 
> used the ATU. It worked fine lowered the swr to 1.0 but then I transmitted I 
> still could read a 1.4 swr. I moved up and down the band and tuned again and 
> every time the ATU started from 9.9 and did the all cycle. Sometime couldn't 
> go lower than 1.4. Sometimes after tuning the power was reduced to 2W
>
> Am I missing something. I did a search on the reflector but didn't show 
> anything.
>
> Thank you in advance for your help
>
>

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Re: [Elecraft] laptop power supply to power KX3

[Matt Maguire]

On 19/09/2012, at 9:08 AM, Don Wilhelm  wrote:
> I detect that there are many monitoring this thread who do not 
> understand the voltage, current. power relationship as it relates to 
> DC.

Perhaps these links will help those people:
http://gsuryalss.wordpress.com/tag/ohm-amp-volt/
http://xkcd.com/643/

73, Matt VK2ACL

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Re: [Elecraft] KX3 atu anomalies - or it is me.

[luca de marinis]

Hi Don, I read the 1.4 SWR on my MFJ 259b then tuned with the KX3 atu to 1.0

On transmitting the swr graph showed peaks near to 2 and if I press the XMIT 
(tune) the reading is about 1.4 same as without ATU.

Luca




On Sep 18, 2012, at 7:12 PM, Don Wilhelm  wrote:

> Lucia,
> 
> You say that you had an SWR of 1.4, then used the ATU which lowered the 
> SWR to 1.0
> OK, That was on the KX3 display.
> 
> Please tell us where you were reading the continued 1.4 SWR.  The KX3 
> display does not show the SWR during transmit - only during a TUNE.
> The SWR shown externally to the KX2 ATU will not change, so if you are 
> using an external device, you will not see any  change in the SWR reading.
> 
> The KX3 ATU will reduce the SWR between the KX3 output PA and the input 
> to the KXATU3 to the value shown during on the KX3 display during a 
> TUNE, but the SWR between the KXATU3 and the antenna (as measured by an 
> external device) will not change.
> 
> 73,
> Don W3FPR
> 
> On 9/18/2012 8:14 PM, luca de marinis wrote:
>> Hi,
>> 
>> I completed my KX3 #1715 few days ago and today I went to the park and using 
>> a Buddipole I tried to make some contacts. Buddipole swr was 1.4 on 20m so I 
>> used the ATU. It worked fine lowered the swr to 1.0 but then I transmitted I 
>> still could read a 1.4 swr. I moved up and down the band and tuned again and 
>> every time the ATU started from 9.9 and did the all cycle. Sometime couldn't 
>> go lower than 1.4. Sometimes after tuning the power was reduced to 2W
>> 
>> Am I missing something. I did a search on the reflector but didn't show 
>> anything.
>> 
>> Thank you in advance for your help
>> 
>> 
> 
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Re: [Elecraft] HL-45B with KX3

[NM6E_QRP]

What setting did you use for the ACC2 output to connect to the amp?

TX-Low? (ground to key amp?)

I have been meaning to try it with my Acom 1011 amp as that is also a TX Low 
setting here at the home QTH in Dallas. 

I am buying a friends HL-200BDX that's sitting in his closet in the Bay Area to 
use in the Cal QSO Party from San Francisco in a few weeks with the KX3 driving 
it to about 180 watts with 10 watts drive (theoretically).  

Let me know!

Javier NM6E/5


Please excuse any mis-spelling 

Sent from my iPhone

On Aug 15, 2012, at 11:02 PM, "Bill Conkling" wrote:

> I'm using a 50B, works well.
> 
> 
> ...bill nr4c 
> Sent from my Verizon Wireless Droid
> 
> -Original message-
> From: Doug Person 
> To: elecraft@mailman.qth.net
> Sent: Thu, Aug 16, 2012 02:39:43 GMT+00:00
> Subject: [Elecraft] HL-45B with KX3
> 
> I just received my KX3 kit.  Once built, I intend to try it with my 
> Tokyo Hy-Power HL-45B amplifier.  I get an easy 50 watts out with my 
> FT-817.  I wonder if anyone else has tried this?
> 
> 73, Doug -- K0DXV
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Re: [Elecraft] KX3 atu anomalies - or it is me.

[Don Wilhelm]

Lucia,

Is your KX3 menu parameter for the ATU MD set to "AUTO"  If not, the 
results may be as you have experienced.

73,
Don W3FPR

On 9/18/2012 10:36 PM, luca de marinis wrote:
> Hi Don, I read the 1.4 SWR on my MFJ 259b then tuned with the KX3 atu to 1.0
>
> On transmitting the swr graph showed peaks near to 2 and if I press the XMIT 
> (tune) the reading is about 1.4 same as without ATU.
>
> Luca
>
>
>
>
> On Sep 18, 2012, at 7:12 PM, Don Wilhelm  wrote:
>
>> Lucia,
>>
>> You say that you had an SWR of 1.4, then used the ATU which lowered the
>> SWR to 1.0
>> OK, That was on the KX3 display.
>>
>> Please tell us where you were reading the continued 1.4 SWR.  The KX3
>> display does not show the SWR during transmit - only during a TUNE.
>> The SWR shown externally to the KX2 ATU will not change, so if you are
>> using an external device, you will not see any  change in the SWR reading.
>>
>> The KX3 ATU will reduce the SWR between the KX3 output PA and the input
>> to the KXATU3 to the value shown during on the KX3 display during a
>> TUNE, but the SWR between the KXATU3 and the antenna (as measured by an
>> external device) will not change.
>>
>> 73,
>> Don W3FPR
>>
>> On 9/18/2012 8:14 PM, luca de marinis wrote:
>>> Hi,
>>>
>>> I completed my KX3 #1715 few days ago and today I went to the park and 
>>> using a Buddipole I tried to make some contacts. Buddipole swr was 1.4 on 
>>> 20m so I used the ATU. It worked fine lowered the swr to 1.0 but then I 
>>> transmitted I still could read a 1.4 swr. I moved up and down the band and 
>>> tuned again and every time the ATU started from 9.9 and did the all cycle. 
>>> Sometime couldn't go lower than 1.4. Sometimes after tuning the power was 
>>> reduced to 2W
>>>
>>> Am I missing something. I did a search on the reflector but didn't show 
>>> anything.
>>>
>>> Thank you in advance for your help
>>>
>>>
>> __
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Re: [Elecraft] KX3 atu anomalies - or it is me.

[Don Wilhelm]

Lucia,

The Elecraft tuner (I don't care if it is a KAT2, KAT1, KXT1 o KXAT3)  
cannot change the the SWR of the antenna itself.  The ATU will tune the 
antenna to an acceptable SWR so the PA  transistor in the transceiver 
are happy.  If you measure the SWR between the Tuner and the antenna, 
you will not see any change.  The internal tuner does change the 
impedance that is seen by the PA transistors, and that is the goal of 
antenna tuners.

73,
Don W3FPR

On 9/18/2012 10:36 PM, luca de marinis wrote:
> Hi Don, I read the 1.4 SWR on my MFJ 259b then tuned with the KX3 atu to 1.0
>
> On transmitting the swr graph showed peaks near to 2 and if I press the XMIT 
> (tune) the reading is about 1.4 same as without ATU.
>
> Luca
>
>
>
>
> On Sep 18, 2012, at 7:12 PM, Don Wilhelm  wrote:
>
>> Lucia,
>>
>> You say that you had an SWR of 1.4, then used the ATU which lowered the
>> SWR to 1.0
>> OK, That was on the KX3 display.
>>
>> Please tell us where you were reading the continued 1.4 SWR.  The KX3
>> display does not show the SWR during transmit - only during a TUNE.
>> The SWR shown externally to the KX2 ATU will not change, so if you are
>> using an external device, you will not see any  change in the SWR reading.
>>
>> The KX3 ATU will reduce the SWR between the KX3 output PA and the input
>> to the KXATU3 to the value shown during on the KX3 display during a
>> TUNE, but the SWR between the KXATU3 and the antenna (as measured by an
>> external device) will not change.
>>
>> 73,
>> Don W3FPR
>>
>> On 9/18/2012 8:14 PM, luca de marinis wrote:
>>> Hi,
>>>
>>> I completed my KX3 #1715 few days ago and today I went to the park and 
>>> using a Buddipole I tried to make some contacts. Buddipole swr was 1.4 on 
>>> 20m so I used the ATU. It worked fine lowered the swr to 1.0 but then I 
>>> transmitted I still could read a 1.4 swr. I moved up and down the band and 
>>> tuned again and every time the ATU started from 9.9 and did the all cycle. 
>>> Sometime couldn't go lower than 1.4. Sometimes after tuning the power was 
>>> reduced to 2W
>>>
>>> Am I missing something. I did a search on the reflector but didn't show 
>>> anything.
>>>
>>> Thank you in advance for your help
>>>
>>>
>> __
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Re: [Elecraft] KX3 atu anomalies - or it is me.

[luca de marinis]

Hi Don, yes I agree with you that if I measure the swr between the radio and 
the antenna I will have the same value I measured with the antenna analyzer.

The Automatic Tuner is installed and the mane ATU MD on AUTO

My point is: 

Why do I read ON THE KX3 swr GRAPH a peak value close to 2.0 when I transmit?

Why do I read the real SWR of the antenna - in my case 1.4 - when I hold XMIT 
to activate TUNE?

Thanks

Luca








On Sep 18, 2012, at 7:12 PM, Don Wilhelm  wrote:

> Lucia,
> 
> You say that you had an SWR of 1.4, then used the ATU which lowered the 
> SWR to 1.0
> OK, That was on the KX3 display.
> 
> Please tell us where you were reading the continued 1.4 SWR.  The KX3 
> display does not show the SWR during transmit - only during a TUNE.
> The SWR shown externally to the KX2 ATU will not change, so if you are 
> using an external device, you will not see any  change in the SWR reading.
> 
> The KX3 ATU will reduce the SWR between the KX3 output PA and the input 
> to the KXATU3 to the value shown during on the KX3 display during a 
> TUNE, but the SWR between the KXATU3 and the antenna (as measured by an 
> external device) will not change.
> 
> 73,
> Don W3FPR
> 
> On 9/18/2012 8:14 PM, luca de marinis wrote:
>> Hi,
>> 
>> I completed my KX3 #1715 few days ago and today I went to the park and using 
>> a Buddipole I tried to make some contacts. Buddipole swr was 1.4 on 20m so I 
>> used the ATU. It worked fine lowered the swr to 1.0 but then I transmitted I 
>> still could read a 1.4 swr. I moved up and down the band and tuned again and 
>> every time the ATU started from 9.9 and did the all cycle. Sometime couldn't 
>> go lower than 1.4. Sometimes after tuning the power was reduced to 2W
>> 
>> Am I missing something. I did a search on the reflector but didn't show 
>> anything.
>> 
>> Thank you in advance for your help
>> 
>> 
> 
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Re: [Elecraft] KX3 atu anomalies - or it is me.

[Matt Maguire]

By "SWR graph", you mean the bar graph on the display of the KX3, right? If so, 
are you sure it is set to measure VSWR rather than compression?

If you have initiated a tuning cycle with the KXAT3, and subsequently hold the 
XMIT/TUNE button, and the radio reports a VSWR of 1.4, then this means that the 
KXAT3 has not matched the impedance of the antenna system. This would be the 
case, for example, is the KXAT3 was set in bypass mode.

As Don notes below, if you put an SWR meter between the KX3 and the antenna, 
then the KXAT3 will have no effect whatsoever on the reading of this meter 
(after all, the KXAT3 is matching the impedance between the antenna system and 
the PA stage inside the KX3, and has no effect all on the VSWR on the section 
of transmission line between the KXAT3 and the antenna).

If the SWR graph in your KX3 is set to read VSWR, and the KXAT3 has matched the 
antenna ad reported a VSWR of 1.0, and you see the SWR graph jumping around 
during transmit, then this could indicate flashover in the KXAT3. Normally this 
should only happen if the antenna system is very far away from 50 ohms. This is 
not likely to be the case here, if you indeed measured the VSWR of the antenna 
system independently with the MFJ antenna analyser, and found it only to be 
1.4:1.  

73, Matt VK2ACL



On 19/09/2012, at 12:36 PM, luca de marinis  wrote:

> Hi Don, I read the 1.4 SWR on my MFJ 259b then tuned with the KX3 atu to 1.0
> 
> On transmitting the swr graph showed peaks near to 2 and if I press the XMIT 
> (tune) the reading is about 1.4 same as without ATU.
> 
> Luca
> 
> 
> 
> 
> On Sep 18, 2012, at 7:12 PM, Don Wilhelm  wrote:
> 
>> Lucia,
>> 
>> You say that you had an SWR of 1.4, then used the ATU which lowered the 
>> SWR to 1.0
>> OK, That was on the KX3 display.
>> 
>> Please tell us where you were reading the continued 1.4 SWR.  The KX3 
>> display does not show the SWR during transmit - only during a TUNE.
>> The SWR shown externally to the KX2 ATU will not change, so if you are 
>> using an external device, you will not see any  change in the SWR reading.
>> 
>> The KX3 ATU will reduce the SWR between the KX3 output PA and the input 
>> to the KXATU3 to the value shown during on the KX3 display during a 
>> TUNE, but the SWR between the KXATU3 and the antenna (as measured by an 
>> external device) will not change.
>> 
>> 73,
>> Don W3FPR
>> 
>> On 9/18/2012 8:14 PM, luca de marinis wrote:
>>> Hi,
>>> 
>>> I completed my KX3 #1715 few days ago and today I went to the park and 
>>> using a Buddipole I tried to make some contacts. Buddipole swr was 1.4 on 
>>> 20m so I used the ATU. It worked fine lowered the swr to 1.0 but then I 
>>> transmitted I still could read a 1.4 swr. I moved up and down the band and 
>>> tuned again and every time the ATU started from 9.9 and did the all cycle. 
>>> Sometime couldn't go lower than 1.4. Sometimes after tuning the power was 
>>> reduced to 2W
>>> 
>>> Am I missing something. I did a search on the reflector but didn't show 
>>> anything.
>>> 
>>> Thank you in advance for your help
>>> 
>>> 
>> 
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Re: [Elecraft] KX3 atu anomalies - or it is me.

[luca de marinis]

Thank you Matt,



> By "SWR graph", you mean the bar graph on the display of the KX3, right? If 
> so, are you sure it is set to measure VSWR rather than compression? 
No, I read it on the SWR of course.
> 
> If you have initiated a tuning cycle with the KXAT3, and subsequently hold 
> the XMIT/TUNE button, and the radio reports a VSWR of 1.4, then this means 
> that the KXAT3 has not matched the impedance of the antenna system. This 
> would be the case, for example, is the KXAT3 was set in bypass mode.
It is not on bypass mode.
> 
> As Don notes below, if you put an SWR meter between the KX3 and the antenna, 
> then the KXAT3 will have no effect whatsoever on the reading of this meter 
> (after all, the KXAT3 is matching the impedance between the antenna system 
> and the PA stage inside the KX3, and has no effect all on the VSWR on the 
> section of transmission line between the KXAT3 and the antenna).
I don't own an external swr meter so no, I didn't read between the radio and 
the antenna.
> 
> If the SWR graph in your KX3 is set to read VSWR, and the KXAT3 has matched 
> the antenna ad reported a VSWR of 1.0, and you see the SWR graph jumping 
> around during transmit, then this could indicate flashover in the KXAT3. 
> Normally this should only happen if the antenna system is very far away from 
> 50 ohms. This is not likely to be the case here, if you indeed measured the 
> VSWR of the antenna system independently with the MFJ antenna analyser, and 
> found it only to be 1.4:1.  

This seems to be the case. So is it normal or not? Any idea how to fix it?

Thanks again and I apologize for my English that apparently isn't good enough 
to explain what happened to me.

Cheers.

Luca
> 
> 73, Matt VK2ACL
> 
> 
> 
> On 19/09/2012, at 12:36 PM, luca de marinis  wrote:
> 
>> Hi Don, I read the 1.4 SWR on my MFJ 259b then tuned with the KX3 atu to 1.0
>> 
>> On transmitting the swr graph showed peaks near to 2 and if I press the XMIT 
>> (tune) the reading is about 1.4 same as without ATU.
>> 
>> Luca
>> 
>> 
>> 
>> 
>> On Sep 18, 2012, at 7:12 PM, Don Wilhelm  wrote:
>> 
>>> Lucia,
>>> 
>>> You say that you had an SWR of 1.4, then used the ATU which lowered the 
>>> SWR to 1.0
>>> OK, That was on the KX3 display.
>>> 
>>> Please tell us where you were reading the continued 1.4 SWR.  The KX3 
>>> display does not show the SWR during transmit - only during a TUNE.
>>> The SWR shown externally to the KX2 ATU will not change, so if you are 
>>> using an external device, you will not see any  change in the SWR reading.
>>> 
>>> The KX3 ATU will reduce the SWR between the KX3 output PA and the input 
>>> to the KXATU3 to the value shown during on the KX3 display during a 
>>> TUNE, but the SWR between the KXATU3 and the antenna (as measured by an 
>>> external device) will not change.
>>> 
>>> 73,
>>> Don W3FPR
>>> 
>>> On 9/18/2012 8:14 PM, luca de marinis wrote:
 Hi,
 
 I completed my KX3 #1715 few days ago and today I went to the park and 
 using a Buddipole I tried to make some contacts. Buddipole swr was 1.4 on 
 20m so I used the ATU. It worked fine lowered the swr to 1.0 but then I 
 transmitted I still could read a 1.4 swr. I moved up and down the band and 
 tuned again and every time the ATU started from 9.9 and did the all cycle. 
 Sometime couldn't go lower than 1.4. Sometimes after tuning the power was 
 reduced to 2W
 
 Am I missing something. I did a search on the reflector but didn't show 
 anything.
 
 Thank you in advance for your help
 
 
>>> 
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>> 
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Re: [Elecraft] KX3 ATU

[vk4tux]

Don, When you say "The ATU will tune the antenna to an acceptable SWR", you
are contradicting yourself, because as you rightly said the tuner does not
change the antenna feedpoint swr.

So we tune the transceiver to the feedline length feeding the antenna. that
feedline length is important 
regarding the 'measured' swr. A 1/2 wl will show the antenna feedpoint swr
or impedance (with analyser).
At the connection to the transceiver before any builtin or ext tuner. The
indicated swr on the transceiver or ext tuner display shows the feed side of
the tuner swr.

In theory the swr along the feedline maintains value, but it's a very
different story when you measure it.
The 1/2 wl feedline connected to a high swr antenna feedpoint shows high swr
at the tx feedline end, but cut the feedline at the 1/4wl point and measure
there for a much different 'indicated' result. 

As the swr detectors in the transceiver or atu use this method also, it
becomes obvious that feedline/coax length becomes a factor in showing the
transceiver a good match when the antenna feedpoint impedance is other than
50 ohms.. 

The best thing you can do in a multiband antenna setups where antenna
feedpoint impedance gets way off desired on certain bands, is to use the
lowest loss feedline possible., because this is where most of your losses
are, not the tuner. Remember only resistance can lose power as heat, not
reactance.

Every signal pass back up and down the feedline until sync radiation release
occurs, loses power with every pass depending on the feedline
specifications.

 

>
Lucia,

The Elecraft tuner (I don't care if it is a KAT2, KAT1, KXT1 o KXAT3)  
cannot change the the SWR of the antenna itself.  The ATU will tune the 
antenna to an acceptable SWR so the PA  transistor in the transceiver 
are happy.  If you measure the SWR between the Tuner and the antenna, 
you will not see any change.  The internal tuner does change the 
impedance that is seen by the PA transistors, and that is the goal of 
antenna tuners.

73,
Don W3FPR

>



--
View this message in context: 
http://elecraft.365791.n2.nabble.com/KX3-ATU-tp7495809p7562956.html
Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] KX3 atu anomalies - or it is me.

[Matt Maguire]

On 19/09/2012, at 2:47 PM, luca de marinis  wrote:

>> If you have initiated a tuning cycle with the KXAT3, and subsequently hold 
>> the XMIT/TUNE button, and the radio reports a VSWR of 1.4, then this means 
>> that the KXAT3 has not matched the impedance of the antenna system. This 
>> would be the case, for example, is the KXAT3 was set in bypass mode.
> It is not on bypass mode.

Just check one more thing: in order to initiate a tuning cycle, you need to 
push the "ATU TUNE" button, not hold the XMIT/TUNE button. If the tuning cycle 
is successful, you should see an indication "1.0-1" come up on the screen. Is 
this what you saw?

>> If the SWR graph in your KX3 is set to read VSWR, and the KXAT3 has matched 
>> the antenna ad reported a VSWR of 1.0, and you see the SWR graph jumping 
>> around during transmit, then this could indicate flashover in the KXAT3. 
>> Normally this should only happen if the antenna system is very far away from 
>> 50 ohms. This is not likely to be the case here, if you indeed measured the 
>> VSWR of the antenna system independently with the MFJ antenna analyser, and 
>> found it only to be 1.4:1.  
> 
> This seems to be the case. So is it normal or not? Any idea how to fix it?

No, this is not normal. If you are quite sure that you have followed the 
suggestions given here and the directions in the owner's manual, then the next 
step would be to get in touch with Elecraft customer support, who can lead you 
through some more detailed troubleshooting.

73, Matt VK2ACL.
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Re: [Elecraft] KX3 atu anomalies - or it is me.

[luca de marinis]

On Sep 18, 2012, at 10:00 PM, Matt Maguire  wrote:

> 
> On 19/09/2012, at 2:47 PM, luca de marinis  wrote:
> 
>>> If you have initiated a tuning cycle with the KXAT3, and subsequently hold 
>>> the XMIT/TUNE button, and the radio reports a VSWR of 1.4, then this means 
>>> that the KXAT3 has not matched the impedance of the antenna system. This 
>>> would be the case, for example, is the KXAT3 was set in bypass mode.
>> It is not on bypass mode.
> 
> Just check one more thing: in order to initiate a tuning cycle, you need to 
> push the "ATU TUNE" button, not hold the XMIT/TUNE button. If the tuning 
> cycle is successful, you should see an indication "1.0-1" come up on the 
> screen. Is this what you saw?
Yes I tuned pushing ATU TUNE and not holding the XMIT/TUNE. After I tuned and 
read 1.0-1 I saw the VSWR graph on the KX3 indicating that there was still SWR 
so I held TUNE to see what the reading was.
> 
>>> If the SWR graph in your KX3 is set to read VSWR, and the KXAT3 has matched 
>>> the antenna ad reported a VSWR of 1.0, and you see the SWR graph jumping 
>>> around during transmit, then this could indicate flashover in the KXAT3. 
>>> Normally this should only happen if the antenna system is very far away 
>>> from 50 ohms. This is not likely to be the case here, if you indeed 
>>> measured the VSWR of the antenna system independently with the MFJ antenna 
>>> analyser, and found it only to be 1.4:1.  
>> 
>> This seems to be the case. So is it normal or not? Any idea how to fix it?
> 
> No, this is not normal. If you are quite sure that you have followed the 
> suggestions given here and the directions in the owner's manual, then the 
> next step would be to get in touch with Elecraft customer support, who can 
> lead you through some more detailed troubleshooting.
> 
I will test again tomorrow and try on a dummy load and see if I see something 
weird. After that I will contact Elecraft as suggested.

Thank you
Luca
> 73, Matt VK2ACL.

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Re: [Elecraft] laptop power supply to power KX3

[Bill Tubbs]

Yeah, I spoke before doing the math. As Don said, the math is simple. P=EI. Or, 
I=P/E. So, I don't know what the KX3 input is but if we say it's 20 watts, 
20/12=1.67 amps. Clearly the MFJ should handle the KX3 at full power, at least 
for non-data modes. Thanks for shaking my cobwebs loose!

Bill
WK6A

Sent from my iPhone

On Sep 18, 2012, at 5:06 PM, "Phil&Debbie"  wrote:

> “After sending my note about using the little MFJ power supply at 2.89 amps, 
> I realized that it works fine on my FT-817D at 5 watts but would obviously 
> be taxed at the full 12 watts of the KX3. So fuggetabowdit.”
> 
> The MFJ supply will power the KX3 just fine at 10 watts.  The KX3 draws 
> about 2-amps at 10 watts.  I used the little MFJ supply (which is rated at 
> 2.8 amps) to power my IC-703 which also put out 10 watts at about 2-amps.
> 
> Phil – AD5X 
> 
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Re: [Elecraft] KX3 ATU

[Matt Maguire]

On 19/09/2012, at 2:48 PM, vk4tux  wrote:

> Don, When you say "The ATU will tune the antenna to an acceptable SWR", you
> are contradicting yourself, because as you rightly said the tuner does not
> change the antenna feedpoint swr.

It is clear from the context that Don meant the ATU will tune (ie. match) the 
antenna *system* to the radio, where the antenna system consists of the ATU, 
antenna and connecting feedline considered as a single unit. This of course 
does not mean that the VSWR is 1:1 everywhere within that system. 

The theory predicts that the measures VSWR will be constant along a *lossless* 
feedline. As you point out, practical feedlines do have losses. This will 
include I^2.R copper losses, but there can be losses from other sources as 
well, such as dielectric losses. Often such losses will be modelled as some 
sort of equivalent series resistance. 

73, Matt VK2ACL
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[Elecraft] My power supply solution

[Edward R Cole]

First off PS are widely available and there is no incentive for 
Elecraft to expend design effort.  IF they decided to offer one it 
would likely be a repackaged PS from a vendor.  And that might be 
desirable to many who want a nice visually integrated station (aka "pretty").

MY station runs 18 bands from 600m thru 9cm at home.  I power the 12v 
equipment with a 50A Astron rack-mounted supply.  It feeds thru about 
12-foot of #4 welding cable to the 30A main Buss fuse at the 
distribution terminal strip.

The 28v equipment runs from two supplies: a Motorola CCS 500w 
repeater supply and a 8A adjustable 22-30v supply (for relays, 
etc.).  13.8v drops to about 13.3v under 25A load.

MY 6m QRO SSPA runs from a HP 50v-50A switching supply (230vac 
input).  And my 2m-8877 runs on a 4kV 1.5A modified commercial supply.

I have a B&K 0-30v 3A bench supply and 0-15v Astron VS-35M on the bench.

The dish runs with a 28v 50A military surplus PS.

73, Ed - KL7UW

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[Elecraft] K-Line DC Supply

[Howard Hoyt]

>From: "Ron D'Eau Claire"  said:
>I'm not sure what you mean about the regulator
>not being "quiet". The LM723 is a simple linear
>I.C.; no switching noise and no acoustical noise.

Hi Ron,

I was referring to the broadband thermal and shot noise present at the Vout 
pass transistor drive output of the regulator itself.  Yes it is a linear 
regulator, but at least with the parts I have used, the 723 internal reference 
voltage and error amp are fairly noisy by modern IC standards. I have tried to 
use these regs in audio equipment and I find a quieter and wider BW regulator 
can be made inexpensively using modern bandgap references and low-noise opamps. 
 I am sure that Elecraft designed their circuitry to have as good internal 
sub-regulators and as high PSRR as possible, but having a really quiet supply 
can't hurt.

Of course, maybe anything better than a 723-based supply is just unnecessary 
overkill:  I do not have an Astron or other 723 supply here, so a good test may 
be to compare a K3 or KX3 powered by a battery, with the same setup powered by 
a supply.  In order to provide the maximum sensitivity, the antenna should be 
disconnected and the RF and AF gains at max to allow hearing farther into the 
rig's own noise floor.  I just performed this test on my KX3 using a Xantrex 
supply (@13.8V, <400uV noise RMS 10Hz-300KHz as measured on an HP3468) I hear 
zero noise level difference between the supply or internal batteries, so if 
this is the case with an Astron, and it's regulation is good enough, then the 
723 based circuit is adequate for this particular application.

I agree with whoever stated that a power supply should be out of the way and 
out of sight; having no controls or displays that we need to see every day 
there is no need for it to take up desk space.  I would like to get a small 
13.8V dedicated supply that could handle a KX3 and the pending KXPA100, but 
others have very different requirements, such as power for multiple hundred 
watt amps, etc.  My feeling based on my experience with the KX3 is that if 
Elecraft made such a supply it would be no compromise for those of us who have 
such a need.  One of the main reasons I would like to see this is the same 
reason I like the Astron: it is made in the US.

Just my $0.02 worth,

Howie - WA4PSC

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Re: [Elecraft] K-Line Addition - DC Power Supply (Suggestion)

[Bill Frantz]

I must say I have a number of projects I would rather have 
Elecraft engineering work on rather than built yet another power 
supply. For example:

   #1: Direct digital computer I/O for the K3, eliminating all the
   A/D and D/A conversions now required between the DSP and the
   computer.

   #2: Full MacIntosh support for all utilities. [And Jim (W4ATK),
   I will try Crossover when I am up to bleeping with my computer
   instead of doing things like building a paddle so I can try to
   become CW competent. Thanks for your offer of assistance, I may
   be in touch some day.]


On 9/18/12 at 16:05, c-haw...@illinois.edu (hawley, charles j 
jr) wrote:

If I need to replace the Icom supply I got at the electronics 
flea market, the Astron supplies have gotten really good press 
on this list.

Cheers - Bill, AE6JV

---
Bill Frantz|"We used to quip that "password" is the most common
408-356-8506   | password. Now it's 'password1.' Who said 
users haven't
www.pwpconsult.com | learned anything about security?" -- Bruce Schneier

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Re: [Elecraft] KX3 ATU

[Adrian]

Matt, Of course I don't question Don's technical stature, however "tuning
the antenna" is a poor choice of explanation, and can give a false
impression to those weak on the subject. Adding 'system' would have been a
good move as you indicate. We tune where we measure.

-Original Message-
From: Matt Maguire [mailto:vk2...@gmail.com] 
Sent: Wednesday, 19 September 2012 3:35 PM
To: vk4tux
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KX3 ATU


On 19/09/2012, at 2:48 PM, vk4tux  wrote:

> Don, When you say "The ATU will tune the antenna to an acceptable 
> SWR", you are contradicting yourself, because as you rightly said the 
> tuner does not change the antenna feedpoint swr.

It is clear from the context that Don meant the ATU will tune (ie. match)
the antenna *system* to the radio, where the antenna system consists of the
ATU, antenna and connecting feedline considered as a single unit. This of
course does not mean that the VSWR is 1:1 everywhere within that system. 

The theory predicts that the measures VSWR will be constant along a
*lossless* feedline. As you point out, practical feedlines do have losses.
This will include I^2.R copper losses, but there can be losses from other
sources as well, such as dielectric losses. Often such losses will be
modelled as some sort of equivalent series resistance. 

73, Matt VK2ACL=

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