[Elecraft] Elecraft CW Net Report

[kevinr]

Good Evening,

   Twenty meters had more noise and QSB than did forty meters. It also 
produced more check ins.  After the twenty meter net I was surprised at 
how quiet the background was on forty meters.  I would rather have the 
noise and not miss the signals.


  Yard work seems to be the theme this week.  With painting projects 
done it's time for gardening.  I'm going to build a few cold frames this 
week.  After the forest thinning I have a lot more light to use.  The 
seedlings should like that.


  The two owl species I mentioned are the Saw Whet and the Northern 
Barred.  Both have distinctive calls which carry for miles.  When I 
first moved into the forest I would get the Saw Whet call mixed up with 
the logger's whistle code.  Then I learned the owl's call is less 
varied.  They use the code to signal when the log is choked and ready to 
haul into the air.



  On 14050.3 kHz at 2200z:

NO8V - John - MI

KL7CW - Rick - AK

K6XK - Roy - IA

W8OV - Dave - TX

K4TO - Dave - KY

AB9V - Mike - IN


  On 7047.5 kHz at z:

K6PJV - Dale - CA

K0DTJ - Brian - CA

K4TO - Dave - KY


   One of these weeks we will get back to hardware stores and lumber 
yards.  The smell of fir fresh from the kiln makes me want to build 
something.  The scent of a greenhouse makes me want to get my fingers dirty.


   Until next week stay sane,

  Kevin.  KD5ONS

-

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Re: [Elecraft] About my capacitor failure (etc.) issue:

[Bob McGraw K4TAX]

I had a ham mention to me that this power supply blew up.  He was somewhat 
annoyed when I ask if anyone was injured in the explosion.  

Folks, for us trying to assist with technical issues, please give complete and 
accurate descriptions.  You will get better answers. 

Bob, K4TAX


Sent from my iPhone

> On Apr 19, 2020, at 10:33 PM, Jim Rhodes  wrote:
> 
> Or sometimes, just to get your attention, they will short out then
> explosively go open with a bang. The is usually no doubt figuring out which
> component is bad.
> 
>> On Sun, Apr 19, 2020, 19:56 Christopher Hoover  wrote:
>> 
>> opens in my limited experience.
>> 
>>> On Sun, Apr 19, 2020 at 4:26 PM Adrian  wrote:
>>> 
>>> When you say 'blow' are you saying it short circuits internally or open
>>> circuits internally due to the event  ?
>>> 
>>> 
>>> Adrian Fewster
>>> 
>>> On 20/4/20 8:07 am, Christopher Hoover wrote:
 You might want to replace the bridge rectifier in that new 35A power
>>> supply.
 
 Yep, right out of the box.
 
 At some point, Astron started shipping RS-35A's with a 25A bridge
 rectifier.   They paralleled two out of four of the 25A diodes twice
>> over
 to make, supposedly, a pair of 50A diodes for center-tapped full-wave
 rectification.  That's not good engineering practice as the diodes in
>>> each
 pair will not share current equally because of differences in Vf and
 tempco. Once one blow, the other will blow shortly after.
 
 After I fixed my own RS-35A with this problem, I've helped several
>> other
 hams fix this same problem in theirs.  Not a random sample, as this is
>>> just
 folks on my local machine and in local clubs.
 
 You can get a 50A bridge in the same package for under $3.
 
 Perhaps Astron has fixed the problem since 
 
 73 de AI6KG  -ch
 
 
 
 
 On Thu, Apr 16, 2020 at 10:28 AM Ray Albers 
>> wrote:
 
> Many to all who posted/responded to my recent post about an
>> electrolytic
> capacitor failure in my power supply.  Lots of very interesting
>> reading
> about peoples' industry experiences - thank you!
> 
> Several have pointed out that using a 20A supply with my K3/100 is
>>> pushing
> close to (or over!) the limit.  Even though I am measuring just 16A at
>>> the
> power level I'm running (and not running anything but the K3 on this
> supply) I agree that I'm skirting the edges. So even though I've been
> getting away with it for a long time, this morning I ordered a 35A
>>> supply.
> I'll probably sleep better.
> 
> 73
> Ray K2HYD
> 
> <
> 
>>> 
>> https://www.avast.com/sig-email?utm_medium=email_source=link_campaign=sig-email_content=webmail_term=icon
> Virus-free.
> www.avast.com
> <
> 
>>> 
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> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
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Re: [Elecraft] About my capacitor failure (etc.) issue:

[Jim Rhodes]

Or sometimes, just to get your attention, they will short out then
explosively go open with a bang. The is usually no doubt figuring out which
component is bad.

On Sun, Apr 19, 2020, 19:56 Christopher Hoover  wrote:

> opens in my limited experience.
>
> On Sun, Apr 19, 2020 at 4:26 PM Adrian  wrote:
>
> > When you say 'blow' are you saying it short circuits internally or open
> > circuits internally due to the event  ?
> >
> >
> > Adrian Fewster
> >
> > On 20/4/20 8:07 am, Christopher Hoover wrote:
> > > You might want to replace the bridge rectifier in that new 35A power
> > supply.
> > >
> > > Yep, right out of the box.
> > >
> > > At some point, Astron started shipping RS-35A's with a 25A bridge
> > > rectifier.   They paralleled two out of four of the 25A diodes twice
> over
> > > to make, supposedly, a pair of 50A diodes for center-tapped full-wave
> > > rectification.  That's not good engineering practice as the diodes in
> > each
> > > pair will not share current equally because of differences in Vf and
> > > tempco. Once one blow, the other will blow shortly after.
> > >
> > > After I fixed my own RS-35A with this problem, I've helped several
> other
> > > hams fix this same problem in theirs.  Not a random sample, as this is
> > just
> > > folks on my local machine and in local clubs.
> > >
> > > You can get a 50A bridge in the same package for under $3.
> > >
> > > Perhaps Astron has fixed the problem since 
> > >
> > > 73 de AI6KG  -ch
> > >
> > >
> > >
> > >
> > > On Thu, Apr 16, 2020 at 10:28 AM Ray Albers 
> wrote:
> > >
> > >> Many to all who posted/responded to my recent post about an
> electrolytic
> > >> capacitor failure in my power supply.  Lots of very interesting
> reading
> > >> about peoples' industry experiences - thank you!
> > >>
> > >> Several have pointed out that using a 20A supply with my K3/100 is
> > pushing
> > >> close to (or over!) the limit.  Even though I am measuring just 16A at
> > the
> > >> power level I'm running (and not running anything but the K3 on this
> > >> supply) I agree that I'm skirting the edges. So even though I've been
> > >> getting away with it for a long time, this morning I ordered a 35A
> > supply.
> > >> I'll probably sleep better.
> > >>
> > >> 73
> > >> Ray K2HYD
> > >>
> > >> <
> > >>
> >
> https://www.avast.com/sig-email?utm_medium=email_source=link_campaign=sig-email_content=webmail_term=icon
> > >> Virus-free.
> > >> www.avast.com
> > >> <
> > >>
> >
> https://www.avast.com/sig-email?utm_medium=email_source=link_campaign=sig-email_content=webmail_term=link
> > >> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
> > >> __
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> > >>
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Re: [Elecraft] Some K4 updates from the engineering department

[Wayne Burdick]

> On Apr 19, 2020, at 7:47 PM, Nolan Kienitz  wrote:
> 
> Wayne & Crew,
> 
> Any granular details about the CW Keyer in the K4?  
> 
> Any possibility of embedding WinKeyer platform?

This is certainly possible, but not currently in the works.


> 
> CW Keying modes?  Will you have Ultimatic, Ultimatic dit and Ultimatic dah 
> added as options?

At present the modes are Iambic A and B, like the K3S and our other 
transceivers. You can control the weight as well. W

We'll be able to add other controls in the future. It'll be "sortof" 
democratic, i.e. we'll weight user request rate and feasibility when deciding 
what to add next. We're in it for the long haul...just as we were when we 
designed the K3. (The K4 is even more modular and extensible, by design.)

73,
Wayne
N6KR


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Re: [Elecraft] K4 features

[Wayne Burdick]

> On Apr 19, 2020, at 7:28 PM, B.  wrote:
> 
> Hi Folks,
> 
> I was looking at the information on the Elecraft website regarding the K4
> and its features and functions and either missed or could not find any
> reference to a couple of items I wanted to know about. Specifically,  I was
> looking for confirmation of, or mention of, if the K4 has the same ability
> to record voice and CW to memory as does the K3s.

Yes, but more of it. 


> Also, will the K4 have the
> 50 memory locations in it that the current P3 has for programming macros and
> if it does, will it be programmable the same way as the P3 or has the
> process been improved?

Improved and extended and still in-progress. The number of memories could be 
expanded to meet any reasonable need.


> Along that same line, will it be possible to save off
> the stored memory information (if there is any), to a file for reloading at
> a later time?

Yes. You'll be able to save the entire radio configuration to a flash drive 
plugged into any of the three USB-A ports, or save configurations to remote 
hosts via Ethernet or USB.

73,
Wayne
N6KR


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Re: [Elecraft] K4 features

[Tox]

Iirc Eric's indicated it would have memory keyer/recorder, and ability to
save station config to a usb key for multiop convenience. Look for the
YouTube vid he recorded st the UK dealer a few months ago, think it was in
there.

Scott
AD6YT

On Sun, Apr 19, 2020, 7:29 PM B.  wrote:

> Hi Folks,
>
> I was looking at the information on the Elecraft website regarding the K4
> and its features and functions and either missed or could not find any
> reference to a couple of items I wanted to know about. Specifically,  I was
> looking for confirmation of, or mention of, if the K4 has the same ability
> to record voice and CW to memory as does the K3s. Also, will the K4 have
> the
> 50 memory locations in it that the current P3 has for programming macros
> and
> if it does, will it be programmable the same way as the P3 or has the
> process been improved? Along that same line, will it be possible to save
> off
> the stored memory information (if there is any), to a file for reloading at
> a later time? I may have missed any reference to these subjects but could
> not find it on the Elecraft website. Maybe these have already been answered
> but I can't seem to locate them. Thanks for any help on this.
>
> 73, Bob AD7Z
>
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Re: [Elecraft] Some K4 updates from the engineering department

[Nolan Kienitz]

Wayne & Crew,

Any granular details about the CW Keyer in the K4?  

Any possibility of embedding WinKeyer platform?

CW Keying modes?  Will you have Ultimatic, Ultimatic dit and Ultimatic dah 
added as options?


73 - ki5io
Nolan Kienitz
Texas



-
73  -  Nolan Kienitz,  KI5IO
--
Sent from: http://elecraft.365791.n2.nabble.com/
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[Elecraft] K4 features

[B.]

Hi Folks,

I was looking at the information on the Elecraft website regarding the K4
and its features and functions and either missed or could not find any
reference to a couple of items I wanted to know about. Specifically,  I was
looking for confirmation of, or mention of, if the K4 has the same ability
to record voice and CW to memory as does the K3s. Also, will the K4 have the
50 memory locations in it that the current P3 has for programming macros and
if it does, will it be programmable the same way as the P3 or has the
process been improved? Along that same line, will it be possible to save off
the stored memory information (if there is any), to a file for reloading at
a later time? I may have missed any reference to these subjects but could
not find it on the Elecraft website. Maybe these have already been answered
but I can't seem to locate them. Thanks for any help on this.

73, Bob AD7Z

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Re: [Elecraft] KATxxx Remote Tuner

[W2xj]

Please don’t talk down to me or many other of us. I’ve been in this hobby for 
over 60 years and I know how things worked both then and now. 

To answer your question about broadcast, many systems consist of series fed 
towers. In a practical world a tower presenting zero reactance is about 35 ohms 
and 50 ohm tower has reactance. Other heights have (generally) higher 
resistance and reactance. In all these cases an ATU at the tower. base is used 
to match both the coax and TX output. The other approach is a grounded tower 
with a unipole (or shunt feed) arrangement. Properly done the feed is tapped 
for zero reactance and the resistance is somewhere 250 ohms. Others tap for 50 
ohms but the reactance is high. These arrangements also require an ATU at the 
tower base. 

On HF, the antenna is multiband and uses open wire feeder. Usually this goes 
straight to the TX which usually has a 300 ohm balanced output. These 
transmitters are still tube devices and their output networks accommodate the 
changing load. 

Sent from my iPad

>> On Apr 19, 2020, at 7:39 PM, ab2tc  wrote:
> Hi,
> 
> I know nothing about BC transmitters and antennas but in our world of
> amateur radio solid state transmitters it is imperative that the
> transmission line presents a load close to 50 ohms resistive to the
> transmitter. The transmitter doesn't care how this is accomplished as long
> as it sees a good match to 50 ohms. The simplest, of course, it to have a
> resonant antenna (close to 50 ohms resistive - resonance is no guarantee of
> a 50 ohm load) and a good low loss 50 ohm coax transmission line. If the
> antenna is far from 50 ohm resistive, a tuner (more correctly called a
> matching network) is required somewhere between the antenna and the
> transmitter. If the actual loss of the transmission line under the
> mismatched condition is not too high, it's perfectly OK to have the tuner
> close to the transmitter. If these conditions are not satisfied, the tuner
> is best located close to the antenna feed point with the extra cost and
> effort that involves.
> 
> AB2TC - Knut
> 
> 
> 
> W2xj wrote
>> You can get an AT-615B from Array Solutions now and do this. I put 10 in a
>> club station for our various wire arrays. They do everything you need.
>> 
>> BTW I disagree about this 50 Ohm antenna thing. In my world of commercial
>> high powered broadcasting 30 MHz and under, there are almost never
>> resonant, matched 50 ohm arrays.  
>> 
>> Sent from my iPad
>> 
>>> On Apr 19, 2020, at 8:41 AM, Richard Thorne 
> 
>> rthorne@
> 
>>  wrote:
>> 
> 
> 
> 
> 
> 
> --
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Re: [Elecraft] K4 capabilities

[Rick Tavan]

What's a complete station?  ;-)

/Rick N6XI

On Sun, Apr 19, 2020 at 11:46 AM Ralph Parker  wrote:

>
> While anxiously waiting in line for the KPA500 to be released, I printed
> out a picture of the front panel
> of the '500, cut it out and placed it on the shelf where the '500 would
> go.
> *Then I could pretend that the station was complete.*
> Almost as good as the real thing!
>
> --

Rick Tavan
Truckee and Saratoga, CA
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Re: [Elecraft] About my capacitor failure (etc.) issue:

[Christopher Hoover]

opens in my limited experience.

On Sun, Apr 19, 2020 at 4:26 PM Adrian  wrote:

> When you say 'blow' are you saying it short circuits internally or open
> circuits internally due to the event  ?
>
>
> Adrian Fewster
>
> On 20/4/20 8:07 am, Christopher Hoover wrote:
> > You might want to replace the bridge rectifier in that new 35A power
> supply.
> >
> > Yep, right out of the box.
> >
> > At some point, Astron started shipping RS-35A's with a 25A bridge
> > rectifier.   They paralleled two out of four of the 25A diodes twice over
> > to make, supposedly, a pair of 50A diodes for center-tapped full-wave
> > rectification.  That's not good engineering practice as the diodes in
> each
> > pair will not share current equally because of differences in Vf and
> > tempco. Once one blow, the other will blow shortly after.
> >
> > After I fixed my own RS-35A with this problem, I've helped several other
> > hams fix this same problem in theirs.  Not a random sample, as this is
> just
> > folks on my local machine and in local clubs.
> >
> > You can get a 50A bridge in the same package for under $3.
> >
> > Perhaps Astron has fixed the problem since 
> >
> > 73 de AI6KG  -ch
> >
> >
> >
> >
> > On Thu, Apr 16, 2020 at 10:28 AM Ray Albers  wrote:
> >
> >> Many to all who posted/responded to my recent post about an electrolytic
> >> capacitor failure in my power supply.  Lots of very interesting reading
> >> about peoples' industry experiences - thank you!
> >>
> >> Several have pointed out that using a 20A supply with my K3/100 is
> pushing
> >> close to (or over!) the limit.  Even though I am measuring just 16A at
> the
> >> power level I'm running (and not running anything but the K3 on this
> >> supply) I agree that I'm skirting the edges. So even though I've been
> >> getting away with it for a long time, this morning I ordered a 35A
> supply.
> >> I'll probably sleep better.
> >>
> >> 73
> >> Ray K2HYD
> >>
> >> <
> >>
> https://www.avast.com/sig-email?utm_medium=email_source=link_campaign=sig-email_content=webmail_term=icon
> >> Virus-free.
> >> www.avast.com
> >> <
> >>
> https://www.avast.com/sig-email?utm_medium=email_source=link_campaign=sig-email_content=webmail_term=link
> >> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
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Re: [Elecraft] Elecraft Digest, Vol 192, Issue 20

[Bob Schumacher via Elecraft]

Regarding K4 Updates:

Chuck KE9UW has a good idea. What he is really suggesting is that the K4 be 
remotely operated by an iPad with the K4 control panel replicated on the touch 
screen. We know that Flex Radio has this with the 6400/6600 series. Will this 
be available with the K4?

W9DBR



Sent from my iPad

> On Apr 19, 2020, at 4:38 PM, elecraft-requ...@mailman.qth.net wrote:
> 
> Send Elecraft mailing list submissions to
>elecraft@mailman.qth.net
> 
> To subscribe or unsubscribe via the World Wide Web, visit
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>elecraft-ow...@mailman.qth.net
> 
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Elecraft digest..."
> 
> 
> Today's Topics:
> 
>   1. K-4 capabilities (Art Suberbielle)
>   2. Re: KX2 sluggish/intermittent VFO display (ab2tc)
>   3. Re: K-4 capabilities (Doug Turnbull)
>   4. KX-2 ATU not working (Peter West)
>   5. KX2 With W9RAN "Versatile T/R Switch" for SDR (James Bennett)
>   6. Re: K3 Utility vs macOS Catalina (David Ferrington, M0XDF)
>   7. Re: K-4 capabilities (Ken B)
>   8. Re: KATxxx Remote Tuner (Jim Brown)
>   9. Re: K-4 capabilities (Mike VE3YF)
>  10. Re: KATxxx Remote Tuner (David Gilbert)
>  11. Re: KATxxx Remote Tuner (David Gilbert)
>  12. Re: K-4 capabilities (Doug Turnbull)
>  13. Re: K-4 capabilities (Barry LaZar)
>  14. Re: K4 capabilities (Ralph Parker)
>  15. Re: K4 capabilities (David Bunte)
>  16. K4 (RALPH TURK)
>  17. Some K4 updates from the engineering department (Wayne Burdick)
>  18. Re: K-4 capabilities (Wayne Burdick)
>  19. Re: Some K4 updates from the engineering department
>  (Richard Zalewski)
>  20. Re: Some K4 updates from the engineering department
>  (hawley, charles j jr)
>  21. Re: Some K4 updates from the engineering department (Rick NK7I)
> 
> 
> --
> 
> Message: 1
> Date: Sun, 19 Apr 2020 11:35:34 -0500
> From: Art Suberbielle 
> To: Elecraft list 
> Subject: [Elecraft] K-4 capabilities
> Message-ID:
>
> Content-Type: text/plain; charset="UTF-8"
> 
> As we all await the arrival of the K-4, I'm wondering if the radio will
> "remember" all of the settings per band. Specifically, I use different RF
> settings per band and have to remember to reset the RF as I go from 160 to
> 20, for example. Will these settings and AF gain, etc be recalled per band?
> 
> Wayne, et al, tell us more about what you've been doing on the software
> design side of the K-4 while "on vacation" at home?
> 
> 73,
> Art KZ5D
> 
> 
> --
> 
> Message: 2
> Date: Sun, 19 Apr 2020 09:49:40 -0700 (MST)
> From: ab2tc 
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] KX2 sluggish/intermittent VFO display
> Message-ID: <1587314980148-0.p...@n2.nabble.com>
> Content-Type: text/plain; charset=UTF-8
> 
> Hi,
> 
> This doesn't sound like an encoder problem to me. Encoders have no memory,
> so if the radio eventually responds to the encoder pulses and displays the
> correct frequency after a delay, that delay must have occurred in the
> microcontroller itself or possibly in the display module if it is an
> "intelligent" one. To me it sounds if the KX2 microcontroller occasionally
> gets overloaded and sluggish in responding to inputs.
> 
> Do you have anything connected to any ports, such as serial port, AUX port,
> etc.? Pardon my ignorance on the KX2 here but most Elecraft radios, even the
> smaller ones, have ports like these. I have seen in the past (maybe not with
> an Elecraft product) radio brought to its knees from hyperactivity on a
> serial port. Disconnect everything that is not essential to local (sitting
> in front of) radio operation and see if the problem goes away.
> 
> AB2TC - Knut  
> 
> 
> 
> Lyle Johnson wrote
>> All encoders in the KX2 are soldered you the control panel board.
>> 
>> 73,
>> 
>> Lyle KK7P 
>> 
>> Sent from my iPhone
>> 
>>> On Apr 19, 2020, at 3:57 AM, Heinz Baertschi 
> 
>> heinz.baertschi@
> 
>>  wrote:
>>> 
>>> ?
>>> Thanks Tom, interesting to know.
>>> 
>>> *When troubleshooting it would still be of great help to know how the KX2
>>> encoder is connected to the main bord - plugged in or soldered?*
>>> 
>>> 73,
>>> Heinz HB9BCB
>>> 
>>> 
>>> 
>>> Tommy wrote
 I have seen the same on my KX2, while dialing it seems to freeze at 
 times for a second or so at a time. Even after being on only a few 
 minutes. Kind of annoying but not too worrying to me. At least for now. 
 Serial # 01927
 
 73 de Tom KB2SMS
 
 
>> On 4/18/20 10:44 AM, Heinz Baertschi wrote:
>>> 
>> 
>> 
>> 
>> 
>> 
>> --
>> Sent from: http://elecraft.365791.n2.nabble.com/
>> 
>> 
>> --
>> 
>> Message: 3
>> Date: Sun, 19 Apr 2020 16:57:57 -
>> From: 

Re: [Elecraft] About my capacitor failure (etc.) issue:

[Don Wilhelm]

If the diode shorts, it Will cause excessive ripple from the half wave 
rectification.
I suspect that the failure mode is an open causing the remaining diode 
to carry the full current, which will cause its eventual failure.


In any case, paralleling two diodes without some form of resistance in 
series will be a prescription for failure.


73,
Don W3FPR

On 4/19/2020 7:24 PM, Adrian wrote:
When you say 'blow' are you saying it short circuits internally or open 
circuits internally due to the event  ?




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Re: [Elecraft] KATxxx Remote Tuner

[ab2tc]

Hi,

I know nothing about BC transmitters and antennas but in our world of
amateur radio solid state transmitters it is imperative that the
transmission line presents a load close to 50 ohms resistive to the
transmitter. The transmitter doesn't care how this is accomplished as long
as it sees a good match to 50 ohms. The simplest, of course, it to have a
resonant antenna (close to 50 ohms resistive - resonance is no guarantee of
a 50 ohm load) and a good low loss 50 ohm coax transmission line. If the
antenna is far from 50 ohm resistive, a tuner (more correctly called a
matching network) is required somewhere between the antenna and the
transmitter. If the actual loss of the transmission line under the
mismatched condition is not too high, it's perfectly OK to have the tuner
close to the transmitter. If these conditions are not satisfied, the tuner
is best located close to the antenna feed point with the extra cost and
effort that involves.

AB2TC - Knut



W2xj wrote
> You can get an AT-615B from Array Solutions now and do this. I put 10 in a
> club station for our various wire arrays. They do everything you need.
> 
> BTW I disagree about this 50 Ohm antenna thing. In my world of commercial
> high powered broadcasting 30 MHz and under, there are almost never
> resonant, matched 50 ohm arrays.  
> 
> Sent from my iPad
> 
>> On Apr 19, 2020, at 8:41 AM, Richard Thorne 

> rthorne@

>  wrote:
>> 
> 





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[Elecraft] KAT500 & KPA500

[Terry E]

I am looking for good cond used KAT500 and KPA500



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Re: [Elecraft] About my capacitor failure (etc.) issue:

[Adrian]

When you say 'blow' are you saying it short circuits internally or open 
circuits internally due to the event  ?



Adrian Fewster

On 20/4/20 8:07 am, Christopher Hoover wrote:

You might want to replace the bridge rectifier in that new 35A power supply.

Yep, right out of the box.

At some point, Astron started shipping RS-35A's with a 25A bridge
rectifier.   They paralleled two out of four of the 25A diodes twice over
to make, supposedly, a pair of 50A diodes for center-tapped full-wave
rectification.  That's not good engineering practice as the diodes in each
pair will not share current equally because of differences in Vf and
tempco. Once one blow, the other will blow shortly after.

After I fixed my own RS-35A with this problem, I've helped several other
hams fix this same problem in theirs.  Not a random sample, as this is just
folks on my local machine and in local clubs.

You can get a 50A bridge in the same package for under $3.

Perhaps Astron has fixed the problem since 

73 de AI6KG  -ch




On Thu, Apr 16, 2020 at 10:28 AM Ray Albers  wrote:


Many to all who posted/responded to my recent post about an electrolytic
capacitor failure in my power supply.  Lots of very interesting reading
about peoples' industry experiences - thank you!

Several have pointed out that using a 20A supply with my K3/100 is pushing
close to (or over!) the limit.  Even though I am measuring just 16A at the
power level I'm running (and not running anything but the K3 on this
supply) I agree that I'm skirting the edges. So even though I've been
getting away with it for a long time, this morning I ordered a 35A supply.
I'll probably sleep better.

73
Ray K2HYD

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https://www.avast.com/sig-email?utm_medium=email_source=link_campaign=sig-email_content=webmail_term=icon
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Re: [Elecraft] KATxxx Remote Tuner

[Lyn Norstad]

Dave -

Not as much for improved performance as to get the very annoying relay clatter 
out of the shack, and back up into the attic where I don't have to listen to it.



73
Lyn, W0LEN



-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of David Gilbert
Sent: Sunday, April 19, 2020 1:17 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KATxxx Remote Tuner


Why?  Specifically (numbers please), what would it gain you that would 
be cost effective versus other alternatives?

73,
Dave   AB7E




On 4/19/2020 8:52 AM, Lyn Norstad wrote:
>
> That being said, a “remote” version of the KAT500 (or a KAT1500) would be of 
> immense interest to me – so I will follow this thread closely.
>
>   
>
> 73
>
> Lyn,
>
> W0LEN
>
>   

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Re: [Elecraft] About my capacitor failure (etc.) issue:

[Christopher Hoover]

You might want to replace the bridge rectifier in that new 35A power supply.

Yep, right out of the box.

At some point, Astron started shipping RS-35A's with a 25A bridge
rectifier.   They paralleled two out of four of the 25A diodes twice over
to make, supposedly, a pair of 50A diodes for center-tapped full-wave
rectification.  That's not good engineering practice as the diodes in each
pair will not share current equally because of differences in Vf and
tempco. Once one blow, the other will blow shortly after.

After I fixed my own RS-35A with this problem, I've helped several other
hams fix this same problem in theirs.  Not a random sample, as this is just
folks on my local machine and in local clubs.

You can get a 50A bridge in the same package for under $3.

Perhaps Astron has fixed the problem since 

73 de AI6KG  -ch




On Thu, Apr 16, 2020 at 10:28 AM Ray Albers  wrote:

> Many to all who posted/responded to my recent post about an electrolytic
> capacitor failure in my power supply.  Lots of very interesting reading
> about peoples' industry experiences - thank you!
>
> Several have pointed out that using a 20A supply with my K3/100 is pushing
> close to (or over!) the limit.  Even though I am measuring just 16A at the
> power level I'm running (and not running anything but the K3 on this
> supply) I agree that I'm skirting the edges. So even though I've been
> getting away with it for a long time, this morning I ordered a 35A supply.
> I'll probably sleep better.
>
> 73
> Ray K2HYD
>
> <
> https://www.avast.com/sig-email?utm_medium=email_source=link_campaign=sig-email_content=webmail_term=icon
> >
> Virus-free.
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Re: [Elecraft] KATxxx Remote Tuner

[W2xj]

you get what you pay for. 

Sent from my iPad

> On Apr 19, 2020, at 5:58 PM, Grant Youngman  wrote:
> 
> At a “mere” $3K each, the AT-615B might be a great product, but is hardly 
> what I would call a universally accessible solution … 
> 
> Grant NQ5T
> 
>> On Apr 19, 2020, at 5:13 PM, W2xj  wrote:
>> 
>> You can get an AT-615B from Array Solutions now and do this. I put 10 in a 
>> club station for our various wire arrays. They do everything you need.
>> 
>> BTW I disagree about this 50 Ohm antenna thing. In my world of commercial 
>> high powered broadcasting 30 MHz and under, there are almost never resonant, 
>> matched 50 ohm arrays.  
>> 
>> Sent from my iPad
>> 
 On Apr 19, 2020, at 8:41 AM, Richard Thorne  wrote:
>>> 
>>> 
>>> Eric/Wayne,
>>> 
>>> Has there been any work done for a potential dedicated remote antenna tuner?
>>> 
>>> A remote tuner that could handle 500 or 1500 watts to match up with amps 
>>> power wise (Or just a barefoot K3/K4). Maybe a black box between the LAN on 
>>> the K4 or ACC on the K3 so control signals could be sent to the tuner via 
>>> the coax.
>>> 
>>> I’m a firm believer in 50 ohm matched antennas, but if a tuner is required 
>>> it needs to be at the feed point.
>>> 
>>> Rich - N5ZC
>>> Sent from my iPad
>>> __
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> 
> 

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Re: [Elecraft] Some K4 updates from the engineering department

[Paul Van Dyke]

I will be the one that will ask ... I ASSUME it will also be accessed with
an Android tablet?

Paul Van Dyke .. KB9AVO
   also on the early list

On Sun, Apr 19, 2020 at 5:47 PM Bob McGraw K4TAX 
wrote:

> Yep, got that experience last year at the Huntsville Hamfest.  The K4 was
> being controlled wirelessly from an iPad.  Darn slick too.
>
> Bob, K4TAX
>
>
> Sent from my iPhone
>
> > On Apr 19, 2020, at 4:43 PM, David Gilbert 
> wrote:
> >
> > 
> > That was already demonstrated by Elecraft in what I believe was their
> first video of the K4 in action at one of the trade shows. I'm sure you can
> still find it on YouTube somewhere.
> >
> > Dave   AB7E
> >
> >
> >
> >> On 4/19/2020 1:10 PM, hawley, charles j jr wrote:
> >> When I read about the touch controls, I suddenly had an image in my
> mind of a small touch tablet on the desk that had all the controls on it
> that were on the K4 display.
> >> Kind of a touch panel Kpod...
> >>
> >> Jack BMW Motorcycles
> >> Chuck KE9UW
> >> c-haw...@illinois.edu
> >
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Re: [Elecraft] KATxxx Remote Tuner

[Grant Youngman]

At a “mere” $3K each, the AT-615B might be a great product, but is hardly what 
I would call a universally accessible solution … 

Grant NQ5T

> On Apr 19, 2020, at 5:13 PM, W2xj  wrote:
> 
> You can get an AT-615B from Array Solutions now and do this. I put 10 in a 
> club station for our various wire arrays. They do everything you need.
> 
> BTW I disagree about this 50 Ohm antenna thing. In my world of commercial 
> high powered broadcasting 30 MHz and under, there are almost never resonant, 
> matched 50 ohm arrays.  
> 
> Sent from my iPad
> 
>> On Apr 19, 2020, at 8:41 AM, Richard Thorne  wrote:
>> 
>> 
>> Eric/Wayne,
>> 
>> Has there been any work done for a potential dedicated remote antenna tuner?
>> 
>> A remote tuner that could handle 500 or 1500 watts to match up with amps 
>> power wise (Or just a barefoot K3/K4). Maybe a black box between the LAN on 
>> the K4 or ACC on the K3 so control signals could be sent to the tuner via 
>> the coax.
>> 
>> I’m a firm believer in 50 ohm matched antennas, but if a tuner is required 
>> it needs to be at the feed point.
>> 
>> Rich - N5ZC
>> Sent from my iPad
>> __
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[Elecraft] Remote tuner

[Ken Roberson via Elecraft]

Hello all,
I use a remote for a 630M 60 ft vertical - more info on my web-site.
K5DNL dot com
73 Thanks Ken K5DNL

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Re: [Elecraft] Some K4 updates from the engineering department

[Bob McGraw K4TAX]

Yep, got that experience last year at the Huntsville Hamfest.  The K4 was being 
controlled wirelessly from an iPad.  Darn slick too.  

Bob, K4TAX


Sent from my iPhone

> On Apr 19, 2020, at 4:43 PM, David Gilbert  wrote:
> 
> 
> That was already demonstrated by Elecraft in what I believe was their first 
> video of the K4 in action at one of the trade shows. I'm sure you can still 
> find it on YouTube somewhere.
> 
> Dave   AB7E
> 
> 
> 
>> On 4/19/2020 1:10 PM, hawley, charles j jr wrote:
>> When I read about the touch controls, I suddenly had an image in my mind of 
>> a small touch tablet on the desk that had all the controls on it that were 
>> on the K4 display.
>> Kind of a touch panel Kpod...
>> 
>> Jack BMW Motorcycles
>> Chuck KE9UW
>> c-haw...@illinois.edu
> 
> __
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Re: [Elecraft] Some K4 updates from the engineering department

[David Gilbert]

That was already demonstrated by Elecraft in what I believe was their 
first video of the K4 in action at one of the trade shows. I'm sure you 
can still find it on YouTube somewhere.


Dave   AB7E



On 4/19/2020 1:10 PM, hawley, charles j jr wrote:

When I read about the touch controls, I suddenly had an image in my mind of a 
small touch tablet on the desk that had all the controls on it that were on the 
K4 display.
Kind of a touch panel Kpod...

Jack BMW Motorcycles
Chuck KE9UW
c-haw...@illinois.edu


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Re: [Elecraft] KATxxx Remote Tuner

[Bob McGraw K4TAX]

I agree. Match the antenna, whatever the Z may be, to the feed line.   This is 
most efficiently done at the antenna feed-point.   

However with good loss coax on HF, matching at the transmitter end is easier 
and less complex and less expensive.  

Bob, K4TAX


Sent from my iPhone

> On Apr 19, 2020, at 4:13 PM, W2xj  wrote:
> 
> You can get an AT-615B from Array Solutions now and do this. I put 10 in a 
> club station for our various wire arrays. They do everything you need.
> 
> BTW I disagree about this 50 Ohm antenna thing. In my world of commercial 
> high powered broadcasting 30 MHz and under, there are almost never resonant, 
> matched 50 ohm arrays.  
> 
> Sent from my iPad
> 
>> On Apr 19, 2020, at 8:41 AM, Richard Thorne  wrote:
>> 
>> 
>> Eric/Wayne,
>> 
>> Has there been any work done for a potential dedicated remote antenna tuner?
>> 
>> A remote tuner that could handle 500 or 1500 watts to match up with amps 
>> power wise (Or just a barefoot K3/K4). Maybe a black box between the LAN on 
>> the K4 or ACC on the K3 so control signals could be sent to the tuner via 
>> the coax.
>> 
>> I’m a firm believer in 50 ohm matched antennas, but if a tuner is required 
>> it needs to be at the feed point.
>> 
>> Rich - N5ZC
>> Sent from my iPad
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Re: [Elecraft] KATxxx Remote Tuner

[W2xj]

You can get an AT-615B from Array Solutions now and do this. I put 10 in a club 
station for our various wire arrays. They do everything you need.

BTW I disagree about this 50 Ohm antenna thing. In my world of commercial high 
powered broadcasting 30 MHz and under, there are almost never resonant, matched 
50 ohm arrays.  

Sent from my iPad

> On Apr 19, 2020, at 8:41 AM, Richard Thorne  wrote:
> 
> 
> Eric/Wayne,
> 
> Has there been any work done for a potential dedicated remote antenna tuner?
> 
> A remote tuner that could handle 500 or 1500 watts to match up with amps 
> power wise (Or just a barefoot K3/K4). Maybe a black box between the LAN on 
> the K4 or ACC on the K3 so control signals could be sent to the tuner via the 
> coax.
> 
> I’m a firm believer in 50 ohm matched antennas, but if a tuner is required it 
> needs to be at the feed point.
> 
> Rich - N5ZC
> Sent from my iPad
> __
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Re: [Elecraft] Some K4 updates from the engineering department

[Wayne Burdick]

We already have this capability, too

Wayne
N6KR


> On Apr 19, 2020, at 1:10 PM, hawley, charles j jr  
> wrote:
> 
> When I read about the touch controls, I suddenly had an image in my mind of a 
> small touch tablet on the desk that had all the controls on it that were on 
> the K4 display.
> Kind of a touch panel Kpod...
> 
> Jack BMW Motorcycles
> Chuck KE9UW
> c-haw...@illinois.edu
> 
> Sent from my iPad



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Re: [Elecraft] Some K4 updates from the engineering department

[Rick NK7I]

Simpler yet, use an appropriate size  (for your desk) tablet to manage the K4.  
Then take that with you when you’re in another room, traveling, etc. 

Rick NK7I

Smell Czech corruptions are inevitable

> On Apr 19, 2020, at 1:11 PM, hawley, charles j jr  
> wrote:
> 
> When I read about the touch controls, I suddenly had an image in my mind of 
> a small touch tablet on the desk that had all the controls on it that were on 
> the K4 display.
> Kind of a touch panel Kpod...
> 
> Jack BMW Motorcycles
> Chuck KE9UW
> c-haw...@illinois.edu
> 
> Sent from my iPad
> 
>> On Apr 19, 2020, at 2:46 PM, Wayne Burdick  wrote:
>> 
>> Greetings from locked-down California I hope everyone, near and far, is 
>> staying safe!
>> 
>> I thought I'd take a break from playing with the K4 and tweaking firmware to 
>> give everyone a status report from the engineering side. (Eric has been 
>> keeping everyone informed about how Elecraft has been affected by the 
>> pandemic more generally.)
>> 
>> These musings are in no particular order. I hope they help satisfy those who 
>> recently posted with questions, info-cravings, etc.
>> 
>> * * *
>> 
>> Reference Oscillator
>> 
>> The K4 includes a stable internal TXCO, standard, as well as the ability to 
>> lock to an external 10 MHz reference. We just completed a round of testing 
>> on this feature. 
>> 
>> The internal TCXO is accurate to within +/- .28 ppm with no calibration and 
>> no external reference connected. There's a menu entry for dialing this in as 
>> tight as +/- .02 PPM (+/- 1 Hz at 50 MHz). Connecting an external reference 
>> will hold it even closer, and of course keep it there over an even wider 
>> temperature range.
>> 
>> Panadapter Controls
>> 
>> Thanks to the efforts of our [working-at-home] software team, the panadapter 
>> controls just keep getting better. When you tap DISPLAY, you're presented 
>> with 14 easy to use display functions. But we took things a step further by 
>> allowing you to specify whether to adjust the current parameter on LCD, EXT, 
>> or both (when an external monitor is attached), and on main, sub, or both 
>> (when in dual-display mode). You can independently specify single or 
>> dual-pan for LCD and external monitor. For example, you could have dual-Pan 
>> on a large HDMI monitor, while setting the LCD to monitor just main or sub 
>> RX.
>> 
>> Stereo Audio
>> 
>> Receive audio provides independent left and right channels for both 
>> headphones and external speakers. When used in single-receive mode, this 
>> allows you to use simulated stereo or "pitch mapping"-- both very effective 
>> at relieving listening fatigue. I've been using this a lot in DXing and QRP 
>> work. Full stereo also comes into play in diversity mode, when listening to 
>> pileups, or just monitoring two separate bands. Even with a basic K4, the 
>> two receivers can be set to any two bands, and you can operate cross-band 
>> split. The K4D adds a second set of band-pass filters and a second A-to-D 
>> converter to greatly improve out-of-band rejection when monitoring different 
>> bands.
>> 
>> Receive Antenna Controls
>> 
>> We recently made some improvements in this area. In addition to main RX ant 
>> and sub RX ant selection switches, there are now separate icons showing 
>> which antennas are in use: one for main RX, one for sub RX, and one for TX 
>> antenna. Main and sub receivers default to the TX antenna, but you can 
>> select any of the antenna jacks for assignment to each receiver 
>> independently. This updates the icons accordingly. You can also assign names 
>> to antenna ports using a pop-up alphanumeric keyboard. On my K4, I have 
>> names for the three antennas connected to my KAT4 ATU, as well as "SIG GEN" 
>> for the RX ANT IN 1 jack and "LOOP" for RX ANT IN 2. 
>> 
>> RF Gain Controls
>> 
>> The ATTN switch brings up a selection tool that allows you to turn the 
>> attenuator on/off and select attenuation from 0 to 21 dB in 3-dB steps. (As 
>> with all receive and transmit controls, these settings are stored per-band 
>> and per-receiver.) You can also dial in per-receiver RF GAIN (0 to -60 dB, 
>> with digital readout) and preamp setting (off/pre1/pre2). All gain settings 
>> are now taken into account when calculating S-meter and panadapter reference 
>> levels.
>> 
>> Miscellaneous Controls
>> 
>> Compared the the K3S, the K4 has numerous additional controls, resulting in 
>> a lot less use of the menu. Each receiver has a collection of per-mode 
>> settings (tap MAIN RX or SUB RX, respectively), as does the transmitter (tap 
>> the TX button). There are dedicated switches for TUNE LP (user-specified 
>> low-power TUNE setting), REM ANT (for future control of remote antenna 
>> switches, rotators, etc.), VFO B>A (in addition to the usual A>B), AUTO spot 
>> (in addition to SPOT), PF1-PF4 (plus another 14 user functions, Fn 1-14, via 
>> a touch function), and a separate audio BALance knob function, the behavior 
>> of 

Re: [Elecraft] Some K4 updates from the engineering department

[hawley, charles j jr]

When I read about the touch controls, I suddenly had an image in my mind of a 
small touch tablet on the desk that had all the controls on it that were on the 
K4 display.
Kind of a touch panel Kpod...

Jack BMW Motorcycles
Chuck KE9UW
c-haw...@illinois.edu

Sent from my iPad

> On Apr 19, 2020, at 2:46 PM, Wayne Burdick  wrote:
> 
> Greetings from locked-down California I hope everyone, near and far, is 
> staying safe!
> 
> I thought I'd take a break from playing with the K4 and tweaking firmware to 
> give everyone a status report from the engineering side. (Eric has been 
> keeping everyone informed about how Elecraft has been affected by the 
> pandemic more generally.)
> 
> These musings are in no particular order. I hope they help satisfy those who 
> recently posted with questions, info-cravings, etc.
> 
> * * *
> 
> Reference Oscillator
> 
> The K4 includes a stable internal TXCO, standard, as well as the ability to 
> lock to an external 10 MHz reference. We just completed a round of testing on 
> this feature. 
> 
> The internal TCXO is accurate to within +/- .28 ppm with no calibration and 
> no external reference connected. There's a menu entry for dialing this in as 
> tight as +/- .02 PPM (+/- 1 Hz at 50 MHz). Connecting an external reference 
> will hold it even closer, and of course keep it there over an even wider 
> temperature range.
> 
> Panadapter Controls
> 
> Thanks to the efforts of our [working-at-home] software team, the panadapter 
> controls just keep getting better. When you tap DISPLAY, you're presented 
> with 14 easy to use display functions. But we took things a step further by 
> allowing you to specify whether to adjust the current parameter on LCD, EXT, 
> or both (when an external monitor is attached), and on main, sub, or both 
> (when in dual-display mode). You can independently specify single or dual-pan 
> for LCD and external monitor. For example, you could have dual-Pan on a large 
> HDMI monitor, while setting the LCD to monitor just main or sub RX.
> 
> Stereo Audio
> 
> Receive audio provides independent left and right channels for both 
> headphones and external speakers. When used in single-receive mode, this 
> allows you to use simulated stereo or "pitch mapping"-- both very effective 
> at relieving listening fatigue. I've been using this a lot in DXing and QRP 
> work. Full stereo also comes into play in diversity mode, when listening to 
> pileups, or just monitoring two separate bands. Even with a basic K4, the two 
> receivers can be set to any two bands, and you can operate cross-band split. 
> The K4D adds a second set of band-pass filters and a second A-to-D converter 
> to greatly improve out-of-band rejection when monitoring different bands.
> 
> Receive Antenna Controls
> 
> We recently made some improvements in this area. In addition to main RX ant 
> and sub RX ant selection switches, there are now separate icons showing which 
> antennas are in use: one for main RX, one for sub RX, and one for TX antenna. 
> Main and sub receivers default to the TX antenna, but you can select any of 
> the antenna jacks for assignment to each receiver independently. This updates 
> the icons accordingly. You can also assign names to antenna ports using a 
> pop-up alphanumeric keyboard. On my K4, I have names for the three antennas 
> connected to my KAT4 ATU, as well as "SIG GEN" for the RX ANT IN 1 jack and 
> "LOOP" for RX ANT IN 2. 
> 
> RF Gain Controls
> 
> The ATTN switch brings up a selection tool that allows you to turn the 
> attenuator on/off and select attenuation from 0 to 21 dB in 3-dB steps. (As 
> with all receive and transmit controls, these settings are stored per-band 
> and per-receiver.) You can also dial in per-receiver RF GAIN (0 to -60 dB, 
> with digital readout) and preamp setting (off/pre1/pre2). All gain settings 
> are now taken into account when calculating S-meter and panadapter reference 
> levels.
> 
> Miscellaneous Controls
> 
> Compared the the K3S, the K4 has numerous additional controls, resulting in a 
> lot less use of the menu. Each receiver has a collection of per-mode settings 
> (tap MAIN RX or SUB RX, respectively), as does the transmitter (tap the TX 
> button). There are dedicated switches for TUNE LP (user-specified low-power 
> TUNE setting), REM ANT (for future control of remote antenna switches, 
> rotators, etc.), VFO B>A (in addition to the usual A>B), AUTO spot (in 
> addition to SPOT), PF1-PF4 (plus another 14 user functions, Fn 1-14, via a 
> touch function), and a separate audio BALance knob function, the behavior of 
> which could be adapted to various operator needs in the future.
> 
> Touch Controls
> 
> We're sure you'll find, as we have, that the K4's touch screen interface is 
> fast and convenient to use. To capitalize on this, we've been adding new 
> touch features. To highlight a few: Tapping the RIT/XIT offset window turns 
> RIT on/off (per receiver). Tapping the antenna icons brings up 

Re: [Elecraft] Some K4 updates from the engineering department

[Richard Zalewski]

Thank you very much.  More updates like this will make your bankers (those
that pre-ordered) feel a lot better.  Please keep it up and Stay Safe!

Richard
*W7ZR* ex:5C5Z, CN2ZR, K2JSP, W6SBZ, W7KXR, K9ZIJ, W9KNF, W0KDF, W0MQU,
J68ZR, KC6ZR, PJ4/W7ZR, KH2,W7ZR, KH6/W7ZR, V31ZR, VK4AAZ, XE2DV


*Be joyful in hope, patient in affliction, faithful in prayer*


On Sun, Apr 19, 2020 at 12:47 PM Wayne Burdick  wrote:

> Greetings from locked-down California I hope everyone, near and far,
> is staying safe!
>
> I thought I'd take a break from playing with the K4 and tweaking firmware
> to give everyone a status report from the engineering side. (Eric has been
> keeping everyone informed about how Elecraft has been affected by the
> pandemic more generally.)
>
> These musings are in no particular order. I hope they help satisfy those
> who recently posted with questions, info-cravings, etc.
>
> * * *
>
> Reference Oscillator
>
> The K4 includes a stable internal TXCO, standard, as well as the ability
> to lock to an external 10 MHz reference. We just completed a round of
> testing on this feature.
>
> The internal TCXO is accurate to within +/- .28 ppm with no calibration
> and no external reference connected. There's a menu entry for dialing this
> in as tight as +/- .02 PPM (+/- 1 Hz at 50 MHz). Connecting an external
> reference will hold it even closer, and of course keep it there over an
> even wider temperature range.
>
> Panadapter Controls
>
> Thanks to the efforts of our [working-at-home] software team, the
> panadapter controls just keep getting better. When you tap DISPLAY, you're
> presented with 14 easy to use display functions. But we took things a step
> further by allowing you to specify whether to adjust the current parameter
> on LCD, EXT, or both (when an external monitor is attached), and on main,
> sub, or both (when in dual-display mode). You can independently specify
> single or dual-pan for LCD and external monitor. For example, you could
> have dual-Pan on a large HDMI monitor, while setting the LCD to monitor
> just main or sub RX.
>
> Stereo Audio
>
> Receive audio provides independent left and right channels for both
> headphones and external speakers. When used in single-receive mode, this
> allows you to use simulated stereo or "pitch mapping"-- both very effective
> at relieving listening fatigue. I've been using this a lot in DXing and QRP
> work. Full stereo also comes into play in diversity mode, when listening to
> pileups, or just monitoring two separate bands. Even with a basic K4, the
> two receivers can be set to any two bands, and you can operate cross-band
> split. The K4D adds a second set of band-pass filters and a second A-to-D
> converter to greatly improve out-of-band rejection when monitoring
> different bands.
>
> Receive Antenna Controls
>
> We recently made some improvements in this area. In addition to main RX
> ant and sub RX ant selection switches, there are now separate icons showing
> which antennas are in use: one for main RX, one for sub RX, and one for TX
> antenna. Main and sub receivers default to the TX antenna, but you can
> select any of the antenna jacks for assignment to each receiver
> independently. This updates the icons accordingly. You can also assign
> names to antenna ports using a pop-up alphanumeric keyboard. On my K4, I
> have names for the three antennas connected to my KAT4 ATU, as well as "SIG
> GEN" for the RX ANT IN 1 jack and "LOOP" for RX ANT IN 2.
>
> RF Gain Controls
>
> The ATTN switch brings up a selection tool that allows you to turn the
> attenuator on/off and select attenuation from 0 to 21 dB in 3-dB steps. (As
> with all receive and transmit controls, these settings are stored per-band
> and per-receiver.) You can also dial in per-receiver RF GAIN (0 to -60 dB,
> with digital readout) and preamp setting (off/pre1/pre2). All gain settings
> are now taken into account when calculating S-meter and panadapter
> reference levels.
>
> Miscellaneous Controls
>
> Compared the the K3S, the K4 has numerous additional controls, resulting
> in a lot less use of the menu. Each receiver has a collection of per-mode
> settings (tap MAIN RX or SUB RX, respectively), as does the transmitter
> (tap the TX button). There are dedicated switches for TUNE LP
> (user-specified low-power TUNE setting), REM ANT (for future control of
> remote antenna switches, rotators, etc.), VFO B>A (in addition to the usual
> A>B), AUTO spot (in addition to SPOT), PF1-PF4 (plus another 14 user
> functions, Fn 1-14, via a touch function), and a separate audio BALance
> knob function, the behavior of which could be adapted to various operator
> needs in the future.
>
> Touch Controls
>
> We're sure you'll find, as we have, that the K4's touch screen interface
> is fast and convenient to use. To capitalize on this, we've been adding new
> touch features. To highlight a few: Tapping the RIT/XIT offset window turns
> RIT on/off (per receiver). Tapping the antenna 

Re: [Elecraft] K-4 capabilities

[Wayne Burdick]

This is definitely planned.

Wayne


> On Apr 19, 2020, at 11:41 AM, Barry LaZar  wrote:
> 
> And, how will I be able to interface CW Skimmer for contesting? Will there
> be a I output available in MME format as there will be no IF.
> 
> 73,
> Barry
> K3NDM
> 
> On Sun, Apr 19, 2020, 12:37 PM Art Suberbielle  wrote:
> 
>> As we all await the arrival of the K-4, I'm wondering if the radio will
>> "remember" all of the settings per band. Specifically, I use different RF
>> settings per band and have to remember to reset the RF as I go from 160 to
>> 20, for example. Will these settings and AF gain, etc be recalled per band?
>> 
>> Wayne, et al, tell us more about what you've been doing on the software
>> design side of the K-4 while "on vacation" at home?
>> 
>> 73,
>> Art KZ5D
>> __
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>> 
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[Elecraft] Some K4 updates from the engineering department

[Wayne Burdick]

Greetings from locked-down California I hope everyone, near and far, is 
staying safe!

I thought I'd take a break from playing with the K4 and tweaking firmware to 
give everyone a status report from the engineering side. (Eric has been keeping 
everyone informed about how Elecraft has been affected by the pandemic more 
generally.)

These musings are in no particular order. I hope they help satisfy those who 
recently posted with questions, info-cravings, etc.

* * *

Reference Oscillator

The K4 includes a stable internal TXCO, standard, as well as the ability to 
lock to an external 10 MHz reference. We just completed a round of testing on 
this feature. 

The internal TCXO is accurate to within +/- .28 ppm with no calibration and no 
external reference connected. There's a menu entry for dialing this in as tight 
as +/- .02 PPM (+/- 1 Hz at 50 MHz). Connecting an external reference will hold 
it even closer, and of course keep it there over an even wider temperature 
range.

Panadapter Controls

Thanks to the efforts of our [working-at-home] software team, the panadapter 
controls just keep getting better. When you tap DISPLAY, you're presented with 
14 easy to use display functions. But we took things a step further by allowing 
you to specify whether to adjust the current parameter on LCD, EXT, or both 
(when an external monitor is attached), and on main, sub, or both (when in 
dual-display mode). You can independently specify single or dual-pan for LCD 
and external monitor. For example, you could have dual-Pan on a large HDMI 
monitor, while setting the LCD to monitor just main or sub RX.

Stereo Audio

Receive audio provides independent left and right channels for both headphones 
and external speakers. When used in single-receive mode, this allows you to use 
simulated stereo or "pitch mapping"-- both very effective at relieving 
listening fatigue. I've been using this a lot in DXing and QRP work. Full 
stereo also comes into play in diversity mode, when listening to pileups, or 
just monitoring two separate bands. Even with a basic K4, the two receivers can 
be set to any two bands, and you can operate cross-band split. The K4D adds a 
second set of band-pass filters and a second A-to-D converter to greatly 
improve out-of-band rejection when monitoring different bands.

Receive Antenna Controls

We recently made some improvements in this area. In addition to main RX ant and 
sub RX ant selection switches, there are now separate icons showing which 
antennas are in use: one for main RX, one for sub RX, and one for TX antenna. 
Main and sub receivers default to the TX antenna, but you can select any of the 
antenna jacks for assignment to each receiver independently. This updates the 
icons accordingly. You can also assign names to antenna ports using a pop-up 
alphanumeric keyboard. On my K4, I have names for the three antennas connected 
to my KAT4 ATU, as well as "SIG GEN" for the RX ANT IN 1 jack and "LOOP" for RX 
ANT IN 2. 

RF Gain Controls

The ATTN switch brings up a selection tool that allows you to turn the 
attenuator on/off and select attenuation from 0 to 21 dB in 3-dB steps. (As 
with all receive and transmit controls, these settings are stored per-band and 
per-receiver.) You can also dial in per-receiver RF GAIN (0 to -60 dB, with 
digital readout) and preamp setting (off/pre1/pre2). All gain settings are now 
taken into account when calculating S-meter and panadapter reference levels.

Miscellaneous Controls

Compared the the K3S, the K4 has numerous additional controls, resulting in a 
lot less use of the menu. Each receiver has a collection of per-mode settings 
(tap MAIN RX or SUB RX, respectively), as does the transmitter (tap the TX 
button). There are dedicated switches for TUNE LP (user-specified low-power 
TUNE setting), REM ANT (for future control of remote antenna switches, 
rotators, etc.), VFO B>A (in addition to the usual A>B), AUTO spot (in addition 
to SPOT), PF1-PF4 (plus another 14 user functions, Fn 1-14, via a touch 
function), and a separate audio BALance knob function, the behavior of which 
could be adapted to various operator needs in the future.

Touch Controls

We're sure you'll find, as we have, that the K4's touch screen interface is 
fast and convenient to use. To capitalize on this, we've been adding new touch 
features. To highlight a few: Tapping the RIT/XIT offset window turns RIT 
on/off (per receiver). Tapping the antenna icons brings up their selection 
widgets, with planned custom behavior for quick A/B testing. The Status Area of 
the LCD normally shows time and date, but you can tap it to select from various 
alternatives, including system parameters (like supply voltage/current) or 
per-receiver absolute signal levels in dBm. Tapping the per-RX filter graphics 
switches between per-mode FL1/2/3 settings.

* * *

I have to admit that it's frustrating to be sequestered at home, making only 
the occasional quick trip to the office or to 

[Elecraft] K4

[RALPH TURK]

Wayne et all
My only concern before I order a K4 is how it will work with two high power
AM transmitters near me.
10KW day,1kw night  KVOI south of me and a 50kw day only KUAT AM north of me. 
At some time, I will need to borrow or rent a k4 for a week and see how it 
behaves
The majority of my operation is between 2-3.5 Mhz, 4 to 7mhz,  7.3-10mhz, 11mhz 
to14mhz.
I also use my radio on most ham bands.  I currently use a K3 with all bells and 
1000MP
The MP seems to handle the intermod better then the k3
The intermod is not caused within the radios but cause by rusty chainlink 
fence, poor power line 
grounds etc.  My antennas are not the problem.  I tried a sharp cutoff filter 
for everything below 
3.5mhz.  No positive measurable results.

Ralph, W7HSG, AFA9RT
520-444-6610
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Re: [Elecraft] K4 capabilities

[David Bunte]

Ralph -

I love that story. When I was in high school I saw a full page photo of the
Hallicrafters SX-101A in CQ Magazine. I cut out that photo and had it taped
to my desk while I finished saving for that beast of a receiver.

Dave - K9FN

On Sun, Apr 19, 2020 at 2:46 PM Ralph Parker  wrote:

>  >In the meantime I guess we will have to wait and stare at pictures of
> the K4 Front panel.
>
> While anxiously waiting in line for the KPA500 to be released, I printed
> out a picture of the front panel
> of the '500, cut it out and placed it on the shelf where the '500 would
> go. Then I could pretend that
> the station was complete.
> Almost as good as the real thing!
>
> VE7XF
>
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Re: [Elecraft] K4 capabilities

[Ralph Parker]

>In the meantime I guess we will have to wait and stare at pictures of 
the K4 Front panel.


While anxiously waiting in line for the KPA500 to be released, I printed out a 
picture of the front panel
of the '500, cut it out and placed it on the shelf where the '500 would go. 
Then I could pretend that
the station was complete.
Almost as good as the real thing!

VE7XF

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Re: [Elecraft] K-4 capabilities

[Barry LaZar]

And, how will I be able to interface CW Skimmer for contesting? Will there
be a I output available in MME format as there will be no IF.

73,
Barry
K3NDM

On Sun, Apr 19, 2020, 12:37 PM Art Suberbielle  wrote:

> As we all await the arrival of the K-4, I'm wondering if the radio will
> "remember" all of the settings per band. Specifically, I use different RF
> settings per band and have to remember to reset the RF as I go from 160 to
> 20, for example. Will these settings and AF gain, etc be recalled per band?
>
> Wayne, et al, tell us more about what you've been doing on the software
> design side of the K-4 while "on vacation" at home?
>
> 73,
> Art KZ5D
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Re: [Elecraft] K-4 capabilities

[Doug Turnbull]

Hello Mike and friends,
  Well you are not in the EU and do not need to wait for CE approval.
The start of this process can only begin as I understand with a production
model.Until CE approval is obtained Elecraft can not shirt to the EU.
I am not complaining about EI being in the EU but am anxious.I suppose
one could bring one back from the USA on a plane and declare it in the
airport but there are no flights out of EI to USA for such purposes these
days.My radio is also paid for and ultimately it will be the K4HD.
One can add the "superhet ?" front end later when it becomes available.

73 Doug EI2CN

PS this is what happens to one who is cocooned.   Over 70s in EI are not
even supposed to leave their property to go grocery shopping
;  this is something neighbours are expected to do.   

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Mike VE3YF
Sent: Sunday 19 April 2020 17:57
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K-4 capabilities

Yes getting some more info would be great. I have been bugging the boys at
Elecraft for an electronic copy of the manual, but nothing yet. I have all
the cabling done and a spot cleared on the desk beside my
KPA1500 for either my K4D or K4HD, I too have paid the full amount and just
waiting for the early May date when California will ultimately decide if
people can go back to work or will have to stay isolated further. I think
from reading everything hinges on that time frame.

In the meantime I guess we will have to wait and stare at pictures of the K4
Front panel.

-- 

*73 De Mike*
*VE3YF

_/http://www.ve3yf.com/_*

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Re: [Elecraft] KATxxx Remote Tuner

[David Gilbert]

Why?  Specifically (numbers please), what would it gain you that would 
be cost effective versus other alternatives?


73,
Dave   AB7E




On 4/19/2020 8:52 AM, Lyn Norstad wrote:


That being said, a “remote” version of the KAT500 (or a KAT1500) would be of 
immense interest to me – so I will follow this thread closely.

  


73

Lyn,

W0LEN

  


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Re: [Elecraft] KATxxx Remote Tuner

[David Gilbert]

I don't think that's actually true in most cases.  For example, a load 
of 35 - j45 gives a 3:1 SWR at the load for 50 ohm coax, and the 
additional line loss at 14 MHz due to SWR over 200 feet of LMR-400 
(moderate cost) is about 0.5 dB.


In most cases with typical antennas and decent feedline, a tuner is more 
about making your rig or amplifier happy, and for that it can be in the 
shack.


Unless of course you're talking about some random piece of wire with a 
10:1 SWR, but even then the extra loss due to SWR for the 200 feet of 
LMR-400 is less than 2.5 dB at 14 MHz.  The best reason I can think of 
for a tuner in that case is to keep the RF voltage from being excessive 
at high power.  If you're obsessive about 50 ohm matched antennas I 
doubt that is the case for you, and if it was me I'd put the $1,000+ 
dollars it would probably cost for a stand alone high power remote tuner 
capable of handling a 10:1 SWR to better use on the antennas themselves.


73,
Dave   AB7E



On 4/19/2020 5:40 AM, Richard Thorne wrote:

I’m a firm believer in 50 ohm matched antennas, but if a tuner is required it 
needs to be at the feed point.

Rich - N5ZC


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Re: [Elecraft] K-4 capabilities

[Mike VE3YF]

Yes getting some more info would be great. I have been bugging the boys 
at Elecraft for an electronic copy of the manual, but nothing yet. I 
have all the cabling done and a spot cleared on the desk beside my 
KPA1500 for either my K4D or K4HD, I too have paid the full amount and 
just waiting for the early May date when California will ultimately 
decide if people can go back to work or will have to stay isolated 
further. I think from reading everything hinges on that time frame.


In the meantime I guess we will have to wait and stare at pictures of 
the K4 Front panel.


--

*73 De Mike*
*VE3YF

_/http://www.ve3yf.com/_*

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Re: [Elecraft] KATxxx Remote Tuner

[Jim Brown]

On 4/19/2020 8:51 AM, ab2tc wrote:

I totally agree with your last statement about the tuner placement.


The importance of a tuner being at the feedpoint depends entirely on the 
antenna, the frequency(ies), and the feedline. The lower the operating 
frequency, and lower the feedline loss characteristics, and the lower 
the mismatch, a tuner in the shack can work quite well at moderate power 
levels. AD5X, who does product reviews for ARRL, reviewed the "43 ft 
vertical," which is notoriously difficult to match. One solution he 
found was a 4:1 unun at the feedpoint and 1/2-in hardline to the shack. 
For high power on 160 and 80M, he used a tuner at the feedpoint.


Some years ago, I successfully loaded a vertical on 80M that was 
resonant on 160M, hence a VERY high impedance at the feedpoint. The 
feedline was RG8 and only about 40 ft long, so I was able to load it 
quite successfully with a Ten Tec 238 tuner in the shack and a legal 
limit Ten Tec tube amp.


On 60M, I'm currently loading a high 80M dipole fed with 160 ft of RG11 
using the tuner in the KPA1500. The amp, of course, is throttled back to 
less than 100W. I'm not the loudest signal on the band, but I've worked 
into EU and SA in a few evenings on the band.


73, Jim K9YC
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Re: [Elecraft] K-4 capabilities

[Ken B via Elecraft]

Anxiously awaiting it.   There was promises of more and frequent conversation 
unless I am mistaken.   I paid for it in full and am not going to cancel it but 
would like more information
Thank youWB8PKK

Sent from Yahoo Mail on Android 
 
  On Sun, Apr 19, 2020 at 1:09 PM, Doug Turnbull wrote:   
Wayne,
    In these times of lockdown some of us are buoyed up with the prospect of
the new K4.    Well some of the fortunate who are waiting for early
delivery.    It is a bit like waiting for Santa as a kid.  When a toy
catalogue came in the door I devoured it; well maybe these catalogues are a
thing of the past.  Nonetheless, anything you can tell us about this radio
just gives us something to look forward to.    I see from the back of QST
that the Kenwood TS 890S has some pretty nice features and impressive
specifications.    It will be most interesting to see how the K4 stacks up.
Will Porsche surpass Jaguar again and claim pole position?    The K4 is a
big hope for the future.    Tell us what you can, we need bedtime stories to
fall asleep dreaming over.

                                  73 Doug EI2CN

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Art Suberbielle
Sent: Sunday 19 April 2020 16:36
To: Elecraft list 
Subject: [Elecraft] K-4 capabilities

As we all await the arrival of the K-4, I'm wondering if the radio will
"remember" all of the settings per band. Specifically, I use different RF
settings per band and have to remember to reset the RF as I go from 160 to
20, for example. Will these settings and AF gain, etc be recalled per band?

Wayne, et al, tell us more about what you've been doing on the software
design side of the K-4 while "on vacation" at home?

73,
Art KZ5D
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Re: [Elecraft] K3 Utility vs macOS Catalina

[David Ferrington, M0XDF]

Sorry, if someone mentioned this, but the original KUSB uses a Prolific chipset.
That’s always been temperamental. Plugable.com have drivers for 10.15.3 but you 
have to buy them and I haven’t tried them.

73 de David, M0XDF
The difference between genius and stupidity is that genius has its limits. -- 
Albert Einstein

> On 28 Mar 2020, at 16:08, John Woodard  wrote:
> 
> Hi Don,
>   I just upgraded to 10.15.4 and launched K3 Utility. It loaded fine, but
> I noticed that the options under the Configuration and Calibration tabs
> were grayed out. I switched to the Port tab and selected Test
> Communications. When I got the positive response back from the K3, the
> options under Configuration and Calibration were no longer grayed out.
> Everything seems to be working fine now.
> 
> 73 de John, WK8A
> 
> On Fri, Mar 27, 2020 at 7:05 PM Don Putnick  > wrote:
> 
>> Hi all,
>> I'm working with Rob at Elecraft on this, but I'm trying to gather more
>> data for us. When I open the K3 Utility under Catalina, nothing is
>> displayed. If I go down to the dock, right click on the utility, then
>> select "Show all windows", the utility main screen opens. BUT if I click on
>> the screen, it closes immediately. The KAT500 Utility works just fine, so I
>> don't think its the usb-to-serial cable or the driver. And the K3 Utility
>> works correctly under macOS Sierra. Anyone else experiencing this?
>> 73 Don NA6Z
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>> 
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[Elecraft] KX2 With W9RAN "Versatile T/R Switch" for SDR

[James Bennett via Elecraft]

Hi All - wondering if any of you KX2 (or even KX3) owners have built and are 
using the W9RAN "Versatile T/R Switch for SDRs and Vintage Radios” featured on 
page 30 of the December 2018 issue of QST? 

I enjoy the P3 that I use with my K3 and sure miss “seeing” the band when I use 
the little QRP rig here in the shack. I have an RSPplay RSPpro2 SDR connected 
to a Mac Mini and a 32” monitor and would like to share my antenna system 
between the SDR and the KX2. This would allow me to “look" at a particular band 
with the SDR and then tune the KX2 to a desired spot I found on the SDR.

I got the T/R Switch kit from W9RAN on Saturday and have not yet started 
building it. Based on the schematic in QST, it appears that as built, one 
cannot listen to the KX2 receiver; the antenna is connected to the SDR until 
the transmitter is keyed. I thought maybe I could jumper pins 14 and 11 at the 
T/R relay on the board, or use a coax Tee so that the KX2 would always be 
connected to the antenna.

Thoughts…?

Jim / W6JHB
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[Elecraft] KX-2 ATU not working

[Peter West]

I can hear the ATU in my KX-2 running when the ATU button is pushed but it is 
not changing the SWR. An Elecraft T1 works and lowers the SWR. Any thoughts or 
is this a mail-in repair solution?

73 - Peter - VE3HG
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Re: [Elecraft] K-4 capabilities

[Doug Turnbull]

Wayne,
In these times of lockdown some of us are buoyed up with the prospect of
the new K4. Well some of the fortunate who are waiting for early
delivery.It is a bit like waiting for Santa as a kid.   When a toy
catalogue came in the door I devoured it; well maybe these catalogues are a
thing of the past.   Nonetheless, anything you can tell us about this radio
just gives us something to look forward to.I see from the back of QST
that the Kenwood TS 890S has some pretty nice features and impressive
specifications.It will be most interesting to see how the K4 stacks up.
Will Porsche surpass Jaguar again and claim pole position? The K4 is a
big hope for the future.Tell us what you can, we need bedtime stories to
fall asleep dreaming over.

   73 Doug EI2CN

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Art Suberbielle
Sent: Sunday 19 April 2020 16:36
To: Elecraft list 
Subject: [Elecraft] K-4 capabilities

As we all await the arrival of the K-4, I'm wondering if the radio will
"remember" all of the settings per band. Specifically, I use different RF
settings per band and have to remember to reset the RF as I go from 160 to
20, for example. Will these settings and AF gain, etc be recalled per band?

Wayne, et al, tell us more about what you've been doing on the software
design side of the K-4 while "on vacation" at home?

73,
Art KZ5D
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Re: [Elecraft] KX2 sluggish/intermittent VFO display

[ab2tc]

Hi,

This doesn't sound like an encoder problem to me. Encoders have no memory,
so if the radio eventually responds to the encoder pulses and displays the
correct frequency after a delay, that delay must have occurred in the
microcontroller itself or possibly in the display module if it is an
"intelligent" one. To me it sounds if the KX2 microcontroller occasionally
gets overloaded and sluggish in responding to inputs.

Do you have anything connected to any ports, such as serial port, AUX port,
etc.? Pardon my ignorance on the KX2 here but most Elecraft radios, even the
smaller ones, have ports like these. I have seen in the past (maybe not with
an Elecraft product) radio brought to its knees from hyperactivity on a
serial port. Disconnect everything that is not essential to local (sitting
in front of) radio operation and see if the problem goes away.

AB2TC - Knut  



Lyle Johnson wrote
> All encoders in the KX2 are soldered you the control panel board.
> 
> 73,
> 
> Lyle KK7P 
> 
> Sent from my iPhone
> 
>> On Apr 19, 2020, at 3:57 AM, Heinz Baertschi 

> heinz.baertschi@

>  wrote:
>> 
>> 
>> Thanks Tom, interesting to know.
>> 
>> *When troubleshooting it would still be of great help to know how the KX2
>> encoder is connected to the main bord - plugged in or soldered?*
>> 
>> 73,
>> Heinz HB9BCB
>> 
>> 
>> 
>> Tommy wrote
>>>  I have seen the same on my KX2, while dialing it seems to freeze at 
>>> times for a second or so at a time. Even after being on only a few 
>>> minutes. Kind of annoying but not too worrying to me. At least for now. 
>>> Serial # 01927
>>> 
>>> 73 de Tom KB2SMS
>>> 
>>> 
 On 4/18/20 10:44 AM, Heinz Baertschi wrote:
> 





--
Sent from: http://elecraft.365791.n2.nabble.com/
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[Elecraft] K-4 capabilities

[Art Suberbielle]

As we all await the arrival of the K-4, I'm wondering if the radio will
"remember" all of the settings per band. Specifically, I use different RF
settings per band and have to remember to reset the RF as I go from 160 to
20, for example. Will these settings and AF gain, etc be recalled per band?

Wayne, et al, tell us more about what you've been doing on the software
design side of the K-4 while "on vacation" at home?

73,
Art KZ5D
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Re: [Elecraft] KATxxx Remote Tuner

[Lyn Norstad]

Rich -

 

" I’m a firm believer in 50 ohm matched antennas, but if a tuner is required it 
needs to be at the feed point."

 

While I prefer unmatched antennas fed with very low loss ladder line, I have 
always felt the tuner should be at the feedpoint of that line.  When I added 
the KPA500, I switched to the KAT500, and it’s not really practical to locate 
that remotely.  As a compromise, I am using a short (maybe 15 feet) length of 
coax from the KAT to a hybrid balun (1:1 / 4:1) in the attic which connects to 
the ladder line.  I actually notice no difference in performance (everything 
else remains unchanged).

 

That being said, a “remote” version of the KAT500 (or a KAT1500) would be of 
immense interest to me – so I will follow this thread closely.

 

73

Lyn, 

W0LEN

 

 

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Richard Thorne
Sent: Sunday, April 19, 2020 7:40 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] KATxxx Remote Tuner

 

 

Eric/Wayne,

 

Has there been any work done for a potential dedicated remote antenna tuner?

 

A remote tuner that could handle 500 or 1500 watts to match up with amps power 
wise (Or just a barefoot K3/K4). Maybe a black box between the LAN on the K4 or 
ACC on the K3 so control signals could be sent to the tuner via the coax.

 

I’m a firm believer in 50 ohm matched antennas, but if a tuner is required it 
needs to be at the feed point.

 

Rich - N5ZC

Sent from my iPad 

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Re: [Elecraft] KATxxx Remote Tuner

[ab2tc]

Hi Rich,

I totally agree with your last statement about the tuner placement.

I can't answer for Eric and Wayne and I am sure they will chime in in due
time. I haven't heard of any plans to introduce a weatherproofed version of
any of their tuners.

But the KAT500 is very easy to remote control and weatherproofing it with a
suitable enclosure is not rocket science either. I have been doing this for
about as long as the KAT500 has been in existence. My tuner is at the end of
a 100' buried LMR400DB cable and the only other cable is 120V power.
Communications is WiFI using a WiFi serial server from Lantronix. Then I
just use the KAT500 utility for controlling it. There is a few pictures of
the installation here:

http://ab2tc.com/

I have more pictures and other information, screenshots etc, if you contact
me via E-mail. My E-mail address is OK on qrz.com and it is easily guessable
anyway, hi.

You're mentioning controlling it via the coax. I am sure that using your
coax for a MoCa link is possible but it may be more trouble than it is
worth. I don't think MoCa bridges capable of withstanding 100's of watts of
RF are commercially available. While MoCa doesn't intentionally use HF there
might be lots of noise there interfering with your reception.
 
AB2TC - Knut


Richard Thorne-4 wrote
> Eric/Wayne,
> 
> Has there been any work done for a potential dedicated remote antenna
> tuner?
> 
> A remote tuner that could handle 500 or 1500 watts to match up with amps
> power wise (Or just a barefoot K3/K4). Maybe a black box between the LAN
> on the K4 or ACC on the K3 so control signals could be sent to the tuner
> via the coax.
> 
> I’m a firm believer in 50 ohm matched antennas, but if a tuner is required
> it needs to be at the feed point.
> 
> Rich - N5ZC
> Sent from my iPad
> __
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Re: [Elecraft] KX2 sluggish/intermittent VFO display

[Lyle Johnson]

All encoders in the KX2 are soldered you the control panel board.

73,

Lyle KK7P 

Sent from my iPhone

> On Apr 19, 2020, at 3:57 AM, Heinz Baertschi  
> wrote:
> 
> 
> Thanks Tom, interesting to know.
> 
> *When troubleshooting it would still be of great help to know how the KX2
> encoder is connected to the main bord - plugged in or soldered?*
> 
> 73,
> Heinz HB9BCB
> 
> 
> 
> Tommy wrote
>>  I have seen the same on my KX2, while dialing it seems to freeze at 
>> times for a second or so at a time. Even after being on only a few 
>> minutes. Kind of annoying but not too worrying to me. At least for now. 
>> Serial # 01927
>> 
>> 73 de Tom KB2SMS
>> 
>> 
>>> On 4/18/20 10:44 AM, Heinz Baertschi wrote:
>>> A colleague's KX2 has had the following symptom several times after
>>> approx. 2
>>> hours of portable operation at ambient temperatures of approx. 20-25 °C
>>> and
>>> locations in the shade or in the sun:
>>> 
>>> Sluggish and intermittent VFO display when dialling to a new frequency.
>>> The
>>> selected frequency then appeared correctly after approx. 0.5-1.5 seconds.
>>> 
>>> Has anyone noticed the same symptom and if so, what had to be done to fix
>>> it?
>>> 
>>> Any help would be appreciated?
>>> 
>>> 73 tks,
>>> Heinz HB9BCB
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[Elecraft] KATxxx Remote Tuner

[Richard Thorne]

Eric/Wayne,

Has there been any work done for a potential dedicated remote antenna tuner?

A remote tuner that could handle 500 or 1500 watts to match up with amps power 
wise (Or just a barefoot K3/K4). Maybe a black box between the LAN on the K4 or 
ACC on the K3 so control signals could be sent to the tuner via the coax.

I’m a firm believer in 50 ohm matched antennas, but if a tuner is required it 
needs to be at the feed point.

Rich - N5ZC
Sent from my iPad
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Re: [Elecraft] KX2 sluggish/intermittent VFO display

[Heinz Baertschi]

Thanks Tom, interesting to know.

*When troubleshooting it would still be of great help to know how the KX2
encoder is connected to the main bord - plugged in or soldered?*

73,
Heinz HB9BCB



Tommy wrote
>  I have seen the same on my KX2, while dialing it seems to freeze at 
> times for a second or so at a time. Even after being on only a few 
> minutes. Kind of annoying but not too worrying to me. At least for now. 
> Serial # 01927
> 
> 73 de Tom KB2SMS
> 
> 
> On 4/18/20 10:44 AM, Heinz Baertschi wrote:
>> A colleague's KX2 has had the following symptom several times after
>> approx. 2
>> hours of portable operation at ambient temperatures of approx. 20-25 °C
>> and
>> locations in the shade or in the sun:
>>
>> Sluggish and intermittent VFO display when dialling to a new frequency.
>> The
>> selected frequency then appeared correctly after approx. 0.5-1.5 seconds.
>>
>> Has anyone noticed the same symptom and if so, what had to be done to fix
>> it?
>>
>> Any help would be appreciated?
>>
>> 73 tks,
>> Heinz HB9BCB
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