Re: [Elecraft] HI CUR warning on K3

[Jim Brown]

On 11/8/2023 8:21 AM, Pete Smith N4ZR wrote:
I've fairly well established that the problem is not at the antenna, but 
arising somewhere in the grounding/RFI protection in my station, since 
it occurs only on one band and (more importantly) because it stopped 
totally after I re-tightened all the connections in my grounding system 
yesterday 


That can certainly be a major cause of problems with RF in the shack.


The Carolina Windom incorporates a line isolator 22 feet down from the 
feedpoint, but technical questions have been raised about exactly what 
you describe, and I'm not technical enough either to question the 
analysis or to experimentally measure the common mode current on the 
feedline.


ALL off-center-fed antennas are a train wreck for RF in the shack, and 
for blowing "line isolators" and chokes. This is because their strong 
imbalance puts huge common mode current on the feedline. They are a very 
bad idea, especially if running high power. Anything done to try to 
"fix" them is putting lipstick on a pig.


73, Jim K9YC

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Re: [Elecraft] K3 - Display flashes "thr 4 OFF" intermittently

[Fred Jensen]

Much of the K3 functionality as a radio is analog on the main RF board 
[well, except for the DSP of course].  I believe that many [most?] of 
the signals on the Coveted Golden Connector Pins are digital chatter 
between the brains and the other parts of the radio that tell them what 
to do but don't affect the functionality.  i.e. it might go to the wrong 
band, or BAND +/- might affect the mode instead, but all of the radio 
still works fine.  If you are so inclined to do a little bench work, you 
might try removing and reseating those connectors a couple of times ... 
maybe with a light coat of DeOxit.


Good luck.  In the "Olden Days," you could almost always find the 
problem by looking in the corner of the chassis where the small fire had 
started.


73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

Dave Fugleberg wrote on 11/8/2023 11:13 AM:
I thought about that, Fred, but my serial number is in the low 8000s. 
I assembled the kit. It came with the gold pins.
Could still be a bad connection I suppose. I've found at least 4 
different ways to trigger the behavior, but it doesn't seem to affect 
any functionality.


On Wed, Nov 8, 2023 at 1:04 PM Fred Jensen > wrote:


Has your K3 received the coveted Golden Connector Pins?  Mine [S/N
642] began doing things like that, especially on the BAND+/- and
MODE +/- buttons.  Pressing really hard would sometimes make it
work.  The K-POD proved to be a work around, but the new connector
pins on a trip to the factory for another problem solved it.

73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

Dave Fugleberg wrote on 11/8/2023 9:16 AM:

Thanks Keith - I totally missed that in the manual, as it's been a long
time since I've used the decode feature. I tried changing the threshold to
Auto...now I get the same behavior as before, except when it flashes it
says thr Auto.  So it's definitely showing me that menu setting, but I have
no idea why.
I should mention that the behavior does not occur every time. It happens
nearly any time i use the REV button, but maybe only one of of every 4-5
band changes will trigger it.  As noted, this happens sometimes when
changing bands via CAT, so it's not just from poking the front panel.
73 de W0ZF

On Wed, Nov 8, 2023 at 10:50 AM Keith Trinity WE6R 

wrote:


That "thr  4" is from the TEXT DEC  settings.
Long press CWT/0 (zero) button to see the setting.
I would think it would not do anything if "OFF", but try setting the
upper to AUTO or something.
There is a ton of info in the manual...
Keith WE6R K3/K4 Tech



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Re: [Elecraft] K3 - Display flashes "thr 4 OFF" intermittently

[Jack Brindle via Elecraft]

 the behavior I might expect if a macro was being executed. Is it possible that 
you have one saved, either in the K3 or the computer that is set to trigger at 
the times you noted? Mostly they execute so fast you don’t see the activity, 
but if the K3 is busy it might slow down a ways. Band change is one of those 
times.

73,
Jack, W6FB

> On Nov 8, 2023, at 1:04 PM, Fred Jensen  wrote:
> 
> Has your K3 received the coveted Golden Connector Pins?  Mine [S/N 642] began 
> doing things like that, especially on the BAND+/- and MODE +/- buttons.  
> Pressing really hard would sometimes make it work.  The K-POD proved to be a 
> work around, but the new connector pins on a trip to the factory for another 
> problem solved it.
> 
> 73,
> 
> Fred ["Skip"] K6DGW
> Sparks NV DM09dn
> Washoe County
> 
> Dave Fugleberg wrote on 11/8/2023 9:16 AM:
>> Thanks Keith - I totally missed that in the manual, as it's been a long
>> time since I've used the decode feature. I tried changing the threshold to
>> Auto...now I get the same behavior as before, except when it flashes it
>> says thr Auto.  So it's definitely showing me that menu setting, but I have
>> no idea why.
>> I should mention that the behavior does not occur every time. It happens
>> nearly any time i use the REV button, but maybe only one of of every 4-5
>> band changes will trigger it.  As noted, this happens sometimes when
>> changing bands via CAT, so it's not just from poking the front panel.
>> 73 de W0ZF
>> 
>> On Wed, Nov 8, 2023 at 10:50 AM Keith Trinity WE6R 
>> wrote:
>> 
>>> That "thr  4" is from the TEXT DEC  settings.
>>> Long press CWT/0 (zero) button to see the setting.
>>> I would think it would not do anything if "OFF", but try setting the
>>> upper to AUTO or something.
>>> There is a ton of info in the manual...
>>> Keith WE6R K3/K4 Tech
>>> 
>>> 
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Re: [Elecraft] K3 - Display flashes "thr 4 OFF" intermittently

[Dave Fugleberg]

I thought about that, Fred, but my serial number is in the low 8000s. I
assembled the kit. It came with the gold pins.
Could still be a bad connection I suppose. I've found at least 4 different
ways to trigger the behavior, but it doesn't seem to affect any
functionality.

On Wed, Nov 8, 2023 at 1:04 PM Fred Jensen  wrote:

> Has your K3 received the coveted Golden Connector Pins?  Mine [S/N 642]
> began doing things like that, especially on the BAND+/- and MODE +/-
> buttons.  Pressing really hard would sometimes make it work.  The K-POD
> proved to be a work around, but the new connector pins on a trip to the
> factory for another problem solved it.
>
> 73,
>
> Fred ["Skip"] K6DGW
> Sparks NV DM09dn
> Washoe County
>
> Dave Fugleberg wrote on 11/8/2023 9:16 AM:
>
> Thanks Keith - I totally missed that in the manual, as it's been a long
> time since I've used the decode feature. I tried changing the threshold to
> Auto...now I get the same behavior as before, except when it flashes it
> says thr Auto.  So it's definitely showing me that menu setting, but I have
> no idea why.
> I should mention that the behavior does not occur every time. It happens
> nearly any time i use the REV button, but maybe only one of of every 4-5
> band changes will trigger it.  As noted, this happens sometimes when
> changing bands via CAT, so it's not just from poking the front panel.
> 73 de W0ZF
>
> On Wed, Nov 8, 2023 at 10:50 AM Keith Trinity WE6R  
> 
> wrote:
>
>
> That "thr  4" is from the TEXT DEC  settings.
> Long press CWT/0 (zero) button to see the setting.
> I would think it would not do anything if "OFF", but try setting the
> upper to AUTO or something.
> There is a ton of info in the manual...
> Keith WE6R K3/K4 Tech
>
>
>
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Re: [Elecraft] K3 - Display flashes "thr 4 OFF" intermittently

[Fred Jensen]

Has your K3 received the coveted Golden Connector Pins? Mine [S/N 642] 
began doing things like that, especially on the BAND+/- and MODE +/- 
buttons.  Pressing really hard would sometimes make it work.  The K-POD 
proved to be a work around, but the new connector pins on a trip to the 
factory for another problem solved it.


73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

Dave Fugleberg wrote on 11/8/2023 9:16 AM:

Thanks Keith - I totally missed that in the manual, as it's been a long
time since I've used the decode feature. I tried changing the threshold to
Auto...now I get the same behavior as before, except when it flashes it
says thr Auto.  So it's definitely showing me that menu setting, but I have
no idea why.
I should mention that the behavior does not occur every time. It happens
nearly any time i use the REV button, but maybe only one of of every 4-5
band changes will trigger it.  As noted, this happens sometimes when
changing bands via CAT, so it's not just from poking the front panel.
73 de W0ZF

On Wed, Nov 8, 2023 at 10:50 AM Keith Trinity WE6R
wrote:


That "thr  4" is from the TEXT DEC  settings.
Long press CWT/0 (zero) button to see the setting.
I would think it would not do anything if "OFF", but try setting the
upper to AUTO or something.
There is a ton of info in the manual...
Keith WE6R K3/K4 Tech



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Re: [Elecraft] K3 - Display flashes "thr 4 OFF" intermittently

[Fred Jensen]

Has your K3 received the coveted Golden Connector Pins?  Mine [S/N 642] 
began doing things like that, especially on the BAND+/- and MODE +/- 
buttons.  Pressing really hard would sometimes make it work.  The K-POD 
proved to be a work around, but the new connector pins on a trip to the 
factory for another problem solved it.


73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

Dave Fugleberg wrote on 11/8/2023 9:16 AM:

Thanks Keith - I totally missed that in the manual, as it's been a long
time since I've used the decode feature. I tried changing the threshold to
Auto...now I get the same behavior as before, except when it flashes it
says thr Auto.  So it's definitely showing me that menu setting, but I have
no idea why.
I should mention that the behavior does not occur every time. It happens
nearly any time i use the REV button, but maybe only one of of every 4-5
band changes will trigger it.  As noted, this happens sometimes when
changing bands via CAT, so it's not just from poking the front panel.
73 de W0ZF

On Wed, Nov 8, 2023 at 10:50 AM Keith Trinity WE6R 
wrote:


That "thr  4" is from the TEXT DEC  settings.
Long press CWT/0 (zero) button to see the setting.
I would think it would not do anything if "OFF", but try setting the
upper to AUTO or something.
There is a ton of info in the manual...
Keith WE6R K3/K4 Tech



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[Elecraft] KX3 Auto Notch not working on SSB

[Dennis Dease]

On my KX3 when I'm in USB or LSB and long press NOTCH I get a N/A response.
When I am in AM and long press NOTCH i get an AUTO response (normal).
When in CW mode and long press NOTCH i get into manual notch mode (normal)

Wondering why in SSB I get N/A with a long press of NOTCH  ??

Thanks,
Dennis - N4NR
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Re: [Elecraft] K3 - Display flashes "thr 4 OFF" intermittently

[Dave Fugleberg]

Thanks Keith - I totally missed that in the manual, as it's been a long
time since I've used the decode feature. I tried changing the threshold to
Auto...now I get the same behavior as before, except when it flashes it
says thr Auto.  So it's definitely showing me that menu setting, but I have
no idea why.
I should mention that the behavior does not occur every time. It happens
nearly any time i use the REV button, but maybe only one of of every 4-5
band changes will trigger it.  As noted, this happens sometimes when
changing bands via CAT, so it's not just from poking the front panel.
73 de W0ZF

On Wed, Nov 8, 2023 at 10:50 AM Keith Trinity WE6R 
wrote:

> That "thr  4" is from the TEXT DEC  settings.
> Long press CWT/0 (zero) button to see the setting.
> I would think it would not do anything if "OFF", but try setting the
> upper to AUTO or something.
> There is a ton of info in the manual...
> Keith WE6R K3/K4 Tech
>
>
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Re: [Elecraft] K3 - Display flashes "thr 4 OFF" intermittently

[Keith Trinity WE6R]

That "thr  4" is from the TEXT DEC  settings.
Long press CWT/0 (zero) button to see the setting.
I would think it would not do anything if "OFF", but try setting the 
upper to AUTO or something.

There is a ton of info in the manual...
Keith WE6R K3/K4 Tech

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Re: [Elecraft] K3S Split Operation

[Bill Lederer]

Wes:

> I remember many years ago an expedition, (forgot who but their leader was
the
> banquet speaker at Visalia the one year I went, and he described this in
his
> talk)  They were operating SSB on 14.195 and announcing listening 5 to 10
up.
> But once in a while he would say, "Five to ten up...pause...and 14.190")
Of
> course everyone would immediately start calling up 5 to 10.  I called on
14.190
> and worked him on one call.

I can imagine it would be different on RTTY, but our CW operation from
Vanuatu from YJ0V/YJ0PD was quite instructive.  One approach to decoding
the signals, all almost on the same frequency, and peaking at S2, was to
find the edge of the pile and listen to the one you could decode.  Many of
the callers were quite savvy and would then jump to that frequency, making
that the new "center". And the process would repeat.

The thing about the rhythm (I mean this is a little different way than you
are using it here--I mean the timing) is that it is a very important
principle to use if many stations are calling you. Most of the crowd will
get the pattern and follow it. Without the pattern, things can quickly turn
into pandemonium. With the pattern, stations that don't hear you very well
can catch on and only transmit in the "window".  There were always a few
that wouldn't follow, but the significant majority would.

So the DX station has a lot of influence on the discipline of the pile.
DIfferent stations would follow it to different degrees. JA was relatively
loud compared to US and EU, so if we were trying to dig a US station out,
one simple call to "us only" would clear up a temporary lull. No JA station
would call then--none. So then we would do that for one or two QSOs and
then open it back up to all callers. There was one EU country that I won't
name that refused to follow any of our directions.

One first we did was to provide in near real-time (within a minute or two)
an acknowledgement on our web site that we had worked you. Our club
"Prairie DX" was the first to do this. VK0IR did something similar prior to
that, but it was not near real time. We first did it in the Saint Pierre
and Miquelon Dxpedeition. This saved the kind of heartache that was the
case with 3Y0J where there were pirates and you didn't know if you worked
them or not until they were done.

And yes--you don't need a second receiver to work split. But it is fun to
have a different antenna feeding into each ear, such as your transmitting
antenna in one ear, and an RBOG in the other. Fascinating stereo effect.

Sorry for this being quite off topic. While one of the radios we had was an
FT 1000 MP Mark V, in retrospect it would have been nice to have several
K3S.

w8lvn

On Tue, Nov 7, 2023 at 1:29 PM Wes  wrote:

> I'm more-or-less with Andy on this one except I use the big brother TS-890
> and
> don't need the external panadapter and I've never used CW Skimmer in my
> life.  I
> will say that the best bandscope/panadapter I've ever used was an SDR-IQ,
> running SpectraVue software on the i-f output of a K3 or K3S.
>
> In the TS-890, the RIT control can control the split TX frequency which is
> displayed on the bandscope screen.  I typically use it, without doing a
> TF-Set
> swap, to set my calling frequency.  There is much more in working split
> that
> just hopping on the last callers QRG.  More often than not, this is the
> wrong
> thing to do on CW.  SSB is usually different because the DX announces
> their
> listening frequency, but you have to listen.  Sometimes they spread the
> pile by
> saying up 5 to 15, but they only listen up 5.
>
> I remember many years ago an expedition, (forgot who but their leader was
> the
> banquet speaker at Visalia the one year I went, and he described this in
> his
> talk)  They were operating SSB on 14.195 and announcing listening 5 to 10
> up.
> But once in a while he would say, "Five to ten up...pause...and 14.190")
> Of
> course everyone would immediately start calling up 5 to 10.  I called on
> 14.190
> and worked him on one call.
>
> Sometimes the DX has a rhythm; they move up or down some Hz after each
> call.
> You need to figure this out.  But sometimes they simply don't.  I remember
> calling my friend, Ned, AA7A, when he was operating RTTY from either or
> both
> VP8STI/VP8SGI.  I called for about an hour while trying to figure out his
> pattern.  I finally figured out that he didn't have one.  I picked a QRG
> and
> stuck with it until he found me.  (I worked both stations)  I talked to
> him
> later at a club meeting and he confirmed he just spun the dial.
>
> If you want to use a second RX and call on the last caller's frequency,
> good for
> you, and better for me.
>
> Wes  N7WS
>
> On 11/7/2023 6:14 AM, Andy Durbin wrote:
> > That was a head spinning discussion!  No Elecraft transceiver here but
> I've been working single RX Split with a TS-590S for as long as I have
> owned it.
> >
> > For the TS-590 the key to working split pileups is the TF-SET key which
> 

Re: [Elecraft] HI CUR warning on K3

[Pete Smith N4ZR]

Hi John - I've fairly well established that the problem is not at the 
antenna, but arising somewhere in the grounding/RFI protection in my 
station, since it occurs only on one band and (more importantly) because 
it stopped totally after I re-tightened all the connections in my 
grounding system yesterday .


The Carolina Windom incorporates a line isolator 22 feet down from the 
feedpoint, but technical questions have been raised about exactly what 
you describe, and I'm not technical enough either to question the 
analysis or to experimentally measure the common mode current on the 
feedline.  Further complicating the issue, the feedline to my CW is very 
long - on the order of 250 feet, a mix of RG8-X and Buryflex.  This 
arose because I put the antenna switch at the base of my tower, and the 
feedpoint of the CW is at one extreme of what amounts to a triangle with 
the antenna switch and the shack.


73, Pete N4ZR

On 11/7/2023 11:15 PM, j...@kk9a.com wrote:

I am not very familiar with a Carolina Windom but I believe it is just a
horizonal wire fed off center.  These types of antennas can have significant
common mode current on the feedline. Perhaps there is more current on 40m
than on 80m so it works on 80m.

A resonant dipole with a choke may solve this HI CUR issue.

John KK9a




Pete Smith N4ZR wrote:

I send a few characters of CW into my Carolina Windom on 40M and after a
delay (1-5 seconds after I stop sending) the K3 flashes a HI CUR
warning, and the audio gain is reduced significantly.  Touch the AF gain
control and it instantly returns the gain to normal, but frequently the
HI CURR warning returns over and over, without any additional
transmissions.  This sequence does not happen, even with 1500 watts,
into my dummy load, nor does it happen on the same antenna on 80M, or on
20 meters on my tribander.

I've read the HI CUR warning discussion on page 65 of the manual, but it
doesn't seem relevant, because I don't have external speakers.  The fact
that it  only happens when feeding an actual antenna on one band
suggests RFI, but the fact that the HI CUR warning and gain reduction
recur again and again long after any RF has me puzzled.  Any suggestions
gratefully accepted!


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Re: [Elecraft] HI CUR warning on K3

[Pete Smith N4ZR]

Yeah, I had to replace both the line isolator and the 4:1 balun at the 
feedpoint after about 2 years.


73, Pete N4ZR

On 11/8/2023 11:02 AM, Tom Doligalski via Elecraft wrote:

I have used one for years. That said, I have had to replace the line isolator 
several times!

Also have one in the shack.

Tom W4KX

Sent from my iPad


On Nov 8, 2023, at 10:49 AM,j...@kk9a.com  wrote:

I am not very familiar with a Carolina Windom but I believe it is just a
horizonal wire fed off center.  These types of antennas can have significant
common mode current on the feedline. Perhaps there is more current on 40m
than on 80m so it works on 80m.

A resonant dipole with a choke may solve this HI CUR issue.

John KK9a




Pete Smith N4ZR wrote:

I send a few characters of CW into my Carolina Windom on 40M and after a
delay (1-5 seconds after I stop sending) the K3 flashes a HI CUR
warning, and the audio gain is reduced significantly.  Touch the AF gain
control and it instantly returns the gain to normal, but frequently the
HI CURR warning returns over and over, without any additional
transmissions.  This sequence does not happen, even with 1500 watts,
into my dummy load, nor does it happen on the same antenna on 80M, or on
20 meters on my tribander.

I've read the HI CUR warning discussion on page 65 of the manual, but it
doesn't seem relevant, because I don't have external speakers.  The fact
that it  only happens when feeding an actual antenna on one band
suggests RFI, but the fact that the HI CUR warning and gain reduction
recur again and again long after any RF has me puzzled.  Any suggestions
gratefully accepted!

--
73, Pete N4ZR

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Re: [Elecraft] HI CUR warning on K3

[Tom Doligalski via Elecraft]

I have used one for years. That said, I have had to replace the line isolator 
several times!

Also have one in the shack. 

Tom W4KX

Sent from my iPad 

> On Nov 8, 2023, at 10:49 AM, j...@kk9a.com wrote:
> 
> I am not very familiar with a Carolina Windom but I believe it is just a
> horizonal wire fed off center.  These types of antennas can have significant
> common mode current on the feedline. Perhaps there is more current on 40m
> than on 80m so it works on 80m.  
> 
> A resonant dipole with a choke may solve this HI CUR issue.
> 
> John KK9a
> 
> 
> 
> 
> Pete Smith N4ZR wrote:
> 
> I send a few characters of CW into my Carolina Windom on 40M and after a
> delay (1-5 seconds after I stop sending) the K3 flashes a HI CUR
> warning, and the audio gain is reduced significantly.  Touch the AF gain
> control and it instantly returns the gain to normal, but frequently the
> HI CURR warning returns over and over, without any additional
> transmissions.  This sequence does not happen, even with 1500 watts,
> into my dummy load, nor does it happen on the same antenna on 80M, or on
> 20 meters on my tribander.
> 
> I've read the HI CUR warning discussion on page 65 of the manual, but it
> doesn't seem relevant, because I don't have external speakers.  The fact
> that it  only happens when feeding an actual antenna on one band
> suggests RFI, but the fact that the HI CUR warning and gain reduction
> recur again and again long after any RF has me puzzled.  Any suggestions
> gratefully accepted!
> 
> --
> 73, Pete N4ZR
> 
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> Elecraft mailing list
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> Help: http://mailman.qth.net/mmfaq.htm
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> This list hosted by: http://www.qsl.net
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Re: [Elecraft] HI CUR warning on K3

[john]

I am not very familiar with a Carolina Windom but I believe it is just a
horizonal wire fed off center.  These types of antennas can have significant
common mode current on the feedline. Perhaps there is more current on 40m
than on 80m so it works on 80m.  

A resonant dipole with a choke may solve this HI CUR issue. 

John KK9a




Pete Smith N4ZR wrote:

I send a few characters of CW into my Carolina Windom on 40M and after a 
delay (1-5 seconds after I stop sending) the K3 flashes a HI CUR 
warning, and the audio gain is reduced significantly.  Touch the AF gain 
control and it instantly returns the gain to normal, but frequently the 
HI CURR warning returns over and over, without any additional 
transmissions.  This sequence does not happen, even with 1500 watts, 
into my dummy load, nor does it happen on the same antenna on 80M, or on 
20 meters on my tribander.

I've read the HI CUR warning discussion on page 65 of the manual, but it 
doesn't seem relevant, because I don't have external speakers.  The fact 
that it  only happens when feeding an actual antenna on one band 
suggests RFI, but the fact that the HI CUR warning and gain reduction 
recur again and again long after any RF has me puzzled.  Any suggestions 
gratefully accepted!

-- 
73, Pete N4ZR

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[Elecraft] For Sale: Elecraft 500W Power Combo

[mark]

Gang,

I'm parting with my KPA500 / KAT500 combo. Was new from Elecraft in February 
2021. Both units work perfectly and are cosmetically excellent. Includes 
original manuals, 120V power cable and fuses, 1x KXSER (E850463), tuner power 
cable, NEMA 6-15P power cable (the one I used), Key Line cable, Computer 
interface cable for tuner, Enhanced Mode Aux Cable set for KPA500 + second 
E850463 aux cable for KAT500. AUX Cable Set incl: 15-Pin to 15-Pin DE-15 + Key 
Line Interrupter adapter.

I'm simplifying my shack and “upgrading" to a KW. If the package does not sell 
in a reasonable time I'll consider splitting the items. Email me for photos.

The asking price is $3100 and will be shipped in original Elecraft packaging 
via UPS with insurance. Or save $150 with local pickup anywhere between Erie, 
PA and Rochester, NY if it is not snowing!

Payment options are PayPal, cash and USPS money order. I’ve been battling to 
get Zelle setup…

73, Mark Adams K2QO
FN03ra

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