Date   

Re: Factory service still available? [WSJT-X bug?]

John Canfield <bucket@...>
 

The weird thing is my K3S, PC and WSJT-X were all happy (aside from some operational issues with the app) and playing together nicely since about mid-December. The fly in the ointment could be a Win10 update hosed something up, I think I've had maybe two or three of those this year.

I wonder if Dr. Taylor is tracking bugs, I know there's a developer email list.


Re: Factory service still available?

Bob Benedict, KD8CGH
 

I had that intermittent TX problem with my K3. I had to power cycle the K3 to reset it to again TX. After a few email exchanges with Elecraft I think these recommended settings fixed it:
TX INH setting - Suggest set to OFF.
PTT setting - suggest OFF_OFF.
   73
     Bob   KD8CGH


Re: Factory service still available? [WSJT-X bug?]

Bob Bennett
 

I think it is the computer operating system which likes to go back to its factory set default. The Flex Radio SmartSDR has the same problem and the developers seemed, at least in Windows, to concede to Win10 and tell users not to use the Flex audio settings as the default Windows sound settings. 


Bob NZ2Z 


Re: Factory service still available?

John Canfield <bucket@...>
 

Thank you Bob for the ideas. I just put the K3s into Tune and sure enough I was seeing the usual 20 watts (what I usually use with the amplifier) out on my station monitor so there's not an RF problem with the radio. Yesterday I rebooted the adjunct PC with no change. I haven't checked all bands - I usually operate on 20 and 40m so I need to do a thorough evaluation.

I'll have to look in the parts box for some toroids.


Re: 100 watt PA issue

Jeffrey griffin
 

I honestly don’t think I ran the K3 at more than 7 watts, to drive the AMP there is much info on this in the archives about the 12 watt usage, I just don’t remember. Unless 7 watts data usage is a problem?  Or the failure must have been brought on by the occasional 100 watts data usage? Most of the time, about 99%, I would just use the KPA500 with the K3 at around 20 watts drive on the data modes. The KAT500 in all operating modes was always on line. I’m using a fan dipole that is pretty close to resonant on the banks in question. So maybe the KAT500 has an issue? Anyway I’m going to call Elecraft and see if I can order a replacement L23. I’m going to replace it and do some testing. Hopefully I just did do something dumb, and this fixes the problem…

 

73 Jeff kb2m

 

From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> On Behalf Of robert hammond via groups.io
Sent: Monday, May 04, 2020 4:21
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] 100 watt PA issue

 

Jeff,
The “Achilles heel “ in the K3 power stages is the 12 watt amplifier which is only conduction cooled. In normal use on SSB/ CW modes it seem to be fine all day at 12 watts out ( 8 watts out on 50MHz) Running data modes with 100% duty cycle at fully rated power 12 watts you can feel the back of the K3 chassis is uncomfortably hot after 30 minutes “running” . 

Running a K3 at 100 watts out,  the 12 watt amp is probably running 10 watts plus to drive the PA? The fan will cool the PA but don’t know how effective that is at cooling the 12 watt amp stage. 
Having said that ....have run my  K3 at 100 watts in CQ WW RTTY for long periods without problems .... 

Maybe the clever guys at Elecraft could introduce a mod to set the max power out of the 12 watt amp to only say 6 watts when running data modes? , and thus engaging the final PA stage sooner than is currently the case? 

I have a choice here on data modes running either 75 watts out of the KPA500 using a conservative 6-7 watts out of the K3 , or to set 14 watts out of the K3 to run around 175 watts out of the KPA500. This avoids the 12 watt PA being run greater than half power on 100% duty modes. 

73

Bob G4DBW


Re: 100 watt PA issue

Bob Hammond G4DBW
 

Jeff,
The “Achilles heel “ in the K3 power stages is the 12 watt amplifier which is only conduction cooled. In normal use on SSB/ CW modes it seem to be fine all day at 12 watts out ( 8 watts out on 50MHz) Running data modes with 100% duty cycle at fully rated power 12 watts you can feel the back of the K3 chassis is uncomfortably hot after 30 minutes “running” . 

Running a K3 at 100 watts out,  the 12 watt amp is probably running 10 watts plus to drive the PA? The fan will cool the PA but don’t know how effective that is at cooling the 12 watt amp stage. 
Having said that ....have run my  K3 at 100 watts in CQ WW RTTY for long periods without problems .... 

Maybe the clever guys at Elecraft could introduce a mod to set the max power out of the 12 watt amp to only say 6 watts when running data modes? , and thus engaging the final PA stage sooner than is currently the case? 

I have a choice here on data modes running either 75 watts out of the KPA500 using a conservative 6-7 watts out of the K3 , or to set 14 watts out of the K3 to run around 175 watts out of the KPA500. This avoids the 12 watt PA being run greater than half power on 100% duty modes. 

73

Bob G4DBW


Re: Factory service still available?

Bob Hammond G4DBW
 

John,
This could very likely be an RFI problem, with RF getting into the PTT circuit. I had a similar problem.
Try reducing the rf output to A very low value say 1 watt, and see if everything runs reliably as it should.  Does it occur on all bands ? Had  problems here on top band , and only after messing around fitting ferrite toroidal did wsjt-x work reliably. 
So much depends on how much rf is floating around in your shack. 


Good luck

Bob G4DBW


K3s CODEC access

Jim Denneny
 

I have lost Audio CODEC audio option in WSJT-X.  It was working but no longer in WSJT?Setting/ audio dropdown.  How do I restore CODEC for WSJT-X?

73, Jim K7EG


Re: 100 watt PA issue

K9MA
 

L23 is in the 20/30m low pass filter. The only thing I can imagine could cause it to fail is a very badly mismatched load with just the wrong impedance. It's also possible, of course, that L23 was just defective.

It would not have affected operation on any other bands.

73,
Scott K9MA




On 5/3/2020 18:37, Jeffrey griffin wrote:

Well I was asking anyone if they had a clue about L23, I guess not  :-)

 

I will call Elecraft tomorrow…

 

73 Jeff kb2m

 

From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> On Behalf Of Wes Stewart via groups.io
Sent: Sunday, May 03, 2020 18:34
To: elecraft-k3@groups.io; Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] 100 watt PA issue

 

And the IMD will be awful.

 

Wes  N7WS

 

On Sunday, May 3, 2020, 2:59:43 PM MST, john ni0k <jasimmons@...> wrote:

 

 

Running 12 watts on data modes is bad. The low power PA won't withstand that.

-de John NI0K

Jeffrey griffin wrote on 5/3/2020 12:35 PM:

Last summer I was running more data modes (FT8) when I started having an issue with the 100 watt PA failing with a ERR 12V message. I then did the KP3A power connector replacement. This worked fine for a few months. It was working fine till I once again noticed a strong burnt electronics smell coming from the K3's PA. I at that time just used it at 12 watts to Drive the KPA500 for a while as this worked fine. Today I decided to take it apart and try to determine what the issue is. After removing the  KP3A module I noticed that L23 on the main board is severely heat damaged. I wasn't expecting this, I was looking to inspect the power connector that I had fixed with the gold pins 6 months ago. Anyone have any thoughts on why L23 would fail? Before I send it to Elecraft. Thanks...
 
73 Jeff kb2m 
 
 
 
 

 


-- 
Scott  K9MA

k9ma@...


Re: 100 watt PA issue

Wes Stewart
 

According to the schematic I have, L23 is part of the 20/30 meter output LPF.  If it's been overheated I suspect a mismatched load was encountered at some time. Does your problem occur only 30 and/or 20 meters?  If so, I think you have your answer.

Wes  N7WS

On Sunday, May 3, 2020, 4:37:40 PM MST, Jeffrey griffin <kb2mjeff@...> wrote:


Well I was asking anyone if they had a clue about L23, I guess not  :-)

 

I will call Elecraft tomorrow…

 

73 Jeff kb2m

 

From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> On Behalf Of Wes Stewart via groups.io
Sent: Sunday, May 03, 2020 18:34
To: elecraft-k3@groups.io; Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] 100 watt PA issue

 

And the IMD will be awful.

 

Wes  N7WS

 

On Sunday, May 3, 2020, 2:59:43 PM MST, john ni0k <jasimmons@...> wrote:

 

 

Running 12 watts on data modes is bad. The low power PA won't withstand that.

-de John NI0K

Jeffrey griffin wrote on 5/3/2020 12:35 PM:

Last summer I was running more data modes (FT8) when I started having an issue with the 100 watt PA failing with a ERR 12V message. I then did the KP3A power connector replacement. This worked fine for a few months. It was working fine till I once again noticed a strong burnt electronics smell coming from the K3's PA. I at that time just used it at 12 watts to Drive the KPA500 for a while as this worked fine. Today I decided to take it apart and try to determine what the issue is. After removing the  KP3A module I noticed that L23 on the main board is severely heat damaged. I wasn't expecting this, I was looking to inspect the power connector that I had fixed with the gold pins 6 months ago. Anyone have any thoughts on why L23 would fail? Before I send it to Elecraft. Thanks...
  
73 Jeff kb2m 
  
  
  
  

 


Re: 100 watt PA issue

Jeffrey griffin
 

Well I was asking anyone if they had a clue about L23, I guess not  :-)

 

I will call Elecraft tomorrow…

 

73 Jeff kb2m

 

From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> On Behalf Of Wes Stewart via groups.io
Sent: Sunday, May 03, 2020 18:34
To: elecraft-k3@groups.io; Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] 100 watt PA issue

 

And the IMD will be awful.

 

Wes  N7WS

 

On Sunday, May 3, 2020, 2:59:43 PM MST, john ni0k <jasimmons@...> wrote:

 

 

Running 12 watts on data modes is bad. The low power PA won't withstand that.

-de John NI0K

Jeffrey griffin wrote on 5/3/2020 12:35 PM:

Last summer I was running more data modes (FT8) when I started having an issue with the 100 watt PA failing with a ERR 12V message. I then did the KP3A power connector replacement. This worked fine for a few months. It was working fine till I once again noticed a strong burnt electronics smell coming from the K3's PA. I at that time just used it at 12 watts to Drive the KPA500 for a while as this worked fine. Today I decided to take it apart and try to determine what the issue is. After removing the  KP3A module I noticed that L23 on the main board is severely heat damaged. I wasn't expecting this, I was looking to inspect the power connector that I had fixed with the gold pins 6 months ago. Anyone have any thoughts on why L23 would fail? Before I send it to Elecraft. Thanks...
 
73 Jeff kb2m 
 
 
 
 

 


Re: Factory service still available? [WSJT-X bug?]

Rick <rick.22202@...>
 

Precisely. Same issue here. The fact that the TX audio "comes back" when WSJT-X is restarted seems to strongly suggest the issue is with WSJT-X.

I have the same issue with no transmit audio. This occurs after my
screen power setting turns off my display. Upon turning the display
back on, no transmit audio is sent.

Once this happens, I can restart WSJT to fix it. Or change the TX sound
card to a wrong value and then change it back to the correct value.
Interesting once I fix it this way, further screen power being turned
off does not cause the problem.

This has to be a WSJT bug.


Re: 100 watt PA issue

Wes Stewart
 

And the IMD will be awful.

Wes  N7WS

On Sunday, May 3, 2020, 2:59:43 PM MST, john ni0k <jasimmons@...> wrote:


Running 12 watts on data modes is bad. The low power PA won't withstand that.

-de John NI0K

Jeffrey griffin wrote on 5/3/2020 12:35 PM:
Last summer I was running more data modes (FT8) when I started having an issue with the 100 watt PA failing with a ERR 12V message. I then did the KP3A power connector replacement. This worked fine for a few months. It was working fine till I once again noticed a strong burnt electronics smell coming from the K3's PA. I at that time just used it at 12 watts to Drive the KPA500 for a while as this worked fine. Today I decided to take it apart and try to determine what the issue is. After removing the  KP3A module I noticed that L23 on the main board is severely heat damaged. I wasn't expecting this, I was looking to inspect the power connector that I had fixed with the gold pins 6 months ago. Anyone have any thoughts on why L23 would fail? Before I send it to Elecraft. Thanks...

73 Jeff kb2m 






Re: Elecraft K3 for sale ...

Clay Autery
 

They are just communicating the general disdain for folks trying to run an auction on and Elecraft group.

Set an asking price, and be done with it.

This ain't e-Bay!

______________________
Clay Autery, KY5G
(318) 518-1389
On 05/03/20 14:14, Jerry wrote:

I see a trend here and it gonna get ugly!

-----Original Message-----
From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> On Behalf Of Ware Master
Sent: Sunday, May 3, 2020 14:12 PM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] Elecraft K3 for sale ...

My bid 52$
On May 3, 2020, at 1:16 PM, Martin Kratoska <martin@...> wrote:

my bid: $51  :-))))))

73,
Martin, OK1RR

Dne 03. 05. 20 v 17:05 dean laclair napsal(a):
I'll start the Bidiing out at $50
On Sun, May 3, 2020, 08:22 Olli <droese@...> wrote:
For sale in Germany (preferably) or Europe:

K3/100-F #8232    Factory Assembled, including:
KRX3    Sub RX module
KFL3A-2.7k    2.7 kHz Roofing Filter in Main RX
KFL3A-2.7k    2.7 kHz Roofing Filter in Sub RX (matched to main RX)
KFL3A-500    500 Hz Roofing Filter in Main RX
KFL3A-500    500 Hz Roofing Filter in Sub RX (matched to main RX)
KFL3B-FM    15 kHz AM/FM b/w Roofing Filter in Main RX
KXV3A    RX Ant / IF Out / Transverter Interface Board
K144XV    144-148 MHz 10 W Internal Transverter Modul Transverter
K144RFLK    Reflock-Board for Internal 2 m Transverter

Package & postage within Germany to be paid by me. To be negotiated 
for sale in Europe.

Highest bid wins. ;-)

73, Olli - DH8BQA

--

Contest, DX & radio projects: https://www.dh8bqa.de/
















Re: 100 watt PA issue

Jeffrey griffin
 

I remember all of this now. Actually  I was running about 7 watts to drive the AMP after I had the PA failure at 100 watts, there were no issues at 7 watts. I was trying to make the point that I was avoiding the 100 watt PA by running under 12 watts. Sorry for the confusing first email. This all happened in October while I was still at my summer home. Been awhile, I just got around to working on this here in Florida today. Use my Flex 6500 here and the K3 sat since November as I use it just in NJ but brought it here to work on.

 So to clarify the problem was at 100 watts or so while running data modes, SSB QSO’s were no issue. Data contacts at 7 watts to drive the KPA500 was also no problem. I never had a problem with my K3 since 2007 until last year or so with the more frequent data mode duty cycles

 

73 Jeff kb2m

 

From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> On Behalf Of john ni0k
Sent: Sunday, May 03, 2020 17:59
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] 100 watt PA issue

 

Running 12 watts on data modes is bad. The low power PA won't withstand that.

-de John NI0K

Jeffrey griffin wrote on 5/3/2020 12:35 PM:

Last summer I was running more data modes (FT8) when I started having an issue with the 100 watt PA failing with a ERR 12V message. I then did the KP3A power connector replacement. This worked fine for a few months. It was working fine till I once again noticed a strong burnt electronics smell coming from the K3's PA. I at that time just used it at 12 watts to Drive the KPA500 for a while as this worked fine. Today I decided to take it apart and try to determine what the issue is. After removing the  KP3A module I noticed that L23 on the main board is severely heat damaged. I wasn't expecting this, I was looking to inspect the power connector that I had fixed with the gold pins 6 months ago. Anyone have any thoughts on why L23 would fail? Before I send it to Elecraft. Thanks...
 
73 Jeff kb2m 
 
 
 
 

 


Re: 100 watt PA issue

john ni0k
 

Running 12 watts on data modes is bad. The low power PA won't withstand that.

-de John NI0K

Jeffrey griffin wrote on 5/3/2020 12:35 PM:

Last summer I was running more data modes (FT8) when I started having an issue with the 100 watt PA failing with a ERR 12V message. I then did the KP3A power connector replacement. This worked fine for a few months. It was working fine till I once again noticed a strong burnt electronics smell coming from the K3's PA. I at that time just used it at 12 watts to Drive the KPA500 for a while as this worked fine. Today I decided to take it apart and try to determine what the issue is. After removing the  KP3A module I noticed that L23 on the main board is severely heat damaged. I wasn't expecting this, I was looking to inspect the power connector that I had fixed with the gold pins 6 months ago. Anyone have any thoughts on why L23 would fail? Before I send it to Elecraft. Thanks...

73 Jeff kb2m 






Re: Elecraft K3 for sale ...

Ware Master
 

Agreed hence the ridiculously low  bids


On May 3, 2020, at 4:54 PM, Charlie T, k3ICH <pincon@...> wrote:



I thought “auctions” were not allowed on this site (???)

 

Chas

 

 

From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> On Behalf Of dean laclair
Sent: Sunday, May 03, 2020 11:08 AM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] Elecraft K3 for sale ...

 

But honestly, what's your price?

I'm sure folks would like an idea.

The auction site is over there.

Thanks, 73

 

Dean /K2WW

 

On Sun, May 3, 2020, 08:22 Olli <droese@...> wrote:

For sale in Germany (preferably) or Europe:

K3/100-F #8232    Factory Assembled, including:
KRX3    Sub RX module
KFL3A-2.7k    2.7 kHz Roofing Filter in Main RX
KFL3A-2.7k    2.7 kHz Roofing Filter in Sub RX (matched to main RX)
KFL3A-500    500 Hz Roofing Filter in Main RX
KFL3A-500    500 Hz Roofing Filter in Sub RX (matched to main RX)
KFL3B-FM    15 kHz AM/FM b/w Roofing Filter in Main RX
KXV3A    RX Ant / IF Out / Transverter Interface Board
K144XV    144-148 MHz 10 W Internal Transverter Modul Transverter
K144RFLK    Reflock-Board for Internal 2 m Transverter

Package & postage within Germany to be paid by me. To be negotiated for
sale in Europe.

Highest bid wins. ;-)

73, Olli - DH8BQA

--

Contest, DX & radio projects: https://www.dh8bqa.de/





Re: Elecraft K3 for sale ...

Charlie T, k3ICH
 

I thought “auctions” were not allowed on this site (???)

 

Chas

 

 

From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> On Behalf Of dean laclair
Sent: Sunday, May 03, 2020 11:08 AM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] Elecraft K3 for sale ...

 

But honestly, what's your price?

I'm sure folks would like an idea.

The auction site is over there.

Thanks, 73

 

Dean /K2WW

 

On Sun, May 3, 2020, 08:22 Olli <droese@...> wrote:

For sale in Germany (preferably) or Europe:

K3/100-F #8232    Factory Assembled, including:
KRX3    Sub RX module
KFL3A-2.7k    2.7 kHz Roofing Filter in Main RX
KFL3A-2.7k    2.7 kHz Roofing Filter in Sub RX (matched to main RX)
KFL3A-500    500 Hz Roofing Filter in Main RX
KFL3A-500    500 Hz Roofing Filter in Sub RX (matched to main RX)
KFL3B-FM    15 kHz AM/FM b/w Roofing Filter in Main RX
KXV3A    RX Ant / IF Out / Transverter Interface Board
K144XV    144-148 MHz 10 W Internal Transverter Modul Transverter
K144RFLK    Reflock-Board for Internal 2 m Transverter

Package & postage within Germany to be paid by me. To be negotiated for
sale in Europe.

Highest bid wins. ;-)

73, Olli - DH8BQA

--

Contest, DX & radio projects: https://www.dh8bqa.de/





Re: Elecraft K3 for sale ...

Jerry
 

I see a trend here and it gonna get ugly!

-----Original Message-----
From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> On Behalf Of Ware Master
Sent: Sunday, May 3, 2020 14:12 PM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] Elecraft K3 for sale ...

My bid 52$
On May 3, 2020, at 1:16 PM, Martin Kratoska <martin@ok1rr.com> wrote:

my bid: $51 :-))))))

73,
Martin, OK1RR

Dne 03. 05. 20 v 17:05 dean laclair napsal(a):
I'll start the Bidiing out at $50
On Sun, May 3, 2020, 08:22 Olli <droese@necg.de> wrote:
For sale in Germany (preferably) or Europe:

K3/100-F #8232 Factory Assembled, including:
KRX3 Sub RX module
KFL3A-2.7k 2.7 kHz Roofing Filter in Main RX
KFL3A-2.7k 2.7 kHz Roofing Filter in Sub RX (matched to main RX)
KFL3A-500 500 Hz Roofing Filter in Main RX
KFL3A-500 500 Hz Roofing Filter in Sub RX (matched to main RX)
KFL3B-FM 15 kHz AM/FM b/w Roofing Filter in Main RX
KXV3A RX Ant / IF Out / Transverter Interface Board
K144XV 144-148 MHz 10 W Internal Transverter Modul Transverter
K144RFLK Reflock-Board for Internal 2 m Transverter

Package & postage within Germany to be paid by me. To be negotiated
for sale in Europe.

Highest bid wins. ;-)

73, Olli - DH8BQA

--

Contest, DX & radio projects: https://www.dh8bqa.de/








Re: Elecraft K3 for sale ...

Ware Master
 

My bid 52$

On May 3, 2020, at 1:16 PM, Martin Kratoska <martin@ok1rr.com> wrote:

my bid: $51 :-))))))

73,
Martin, OK1RR

Dne 03. 05. 20 v 17:05 dean laclair napsal(a):
I'll start the Bidiing out at $50
On Sun, May 3, 2020, 08:22 Olli <droese@necg.de> wrote:
For sale in Germany (preferably) or Europe:

K3/100-F #8232 Factory Assembled, including:
KRX3 Sub RX module
KFL3A-2.7k 2.7 kHz Roofing Filter in Main RX
KFL3A-2.7k 2.7 kHz Roofing Filter in Sub RX (matched to main RX)
KFL3A-500 500 Hz Roofing Filter in Main RX
KFL3A-500 500 Hz Roofing Filter in Sub RX (matched to main RX)
KFL3B-FM 15 kHz AM/FM b/w Roofing Filter in Main RX
KXV3A RX Ant / IF Out / Transverter Interface Board
K144XV 144-148 MHz 10 W Internal Transverter Modul Transverter
K144RFLK Reflock-Board for Internal 2 m Transverter

Package & postage within Germany to be paid by me. To be negotiated for
sale in Europe.

Highest bid wins. ;-)

73, Olli - DH8BQA

--

Contest, DX & radio projects: https://www.dh8bqa.de/







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