Date   

WSJT-X audio problems

Richard Lawn
 

Since the last Windows 10 update I've been having erratic audio issues with WSJT=X and my K3. When I try to initiate transmit on WSJT the K3 goes into transmit and there is a brief sign of RF on the radio but suddenly an error message regarding audio pops up in WSJT-X. Audio is set correctly and I've checked the output from the computer and it is correct. 

I set up FlDigi and expected to see the same results and I did not. It works fine. So I'm beginning to suspect a problem with WSJT-X. Maybe I should just uninstall it and reinstall. Anyone else experience this problem withe their K3 with WSJT-X?

Rick, W2JAZ


Re: KPA3 output erratic

Chuck Miller
 

Yep, I tested it with 2 different dummy loads, acts the same way on both. One in the MFJ tuner, and a cantenna.

Thanks, and 73
Chuck
N0NC


Re: KPA3 output erratic

mikerodgerske5gbc
 

I guess your running D.C. Straight from the astron to the k3 which is preferred. 

73
Mike R

7!
Absolutely Awesome 


Re: KPA3 output erratic

Ray Maxfield
 

Have  you tested it with a Dummy Load ?

Ray  WA6VAB

 

From: Chuck Miller
Sent: Sunday, August 9, 2020 4:23 PM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] KPA3 output erratic

 

What amount of sag is useable? I removed the inline fuse from the power cable, and cranked the 35 amp Astron up to 14.2 volt according to the K3. It drops to 13 volts at 100w watts. The power cable is about 6 feet long as the Astron is a rack mount, and sits on the floor. The power is slow to rise mostly on 160 and 80, and to a less amount on 60 meters. 30 meters and up don't have that lagging power. Still got to check all my coax jumpers
.
73, Chuck
N0NC

 


Re: KPA3 output erratic

Chuck Miller
 

What amount of sag is useable? I removed the inline fuse from the power cable, and cranked the 35 amp Astron up to 14.2 volt according to the K3. It drops to 13 volts at 100w watts. The power cable is about 6 feet long as the Astron is a rack mount, and sits on the floor. The power is slow to rise mostly on 160 and 80, and to a less amount on 60 meters. 30 meters and up don't have that lagging power. Still got to check all my coax jumpers
.
73, Chuck
N0NC


Re: KPA500, Win4K3, and DDU

w3qt_mike
 

That's the problem, Bob.  I need 2 physical ports and only have one on the KPA500.  (Labeled RS232 (PC)).  Before I went with the DDU I had the amp connected to the PC through this port and then everything (DXLab Suite, K3s, KPA500, KAT500) controlled via Win4K3.  The DDU must be connected to the KPA500 port for polling, meaning I'm now short the port for connecting the amp to the PC.   Am I missing someting?

73, Mike, W3QT


Re: KPA500, Win4K3, and DDU

w3qt_mike
 

John,

Thanks for your thoughts.  The problem isn't on the Win4K3 end.  I used to have the amp connected to the PC with Win4K3, and it worked out very well, but now I need two free RS232 ports on the amp - one for the DDU and one for the Win4K3 connection to the PC.  Easiest will be a simple manual switch to force a 2 from 1 port count. 

73,
Mike, W3QT


Re: KPA500, Win4K3, and DDU

w3qt_mike
 

You read the issue correctly from my post.  One serial port - two ports for PC required.  A manual DB9 switch looks to be the answer.

73,
Mike, W3QT


Re: KPA500, Win4K3, and DDU

redarlington <rdarlington@...>
 

Actually, you'd want to connect it to a physical PC port that you map to the rig via com0com.  That would work.  That's how I get my loop controller to talk to my rig through the PC over USB while running various other software packages like n1mm, n3fjp, wsjtx, all at the same time.

-Bob N3XKB

On Fri, Aug 7, 2020 at 8:27 PM John H. Long Jr. <john@...> wrote:
Have you tried connecting it through one of the win4k3s virtual ports?



Sent from my Verizon, Samsung Galaxy smartphone


-------- Original message --------
From: redarlington <rdarlington@...>
Date: 8/7/20 5:16 PM (GMT-07:00)
Subject: Re: [Elecraft-K3] KPA500, Win4K3, and DDU

Seems like a 15 minute job to code up the equivalent (and then some) for a PC.  I don't have one of these amps so I'm not the right guy, but it's likely trivial.   Not everybody runs a computer attached to their rig full time, so this gadget fills the gap for sure.  But if you do, then this thing won't work at all unless I misunderstand something (It uses the serial port you'd connect to your pc to control the rig -I think anyway). 

-Bob N3XKB

On Thu, Aug 6, 2020 at 10:34 AM w3qt_mike <w3qt@...> wrote:

Recently purchased one of KV5J’s Digital Display Units.  Physically attractive, it’s a nice addition to the shack and makes monitoring my KPA500 vitals a snap.  The unit, however, also gives rise to an unintended consequence.  In order to poll the amp it has to be connected to the amp’s RS232 (PC) port.  I also use Win4K3.  In order to use Win4K3 with the amp it has to be connected to the computer via the same RS232 (PC) port that would be used by the DDU.  A DB9 splitter cable will not work.  A DB9 manual switch box would work, but having to physically turn a switch eliminates computer control, so why not just manually operate the KPA500?  Eliminating the manual switch box reduces my options with the amp to an “either/or” choice – Win4K3 and no DDU or DDU and no Win4K3.  Has anyone else encountered this issue, and, if so, what is your workaround? 

 


Re: KPA500, Win4K3, and DDU

John H. Long Jr. <john@...>
 

Have you tried connecting it through one of the win4k3s virtual ports?



Sent from my Verizon, Samsung Galaxy smartphone


-------- Original message --------
From: redarlington <rdarlington@...>
Date: 8/7/20 5:16 PM (GMT-07:00)
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] KPA500, Win4K3, and DDU

Seems like a 15 minute job to code up the equivalent (and then some) for a PC.  I don't have one of these amps so I'm not the right guy, but it's likely trivial.   Not everybody runs a computer attached to their rig full time, so this gadget fills the gap for sure.  But if you do, then this thing won't work at all unless I misunderstand something (It uses the serial port you'd connect to your pc to control the rig -I think anyway). 

-Bob N3XKB

On Thu, Aug 6, 2020 at 10:34 AM w3qt_mike <w3qt@...> wrote:

Recently purchased one of KV5J’s Digital Display Units.  Physically attractive, it’s a nice addition to the shack and makes monitoring my KPA500 vitals a snap.  The unit, however, also gives rise to an unintended consequence.  In order to poll the amp it has to be connected to the amp’s RS232 (PC) port.  I also use Win4K3.  In order to use Win4K3 with the amp it has to be connected to the computer via the same RS232 (PC) port that would be used by the DDU.  A DB9 splitter cable will not work.  A DB9 manual switch box would work, but having to physically turn a switch eliminates computer control, so why not just manually operate the KPA500?  Eliminating the manual switch box reduces my options with the amp to an “either/or” choice – Win4K3 and no DDU or DDU and no Win4K3.  Has anyone else encountered this issue, and, if so, what is your workaround? 

 


Re: KPA500, Win4K3, and DDU

redarlington <rdarlington@...>
 

Seems like a 15 minute job to code up the equivalent (and then some) for a PC.  I don't have one of these amps so I'm not the right guy, but it's likely trivial.   Not everybody runs a computer attached to their rig full time, so this gadget fills the gap for sure.  But if you do, then this thing won't work at all unless I misunderstand something (It uses the serial port you'd connect to your pc to control the rig -I think anyway). 

-Bob N3XKB


On Thu, Aug 6, 2020 at 10:34 AM w3qt_mike <w3qt@...> wrote:

Recently purchased one of KV5J’s Digital Display Units.  Physically attractive, it’s a nice addition to the shack and makes monitoring my KPA500 vitals a snap.  The unit, however, also gives rise to an unintended consequence.  In order to poll the amp it has to be connected to the amp’s RS232 (PC) port.  I also use Win4K3.  In order to use Win4K3 with the amp it has to be connected to the computer via the same RS232 (PC) port that would be used by the DDU.  A DB9 splitter cable will not work.  A DB9 manual switch box would work, but having to physically turn a switch eliminates computer control, so why not just manually operate the KPA500?  Eliminating the manual switch box reduces my options with the amp to an “either/or” choice – Win4K3 and no DDU or DDU and no Win4K3.  Has anyone else encountered this issue, and, if so, what is your workaround? 

 


Re: KPA3 output erratic

Brian K0DTJ
 

Take a close look at the supply voltage as seen at the K3 during transmit. Significant sag will drive the power control algorithm nuts. I had a similar problem, although not as severe. Replacing the power lead with shorter, fatter wire and upping the supply voltage to 14.2 v did the trick. HTH

73,
Brian, K0DTJ

On Aug 6, 2020, at 20:16, Chuck Miller <cwmiller20@...> wrote:

Still fighting a problem with my K3. When below 12 watts, every thing is fine. above 12 watts (where the KPA3 kicks in) most of the time it 0 watts, but about the same current you would expect for 100 watts. then after repeated tries, the power will come up and be stable. then the next time I press tune it is back to 0 watts. I notice if I press tune, or press the key in cw, the power is 0 for several seconds (long enough for me to send my callsign 3 or 4 times) and then the power comes back again. It will not pass TX gain calibration because the power does not rise immediately but takes several seconds. Any ideas?

73, Chuck
N0NC


Re: FS Elecraft K3 w/options SOLD

Dwight Bosselman <NS9I@...>
 

SOLD

On 8/7/2020 8:17 AM, Dwight Bosselman wrote:
S/N #3095 (Mfd May 23, 2009)

1. KRX3 HIGH-PERFORMANCE SUBRECEIVER
2. KAT3 100-WATT AUTOMATIC ANTENNA TUNER
3. KIO3BUPKT KIO3B Upgrade Kits USB Cable to computer, 6-12M Pre-amp
4. KSYN3A SYNTHESIZERS Upgrade including one for the sub-rcvr
5. KPA3  Internal 100 W Upgrade
6. Standard 2.7 kHz 5 pole filter in Main and Sub
7. KFL3A-250 250 Hz, 8-pole in Main
8. KFL3A-400 400HZ 8-POLE in Main
9. INRAD 700 Hz 8-POLE in Main
10. MH-4 Hand Mike

Been back to Elecraft a couple of times, all the available updates have been done and most recently in fall of 2019, the latest LPA board was installed,
Gold Pins;   6 pins for 12V, KPA3 to KPAIO3 Riser, and Front Panel, P30 and P35

Includes: DC cable to power strip (powerpole connectors)
Original Box - Elecraft K3S & P3 by Fred Cady (Design, Configuration, and Operation) book and the original manual.

Asking $2,400 (OBO), shipped from NE Wisconsin. Paypal or USPS M.O.

73 Dwight NS9I






Re: KPA3 output erratic

Ray Maxfield
 

Hi Chuck..

I just seen your post…

Sorry if I repeat……..

It sounds like the SWR circuit is trying to Shut down the Output.

Inspect Everything on the Output of the Finals to the SO-239 Connector.

Change the Cable to your 50 Ohm Load.  

Ray WA6VAB  K3

 

From: Chuck Miller
Sent: Friday, August 7, 2020 12:00 PM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] KPA3 output erratic

 

Mike;
I had already done the gold pin replacement. The instructions said if the pins were hot and discolored to change the edge connector too. The short set of pins (the pins on the KPA3 were discolored, so I changed that edge connector. The pins on the main RF board weren't discolored, so I didn't change the longer edge connector. I thought maybe I should have, so this morning I changed the long edge connector, reassembled and checked it again. No difference.
I noticed if I set the power to about 35 watts, after a few seconds the power comes up, but oscilates a bit. I guess it's time to send Elecraft another email.

Thanks, Chuck
N0NC

 


Re: KPA3 output erratic

Chuck Miller
 

Mike;
I had already done the gold pin replacement. The instructions said if the pins were hot and discolored to change the edge connector too. The short set of pins (the pins on the KPA3 were discolored, so I changed that edge connector. The pins on the main RF board weren't discolored, so I didn't change the longer edge connector. I thought maybe I should have, so this morning I changed the long edge connector, reassembled and checked it again. No difference.
I noticed if I set the power to about 35 watts, after a few seconds the power comes up, but oscilates a bit. I guess it's time to send Elecraft another email.

Thanks, Chuck
N0NC


Saturday & Sunday, all day: Live demos of Elecraft products at QSO Today Ham Expo

 

Hi all,

As you may know, Elecraft is a gold sponsor of the QSO Today Ham Expo this weekend. We'd love to have you drop by our booth.

In addition to new video content, we'll have our product specialists and designers available, running live demos all day both Saturday and Sunday. We'll be taking questions in real time, providing operating tips, discussing design details, etc. 

To sign up for any of the demos, just click on Booth/Demo Schedule when you visit our booth.  

Not registered for the Expo yet?  Registration is free; just visit the Expo Website.

73,
Wayne
N6KR


-----

Elecraft...Full-Contact Ham Radio

QSO Today Ham Expo gold sponsor; August 8-9, 2020   





Re: Computer will not speak to K3

Drew Vonada-Smith K3PA
 

Start by unplugging the adapter while watching Device Manager.  The COM device that dissapears and reappears is the correct device, with its COM port noted.  Make sure no other software is open and using that port.

If still no luck, consider trying another USB to serial adapter in case that one was damaged.  

73,

Drew K3PA


Re: Computer will not speak to K3

KX2A
 

Dave,

I am running Windows 10 Pro.  The latest Windows Update was a Quality Update, 7/24/2020.  The latest Driver Update was 4/16/2020.  The latest Definition Updates 7/24/2020 to 8/6/2020.  I believe that the Definition Updates were occurring at the time that the failure became known.  Google indicates that Definition Updates are related to Windows Defender.  I am using AVG anti-virus, but Windows Defender still appears to be running as a firewall.  I do not see how this would cause my problem, but I am open to suggestions.

Thanks,
Jan, KX2A


Re: KPA3 output erratic

James Kvochick
 

Chuck;

Assuming you have already attempted to remove and reseat all of the connectors without any changes, and assuming you still can't get the KPA3 to pass the TX gain calibration, you may win a chat with Elecraft support about a PA swap.

73

Jim K8JK


Re: KPA3 output erratic

mikerodgerske5gbc
 

I'm rusty on this, is this possibly gold pin syndrome?

73
Mike R

7!
Absolutely Awesome 

2341 - 2360 of 35531