Date   

Re: [Elecraft_K3] K3 output power erratic

Charles Garner
 

Thanks for that but I mentioned I'd already done that. Multiple times. I just drove to Elecraft and dropped off the rig. One convenience living in the Bay Area is having the Elecraft expertise just over the hill from me. Cheaper and faster to drive it over in the Honda than to mail it!  I will advise the group regarding what they find. A couple weeks to play with the HT-37 and Viking Ranger, a roughly 60 year step back in technology. Fun simple tube stuff. 
72 N6AF Chuck

On Jan 10, 2018, at 8:07 AM, Bob McGraw K4TAX RMcGraw@... [Elecraft_K3] <Elecraft_K3@...> wrote:

 

Since you have a good dummy load and a clean test setup, I'd suggest you run the Calibrate Transmitter Gain as found with the Elecraft Utility.    

73

Bob, K4TAX


On 1/10/2018 8:35 AM, Charles Garner skyviewcharles@... [Elecraft_K3] wrote:
 

About a year ago I sent my K3 to Elecraft due to the output power behaving erratically on AM operation. Now it started acting up once again. This time on bands higher than 14 MHz the output power can take several seconds to ramp up to 100 Watts output. I'm referring to already having the output power control set for 100 Watts and then pressing the XMT button or setting to FM mode and keying the mic; in other words simply commanding the K3 to put out a 100 Watt carrier. Sometimes on 29 MHz it's particularly bad and will sit at about 50 Watts for 15 seconds and then slowly creep up to 100. Sometimes it initially continues past 100 and stops around 115 Watts and then settles back to 100.
Thor original repair replaced the driver and final FETs within the LPA and also changed to new gold faceplate connector pins.
So I opened it up and found that Q3 on the LPA was blown "open". Q3 is the bias control switch, an SMT bipolar transistor. I honed my SMT skills and I replaced Q3. I also replaced the LPA's driver and final FETs; in other words the 3 primary FETs in the LPA. I tried FW versions 5.60 and 5.50. I reseated the faceplate connections. I ran the transmit gain alignment and it fails usually on the 29 MHz cycle. The error message states "power cannot settle". One hint is I checked the transmitter gains and all look reasonable except 29 MHz which shows a gain of 115 for the HPA. Another hint on 29 MHz is the HI CURRENT warning shows occasionally.
Since the HPA does output 100 W I conclude it's not the issue. I also conclude that the LPA is OK especially since I just changed all of its FETs. So what else is there to cause a slow ramp up in power? Keep in mind this problem is only seen at frequency bands higher than 14 MHz albeit perhaps it's just slightly doing it on 14 MHz. The rig operates apparently perfectly from 10 MHz on down to 1.8 MHz.

Has anyone seen this erratic power behavior and if so what was the root cause? Thanks in advance.

Problem in low pass filter sections? Spurious output? Bad connection from output board to antenna connector on back panel?

All the testing is being done into a known good 50 Ohm dummy load. The test setup is clean.

73 N6AF Frustrated Chuck



Re: [Elecraft_K3] K3 output power erratic

Wes
 

He said he ran it. 


On Jan 10, 2018, at 9:07 AM, Bob McGraw K4TAX RMcGraw@... [Elecraft_K3] <Elecraft_K3@...> wrote:

 

Since you have a good dummy load and a clean test setup, I'd suggest you run the Calibrate Transmitter Gain as found with the Elecraft Utility.    

73

Bob, K4TAX


On 1/10/2018 8:35 AM, Charles Garner skyviewcharles@... [Elecraft_K3] wrote:
 

About a year ago I sent my K3 to Elecraft due to the output power behaving erratically on AM operation. Now it started acting up once again. This time on bands higher than 14 MHz the output power can take several seconds to ramp up to 100 Watts output. I'm referring to already having the output power control set for 100 Watts and then pressing the XMT button or setting to FM mode and keying the mic; in other words simply commanding the K3 to put out a 100 Watt carrier. Sometimes on 29 MHz it's particularly bad and will sit at about 50 Watts for 15 seconds and then slowly creep up to 100. Sometimes it initially continues past 100 and stops around 115 Watts and then settles back to 100.
Thor original repair replaced the driver and final FETs within the LPA and also changed to new gold faceplate connector pins.
So I opened it up and found that Q3 on the LPA was blown "open". Q3 is the bias control switch, an SMT bipolar transistor. I honed my SMT skills and I replaced Q3. I also replaced the LPA's driver and final FETs; in other words the 3 primary FETs in the LPA. I tried FW versions 5.60 and 5.50. I reseated the faceplate connections. I ran the transmit gain alignment and it fails usually on the 29 MHz cycle. The error message states "power cannot settle". One hint is I checked the transmitter gains and all look reasonable except 29 MHz which shows a gain of 115 for the HPA. Another hint on 29 MHz is the HI CURRENT warning shows occasionally.
Since the HPA does output 100 W I conclude it's not the issue. I also conclude that the LPA is OK especially since I just changed all of its FETs. So what else is there to cause a slow ramp up in power? Keep in mind this problem is only seen at frequency bands higher than 14 MHz albeit perhaps it's just slightly doing it on 14 MHz. The rig operates apparently perfectly from 10 MHz on down to 1.8 MHz.

Has anyone seen this erratic power behavior and if so what was the root cause? Thanks in advance.

Problem in low pass filter sections? Spurious output? Bad connection from output board to antenna connector on back panel?

All the testing is being done into a known good 50 Ohm dummy load. The test setup is clean.

73 N6AF Frustrated Chuck



K3 REF TCXO calibration

farrerfolks@...
 

Which of the three methods in the manual is preferred?


Mel, K6KBE


TCXO Calibration methods

farrerfolks@...
 

Hello All,


I have found that the frequency display and my transmitted signal is off by ~80-100 Hz.  Which of the three methods is the best?    


Mel, K6KBE


K3 will Tune into an antenna but no Power on SSB or CW

Richard Jones
 

I have been trying to help get a SK's K3 radio operational where it was found that there is no O/P power showing on the display in SSB or CW modes on any band.

My initial review I noted that the Filters were installed in the wrong order so I switched them around and updated the Configs for each...Still no power on Key down or SSB.... however that did allow the radio to show 5W on the display when I hit the ATU Tune button.... but the tuner doesn't resolve a tuning solution even into a resonate dipole

Next I noticed that there was no relay click when adjusting the POWER knob through the 10W threshold..

In a bold step I decided to match the CONFIG menu choices to my own radio..  made some section changes and now the radio offers that click as you move through the 10W threas-hold.

Still no power showing in either SSB or CW modes. Note that the Radio does illuminate the TX LED and still tunes with 5W showing on the display... but no tuning solution.

Has anyone experienced this previously or have any test-function ideas for me to try?

The Radio is a 4000ish serial number, built at the factory, did operate a one time or another with five 8-pole filters and 100W PA, DVR and ATU installed.. no second receiver.

Thanks for any help..

Richard // N2GBR



Re: [Elecraft_K3] K3 output power erratic

Dave (NK7Z)
 

My K3 creeps up in power as well, and sometimes on 28 it cuts out... I
will be most interested in this thread...


73s and thanks,
Dave
NK7Z
http://www.nk7z.net


On 01/10/2018 06:35 AM, Charles Garner skyviewcharles@...
[Elecraft_K3] wrote:
About a year ago I sent my K3 to Elecraft due to the output power
behaving erratically on AM operation. Now it started acting up once
again. This time on bands higher than 14 MHz the output power can take
several seconds to ramp up to 100 Watts output. I'm referring to already
having the output power control set for 100 Watts and then pressing the
XMT button or setting to FM mode and keying the mic; in other words
simply commanding the K3 to put out a 100 Watt carrier. Sometimes on 29
MHz it's particularly bad and will sit at about 50 Watts for 15 seconds
and then slowly creep up to 100. Sometimes it initially continues past
100 and stops around 115 Watts and then settles back to 100.
Thor original repair replaced the driver and final FETs within the LPA
and also changed to new gold faceplate connector pins.
So I opened it up and found that Q3 on the LPA was blown "open". Q3 is
the bias control switch, an SMT bipolar transistor. I honed my SMT
skills and I replaced Q3. I also replaced the LPA's driver and final
FETs; in other words the 3 primary FETs in the LPA. I tried FW versions
5.60 and 5.50. I reseated the faceplate connections. I ran the transmit
gain alignment and it fails usually on the 29 MHz cycle. The error
message states "power cannot settle". One hint is I checked the
transmitter gains and all look reasonable except 29 MHz which shows a
gain of 115 for the HPA. Another hint on 29 MHz is the HI CURRENT
warning shows occasionally.
Since the HPA does output 100 W I conclude it's not the issue. I also
conclude that the LPA is OK especially since I just changed all of its
FETs. So what else is there to cause a slow ramp up in power? Keep in
mind this problem is only seen at frequency bands higher than 14 MHz
albeit perhaps it's just slightly doing it on 14 MHz. The rig operates
apparently perfectly from 10 MHz on down to 1.8 MHz.

Has anyone seen this erratic power behavior and if so what was the root
cause? Thanks in advance.

Problem in low pass filter sections? Spurious output? Bad connection
from output board to antenna connector on back panel?

All the testing is being done into a known good 50 Ohm dummy load. The
test setup is clean.

73 N6AF Frustrated Chuck


Re: [Elecraft_K3] K3 output power erratic

Bob McGraw - K4TAX
 

Since you have a good dummy load and a clean test setup, I'd suggest you run the Calibrate Transmitter Gain as found with the Elecraft Utility.    

73

Bob, K4TAX


On 1/10/2018 8:35 AM, Charles Garner skyviewcharles@... [Elecraft_K3] wrote:

 

About a year ago I sent my K3 to Elecraft due to the output power behaving erratically on AM operation. Now it started acting up once again. This time on bands higher than 14 MHz the output power can take several seconds to ramp up to 100 Watts output. I'm referring to already having the output power control set for 100 Watts and then pressing the XMT button or setting to FM mode and keying the mic; in other words simply commanding the K3 to put out a 100 Watt carrier. Sometimes on 29 MHz it's particularly bad and will sit at about 50 Watts for 15 seconds and then slowly creep up to 100. Sometimes it initially continues past 100 and stops around 115 Watts and then settles back to 100.
Thor original repair replaced the driver and final FETs within the LPA and also changed to new gold faceplate connector pins.
So I opened it up and found that Q3 on the LPA was blown "open". Q3 is the bias control switch, an SMT bipolar transistor. I honed my SMT skills and I replaced Q3. I also replaced the LPA's driver and final FETs; in other words the 3 primary FETs in the LPA. I tried FW versions 5.60 and 5.50. I reseated the faceplate connections. I ran the transmit gain alignment and it fails usually on the 29 MHz cycle. The error message states "power cannot settle". One hint is I checked the transmitter gains and all look reasonable except 29 MHz which shows a gain of 115 for the HPA. Another hint on 29 MHz is the HI CURRENT warning shows occasionally.
Since the HPA does output 100 W I conclude it's not the issue. I also conclude that the LPA is OK especially since I just changed all of its FETs. So what else is there to cause a slow ramp up in power? Keep in mind this problem is only seen at frequency bands higher than 14 MHz albeit perhaps it's just slightly doing it on 14 MHz. The rig operates apparently perfectly from 10 MHz on down to 1.8 MHz.

Has anyone seen this erratic power behavior and if so what was the root cause? Thanks in advance.

Problem in low pass filter sections? Spurious output? Bad connection from output board to antenna connector on back panel?

All the testing is being done into a known good 50 Ohm dummy load. The test setup is clean.

73 N6AF Frustrated Chuck



K3 output power erratic

Charles Garner
 

About a year ago I sent my K3 to Elecraft due to the output power behaving erratically on AM operation. Now it started acting up once again. This time on bands higher than 14 MHz the output power can take several seconds to ramp up to 100 Watts output. I'm referring to already having the output power control set for 100 Watts and then pressing the XMT button or setting to FM mode and keying the mic; in other words simply commanding the K3 to put out a 100 Watt carrier. Sometimes on 29 MHz it's particularly bad and will sit at about 50 Watts for 15 seconds and then slowly creep up to 100. Sometimes it initially continues past 100 and stops around 115 Watts and then settles back to 100.
Thor original repair replaced the driver and final FETs within the LPA and also changed to new gold faceplate connector pins.
So I opened it up and found that Q3 on the LPA was blown "open". Q3 is the bias control switch, an SMT bipolar transistor. I honed my SMT skills and I replaced Q3. I also replaced the LPA's driver and final FETs; in other words the 3 primary FETs in the LPA. I tried FW versions 5.60 and 5.50. I reseated the faceplate connections. I ran the transmit gain alignment and it fails usually on the 29 MHz cycle. The error message states "power cannot settle". One hint is I checked the transmitter gains and all look reasonable except 29 MHz which shows a gain of 115 for the HPA. Another hint on 29 MHz is the HI CURRENT warning shows occasionally.
Since the HPA does output 100 W I conclude it's not the issue. I also conclude that the LPA is OK especially since I just changed all of its FETs. So what else is there to cause a slow ramp up in power? Keep in mind this problem is only seen at frequency bands higher than 14 MHz albeit perhaps it's just slightly doing it on 14 MHz. The rig operates apparently perfectly from 10 MHz on down to 1.8 MHz.

Has anyone seen this erratic power behavior and if so what was the root cause? Thanks in advance.

Problem in low pass filter sections? Spurious output? Bad connection from output board to antenna connector on back panel?

All the testing is being done into a known good 50 Ohm dummy load. The test setup is clean.

73 N6AF Frustrated Chuck


K3S and RTTY (FSK D)

marsh308 <marsh308@...>
 

My K3S and running MMTTY, or WriteLog, RttyRite, and mtty.ocx, will no longer transmit RTTY (FSK D).

CW, SSB, and FT8 (DATA A) all still work okay. MMTTY, and WriteLog, RttyRite, and mtty.ocx worked okay before I tried to operate in the ARRL RTTY Roundup this weekend. What has changed from previously when it all worked is: Windows 10 updates, and the installation of NTP and WSJT-X.
I have reinstalled WriteLog (latest version), MMTTY 1.70, and the drivers for my hardware COM ports. Then I set up MMTTY again page by page from AA5AU 's website. Still no joy.

For ASK D I'm using the interface shown on page 99 of Fred Cady's K3S book - real COM port to K3S ACC for PTT and FSK in. It worked fine before, but not now.

Any suggestions sure would be appreciated.

73,
Marsh, KA5M







Sent from my Galaxy Tab A


Re: Elecraft K3 relay contact sound

yo7mgg@...
 

Tnx for help. I try that, i made the calibration again and this symptoms are only when the temperature i low than 20 degree C...I already made the calibration for PA temp and FP temp...

73, Stefan YO7SR


Re: Elecraft K3 relay contact sound

Richard Hubbard
 

 Try to re-seat the PA unit then reload your configuration file, then rerun the PA gain settings (5 and 50w). If you still have problems, I would advise contacting Elecraft customer support. 

Best regards,

Richard Hubbard
Tel: +44 (0)1380 723853
Mob +44 (0)7500019709
Email: richhubbard_uk@...




Elecraft K3 relay contact sound

yo7mgg@...
 

Hello,

I have an Elecraft K3 with serial 6134. When i turn the VFO A knob to change frequency i hear an relay contact and my display have a flash. It happens in all bands and i hear this relay contact very often. Also today i try to work in split but i can`t because when i try to modify the frequency wtih VFO B knob i hear again the relay contact and my frequency jump to other frequency. Also the same thing happens in split when i try to modify the frequency in VFO A. I try to made a reset with shift/lo and Power switch but has no effect. Also i made i the calibration procedures for PA and temp and all that is write in the owner`s manual. This is happen after i install the KPA3A 100W final. Also i made a test and when i have 23 degree C in my room this is not so often bu if the temp. is smaller than 20 degree C i have this problem very often and i can`t work with my K3

Please give me a solution.

73, Stefan YO7SR



K3 MACRO Help. Lower SUB Rx Volume during CW keying.

Mark Mark
 

If anyone already has a Macro for the following, I'd be delighted to try it out here.  Thank you.
~~ 
Requirement:  Lower volume (or possibly mute) the SUB receiver, being used in split operation on CW QSK, but only while the K3 is actually sending keying, in QSK mode.  This Macro function would, in effect, mirror the intermittent manual adjustment of the AF balance control to lower the SUB Rx volume but only during CW QSK keying.   

In sum, the intent of the above would be to better hear the weak DX'pedition station on Rx Main as that station replies to the many calling stations in the pileup (most often very strong and continuous calling) heard on the split frequency SUB Rx.  Then, when the K3 is not keying, the SUB Rx volume would be returned to its preset level.  The K3's full QSK function would not be interrupted (on Rx Main).

There's much more regarding the why's and wherefores of this scenario; the above is a summary. Feel free to reply direct to w2or (at) arrl (dot) net or the listserve.
//Mark w2or.


New release of Win4K3Suite is available

tomb18@...
 

Hello,

There is a new release of Win4K3Suite which now offers support for the SDRPlay RSP1A for use as a panadapter on the K3, KX3 and KX2. This release also offers a few enhancements in display performance as well as ClubLog spot aging.

Win4K3Suite is the ultimate control program for your K3S, KX3 and KX2 supporting all options as well as the KPA500, KPA1500 and KAT500 on all radios. It supports the P3, and allows the use of the SDRPlay as well as LPPAN as a panadapter.

Win4K3Suite includes virtual port technology allowing sharing of up to 6 software programs or hardware devices with no conflicts.

You can see some videos on Win4K3Suite here:

https://www.youtube.com/results?search_query=win4k3suite


and some reviews here: http://www.eham.net/reviews/detail/11214


There is a ffree 30 day trial available at va2fsq.com

73 Tom


P.S. I would be interested to hear from the KPA1500 users that are using the software.



ARRL RTTY RU- Using Elecraft KX3/KX2/K3 KY Codes to Allow N1MM & RTTY-FSK

Anthony Luscre
 

https://docs.google.com/document/d/1MmbunWHvwAkSVOHNkOxCIgEPLKI1K2FaBFWbTzLtq3E

--
Anthony Luscre

K8ZT
Assistant Ohio Section Manager for Education Outreach
ARRL - The National Association For Amateur Radio™
 
a@... (best for Education & Technology)
k8zt@... (best for Amateur Radio)

The Web Resource Hoarder- www.ZTLearn.com
Web Resource Hoarder Blog

K8ZT Radio Website- www.k8zt.com
My Radio Blog- k8zt.blogspot.com


PX3 digital decode

g4abx
 

Good evening all.

Apologies if this is not the right place to ask the question, or if its already been covered?


I've just obtained a new PX3.

its a nice piece of kit. However, it doesn't seem to decode PSK, RTTY, or CW Text as well as the KX3 to which it is connected.


Why is this?


It also seems that there is no AFC feature to enable either the KX3 or the PX3 to follow a drifting signal whereas my using a PC application (via a sound card) have no such problems.


Can anyone advise if I'm missing something in a nested menu?


Many thanks

73

Bruce G4ABX


K3 For Sale

Ned Mountain WC4X
 

My K3 S/N 0047 is for sale.  All current updates have been done and factory checked out (6/17) to meet all specs. Currently my back up rig.  Includes upgraded synthesizer and ATU.  $1500.00

Contact off list if interested.

WC4X
wc4x@...


Re: N1MM+

g0ifl
 

SORTED!

The lead between the radio was a commercial lead which needed rewiring.

Tnxs for input.


Re: [Elecraft_K3] winkeyer anomoly

Bob Darlington <rdarlington@...>
 

Try plugging into the "key" jack.   

On Tue, Jan 2, 2018 at 5:30 AM, g0ifl@... [Elecraft_K3] <Elecraft_K3@...> wrote:
 

Hi,

I made up the WinkeyerUSB kit and all seems to be working ok ...except...when it keys the K3 I just get a single tone. I am now stumped! Any guidance gratefully accepted.



Re: [Elecraft_K3] Re: N1MM+

barry NF1O
 

you need to plug the winkey into the straight key jack, not the paddle input. I use winkey and have a separate paddle in the paddle input with a slow speed. My XYL likes the keyer to be slow vs whatever the winkey is set for.

Barry

NF1O




From: Elecraft_K3@... on behalf of Rob Finch g0ifl@... [Elecraft_K3]
Sent: Tuesday, January 2, 2018 9:32 AM
To: Elecraft_K3@...
Subject: [Elecraft_K3] Re: N1MM+
 
 

Update...
So I bought the K1EL Winkeyer kit. It seems to be working OK but keying the radio is a little weird!
The audio output from the Winkeyer speaker is what I expect.....just not from the radio.

Config...K3>Winkeyer plugged into the PADDLE socket>external key attached to Winkeyer

eg,
I send a msg from the Winkeyer3Demo (WK3D) and the radio sends a garbled load of dashes (no dits)
I tap any paddle on the my key and I get just dashes (no dits)

If I enable "Enable PTT" in the WK3D and select a msg in the demo  program, I get di-dah-di-dah-di-dah etc
If I tap the right paddle on the key I get "R" and the left "L"

According to the Winkeyer TS hints..
3) I get dits or dahs only or the CW output is garbled. This usually happens when you have not disabled your transceiver’s internal keyer. You want to enable straight key mode. In most transceivers this function is controlled by menu selection, check your user manual


So....is this necessary?
If so, how do I turn the internal keyer of the K3 off, as I can't find any setting for this.......or have I something simple obviously set wrong?

Note...sending any stored msg directly from the radio works fine.

Any help gratefully received.


rgds Rob HB9ETR / G0IFL


On ‎Wednesday‎, ‎15‎ ‎November‎ ‎2017‎ ‎18‎:‎15‎:‎24‎ ‎CET, Rob Finch wrote:


Tnxs for the feedback, much appreciated.
I was advised to change the standard .mc file and use the KY codes. 
This seems to resolve the problem but, as from another response from Tom (Mr Win4K3Suite), highlighted a few other issues.
1. the output from the Function keys is sometimes erratic....ie, it don't!
2. the CW adjust in N1MM has no effect on the radio
3. I seem limited to the length of the transmitted message
eg   
F6 EX2,{CAT1ASC KY ! {EXCH}-{EXCH} *<04>;}   works as long as the inputted callsign is no longer than 6 characters (/P made it not work)
4.. some coding had no effect at all
eg
F6 EXCH2,{CATA1ASC KY <<<5NN>>> {EXCH} {EXCH};}   the <<<>>> has no effect


of course this is reliant on my very limited understanding of the KY codes and their make up.

Tom advises me that issue with the keying....and hence the need to use the KY codes....and that some interface is probably the best option.

It was all a little starange as I never had this issue before....until I started to use Win4K3Suite...something that I intend to continue to use...so I guess I need the interface..

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