Date   

Re: [Elecraft_K3] K3S - KTC03-1 Frequency Stability

Jim - N4ST
 

Rob,


Thanks for your input.
Yes, I have been thinking about a GPSDO and the External Reference board.
I don't align my rig based on the other guys transmit frequency, but I do adjust my transmit frequency to match his.
That is the semi-frustrating thing. The vast majority of the stations will be within 10-15 Hz of each other on 6-meters, with just an occasional outlier.
They are managing to stay on frequency just fine. Then again, maybe they are doing the same thing as me. 😉


Off Topic
Microsoft's grammar checker wants me to change "adjust my transmit frequency" to "adjust me transmit frequency", and it's not even talk like a pirate day.
________
73,
Jim - N4ST


From: Elecraft_K3@yahoogroups.com [mailto:Elecraft_K3@yahoogroups.com]
Sent: Thursday, June 15, 2017 12:20
To: Elecraft_K3@yahoogroups.com

Subject: Re: [Elecraft_K3] K3S - KTC03-1 Frequency Stability



If I was using a mode that requires high frequency accuracy and stability, two issues come to mind. I would want a house frequency standard on my end, and whatever K3 option is required to lock the radio to that standard. Surplus GPSDO and Rubidium standards are available in the $150 range. The other question is what is being used on the other end? Can you assume the other guy you are trying to work is on frequency?


I have been running a Efratom Rubidium standard 24x7 for over 15 years and it is still within a few parts in 10 to the 10th compared to my GPSDO. I don't run my two other Efratom Rubidium oscillators all the time (2 QTHs or I wouldn't have so many), and they come up within the same level of accuracy within 10 minutes after turn-on.


Most of this type of surplus equipment comes out of cell phone sites, and would at least eliminate having to fiddle with frequency accuracy on your end.


Rob, NC0B

On Jun 14, 2017, at 3:17 PM, 'Jim - N4ST' mailto:newsgroup@jimpricejr.com [Elecraft_K3] <mailto:Elecraft_K3@yahoogroups.com> wrote:

Thanks Wayne, but I’ve had this K3S for over a year and a half and never noticed the problem until I started working 6M MSK144.
I couldn’t understand why I could hear the meteor scatter pings, but wouldn’t decode. The max freq tolerance for MSK144 is 200 Hz.
When I figured out I was off frequency, I did a REF CAL adjustment and was dead on.
Then I noticed that from day-to-day I could be 50Hz-70Hz off, even for a warmed up rig.
I went through setting the REF CAL several different times, using different techniques and all seemed to work, but within a few days I would be off frequency again, by 50 Hz or so.
Now I just monitor for a few MSK144 pings and see where the majority are transmitting and offset my TX frequency by the appropriate amount and I’m good to go.

Especially easy now during e-skip when the signals are readily available.



__________
73,
Jim – N4ST


From: mailto:Elecraft_K3@yahoogroups.com [mailto:Elecraft_K3@yahoogroups.com]
Sent: Wednesday, June 14, 2017 10:43
To: mailto:Elecraft_K3@yahoogroups.com
Subject: Re: [Elecraft_K3] K3S - KTC03-1 Frequency Stability


If that is true, we’ll replace it immediately. Please contact customer support.


73,
Wayne
N6KR


On Jun 13, 2017, at 9:10 PM, 'Jim - N4ST' mailto:newsgroup@jimpricejr.com [Elecraft_K3] <mailto:Elecraft_K3@yahoogroups.com> wrote:

Nope.
I guess I paid $119 for a 1ppm oscillator upgrade that doesn't have "typical" (0.5ppm) performance.

_________
73,
Jim - N4ST

From: mailto:Elecraft_K3@yahoogroups.com [mailto:Elecraft_K3@yahoogroups.com]
Sent: Tuesday, June 13, 2017 12:34
To: mailto:Elecraft_K3@yahoogroups.com
Subject: [Elecraft_K3] Re: K3S - KTC03-1 Frequency Stability

Hi Jim,

Have you learned anything more on this issue?

Thanks
Mike
K7PI

________________________________________
Posted by: Wayne Burdick <mailto:n6kr@elecraft.com>
________________________________________


Re: [Elecraft_K3] K3S - KTC03-1 Frequency Stability

Rob Sherwood
 

If I was using a mode that requires high frequency accuracy and stability, two issues come to mind. I would want a house frequency standard on my end, and whatever K3 option is required to lock the radio to that standard.  Surplus GPSDO and Rubidium standards are available in the $150 range. The other question is what is being used on the other end?  Can you assume the other guy you are trying to work is on frequency?  

I have been running a Efratom Rubidium standard 24x7 for over 15 years and it is still within a few parts in 10 to the 10th compared to my GPSDO.  I don't run my two other Efratom Rubidium oscillators all the time (2 QTHs or I wouldn't have so many), and they come up within the same level of accuracy within 10 minutes after turn-on. 

Most of this type of surplus equipment comes out of cell phone sites, and would at least eliminate having to fiddle with frequency accuracy on your end. 

Rob, NC0B


On Jun 14, 2017, at 3:17 PM, 'Jim - N4ST' newsgroup@... [Elecraft_K3] <Elecraft_K3@...> wrote:

 

Thanks Wayne, but I’ve had this K3S for over a year and a half and never noticed the problem until I started working 6M MSK144.
I couldn’t understand why I could hear the meteor scatter pings, but wouldn’t decode. The max freq tolerance for MSK144 is 200 Hz.
When I figured out I was off frequency, I did a REF CAL adjustment and was dead on.
Then I noticed that from day-to-day I could be 50Hz-70Hz off, even for a warmed up rig.
I went through setting the REF CAL several different times, using different techniques and all seemed to work, but within a few days I would be off frequency again, by 50 Hz or so.
Now I just monitor for a few MSK144 pings and see where the majority are transmitting and offset my TX frequency by the appropriate amount and I’m good to go.
Especially easy now during e-skip when the signals are readily available.

__________
73,
Jim – N4ST

From: Elecraft_K3@... [mailto:Elecraft_K3@...]
Sent: Wednesday, June 14, 2017 10:43
To: Elecraft_K3@...
Subject: Re: [Elecraft_K3] K3S - KTC03-1 Frequency Stability

If that is true, we’ll replace it immediately. Please contact customer support.

73,
Wayne
N6KR

> On Jun 13, 2017, at 9:10 PM, 'Jim - N4ST' newsgroup@... [Elecraft_K3] <Elecraft_K3@...> wrote:
>
> Nope.
> I guess I paid $119 for a 1ppm oscillator upgrade that doesn't have "typical" (0.5ppm) performance.
>
> _________
> 73,
> Jim - N4ST
>
> From: Elecraft_K3@... [mailto:Elecraft_K3@...]
> Sent: Tuesday, June 13, 2017 12:34
> To: Elecraft_K3@...
> Subject: [Elecraft_K3] Re: K3S - KTC03-1 Frequency Stability
>
> Hi Jim,
>
> Have you learned anything more on this issue?
>
> Thanks
> Mike
> K7PI

________________________________________
Posted by: Wayne Burdick <n6kr@...>
________________________________________



If this email is spam, report it to www.OnlyMyEmail.com


K3/0-mini dynamic vs. electret setup

Scott Townley
 

For the life of me, I cannot decipher how the mic inputs on the K3/0-mini are supposed to work/be configured/etc.


Thanks to help from this list, I finally figured out that when using the RRC-pair, that there is a jumper inside the remote RRC unit that determines bias and delivers that to (at least) the 8-pin mic connector.


But these questions seem unresolved:
1. What is the status of the 3.5mm jack on the side panel? Is it simply in parallel with the 8-pin, so that if the 8-pin has bias, the 3.5mm jack does as well?
2. How about USB-based remote operation? How does one determine, and more importantly, change mic bias for the K3/0-mini? And does it matter if you're using the 8-pin or the 3.5mm jack?


Thanks in Advance,
Scott NX7U 



Re: [Elecraft_K3] Digikeyer II and Router S/W; WSJT-X; K3 Setup - Help

Joe Subich, W4TV
 

The devices shown are the same devices that are present in the
Windows Sound Control Panel "Recording Devices" and "Playback
Devices" tabs.

73,

... Joe, W4TV

On 6/15/2017 7:17 AM, fdavis@nfld.net [Elecraft_K3] wrote:
Is anyone out there specifically using WSJT-X and the Digikeyer II?
If so - can you send me a screen shot of the SETTINGS page AUDIO tab. I'd like to see what sound devices are populated in the INPUT and OUTPUT drop down boxes under this tab. Let me see INPUT and OUTPUT opened so that the sound card selection list is visible.
Thanks
Frank VO1HP


Re: [Elecraft_K3] Digikeyer II and Router S/W; WSJT-X; K3 Setup - Help

Frank Davis
 

Is anyone out there specifically using WSJT-X and the Digikeyer II? 

If so -  can you send me a screen shot of the SETTINGS page AUDIO tab.  I'd like to see what sound devices are  populated in the INPUT and OUTPUT drop down boxes under this tab.   Let me see INPUT and OUTPUT opened so that the sound card selection list is visible.

Thanks

Frank VO1HP


Re: [Elecraft_K3] K3S - KTC03-1 Frequency Stability

 

Hi Jim,

Typically the 1 ppm TCXO is +/- 0.5 ppm after warmup, which would be +/- 25 Hz (approx) on 6 meters. So you very well may have a substandard unit. If you decide you’d like to replace it, let us know.

73,
Wayne
N6KR

On Jun 14, 2017, at 10:11 AM, 'Jim - N4ST' newsgroup@jimpricejr.com [Elecraft_K3] <Elecraft_K3@yahoogroups.com> wrote:

Thanks Wayne, but I’ve had this K3S for over a year and a half and never noticed the problem until I started working 6M MSK144.
I couldn’t understand why I could hear the meteor scatter pings, but wouldn’t decode. The max freq tolerance for MSK144 is 200 Hz.
When I figured out I was off frequency, I did a REF CAL adjustment and was dead on.
Then I noticed that from day-to-day I could be 50Hz-70Hz off, even for a warmed up rig.
I went through setting the REF CAL several different times, using different techniques and all seemed to work, but within a few days I would be off frequency again, by 50 Hz or so.
Now I just monitor for a few MSK144 pings and see where the majority are transmitting and offset my TX frequency by the appropriate amount and I’m good to go.
Especially easy now during e-skip when the signals are readily available.

__________
73,
Jim – N4ST

From: Elecraft_K3@yahoogroups.com [mailto:Elecraft_K3@yahoogroups.com]
Sent: Wednesday, June 14, 2017 10:43
To: Elecraft_K3@yahoogroups.com
Subject: Re: [Elecraft_K3] K3S - KTC03-1 Frequency Stability

If that is true, we’ll replace it immediately. Please contact customer support.

73,
Wayne
N6KR

On Jun 13, 2017, at 9:10 PM, 'Jim - N4ST' newsgroup@jimpricejr.com [Elecraft_K3] <Elecraft_K3@yahoogroups.com> wrote:

Nope.
I guess I paid $119 for a 1ppm oscillator upgrade that doesn't have "typical" (0.5ppm) performance.

_________
73,
Jim - N4ST

From: Elecraft_K3@yahoogroups.com [mailto:Elecraft_K3@yahoogroups.com]
Sent: Tuesday, June 13, 2017 12:34
To: Elecraft_K3@yahoogroups.com
Subject: [Elecraft_K3] Re: K3S - KTC03-1 Frequency Stability

Hi Jim,

Have you learned anything more on this issue?

Thanks
Mike
K7PI
________________________________________
Posted by: Wayne Burdick <n6kr@elecraft.com>
________________________________________



Re: [Elecraft_K3] Digikeyer II and Router S/W; WSJT-X; K3 Setup - Help

Joe Subich, W4TV
 

Don't use USB ... that leaves compression and TX EQ engaged on
transmit. Use DATA_A for PSK31/JT65/JT9/etc. and AFSK_A for
RTTY (FSK). Those modes eliminate compression and EQ on transmit
and EQ/NR on receive - all of which cause distortions of one kind
or another that degrades digital modes.

73,

... Joe, W4TV

On 6/14/2017 8:34 AM, Kenneth Ascher kascher904@gmail.com [Elecraft_K3] wrote:
I have that setup and it works great. I use USB mode.
Ken, KK4VA
On Wed, Jun 14, 2017 at 7:20 AM, fdavis@nfld.net [Elecraft_K3] <
Elecraft_K3@yahoogroups.com> wrote:



Joe

....I tried changing to PSK D in DATA MD on the K3 there was output when
TUNE button pressed in WSJT-X. Also output when ENABLE TX was engaged and
rig keyed in auto mode by the software.
So there was something happened that was correct. however when using DATA
A for JT65 there is no output so something not set right in the K3 maybe?

...settings in the PC and the DKII Router S/W same for both PSK D and
DATA A.

Helping setup friends gear for digital modes so cannot experiment with
settings easily.

Frank VO1HP




Re: [Elecraft_K3] K3S - KTC03-1 Frequency Stability

Jim - N4ST
 

Thanks Wayne, but I’ve had this K3S for over a year and a half and never noticed the problem until I started working 6M MSK144.
I couldn’t understand why I could hear the meteor scatter pings, but wouldn’t decode. The max freq tolerance for MSK144 is 200 Hz.
When I figured out I was off frequency, I did a REF CAL adjustment and was dead on.
Then I noticed that from day-to-day I could be 50Hz-70Hz off, even for a warmed up rig.
I went through setting the REF CAL several different times, using different techniques and all seemed to work, but within a few days I would be off frequency again, by 50 Hz or so.
Now I just monitor for a few MSK144 pings and see where the majority are transmitting and offset my TX frequency by the appropriate amount and I’m good to go.
Especially easy now during e-skip when the signals are readily available.


__________
73,
Jim – N4ST


From: Elecraft_K3@yahoogroups.com [mailto:Elecraft_K3@yahoogroups.com]
Sent: Wednesday, June 14, 2017 10:43
To: Elecraft_K3@yahoogroups.com
Subject: Re: [Elecraft_K3] K3S - KTC03-1 Frequency Stability



If that is true, we’ll replace it immediately. Please contact customer support.


73,
Wayne
N6KR


On Jun 13, 2017, at 9:10 PM, 'Jim - N4ST' newsgroup@jimpricejr.com [Elecraft_K3] <Elecraft_K3@yahoogroups.com> wrote:

Nope.
I guess I paid $119 for a 1ppm oscillator upgrade that doesn't have "typical" (0.5ppm) performance.

_________
73,
Jim - N4ST

From: Elecraft_K3@yahoogroups.com [mailto:Elecraft_K3@yahoogroups.com]
Sent: Tuesday, June 13, 2017 12:34
To: Elecraft_K3@yahoogroups.com
Subject: [Elecraft_K3] Re: K3S - KTC03-1 Frequency Stability

Hi Jim,

Have you learned anything more on this issue?

Thanks
Mike
K7PI

________________________________________
Posted by: Wayne Burdick <n6kr@elecraft.com>
________________________________________


Re: [Elecraft_K3] K3S - KTC03-1 Frequency Stability

 

If that is true, we’ll replace it immediately. Please contact customer support.

73,
Wayne
N6KR

On Jun 13, 2017, at 9:10 PM, 'Jim - N4ST' newsgroup@jimpricejr.com [Elecraft_K3] <Elecraft_K3@yahoogroups.com> wrote:

Nope.
I guess I paid $119 for a 1ppm oscillator upgrade that doesn't have "typical" (0.5ppm) performance.

_________
73,
Jim - N4ST

From: Elecraft_K3@yahoogroups.com [mailto:Elecraft_K3@yahoogroups.com]
Sent: Tuesday, June 13, 2017 12:34
To: Elecraft_K3@yahoogroups.com
Subject: [Elecraft_K3] Re: K3S - KTC03-1 Frequency Stability

Hi Jim,

Have you learned anything more on this issue?

Thanks
Mike
K7PI


Re: [Elecraft_K3] Digikeyer II and Router S/W; WSJT-X; K3 Setup - Help

Kenneth Ascher
 

I have that setup and it works great.  I use USB mode.

Ken, KK4VA

On Wed, Jun 14, 2017 at 7:20 AM, fdavis@... [Elecraft_K3] <Elecraft_K3@...> wrote:
 

Joe


....I tried changing to PSK D in DATA MD on the K3 there was output when TUNE button pressed in WSJT-X.  Also output when ENABLE TX was engaged and rig keyed in auto mode by the software.
So there was something happened that was correct.  however when using DATA A for JT65 there is no output so something not set right in the K3 maybe?

...settings in the PC and the DKII Router  S/W   same for both PSK D and DATA A.

Helping setup friends gear for digital modes so cannot experiment with settings easily.

Frank VO1HP




Re: [Elecraft_K3] Digikeyer II and Router S/W; WSJT-X; K3 Setup - Help

Joe Subich, W4TV
 

....I tried changing to PSK D in DATA MD on the K3 there was output when TUNE button pressed in WSJT-X.
PSK_D is a *direct keyed* (paddle input) mode. Activating PTT in PSK_D
will generate carrier - not use audio input.

Can you operate AFSK RTTY in AFSK_A or PSKxx (fldigi, MMVARI,
WinWarbler, etc) in DATA_A? Use the example configuration available
in Router (Help | Download Documents) or in the Digikeyer II area at
http://www.microHAM-USA.com/support.html for fldigi, MMVARI, WinWarbler,
MMTTY *FSK*, etc. to set up your software.

Perform the audio set-up on Digikeyer II as directed in the "setting
audio levels" section of the microKEYER II Users Manual. Do not
deviate!

Set the K3 in Data mode, DATA A sub-mode.
Set Menu:MIC SEC = LInE In

Leave the PWR slider in WSJT-X at maximum and adjust the transmit level
using the *Windows Volume Mixer" for "Headset Earphone (microHAM CODEC)"
labeled "WSJT-x v1.x.x"

73,

... Joe, W4TV


On 6/14/2017 7:20 AM, fdavis@nfld.net [Elecraft_K3] wrote:
Joe
....I tried changing to PSK D in DATA MD on the K3 there was output when TUNE button pressed in WSJT-X. Also output when ENABLE TX was engaged and rig keyed in auto mode by the software. So there was something happened that was correct. however when using DATA A for JT65 there is no output so something not set right in the K3 maybe?
...settings in the PC and the DKII Router S/W same for both PSK D and DATA A.
Helping setup friends gear for digital modes so cannot experiment with settings easily.
Frank VO1HP


Re: [Elecraft_K3] Digikeyer II and Router S/W; WSJT-X; K3 Setup - Help

Frank Davis
 

Joe

....I tried changing to PSK D in DATA MD on the K3 there was output when TUNE button pressed in WSJT-X.  Also output when ENABLE TX was engaged and rig keyed in auto mode by the software.
So there was something happened that was correct.  however when using DATA A for JT65 there is no output so something not set right in the K3 maybe?

...settings in the PC and the DKII Router  S/W   same for both PSK D and DATA A.

Helping setup friends gear for digital modes so cannot experiment with settings easily.

Frank VO1HP



Re: [Elecraft_K3] Re: K3S - KTC03-1 Frequency Stability

Jim - N4ST
 

Nope.
I guess I paid $119 for a 1ppm oscillator upgrade that doesn't have "typical" (0.5ppm) performance.


_________
73,
Jim - N4ST




From: Elecraft_K3@yahoogroups.com [mailto:Elecraft_K3@yahoogroups.com]
Sent: Tuesday, June 13, 2017 12:34
To: Elecraft_K3@yahoogroups.com
Subject: [Elecraft_K3] Re: K3S - KTC03-1 Frequency Stability



Hi Jim,


Have you learned anything more on this issue?


Thanks
Mike
K7PI


________________________________________
Posted by: bipi@comcast.net
________________________________________


Re: [Elecraft_K3] Digikeyer II and Router S/W; WSJT-X; K3 Setup - Help

Joe Subich, W4TV
 

Frank,

Are you able to use DK II, Router, K3 and Fldigi or WinWarbler, etc.
for PSK 31, etc.? There is no difference in the way *any* audio based
data mode/software operates with a microHAM interface, Router, and K3.

73,

... Joe, W4TV

On 6/13/2017 6:35 PM, fdavis@nfld.net [Elecraft_K3] wrote:
Has anyone setup this combination of DigikeyII+Router + WSJT-X +K3 to work JT65?. Have it working on receive all Ok and can key the K3 but do not see any output? Using the Digikeyer II interface cable to the K3
and have K3 parameters set.....DATA A mode; Rearpanel audio (Using Line IN/OUT) ...etc
Can anyone help?
Frank VO1HP


Digikeyer II and Router S/W; WSJT-X; K3 Setup - Help

Frank Davis
 

Has anyone setup this combination of DigikeyII+Router + WSJT-X +K3 to work JT65?.   Have it working on receive all Ok and can key the K3 but do not see any output?  Using the Digikeyer II interface cable to the K3

and have K3 parameters set.....DATA A mode;  Rearpanel audio (Using Line IN/OUT) ...etc


Can anyone help?


Frank VO1HP


Re: K3S - KTC03-1 Frequency Stability

Mike
 

Hi Jim,

Have you learned anything more on this issue?

Thanks
Mike
K7PI


Re: [Elecraft_K3] Band Pass Filters?

David G3YYD <g3yyd@...>
 

From: Elecraft_K3@... [mailto:Elecraft_K3@...]
Sent: 12 June 2017 08:11
To: Elecraft_K3@...
Subject: RE: [Elecraft_K3] Band Pass Filters?

 




At those frequencies I suggest using coax stubs. The place to go for this is: http://www.dxzone.com/dx20560/k3na-stub-design.html

 

Antenna separation helps as well but in the case of 20/10m then it is the 2nd harmonic of 20m that needs to be attenuated the most. Keeping the antennas well apart is a good idea.

 

The lower the loss of the coax used the higher the Q of the stub and the deeper the notch is – more attenuation.

 

73 David G3YYD

 

From: Elecraft_K3@... [mailto:Elecraft_K3@...]
Sent: 11 June 2017 21:50
To: Elecraft_K3@...
Subject: [Elecraft_K3] Band Pass Filters?

 



We have FD around the corner and my club will have about 15 antenna's in a local area of a state park. I've been trying to read up on band pass filters and would like to know if anyone can recommend a filter for a K2 which does not have the KPA100 installed. I would like to operate 10m and 20m.

Thanks for your help.


 





Re: [Elecraft_K3] Band Pass Filters?

David G3YYD <g3yyd@...>
 

At those frequencies I suggest using coax stubs. The place to go for this is: http://www.dxzone.com/dx20560/k3na-stub-design.html

 

Antenna separation helps as well but in the case of 20/10m then it is the 2nd harmonic of 20m that needs to be attenuated the most. Keeping the antennas well apart is a good idea.

 

The lower the loss of the coax used the higher the Q of the stub and the deeper the notch is – more attenuation.

 

73 David G3YYD

 

From: Elecraft_K3@... [mailto:Elecraft_K3@...]
Sent: 11 June 2017 21:50
To: Elecraft_K3@...
Subject: [Elecraft_K3] Band Pass Filters?

 



We have FD around the corner and my club will have about 15 antenna's in a local area of a state park. I've been trying to read up on band pass filters and would like to know if anyone can recommend a filter for a K2 which does not have the KPA100 installed. I would like to operate 10m and 20m.

Thanks for your help.



Re: [Elecraft_K3] Band Pass Filters?

Randy Farmer W8FN
 

There are several bandpass filters available that will do what you want. Most handle 100 or 200 watt output, so they can just be put at the Antenna port of the transceiver. These have the advantage of working not on the receive path but also filter harmonics and noise from the transmitter. Two radios with similar filters on different bands will have lots of isolation, provided the antennas are arranged so that they don't couple strongly. Check Array Solutions and DX Engineering for their offerings; they offer both single band units and multiband units. I'm using the Array Solutions AS-419 II multiband filter box at the output of each of my K3s in conjunction with a switched array of the Low Band Systems single band filters (available from DX Engineering) in my SO2R contest station. The combination does a very good job of isolating one radio from the other, even at the 500W power level.

73...
Randy, W8FN

On 6/11/2017 4:49 PM, wizumwalt@... [Elecraft_K3] wrote:
 

We have FD around the corner and my club will have about 15 antenna's in a local area of a state park. I've been trying to read up on band pass filters and would like to know if anyone can recommend a filter for a K2 which does not have the KPA100 installed. I would like to operate 10m and 20m.

Thanks for your help.



Band Pass Filters?

William Irving Zumwalt
 

We have FD around the corner and my club will have about 15 antenna's in a local area of a state park. I've been trying to read up on band pass filters and would like to know if anyone can recommend a filter for a K2 which does not have the KPA100 installed. I would like to operate 10m and 20m.

Thanks for your help.

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