Re: [Elecraft] K3 shift-width/lo-hi

[Keith Trinity]

The K3 Utility help explains what gets EE INIT-ed.
Glad it is working.
Keith WE6R, Elecraft K3 Tech


On Mon, Mar 30, 2020 at 8:47 PM Martin Sole  wrote:

> Keith,
>
> Many thanks for the heads up. I did the gain calibration instinctively as
> I did not know if it would be modified by the EE-Init or not, the D10
> manual page 66 on parameter initialization does not state.
>
> All working well now and the radio is back to proper operation.
>
> Martin, HS0ZED
>
>
> On 31/03/2020 04:50, Keith Trinity WE6R wrote:
>
> Don't forget to do the TX gain cal, that gets wiped during EE INIT.
> Then save the config.
> **BUT; You might try loading your saved config, then read my notes;
> From my notes;
>
> *Cannot toggle LEDs SHIFT LO CUT HI WIDTH TAPPING LOCKED in CW or DATA
> mode(s) + N/A*
>
> *Fix;* Turn off “CW QRQ” in config menu, or set “PB CTRL” to .05 instead
> of .01
>
> Notes; Any of the following, in any combination, will lock out the toggle
> to HI CUT / LO CUT:
>
> CW mode and CW QRQ ON ("+" sign visible on LCD display, not flashing)
>
> CW mode and CONFIG:PB CTRL Shift=.01
>
> DATA mode (FSK/AFSK)
> Keith WE6R
>
>
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] K3 shift-width/lo-hi

[Bob McGraw K4TAX]

Not observed on my K3S, sn 10163 radio.  And nothing shows on my P3.

73

Bob, K4TAX

On 3/30/2020 5:39 PM, Buck wrote:
How about this one?  K3S CW mode. Tone at 14.053.953 with shift at 650 
Hz, lox cut at .10  High cut at 1.20.  Same tone at 7.026.765 and 
21.074.113 but weaker.  The tone is strong enough to show a spike on 
the P3.


Tone goes away if I move the shift off 650 Hz or change the low cut or 
high cut.  But the spike still appears on the P3 screen? Something in 
the P3?


k4ia, Buck
K3s# 11497
Honor Roll  8B DXCC
EasyWayHamBooks.com

On 3/30/2020 5:50 PM, Keith Trinity WE6R wrote:

Don't forget to do the TX gain cal, that gets wiped during EE INIT.
Then save the config.
**BUT; You might try loading your saved config, then read my notes;
 From my notes;

*_Cannot toggle LEDs SHIFT LO CUT HI WIDTH TAPPING LOCKED in CW or 
DATA mode(s) + N/A_*


_Fix;_Turn off “CW QRQ” in config menu, or set “PB CTRL” to .05 
instead of .01


Notes; Any of the following, in any combination, will lock out the 
toggle to HI CUT / LO CUT:


CW mode and CW QRQ ON ("+" sign visible on LCD display, not flashing)

CW mode and CONFIG:PB CTRL Shift=.01

DATA mode (FSK/AFSK)

Keith WE6R
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to radiok...@gmail.com

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to rmcg...@blomand.net 


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] K3 shift-width/lo-hi

[Martin Sole]

Keith,

Many thanks for the heads up. I did the gain calibration instinctively 
as I did not know if it would be modified by the EE-Init or not, the D10 
manual page 66 on parameter initialization does not state.


All working well now and the radio is back to proper operation.

Martin, HS0ZED


On 31/03/2020 04:50, Keith Trinity WE6R wrote:

Don't forget to do the TX gain cal, that gets wiped during EE INIT.
Then save the config.
**BUT; You might try loading your saved config, then read my notes;
From my notes;

*_Cannot toggle LEDs SHIFT LO CUT HI WIDTH TAPPING LOCKED in CW or 
DATA mode(s) + N/A_*


_Fix;_Turn off “CW QRQ” in config menu, or set “PB CTRL” to .05 
instead of .01


Notes; Any of the following, in any combination, will lock out the 
toggle to HI CUT / LO CUT:


CW mode and CW QRQ ON ("+" sign visible on LCD display, not flashing)

CW mode and CONFIG:PB CTRL Shift=.01

DATA mode (FSK/AFSK)

Keith WE6R


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] K3 shift-width/lo-hi

[Buck]

How about this one?  K3S CW mode. Tone at 14.053.953 with shift at 650 
Hz, lox cut at .10  High cut at 1.20.  Same tone at 7.026.765 and 
21.074.113 but weaker.  The tone is strong enough to show a spike on the 
P3.


Tone goes away if I move the shift off 650 Hz or change the low cut or 
high cut.  But the spike still appears on the P3 screen?  Something in 
the P3?


k4ia, Buck
K3s# 11497
Honor Roll  8B DXCC
EasyWayHamBooks.com

On 3/30/2020 5:50 PM, Keith Trinity WE6R wrote:

Don't forget to do the TX gain cal, that gets wiped during EE INIT.
Then save the config.
**BUT; You might try loading your saved config, then read my notes;
 From my notes;

*_Cannot toggle LEDs SHIFT LO CUT HI WIDTH TAPPING LOCKED in CW or DATA 
mode(s) + N/A_*


_Fix;_Turn off “CW QRQ” in config menu, or set “PB CTRL” to .05 instead 
of .01


Notes; Any of the following, in any combination, will lock out the 
toggle to HI CUT / LO CUT:


CW mode and CW QRQ ON ("+" sign visible on LCD display, not flashing)

CW mode and CONFIG:PB CTRL Shift=.01

DATA mode (FSK/AFSK)

Keith WE6R
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to radiok...@gmail.com

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] K3 shift-width/lo-hi

[Keith Trinity WE6R]

Don't forget to do the TX gain cal, that gets wiped during EE INIT.
Then save the config.
**BUT; You might try loading your saved config, then read my notes;
From my notes;

*_Cannot toggle LEDs SHIFT LO CUT HI WIDTH TAPPING LOCKED in CW or DATA 
mode(s) + N/A_*


_Fix;_Turn off “CW QRQ” in config menu, or set “PB CTRL” to .05 instead 
of .01


Notes; Any of the following, in any combination, will lock out the 
toggle to HI CUT / LO CUT:


CW mode and CW QRQ ON ("+" sign visible on LCD display, not flashing)

CW mode and CONFIG:PB CTRL Shift=.01

DATA mode (FSK/AFSK)

Keith WE6R
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] K3 shift-width/lo-hi

[Nr4c]

64 F and overcast here in Williamsburg, Virginia right now. 

Sent from my iPhone
...nr4c. bill


> On Mar 28, 2020, at 10:24 AM, Martin Sole  wrote:
> 
>  Bill,
> 
> Many thanks, EE-Init seems to have done the trick, if for no other reason 
> than it set default settings and restored the normal operation. Loading my 
> saved configuration, saved after the problem occurred, created the same 
> problem, no HI-Lo in SSB only on Data and AM.
> 
> I've now doe a full manual setup of all my filters and modules, I had that 
> info to hand, and saved the current full working configuration.
> 
> So normal service is restored and the Hi-Lo function is once again working on 
> all modes. Now I just need to brave the 38 degrees C to get outside and climb 
> the tower to work on the antenna.
> 
> Many thanks Bill
> 
> 73
> Martin, HS0ZED
> 
> 
> 
>> On 28/03/2020 15:53, Nr4c wrote:
>> Look in manual for “EE_Init”. 
>> 
>> Is it set to Hi-Lo for SSB and Shift-Width for CW?   If so, why change it?
>> 
>> Sent from my iPhone
>> ...nr4c. bill
>> 
>> 
>>> On Mar 28, 2020, at 3:51 AM, Martin Sole  wrote:
>>> 
>>> HI,
>>> 
>>> So today having fun in WPX but playing with the K3 controls I am fairly 
>>> sure that I should be able to change from shift-width to lo-hi by just a 
>>> tap of either knob, but it does nothing. Well it does work as expected in 
>>> Data and AM mode but not in CW or SSB. All other functions are normal and 
>>> working as expected including the NORM and I/II switch functions. its just 
>>> shift-width/hi-lo in CW and SSB modes only.
>>> 
>>> I've never needed to do this before but am scratching my head how to do a 
>>> hard reset to default baseline settings, cannot find anything in the manual.
>>> 
>>> So what's going on? Have I set something that could disable this, and how 
>>> can I achieve a clean test state to see what should or shouldn;t work.
>>> 
>>> 73
>>> Martin, HS0ZED
>>> 
>>> 
>>> __
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:Elecraft@mailman.qth.net
>>> 
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to n...@widomaker.com 
> 
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] K3 shift-width/lo-hi

[Martin Sole]

Bill,

Many thanks, EE-Init seems to have done the trick, if for no other 
reason than it set default settings and restored the normal operation. 
Loading my saved configuration, saved after the problem occurred, 
created the same problem, no HI-Lo in SSB only on Data and AM.


I've now doe a full manual setup of all my filters and modules, I had 
that info to hand, and saved the current full working configuration.


So normal service is restored and the Hi-Lo function is once again 
working on all modes. Now I just need to brave the 38 degrees C to get 
outside and climb the tower to work on the antenna.


Many thanks Bill

73
Martin, HS0ZED



On 28/03/2020 15:53, Nr4c wrote:

Look in manual for “EE_Init”.

Is it set to Hi-Lo for SSB and Shift-Width for CW?   If so, why change it?

Sent from my iPhone
...nr4c. bill



On Mar 28, 2020, at 3:51 AM, Martin Sole  wrote:

HI,

So today having fun in WPX but playing with the K3 controls I am fairly sure 
that I should be able to change from shift-width to lo-hi by just a tap of 
either knob, but it does nothing. Well it does work as expected in Data and AM 
mode but not in CW or SSB. All other functions are normal and working as 
expected including the NORM and I/II switch functions. its just 
shift-width/hi-lo in CW and SSB modes only.

I've never needed to do this before but am scratching my head how to do a hard 
reset to default baseline settings, cannot find anything in the manual.

So what's going on? Have I set something that could disable this, and how can I 
achieve a clean test state to see what should or shouldn;t work.

73
Martin, HS0ZED


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to n...@widomaker.com


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] K3 shift-width/lo-hi

[Nr4c]

Look in manual for “EE_Init”. 

Is it set to Hi-Lo for SSB and Shift-Width for CW?   If so, why change it?

Sent from my iPhone
...nr4c. bill


> On Mar 28, 2020, at 3:51 AM, Martin Sole  wrote:
> 
> HI,
> 
> So today having fun in WPX but playing with the K3 controls I am fairly sure 
> that I should be able to change from shift-width to lo-hi by just a tap of 
> either knob, but it does nothing. Well it does work as expected in Data and 
> AM mode but not in CW or SSB. All other functions are normal and working as 
> expected including the NORM and I/II switch functions. its just 
> shift-width/hi-lo in CW and SSB modes only.
> 
> I've never needed to do this before but am scratching my head how to do a 
> hard reset to default baseline settings, cannot find anything in the manual.
> 
> So what's going on? Have I set something that could disable this, and how can 
> I achieve a clean test state to see what should or shouldn;t work.
> 
> 73
> Martin, HS0ZED
> 
> 
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to n...@widomaker.com 
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] Panadapter shift when filter switched in

[Richard Ferch]

Do you have any 5-pole roofing filters? In particular, is your wide filter
a 5-pole 2.7 kHz filter or an 8-pole 2.8 kHz filter? The 5-pole filters
have an offset, which is written on the filter and which is entered into
the firmware with the CONFIG:FLx FRQ menu entry (or by using the K3
Utility). When a filter with an offset is selected, the IF changes by the
amount of the offset. For example, if you have a filter with an offset of
1.0 kHz, then when that filter is selected, the centre of the IF bandpass
is actually moved by 1 kHz relative to where it is when using a filter with
no offset. If your panadapter takes its input from the IF Out port, input
signals will move when you switch the receiver between filters whose
offsets are different from one another.

There is also a per-mode offset between SSB modes and CW, AM or FM. This is
not actually a change in IF frequency, but rather a change in the way the
radio's dial frequency is related to the receiver's bandpass. In CW, AM and
FM, the receiver's bandpass is centred on the dial frequency. In FSK D or
AFSK A, the receiver's bandpass is centred between the mark and space
tones, i.e. 85 Hz away from the dial frequency. In SSB or DATA A, the
receiver's bandpass is centred above (USB and DATA A) or below (LSB) the
dial frequency by approximately half the audio bandwidth (more accurately,
by the DSP filter Fc setting). If the panadapter uses the dial frequency to
label frequencies in the display, simply changing modes will result in a
shift in the displayed signal relative to the frequency markers.

There are a couple of other things that affect the relationship between the
IF Out signal and the frequency displayed on a panadapter. One is the
filter Shift control (or Hi-Cut and Lo-Cut controls) - when the filter Fc
is moved, so is the IF relative to the signal frequency. Another was
mentioned by Wayne in a recent post on another thread: in CW, with some
combinations of sidetone pitch (low) and DSP filter bandwidth (high), the
firmware moves the IF centre frequency to ensure that the low edge of the
audio bandpass stays away from zero. Both of these effects are usually
quite a bit smaller than the mode-to-mode or crystal filter offset
differences, but they can be seen easily enough when you zoom in the
panadapter display.

There is a radio control command specific to the K3/K3S that software and
the P3 can use in order to adjust the frequency display markings to
compensate for these offsets, but generic software like HDSDR doesn't use
that command.

73,
Rich VE3KI


VE5UO wrote:

Hi, I have a K3s with a 400hz filter.  I am using an SDRPlay (HDSDR)
connected to the IF out port.  When the 400Hz filter activated using the
xfil button or tuning the DSP), the signal on the panadapter shifts up
approximately 1.5khz.  It seems to happen on all bands/modes.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] Panadapter shift when filter switched in

[tomb18]

HiMany sdr packages do not present an accurate output based on mode and filters 
when fed from the if out. Hdsdr is one of them.73 tomva2fsq.com



Sent from my Samsung Galaxy smartphone.
 Original message From: Dave Scarfe  
Date: 2018-08-05  11:15 PM  (GMT-05:00) To: Elecraft@mailman.qth.net Subject: 
[Elecraft] Panadapter shift when filter switched in 
Hi, I have a K3s with a 400hz filter.  I am using an SDRPlay (HDSDR)
connected to the IF out port.  When the 400Hz filter activated using the
xfil button or tuning the DSP), the signal on the panadapter shifts up
approximately 1.5khz.  It seems to happen on all bands/modes.

Any help very much appreciated!

73,
Dave
VE5UO
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to tom...@videotron.ca
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Wes Stewart]

SOP on MS and EME over 30 years ago.

On 7/5/2017 5:54 PM, Jim Brown wrote:

...
There's another powerful way to prevent overload of your RX by your neighbor 
-- out here in W6, neighbors try to TX on the same cycle as our neighbors.


73, Jim K9YC


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Jim Brown]

On 7/5/2017 12:23 AM, Richard Lamont wrote:

Thank you for your rigorous, quantified mathematical proof.


Good engineering is not about math proofs, it's about big picture 
analysis of entire systems, understanding the limitations of each 
element, and concentrating on those elements that optimize the entire 
system.


Clearly the JT65 transmitted harmonics I've seen, as received on my K3S,
which blotted out the weak JT9 station I was trying to work at around
-27, must have been a figment of my imagination.


I'm not suggesting that wasn't real, but simply that harmonic distortion 
at AF is not the only cause of the problem. And questioning that 
shifting the TX signal to a frequency where the harmonic is out of the 
audio passband is the only solution.


Using a better audio interface and setting levels correctly can easily 
get individual AF distortion products 60 dB below the the level of sine 
wave modulation. In an earlier post, I noted that interfaces sold to 
semi-pro audio users generally offer THD in the range of 0.5 - 0.1% and 
that number is the root-sum-square combination of the individual 
components.  In that earlier post, I included a link that suggested 
specific make/models suitable for this use, all below $100 US, and four 
easy ways for users to set levels, depending on the available tools 
(including ears).


You also seem to have missed my objection that WSJT-X forces the radio 
into split mode, when I want to use the second RX (controlled by the 2nd 
VFO) to SIMULTANEOUSLY monitor CW while I'm in RX mode with WSJT-X, AND 
to quickly do and A/B exchange of VFOs to work a station I hear on CW, 
then return to WSJT-X.  I did that almost continuously during the big 
opening we experienced here last Friday, and one of those times got me a 
new grid (in a new state) 2,500 miles away.


There's another powerful way to prevent overload of your RX by your 
neighbor -- out here in W6, neighbors try to TX on the same cycle as our 
neighbors. No math proofs required.


73, Jim K9YC

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Richard Lamont]

On 05/07/17 01:33, Jim Brown wrote:

> Richard -- I'm a Fellow of the Audio Engineering Society, BSEE, retired,
> worked in both audio and broadcasting. I'm VERY aware of distortion
> products and the mechanisms that produce them. I also TAUGHT this stuff.
> Your concerns are overblown.

Thank you for your rigorous, quantified mathematical proof.

Clearly the JT65 transmitted harmonics I've seen, as received on my K3S,
which blotted out the weak JT9 station I was trying to work at around
-27, must have been a figment of my imagination.

73,
Richard G4DYA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Bob McGraw K4TAX]

I fully agree with Jim, K9YC on the point of distortion.   In fact there 
are two signal paths in which distortion will affect ones results.   
Certainly audio distortion on the TX side will affect the quality of 
ones transmitted signal and distortion on the receive will affect ones 
decode quality.


In my Windows 10 environment I find the Speaker level {USB Audio CODEC} 
best at about 50% or - 10 dB.   Also in this pane, be sure to disable 
all enhancements.   This allows the  PWR fader for WSJT-X to operate 
about 50%  or mid range of its travel.  The Line gain on the K3S runs 
about 25 for 4 bars solid on the ALC and the 5th bar flickering in Data 
A mode.Adjust actual RF power output via the PWR control on the radio.


On the receive end of WSJT-X, I find the Recording device level to be 
optimized for the USB CODEC at 0 dB with the K3S line out level at the 
normal / default of 010.Excessive USB CODAC gain at this point can 
over drive the audio stage causing distortion and one will sacrifice 
decode quality.   The WSJT-X digital gain runs about the 3rd to 4th bar 
from the bottom and the level indicator nominally at about 25 dB to 35 
dB depending on band noise and signals.


Should you find any of your controls at an extreme position, I would be 
concerned that something is not correct up or down stream in the audo paths.


73

Bob, K4TAX



On 7/4/2017 7:33 PM, Jim Brown wrote:

On 7/4/2017 3:43 PM, Richard Lamont wrote:

That's receive levels. I was talking about Tx distortion.


The distortion I measured was for TX mode -- sound interface to radio.

Richard -- I'm a Fellow of the Audio Engineering Society, BSEE, 
retired, worked in both audio and broadcasting. I'm VERY aware of 
distortion products and the mechanisms that produce them. I also 
TAUGHT this stuff. Your concerns are overblown.


FWIW, I am FAR more concerned with distortions produced in ham gear at 
RF.


73, Jim K9YC

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to rmcg...@blomand.net




__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Nate Bargmann]

* On 2017 04 Jul 19:03 -0500, Christopher Hoover wrote:
> I use  fake it mode for split on my K3S, data mode, 4.00 on bandwidth, 1.5
> for shift.Works great.
> 
> The rig control for WSJT-X split is not reliable for me.I build from
> tip of tree from the repo with either hamlib-3.1 or hamlib git, so it is
> certainly possible I am seeing a regression that is not in older, stable
> releases.   (I looked at the code that handles split mode to try to fix it
> ... shivers.)

I built WSJT-X 1.7 six months ago from the distribution tarball on this
Devuan Jessie box and WSJT-X has been rock solid reliable in split mode
and my K3 with DATA A mode.  Just worked a few more stations this
evening on 15 and 17m.

73, Nate, N0NB

-- 

"The optimist proclaims that we live in the best of all
possible worlds.  The pessimist fears this is true."

Ham radio, Linux, bikes, and more: http://www.n0nb.us
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Jim Brown]

On 7/4/2017 3:43 PM, Richard Lamont wrote:

That's receive levels. I was talking about Tx distortion.


The distortion I measured was for TX mode -- sound interface to radio.

Richard -- I'm a Fellow of the Audio Engineering Society, BSEE, retired, 
worked in both audio and broadcasting. I'm VERY aware of distortion 
products and the mechanisms that produce them. I also TAUGHT this stuff. 
Your concerns are overblown.


FWIW, I am FAR more concerned with distortions produced in ham gear at RF.

73, Jim K9YC

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Christopher Hoover]

I use  fake it mode for split on my K3S, data mode, 4.00 on bandwidth, 1.5
for shift.Works great.

The rig control for WSJT-X split is not reliable for me.I build from
tip of tree from the repo with either hamlib-3.1 or hamlib git, so it is
certainly possible I am seeing a regression that is not in older, stable
releases.   (I looked at the code that handles split mode to try to fix it
... shivers.)

73 de AI6KG



On Tue, Jul 4, 2017 at 3:43 PM, Richard Lamont  wrote:

> On 04/07/17 22:56, Jim Brown wrote:
> > Richard,
> >
> > Not nonsense at all.  WSJT-X is VERY robust in the ability to reject
> > this sort of QRM. The screen grab below is a great example.  I continue
> > to be amazed by the decoding in WSJT-X. About 10 days ago, W0OGH
> > accidentally got out of sync with JA7QVI, calling on his TX cycle, and
> > on the same frequency. As this screen grab clearly shows, W0OGH was 9 dB
> > stronger on the 0053Z cycle and 12 dB stronger on the 0055Z cycle, yet
> > both signals were decoded without error!
> >
> > During a wonderful 6M opening this past Friday evening west coast time,
> > I had a LOT of JT65/JT9 passes with more than 20 clean decodes on each
> > pass. I regularly see decodes in the -20 to -28 range, even with very
> > strong signals capturing the AGC. It's only necessary to keep peak
> > signal levels to the A/D below digital clip.
>
> That's receive levels. I was talking about Tx distortion.
>
> While it's certainly the case that WSJT-X's two-pass decoder can
> *sometimes* decode weak signals underneath overlapping strong ones, this
> isn't always the case and it can never be a magic cure all. That would
> have Claude and Harry spinning in their graves. Any kind of spurious
> crud will raise the noise floor, which is always a bad thing.
>
> Also, harmonics really clutter the waterfall. A JT65 signal on, say 700
> Hz, will appear between 700-878 Hz. The second and third harmonics will
> appear between 1400-1756 and 2100-2634 Hz. Just one distorted JT65
> signal easily mess up over a kHz of bandwidth in total. With a busy band
> this can turn the display into an incomprehensible mush.
>
> Also, audio harmonics of JT65 signals can spread into the part of the
> band used by JT9, which does not have a two-pass decoder.
>
> The WSJT-X developers are a *very* clever team of 25 people, led by a
> Nobel-prize winning professor of physics at Princeton, who have
> considered all this stuff over many years with a forensic, mathematical
> rigour of the kind that most of us can only guess at. If they say that
> it's a good idea to keep TX audio above 1500 Hz, I think I'll trust
> their word over yours.
>
> 73,
> Richard G4DYA
>
>
> 73,
> Richard G4DYA
>
>
>
>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to c...@murgatroid.com
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Richard Lamont]

On 04/07/17 22:56, Jim Brown wrote:
> Richard,
> 
> Not nonsense at all.  WSJT-X is VERY robust in the ability to reject
> this sort of QRM. The screen grab below is a great example.  I continue
> to be amazed by the decoding in WSJT-X. About 10 days ago, W0OGH
> accidentally got out of sync with JA7QVI, calling on his TX cycle, and
> on the same frequency. As this screen grab clearly shows, W0OGH was 9 dB
> stronger on the 0053Z cycle and 12 dB stronger on the 0055Z cycle, yet
> both signals were decoded without error!
> 
> During a wonderful 6M opening this past Friday evening west coast time,
> I had a LOT of JT65/JT9 passes with more than 20 clean decodes on each
> pass. I regularly see decodes in the -20 to -28 range, even with very
> strong signals capturing the AGC. It's only necessary to keep peak
> signal levels to the A/D below digital clip.

That's receive levels. I was talking about Tx distortion.

While it's certainly the case that WSJT-X's two-pass decoder can
*sometimes* decode weak signals underneath overlapping strong ones, this
isn't always the case and it can never be a magic cure all. That would
have Claude and Harry spinning in their graves. Any kind of spurious
crud will raise the noise floor, which is always a bad thing.

Also, harmonics really clutter the waterfall. A JT65 signal on, say 700
Hz, will appear between 700-878 Hz. The second and third harmonics will
appear between 1400-1756 and 2100-2634 Hz. Just one distorted JT65
signal easily mess up over a kHz of bandwidth in total. With a busy band
this can turn the display into an incomprehensible mush.

Also, audio harmonics of JT65 signals can spread into the part of the
band used by JT9, which does not have a two-pass decoder.

The WSJT-X developers are a *very* clever team of 25 people, led by a
Nobel-prize winning professor of physics at Princeton, who have
considered all this stuff over many years with a forensic, mathematical
rigour of the kind that most of us can only guess at. If they say that
it's a good idea to keep TX audio above 1500 Hz, I think I'll trust
their word over yours.

73,
Richard G4DYA


73,
Richard G4DYA




__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Jim Brown]

Richard,

Not nonsense at all.  WSJT-X is VERY robust in the ability to reject 
this sort of QRM. The screen grab below is a great example.  I continue 
to be amazed by the decoding in WSJT-X. About 10 days ago, W0OGH 
accidentally got out of sync with JA7QVI, calling on his TX cycle, and 
on the same frequency. As this screen grab clearly shows, W0OGH was 9 dB 
stronger on the 0053Z cycle and 12 dB stronger on the 0055Z cycle, yet 
both signals were decoded without error!


During a wonderful 6M opening this past Friday evening west coast time, 
I had a LOT of JT65/JT9 passes with more than 20 clean decodes on each 
pass. I regularly see decodes in the -20 to -28 range, even with very 
strong signals capturing the AGC. It's only necessary to keep peak 
signal levels to the A/D below digital clip.


73, Jim K9YC

=   =   =   =   =   =   =   =  =   =

0053 -23  0.3 2788 @  K1JT W7AH DM42

0053 -14  0.1  817 #  JA7QVI W0OGH DM52

0053 -24  0.0 1274 #  CQ DX JF3DRI PM74

0053 -14  0.2 1590 #  N4GBK N6ML CM97

0053 -23  0.6  817 #  CQ DX JA7QVI QM08

- 6m

0055  -7  0.1  817 #  JA7QVI W0OGH DM52

0055 -22 -0.0 1274 #  CQ DX JF3DRI PM74

0055 -16  0.2 1588 #  N4GBK N6ML R-07

0055 -19  0.6  816 #  N6WS JA7QVI R-06


On 7/4/2017 1:47 PM, Richard Lamont wrote:

On 04/07/17 18:37, Jim Brown wrote:


The split mode in WSJT-X is simply a crutch for those who don't know (or
don't care) how to set audio levels so that distortion is not produced
in the audio chain.

Sorry, but that's nonsense.

With a strong signal, just 1% distortion will produce audio harmonics
that are only 40-ish dB down on the fundamental. That's plenty to cause
QRM. With these modes it's possible to have work a station that's 60 dB
down on another just a few Hz away. WSJT-X, being based on 16-bit
digital audio, has an inherently high dynamic range.

The split mode exists (a) to enable people to work over a wider range of
frequencies than a single SSB channel, and (b) to ensure that the Tx
audio frequency is always at least 1500 Hz, ensuring that *low-level*
harmonics get filtered out. Even with a clean TX and audio levels set
just so, it's well worth having that extra filtering in place.

73,
Richard G4DYA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to j...@audiosystemsgroup.com



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Richard Lamont]

On 04/07/17 19:38, Bob McGraw K4TAX wrote:

> One anomaly which I've just observed with my K3S.  I did set the
> software as suggested for SPLIT mode for WSJT-X / JT-65.   The radio
> followed as expected.   I made a few contacts successfully with this
> configuration.   When I closed WSJT-X I noted it left the radio in SPLIT
> mode.   I can just see all of the confusion and frustration not to
> mention unintentional QRM created by this occurrence.   Another trap to
> watch for.
> 
> Probably in my case, even a better reason not to use SPLIT.   In other
> words, it isn't idiot proof and I've been accused as being as dumb as a
> box of rocks.

I use a macro to unset all the WSJT-X-specific settings on my rig when I
switch to another mode. Among other things it unsplits and turns AGC
back on.

73,
Richard G4DYA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Brian Waterworth]

Actually, my experience is different.  If I transmit at the edges of the
bandpass, my signal is attenuated due to the bandpass of the output stage.
I hope I am saying this correctly.  This is why I use split to ensure that
the signal I transmit engages the full power of the KX3.

Now, I have read many times in this forum that the setup of audio based
digital modes only needs to set the audio so you get 4 bars of alc (5th
flickering) and then set the output power to 5w (in my case that is what I
use).  You set these independently of one another.  Fine.  I have done
that.  But, I have observed that if I don't use split mode and I respond to
a cq at the edges of the bandpass (e.g., 200-300hz or 2500-2700hz), my
signal is noticeably weaker.

Have I misconfigured something on the KX3?  The USB sound card I am using
is many times wider than a typical USB signal.

regards,
Brian
VE3IBW



On Tue, Jul 4, 2017 at 2:38 PM, Bob McGraw K4TAX 
wrote:

> One anomaly which I've just observed with my K3S.  I did set the software
> as suggested for SPLIT mode for WSJT-X / JT-65.   The radio followed as
> expected.   I made a few contacts successfully with this configuration.
>  When I closed WSJT-X I noted it left the radio in SPLIT mode.   I can just
> see all of the confusion and frustration not to mention unintentional QRM
> created by this occurrence.   Another trap to watch for.
>
> Probably in my case, even a better reason not to use SPLIT.   In other
> words, it isn't idiot proof and I've been accused as being as dumb as a box
> of rocks.
>
> 73
>
> Bob, K4TAX
>
>
> On 7/4/2017 1:25 PM, Tom-KQ5S wrote:
>
>> No argument but some folks, particularly those new to WSJTX, read the
>> WSJTX
>> user manual and follow it.  Also split mode is "encouraged" on the WSJT
>> group.
>>
>> Split Operation: Significant advantages result from using Split mode
>> (separate VFOs for Rx and Tx) if your radio supports it. If it does not,
>> WSJT-X can emulate such behavior. Either method will result in a cleaner
>> transmitted signal, by keeping the Tx audio always in the range 1500 to
>> 2000 Hz so that audio harmonics cannot pass through the Tx sideband
>> filter.
>> Select Rig to use the radio’s Split mode, or Fake It to have WSJT-X adjust
>> the VFO frequency as needed, when T/R switching occurs. Choose None if you
>> do not wish to use split operation.
>>
>>
>>
>>
>> 73,
>> Tom - KQ5S
>>
>> O
>>
>
>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to brian.waterwo...@gmail.com
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Richard Lamont]

On 04/07/17 18:37, Jim Brown wrote:

> The split mode in WSJT-X is simply a crutch for those who don't know (or
> don't care) how to set audio levels so that distortion is not produced
> in the audio chain.
Sorry, but that's nonsense.

With a strong signal, just 1% distortion will produce audio harmonics
that are only 40-ish dB down on the fundamental. That's plenty to cause
QRM. With these modes it's possible to have work a station that's 60 dB
down on another just a few Hz away. WSJT-X, being based on 16-bit
digital audio, has an inherently high dynamic range.

The split mode exists (a) to enable people to work over a wider range of
frequencies than a single SSB channel, and (b) to ensure that the Tx
audio frequency is always at least 1500 Hz, ensuring that *low-level*
harmonics get filtered out. Even with a clean TX and audio levels set
just so, it's well worth having that extra filtering in place.

73,
Richard G4DYA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Tom-KQ5S]

Thanks Joe.  Mike, W9MDB, sent me a procedure using WSJTX to determine the
cutoff points.  I  arrived at exactly what you are saying.  I am using 1500
and find that I can copy JT9 out to 3000 and if a stronger signal out to
about 3300.



73,
Tom - KQ5S

On Tue, Jul 4, 2017 at 7:25 AM, Joe Subich, W4TV  wrote:

>
> I am using a width of 4 khz and using the radio in split mode.
>>
> Width of 4 KHz is useless with a 2800 Hz SSB filter.  You do not
> need (and can't use) more than 3000 - 3300 Hz.
>
> The default shift of 1500 (for DATA A) will provide relatively
> flat audio response from 300 Hz to 2800 Hz with Width at 3000 Hz.
> If you move the shift to 1700 the "flat area" of the audio pass-
> band will be about 300 to 3000 Hz.
>
> Remember, with a 2800 Hz filter the maximum bandwidth is 2800 Hz
> between the -3 dB points.  Setting a wider DSP filter is not going
> to make the flat are any wider it will only allow you to see more
> of the filter skirts.  If you really need the full 4 KHz get an
> AM (6 KHz) or FM (13 KHz) filter.
>
> 73,
>
>... Joe, W4TV
>
>
> On 7/2/2017 3:50 PM, Tom-KQ5S wrote:
>
>> Hope this is not a dupe.  I sent it over an hour ago and nothing showed
>> up.
>>
>> I am trying to tweak my WSJTX setup.  What is the recommended shift for
>> the
>> K3S while running WSJTX?  I have the 2.8 khz SSB filter installed.  I am
>> using a width of 4 khz and using the radio in split mode.
>>
>>
>> 73,
>> Tom - KQ5S
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to li...@subich.com
>>
>> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to kq5s...@gmail.com
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Joe Subich, W4TV]

I am using a width of 4 khz and using the radio in split mode.

Width of 4 KHz is useless with a 2800 Hz SSB filter.  You do not
need (and can't use) more than 3000 - 3300 Hz.

The default shift of 1500 (for DATA A) will provide relatively
flat audio response from 300 Hz to 2800 Hz with Width at 3000 Hz.
If you move the shift to 1700 the "flat area" of the audio pass-
band will be about 300 to 3000 Hz.

Remember, with a 2800 Hz filter the maximum bandwidth is 2800 Hz
between the -3 dB points.  Setting a wider DSP filter is not going
to make the flat are any wider it will only allow you to see more
of the filter skirts.  If you really need the full 4 KHz get an
AM (6 KHz) or FM (13 KHz) filter.

73,

   ... Joe, W4TV


On 7/2/2017 3:50 PM, Tom-KQ5S wrote:

Hope this is not a dupe.  I sent it over an hour ago and nothing showed up.

I am trying to tweak my WSJTX setup.  What is the recommended shift for the
K3S while running WSJTX?  I have the 2.8 khz SSB filter installed.  I am
using a width of 4 khz and using the radio in split mode.


73,
Tom - KQ5S
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to li...@subich.com


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Bob McGraw K4TAX]

One anomaly which I've just observed with my K3S.  I did set the 
software as suggested for SPLIT mode for WSJT-X / JT-65.   The radio 
followed as expected.   I made a few contacts successfully with this 
configuration.   When I closed WSJT-X I noted it left the radio in SPLIT 
mode.   I can just see all of the confusion and frustration not to 
mention unintentional QRM created by this occurrence.   Another trap to 
watch for.


Probably in my case, even a better reason not to use SPLIT.   In other 
words, it isn't idiot proof and I've been accused as being as dumb as a 
box of rocks.


73

Bob, K4TAX


On 7/4/2017 1:25 PM, Tom-KQ5S wrote:

No argument but some folks, particularly those new to WSJTX, read the WSJTX
user manual and follow it.  Also split mode is "encouraged" on the WSJT
group.

Split Operation: Significant advantages result from using Split mode
(separate VFOs for Rx and Tx) if your radio supports it. If it does not,
WSJT-X can emulate such behavior. Either method will result in a cleaner
transmitted signal, by keeping the Tx audio always in the range 1500 to
2000 Hz so that audio harmonics cannot pass through the Tx sideband filter.
Select Rig to use the radio’s Split mode, or Fake It to have WSJT-X adjust
the VFO frequency as needed, when T/R switching occurs. Choose None if you
do not wish to use split operation.




73,
Tom - KQ5S

O



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Tom-KQ5S]

No argument but some folks, particularly those new to WSJTX, read the WSJTX
user manual and follow it.  Also split mode is "encouraged" on the WSJT
group.

Split Operation: Significant advantages result from using Split mode
(separate VFOs for Rx and Tx) if your radio supports it. If it does not,
WSJT-X can emulate such behavior. Either method will result in a cleaner
transmitted signal, by keeping the Tx audio always in the range 1500 to
2000 Hz so that audio harmonics cannot pass through the Tx sideband filter.
Select Rig to use the radio’s Split mode, or Fake It to have WSJT-X adjust
the VFO frequency as needed, when T/R switching occurs. Choose None if you
do not wish to use split operation.




73,
Tom - KQ5S

On Tue, Jul 4, 2017 at 12:37 PM, Jim Brown 
wrote:

> I agree. I use WSJT-X mostly on 6M during the summer and 160M during the
> winter. On 6M, I can't use the WSJT-X split mode, because it takes over my
> second VFO, preventing me from working back and forth from WSJT-X on one
> VFO (and RX) and CW on the low end of the band.
>
> The split mode in WSJT-X is simply a crutch for those who don't know (or
> don't care) how to set audio levels so that distortion is not produced in
> the audio chain. The link below includes simple procedures for getting
> those settings right.  It applies to all sorts of computer-to-rig audio
> connections, not only those with a USB interface.
>
> http://k9yc.com/USB_Interfaces.pdf
>
> BTW -- a decent USB interface can GREATLY improve decoding of weak
> signals.  That link describes my testing that clearly shows that.
>
> 73, Jim K9YC
>
>  On 7/4/2017 6:05 AM, Bob McGraw K4TAX wrote:
>
>> Why split?  The K3S should be in Data A mode and should switch to Data
>> when you allow WSJT-X to connect.
>>
>
>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to kq5s...@gmail.com
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Jim Brown]

I agree. I use WSJT-X mostly on 6M during the summer and 160M during the 
winter. On 6M, I can't use the WSJT-X split mode, because it takes over 
my second VFO, preventing me from working back and forth from WSJT-X on 
one VFO (and RX) and CW on the low end of the band.


The split mode in WSJT-X is simply a crutch for those who don't know (or 
don't care) how to set audio levels so that distortion is not produced 
in the audio chain. The link below includes simple procedures for 
getting those settings right.  It applies to all sorts of 
computer-to-rig audio connections, not only those with a USB interface.


http://k9yc.com/USB_Interfaces.pdf

BTW -- a decent USB interface can GREATLY improve decoding of weak 
signals.  That link describes my testing that clearly shows that.


73, Jim K9YC

 On 7/4/2017 6:05 AM, Bob McGraw K4TAX wrote:
Why split?  The K3S should be in Data A mode and should switch to Data 
when you allow WSJT-X to connect. 



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Tom-KQ5S]

From the WSJTX users manual:

Split Operation: Significant advantages result from using Split mode
(separate VFOs for Rx and Tx) if your radio supports it. If it does not,
WSJT-X can emulate such behavior. Either method will result in a cleaner
transmitted signal, by keeping the Tx audio always in the range 1500 to
2000 Hz so that audio harmonics cannot pass through the Tx sideband filter.
Select Rig to use the radio’s Split mode, or Fake It to have WSJT-X adjust
the VFO frequency as needed, when T/R switching occurs. Choose None if you
do not wish to use split operation.




73,
Tom - KQ5S

On Tue, Jul 4, 2017 at 3:40 AM, David Anderson  wrote:

> Tom,
>
> Not a dupe, sometimes it takes a while for post to show. So don't worry.
>
> What mode are you going to be using WSJT-C on that requires a split?
>
> I have used WSJT-C here on JT65 and MSK144.
>
>
> 73 from David GM4JJJ
>
> > On 2 Jul 2017, at 20:50, Tom-KQ5S  wrote:
> >
> > Hope this is not a dupe.  I sent it over an hour ago and nothing showed
> up.
> >
> > I am trying to tweak my WSJTX setup.  What is the recommended shift for
> the
> > K3S while running WSJTX?  I have the 2.8 khz SSB filter installed.  I am
> > using a width of 4 khz and using the radio in split mode.
> >
> >
> > 73,
> > Tom - KQ5S
> > __
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:Elecraft@mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> > Message delivered to gm4...@yahoo.co.uk
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Wes Stewart]

Since I am being dragged, kicking and screaming, into these imaginary QSO modes 
and have yet to allow my computer to talk to anyone else's computer on the air, 
perhaps I shouldn't comment, but I will anyway :-) I am receiving BTW, using 
WSJT-X in JT65.  Depending on the tone(s), if the K3 is in split 
"Settings-->Radio-->Split Operation-->Rig" the the software will command the TX 
QRG to an offset that puts the tones in the "sweet spot".


It's all explained in the very helpful help file.

Wes  N7WS


  On 7/4/2017 6:05 AM, Bob McGraw K4TAX wrote:
Why split?  The K3S should be in Data A mode and should switch to Data when 
you allow WSJT-X to connect.   Typical bandwidth for receive is 2.4 kHz to 2.7 
kHz.If you switch to JT-9 via the software then the radio should move up 
band 2 kHz.


This is all configured in the  Settings F2 menu of WSJT-X.  If you need screen 
shots, I can provide such.


73

Bob, K4TAX


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift for WSJTX

[Brian Waterworth]

I have a KX3 and run with the same configuration as you list.  Works
perfectly and keeps my transmissions in the sweetspot.  This wide filter
setting lets me see JT65 and JT9 all at once and the split shifts me to the
right spot to handle either.  I have used the split and the fake-it
settings with the KX3 and both work great.

With regards to the 4Khz wide filter, I can't do that with my other rigs
(Yaseu FT-450D) rigs as they don't have this width.  This effectively
reduces the usability of WSJT-X because I have to switch modes to either
watch JT65 or JT9 individually.  Consequently, I do all my JT work on the
KX3.

regards,
Brian
VE3IBW



On Sun, Jul 2, 2017 at 2:12 PM, Tom-KQ5S  wrote:

> I am trying to tweak my WSJTX setup.  What is the recommended shift for the
> K3S while running WSJTX?  I have the 2.8 khz SSB filter installed.  I am
> using a width of 4 khz and using the radio in split mode.
>
>
> 73,
> Tom - KQ5S
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to brian.waterwo...@gmail.com
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Tom-KQ5S]

Wow the message only took 24 hours to post.

I am no expert but from what I have read it is best to select split
operations in the WSJTX settings.  By doing this you can work JT9 and JT65
at the same time since WSJTX will change the split frequency to insure you
are within the passband.

I keep my WJTX mode set to JT9/JT65 and can work both without having to
change anything.

Of course I could be off in left field and if so someone will correct me.


73,
Tom - KQ5S


73,
Tom - KQ5S

On Tue, Jul 4, 2017 at 8:05 AM, Bob McGraw K4TAX 
wrote:

> Why split?  The K3S should be in Data A mode and should switch to Data
> when you allow WSJT-X to connect.   Typical bandwidth for receive is 2.4
> kHz to 2.7 kHz.If you switch to JT-9 via the software then the radio
> should move up band 2 kHz.
>
> This is all configured in the  Settings F2 menu of WSJT-X.  If you need
> screen shots, I can provide such.
>
> 73
>
> Bob, K4TAX
>
>
> On 7/2/2017 2:50 PM, Tom-KQ5S wrote:
>
>> Hope this is not a dupe.  I sent it over an hour ago and nothing showed
>> up.
>>
>> I am trying to tweak my WSJTX setup.  What is the recommended shift for
>> the
>> K3S while running WSJTX?  I have the 2.8 khz SSB filter installed.  I am
>> using a width of 4 khz and using the radio in split mode.
>>
>>
>> 73,
>> Tom - KQ5S
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to rmcg...@blomand.net
>>
>>
>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to kq5s...@gmail.com
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S Shift Setting for WSJTX

[Bob McGraw K4TAX]

Why split?  The K3S should be in Data A mode and should switch to Data 
when you allow WSJT-X to connect.   Typical bandwidth for receive is 2.4 
kHz to 2.7 kHz.If you switch to JT-9 via the software then the radio 
should move up band 2 kHz.


This is all configured in the  Settings F2 menu of WSJT-X.  If you need 
screen shots, I can provide such.


73

Bob, K4TAX


On 7/2/2017 2:50 PM, Tom-KQ5S wrote:

Hope this is not a dupe.  I sent it over an hour ago and nothing showed up.

I am trying to tweak my WSJTX setup.  What is the recommended shift for the
K3S while running WSJTX?  I have the 2.8 khz SSB filter installed.  I am
using a width of 4 khz and using the radio in split mode.


73,
Tom - KQ5S
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to rmcg...@blomand.net




__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3 'SHIFT' not functional

[Nick Kennedy]

You are quite right, Vic. It amazes me that I didn't know that since I've 
used QRQ from day 1 and thought I used SHIFT as well.


Currently, it's a direct CONFIG menu entry CW QRQ and select ON or OFF.

73-

Nick, WA5BDU

-Original Message- 
From: Vic Rosenthal

Sent: Wednesday, June 22, 2016 12:54 PM
To: Nick Kennedy
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 'SHIFT' not functional

Check to see if QRQ mode is set. It locks out the shift function. If there 
is a little plus sign on the right side of the display in CW mode then 
that's it.
To turn it off, go to the CONFIG menu, CW WEIGHT and tap one of the number 
keys. I don't recall which, but you can find it in the manual.


Vic 4X6GP

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3 'SHIFT' not functional

[Vic Rosenthal]

Check to see if QRQ mode is set. It locks out the shift function. If there is a 
little plus sign on the right side of the display in CW mode then that's it.
To turn it off, go to the CONFIG menu, CW WEIGHT and tap one of the number 
keys. I don't recall which, but you can find it in the manual.

Vic 4X6GP 

> On 22 Jun 2016, at 17:39, Nick Kennedy  wrote:
> 
> Hi All,
> 
> My K3’s ‘SHIFT’ control no longer shifts. It stays at the CW pitch frequency 
> I’ve dialed up as indicated by “FC *0.44”, for example, when I turn the knob.
> 
> I had been setting up the rig for Field Day (taking out macros, etc.) when 
> this occurred. 
> 
> This is happening in the CW mode. In fact, I just verified that SHIFT works 
> normally in SSB and AM modes. The WIDTH control works normally as well.
> 
> Searching the manual, it seems that using XFIL can disable SHIFT.  Maybe I 
> accidentally hit XFIL.  But if I did, how do I go back to normal?  When I 
> rotate the WIDTH control, my filters are sequenced in and out as expected.
> 
> No CAT is currently connected.
> 
> At least it’s not fatal, but it would be nice to get the function back before 
> Saturday.
> 
> 73/TU,
> 
> Nick, WA5BDU
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to k2vco@gmail.com
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3 'SHIFT' not functional

[Clay Autery]

While you are on a band/mode/etc where the shift pot isn't working... 
push and hold "shift", which is the "NORM" function which will reset
filtering to default...  This may fix it.  Just my SWAG.


On 6/22/2016 9:39 AM, Nick Kennedy wrote:
> Hi All,
>
> My K3’s ‘SHIFT’ control no longer shifts. It stays at the CW pitch frequency 
> I’ve dialed up as indicated by “FC *0.44”, for example, when I turn the knob.
>
> I had been setting up the rig for Field Day (taking out macros, etc.) when 
> this occurred. 
>
> This is happening in the CW mode. In fact, I just verified that SHIFT works 
> normally in SSB and AM modes. The WIDTH control works normally as well.
>
> Searching the manual, it seems that using XFIL can disable SHIFT.  Maybe I 
> accidentally hit XFIL.  But if I did, how do I go back to normal?  When I 
> rotate the WIDTH control, my filters are sequenced in and out as expected.
>
> No CAT is currently connected.
>
> At least it’s not fatal, but it would be nice to get the function back before 
> Saturday.
>
> 73/TU,
>
> Nick, WA5BDU
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to caut...@montac.com

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] SSB shift frequency

[Guy Olinger K2AV]

I am assuming that FC refers to the "FC" in the VFO B display and you are
referencing filter center. There is no relationship between CW and SSB
centers. Nor is there a relationship between which filter is selected for
CW and for SSB. Bandwidth, filter and filter center are independently set
and saved per mode.

So you should not expect them to be the same unless you have individually
in both modes set them to the same values. These do not vary in the same
mode between bands.

You may be wanting to send CW in SSB mode, if so see K3 manual p. 55, "CW
in SSB modes".

73, Guy K2AV

On Tuesday, February 2, 2016, Paul VanOveren  wrote:

> Somehow, I have evidently changed something on my K3. When I change from CW
> to SSB, the FC is 1.75 instead of 1.50, so I have to move it to the left to
> get it back to 1.50. How do I get it set to 1.50 and stay there on all
> bands.  I cant tell if it is band specific or not.
>
> NF8J
> Paul
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to k2av@gmail.com
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3 shift and lo/hi cut no longer working

[Chris Hallinan]

Yes, that was the issue.  Thanks, Wayne and all!
Still getting to know my new K3!

73,
Chris - K1AY

On Fri, Apr 3, 2015 at 8:27 PM, Wayne Burdick n...@elecraft.com wrote:

 Hi Chris,

 You probably turned on CW QRQ mode. See CONFIG:CW QRQ.

 73,
 Wayne
 N6KR

 On Apr 3, 2015, at 3:34 PM, Chris Hallinan challi...@gmail.com wrote:

  Hi folks,
 
  Somehow I managed to get my K3 into some state where the shift function
  doesn't shift, and I'm unable to select the alternate functions of the
  shift and width knobs to hi/lo cut.
 
  Mode CW, VFO-A, nothing unusual.  LEDs show Shift and Width functions
  enabled.
 
  When I rotate Shift, the vfo-b display simply shows FC *0.48 (my pitch,
 the
  center of the passband.)  It does not shift.  Width control works.  I've
  power cycled, still no joy.  No software connected, either. Pressing each
  button does nothing.  (Should go to alternate mode, ie lo/hi cut.  Long
  pressing shift does normalize.  It's only the functions associated with
 the
  shift knob.
 
  What gives?  What did I do wrong?
 
  Chris
  K1AY
 
  --
  Life is like Linux - it never stands still.
  __
  Elecraft mailing list
  Home: http://mailman.qth.net/mailman/listinfo/elecraft
  Help: http://mailman.qth.net/mmfaq.htm
  Post: mailto:Elecraft@mailman.qth.net
 
  This list hosted by: http://www.qsl.net
  Please help support this email list: http://www.qsl.net/donate.html
  Message delivered to n...@elecraft.com




-- 
Life is like Linux - it never stands still.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] [K3] SHIFT/WIDTH in DATA A mode

[hb9brj]

I was able to narrow down the problem. It is related to SYNC DATA
(CONFIG:SYNC DT) which forces the same crystal filter to be used for both RX
and TX. As long as SYNC DATA is OFF everything works as expected.

If SYNC DATA is ON:
(1) Toggling between SHIFT/WIDTH and LO/HI CUT is inhibited
(2) SHIFT control is inactive
(3) LO CUT and HI CUT both act as WIDTH control

Am not sure if these limitations are a logical consequence of SYNC DATA ON
or an unwanted side-effect.

73, Markus HB9BRJ



--
View this message in context: 
http://elecraft.365791.n2.nabble.com/K3-SHIFT-WIDTH-in-DATA-A-mode-tp7601016p7601025.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] [K3] SHIFT/WIDTH in DATA A mode

[Wayne Burdick]

SYNC DATA provides a very short turnaround time by disabling operations that 
would require switching the synthesizer frequency between receive and transmit. 
(This is analogous to CW QRQ mode.) If you have the new synth installed 
(KSYN3A), the delays will be much shorter even with SYNC DATA turned off.

73,
Wayne
N6KR



On Apr 5, 2015, at 8:27 AM, hb9brj hb9...@gmail.com wrote:

 I was able to narrow down the problem. It is related to SYNC DATA
 (CONFIG:SYNC DT) which forces the same crystal filter to be used for both RX
 and TX. As long as SYNC DATA is OFF everything works as expected.
 
 If SYNC DATA is ON:
 (1) Toggling between SHIFT/WIDTH and LO/HI CUT is inhibited
 (2) SHIFT control is inactive
 (3) LO CUT and HI CUT both act as WIDTH control
 
 Am not sure if these limitations are a logical consequence of SYNC DATA ON
 or an unwanted side-effect.
 
 73, Markus HB9BRJ
 
 
 
 --
 View this message in context: 
 http://elecraft.365791.n2.nabble.com/K3-SHIFT-WIDTH-in-DATA-A-mode-tp7601016p7601025.html
 Sent from the Elecraft mailing list archive at Nabble.com.
 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 Post: mailto:Elecraft@mailman.qth.net
 
 This list hosted by: http://www.qsl.net
 Please help support this email list: http://www.qsl.net/donate.html
 Message delivered to n...@elecraft.com

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3 shift and lo/hi cut no longer working

[Wayne Burdick]

Hi Chris,

You probably turned on CW QRQ mode. See CONFIG:CW QRQ.

73,
Wayne
N6KR

On Apr 3, 2015, at 3:34 PM, Chris Hallinan challi...@gmail.com wrote:

 Hi folks,
 
 Somehow I managed to get my K3 into some state where the shift function
 doesn't shift, and I'm unable to select the alternate functions of the
 shift and width knobs to hi/lo cut.
 
 Mode CW, VFO-A, nothing unusual.  LEDs show Shift and Width functions
 enabled.
 
 When I rotate Shift, the vfo-b display simply shows FC *0.48 (my pitch, the
 center of the passband.)  It does not shift.  Width control works.  I've
 power cycled, still no joy.  No software connected, either. Pressing each
 button does nothing.  (Should go to alternate mode, ie lo/hi cut.  Long
 pressing shift does normalize.  It's only the functions associated with the
 shift knob.
 
 What gives?  What did I do wrong?
 
 Chris
 K1AY
 
 -- 
 Life is like Linux - it never stands still.
 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 Post: mailto:Elecraft@mailman.qth.net
 
 This list hosted by: http://www.qsl.net
 Please help support this email list: http://www.qsl.net/donate.html
 Message delivered to n...@elecraft.com

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3 Shift and Width encoders sluggish

[Gary Gregory]

Bad decoders, Tin pins, audio/speaker issues, intermittant keypad
responses, RIT encoder issue etc have rendered my early K3 pretty useless.
Add a very expensive shipping cost to and from the factory prohibitive,
mine has now been set aside and earmarked for scrap.

Support at Elecraft is excellent and those folks work hard at helping
customers but a non-responsive factory let them down badly if you need to
discuss your concerns.

Gary
Vk1ZZ
K3, KX3, KPA500-FT, KAT500-FT,P3.
On 14/03/2015 3:57 AM, Roger D Johnson n...@roadrunner.com wrote:

 The 4 encoders to the left of the main tuning knob all have a notchy feel
 to them whereas the RIT encoder feels smooth. Is this normal? Are the
 newest encoders notchy or smooth? Is the displayed frequency supposed
 to change when the RIT knob is turned even when RIT is off?

 73, Roger


 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 Post: mailto:Elecraft@mailman.qth.net

 This list hosted by: http://www.qsl.net
 Please help support this email list: http://www.qsl.net/donate.html
 Message delivered to vk1zzg...@gmail.com

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3 Shift and Width encoders sluggish

[Roger D Johnson]

The 4 encoders to the left of the main tuning knob all have a notchy feel
to them whereas the RIT encoder feels smooth. Is this normal? Are the
newest encoders notchy or smooth? Is the displayed frequency supposed
to change when the RIT knob is turned even when RIT is off?

73, Roger


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3 Shift and Width encoders sluggish

[Wayne Burdick]

Gary Gregory vk1zzg...@gmail.com wrote:

 ...a very expensive shipping cost to and from the factory….

Gary,

We've been shipping the K3 since 2008. Things do wear out, sometimes, with 
products that get nearly continuous use (like K3s). We strive to locate and 
ship the best-quality parts we can that are compatible with the existing PC 
boards. And we do improve module designs as time permits.

That said, you seem to have an extreme case.

If you don't want to incur the cost of having us make these simple repairs or 
mods, perhaps you can find someone locally in VK--a PC or appliance repair 
shop, maybe even another ham with the needed tools. We can put together a 
package deal on all of the parts you think are required to bring your K3 back 
up to full health. I'll see to it that you're given pricing commensurate with 
your long history as a K3 owner.

73,
Wayne
N6KR



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3 Shift and Width encoders sluggish

[W0MU Mike Fatchett]

I think there was a bad batch of decoders or decoders that didn't 
perform as claimed.  I am not sure mine have ever worked right. Unless 
you have two radios to compare to one would never know and there was 
never anything sent out that said hey if your encoders are acting wonky 
you might have got some bad ones.


Similar pin issue with the power boards.  I am unclear why Elecraft 
using inferior parts all of sudden became my problem.


These are defects and while my K3's are no longer under warranty, the 
amount of defects and how they are handled will factor in to decision 
making on future radio purchases.  The decoder issue might have been a 
warranty issue if I knew to look for it.


Mike W0MU

On 3/13/2015 9:32 AM, bruce whitney via Elecraft wrote:

Perhaps Eric will clear this up but maybe my experience can
help with this issue.
The last time I sent one of my K3's back for some work - I
mentioned that those four encoders in that cluster had a noticeable and 
undesirable
'backlash' feel to them - could they do something about it?I was told by the 
Elecraft tech that they had supplied
several generations of those controls - I think - one was arbitrarily changed
by the supplier and another Elecraft changed suppliers, or part numbers - or
whatever. The bottom line being that not all encoders are alike. I had them
changed out for the latest generation which are just great. They were very
inexpensive - and very little labor - provided you already had the front cover
removed for other purposes.
I recommend the new controls and when I send my other K3
back in a few days for the new synthesizer, and a few other upgrades - I am
going to get the new controls on it as well.73, Bruce W8RA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to w...@w0mu.com


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3 Shift and Width encoders sluggish

[Chester Alderman]

About 756 years ago (actually last month -- it just seems like a long time
ago) I sold my K3 and am now waiting for a new one, however with that K3
(that I owned for 5 years), started having issues with Width and Shift
encoders. I finally discovered if I turned off QSK and QRQ, those problems
disappeared. So you might check the setting of QRQ and QSK to see if that
solves the responsiveness of those encoders.

73,
Tom - W4BQF


-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of David
Cole
Sent: Wednesday, March 11, 2015 11:30 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 Shift and Width encoders sluggish

I am having the same issue with the PWR, Width, and Shift encoders as
well...
--
Thanks and 73's,
For equipment, and software setups and reviews see:
www.nk7z.net
for MixW support see;
http://groups.yahoo.com/neo/groups/mixw/info
for Dopplergram information see:
http://groups.yahoo.com/neo/groups/dopplergram/info
for MM-SSTV see:
http://groups.yahoo.com/neo/groups/MM-SSTV/info


On Tue, 2015-03-10 at 22:23 -0600, W0MU Mike Fatchett wrote:
 They tend to be not very responsive.  The power and speed encoders work 
 much smoother.
 
 Could they be dirty or is this possibly a known issue?
 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to alderm...@windstream.net

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3 Shift and Width encoders sluggish

[David Cole]

I am having the same issue with the PWR, Width, and Shift encoders as
well...
-- 
Thanks and 73's,
For equipment, and software setups and reviews see:
www.nk7z.net
for MixW support see;
http://groups.yahoo.com/neo/groups/mixw/info
for Dopplergram information see:
http://groups.yahoo.com/neo/groups/dopplergram/info
for MM-SSTV see:
http://groups.yahoo.com/neo/groups/MM-SSTV/info


On Tue, 2015-03-10 at 22:23 -0600, W0MU Mike Fatchett wrote:
 They tend to be not very responsive.  The power and speed encoders work 
 much smoother.
 
 Could they be dirty or is this possibly a known issue?
 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3 (shift widt )

[Wayne Burdick]

Do you have CONFIG:CW QRQ = ON? QRQ mode disables certain features, including 
filter shifting.

73,
Wayne
N6KR



On Feb 27, 2015, at 11:02 PM, Viggo Magnus Nilsen la9...@online.no wrote:

 Hello Elecraft user's
 
 
 Problem or not ??  I cant adjust the SHIFT WIDTH pssband tune in CW mode., it 
 work ok in SSB., when trying adjustment the display info is : *FC 80, have 
 reloaded the Firmware, the width in the ''filter'' work ok., any idea ?
 
 
 73' Viggo  LA9NEA



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] Setting shift for different filters?

[Don Wilhelm]

Dave,

Yes, the default is 1500 Hz.  with a 2.8 kHz filter, that puts the low 
end at 200 Hz and the high end at 2900 Hz.

AND that is why you should be using the Hi-Cut, Lo-Cut on SSB instead of 
Shift and Width.

For good intelligibility, you need to have some content in the 300 Hz 
range, so set the Lo-Cut to 200, 250, or 300 depending on your desires 
and the QRM conditions.  Then change only the Hi-Cut to reduce the 
filter width - the width will change, cutting the highs and the filter 
center frequency will be automatically changed leaving the low frequency 
end unchanged.

You will find that you can use a filter as narrow as 1500 Hz and still 
maintain SSB intelligibility (for a male voice, a female voice may need 
a few more highs).  Using Width and Shift to accomplish the same thing 
is possible, but requires a lot more knob fiddling.

73,
Don W3FPR

On 2/29/2012 6:38 PM, David F. Reed wrote:
 I note that as expected, the center frequency of the bandpass of any
 given filter on SSB seems to be 1.5 KHz, whether its the 6 KHz filter,
 the 2.7 KHz filter or the 2.1 KHz filter.

 This seems to work out to be passing from 150 Hz to 2.85 KHz, right?
 So the 2.1 KHz filter (without using the shift control) passes 450 Hz to
 2.55 KHz, right?

 I note that if I shift the center of the filter down to 1.35 KHz, the
 voices are more intelligible...

 When I switch filters and get back to the 2.1 KHz filter, the shift is
 lost; is there a setting I can use to save that shift setting?

 Thanks  73 de W5SV, Dave
 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 Post: mailto:Elecraft@mailman.qth.net

 This list hosted by: http://www.qsl.net
 Please help support this email list: http://www.qsl.net/donate.html

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Setting shift for different filters?

[David F. Reed]

Don,

thanks for the reply.

 1. when I try using the Lo-Cut, it seems to be confined to 100 Hz
increments, so, 150, 250, 350, but no 200, 300, or 100 available; is
there a way to set that differently?
 2. I can accomplish the same thing either way if I understand what is
going on, but is there a way to preserve the setting?

Thanks again.

--Dave W5SV


On 2/29/12 7:18 PM, Don Wilhelm wrote:
 Dave,

 Yes, the default is 1500 Hz.  with a 2.8 kHz filter, that puts the low 
 end at 200 Hz and the high end at 2900 Hz.

 AND that is why you should be using the Hi-Cut, Lo-Cut on SSB instead 
 of Shift and Width.

 For good intelligibility, you need to have some content in the 300 Hz 
 range, so set the Lo-Cut to 200, 250, or 300 depending on your desires 
 and the QRM conditions.  Then change only the Hi-Cut to reduce the 
 filter width - the width will change, cutting the highs and the filter 
 center frequency will be automatically changed leaving the low 
 frequency end unchanged.

 You will find that you can use a filter as narrow as 1500 Hz and still 
 maintain SSB intelligibility (for a male voice, a female voice may 
 need a few more highs).  Using Width and Shift to accomplish the same 
 thing is possible, but requires a lot more knob fiddling.

 73,
 Don W3FPR

 On 2/29/2012 6:38 PM, David F. Reed wrote:
 I note that as expected, the center frequency of the bandpass of any
 given filter on SSB seems to be 1.5 KHz, whether its the 6 KHz filter,
 the 2.7 KHz filter or the 2.1 KHz filter.

 This seems to work out to be passing from 150 Hz to 2.85 KHz, right?
 So the 2.1 KHz filter (without using the shift control) passes 450 Hz to
 2.55 KHz, right?

 I note that if I shift the center of the filter down to 1.35 KHz, the
 voices are more intelligible...

 When I switch filters and get back to the 2.1 KHz filter, the shift is
 lost; is there a setting I can use to save that shift setting?

 Thanks  73 de W5SV, Dave
 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 Post: mailto:Elecraft@mailman.qth.net

 This list hosted by: http://www.qsl.net
 Please help support this email list: http://www.qsl.net/donate.html

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Setting shift for different filters?

[Sam Morgan]

hold SHIFT knob til you see - NORM -
if you turn the WIDTH knob to an odd number  2.5 2.7 2.9 3.1 etc

tap SHIFT or WIDTH knob so the LOW and HI leds comes on
if you turn the SHIFT or WIDTH knob
you will see  LO .05 .15 .25 etc

now again
hold SHIFT knob til you see - NORM -
this time turn knob WIDTH to any even number 2.4 2.6 2.8 etc

tap SHIFT or WIDTH knob so the LOW and HI leds comes on
if you turn the SHIFT or WIDTH knob
you will see  LO .10 .20 .30 etc


as for a way to keep a setting after you have found one you like

I use the I setting for a - NORM -  2.7   FC *1.50

I Hold the WIDTH knob to get to filter setting II
now this one I play with the LO and HI until I find a setting I like

now I can use I for normal wide easy listening on a clear band
and I change to II if I need a modifier  300 LO to 2.10 HI narrow setting

ymmv
GB  73
K5OAI
Sam Morgan

On 2/29/2012 8:16 PM, David F. Reed wrote:
 Don,

 thanks for the reply.

   1. when I try using the Lo-Cut, it seems to be confined to 100 Hz
  increments, so, 150, 250, 350, but no 200, 300, or 100 available; is
  there a way to set that differently?
   2. I can accomplish the same thing either way if I understand what is
  going on, but is there a way to preserve the setting?

 Thanks again.

 --Dave W5SV


 On 2/29/12 7:18 PM, Don Wilhelm wrote:
 Dave,

 Yes, the default is 1500 Hz.  with a 2.8 kHz filter, that puts the low
 end at 200 Hz and the high end at 2900 Hz.

 AND that is why you should be using the Hi-Cut, Lo-Cut on SSB instead
 of Shift and Width.

 For good intelligibility, you need to have some content in the 300 Hz
 range, so set the Lo-Cut to 200, 250, or 300 depending on your desires
 and the QRM conditions.  Then change only the Hi-Cut to reduce the
 filter width - the width will change, cutting the highs and the filter
 center frequency will be automatically changed leaving the low
 frequency end unchanged.

 You will find that you can use a filter as narrow as 1500 Hz and still
 maintain SSB intelligibility (for a male voice, a female voice may
 need a few more highs).  Using Width and Shift to accomplish the same
 thing is possible, but requires a lot more knob fiddling.

 73,
 Don W3FPR

 On 2/29/2012 6:38 PM, David F. Reed wrote:
 I note that as expected, the center frequency of the bandpass of any
 given filter on SSB seems to be 1.5 KHz, whether its the 6 KHz filter,
 the 2.7 KHz filter or the 2.1 KHz filter.

 This seems to work out to be passing from 150 Hz to 2.85 KHz, right?
 So the 2.1 KHz filter (without using the shift control) passes 450 Hz to
 2.55 KHz, right?

 I note that if I shift the center of the filter down to 1.35 KHz, the
 voices are more intelligible...

 When I switch filters and get back to the 2.1 KHz filter, the shift is
 lost; is there a setting I can use to save that shift setting?

 Thanks   73 de W5SV, Dave

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Setting shift for different filters?

[Don Wilhelm]

David,

OK, I have perhaps ignored the subtle points - in some cases, you will 
have 50 Hz rounding and in other cases, you will have 100 Hz rounding - 
that makes little difference.  50 Hz to a SSB low frequency response 
does not make much difference.


n 2/29/2012 9:16 PM, David F. Reed wrote:
 Don,

 thanks for the reply.

  1. when I try using the Lo-Cut, it seems to be confined to 100 Hz
 increments, so, 150, 250, 350, but no 200, 300, or 100 available;
 is there a way to set that differently?
  2. I can accomplish the same thing either way if I understand what is
 going on, but is there a way to preserve the setting?

 Thanks again.

 --Dave W5SV


 On 2/29/12 7:18 PM, Don Wilhelm wrote:
 Dave,

 Yes, the default is 1500 Hz.  with a 2.8 kHz filter, that puts the 
 low end at 200 Hz and the high end at 2900 Hz.

 AND that is why you should be using the Hi-Cut, Lo-Cut on SSB instead 
 of Shift and Width.

 For good intelligibility, you need to have some content in the 300 Hz 
 range, so set the Lo-Cut to 200, 250, or 300 depending on your 
 desires and the QRM conditions.  Then change only the Hi-Cut to 
 reduce the filter width - the width will change, cutting the highs 
 and the filter center frequency will be automatically changed leaving 
 the low frequency end unchanged.

 You will find that you can use a filter as narrow as 1500 Hz and 
 still maintain SSB intelligibility (for a male voice, a female voice 
 may need a few more highs).  Using Width and Shift to accomplish the 
 same thing is possible, but requires a lot more knob fiddling.

 73,
 Don W3FPR

 On 2/29/2012 6:38 PM, David F. Reed wrote:
 I note that as expected, the center frequency of the bandpass of any
 given filter on SSB seems to be 1.5 KHz, whether its the 6 KHz filter,
 the 2.7 KHz filter or the 2.1 KHz filter.

 This seems to work out to be passing from 150 Hz to 2.85 KHz, right?
 So the 2.1 KHz filter (without using the shift control) passes 450 
 Hz to
 2.55 KHz, right?

 I note that if I shift the center of the filter down to 1.35 KHz, the
 voices are more intelligible...

 When I switch filters and get back to the 2.1 KHz filter, the shift is
 lost; is there a setting I can use to save that shift setting?

 Thanks  73 de W5SV, Dave
 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 Post: mailto:Elecraft@mailman.qth.net

 This list hosted by: http://www.qsl.net
 Please help support this email list: http://www.qsl.net/donate.html

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Setting shift for different filters?

[Don Wilhelm]

Dave,

A 50 Hz difference will not make a significant difference in the 
received audio unless you have greater than average ears.
You can preserve the setting using the Norm I and Norm2 settings, but 
for the most part, I just use the Lo-Cut and Hi-Cut knobs to dial in 
what is best for the current situation at hand.

73,
Don W3FPR

On 2/29/2012 9:16 PM, David F. Reed wrote:
 Don,

 thanks for the reply.

  1. when I try using the Lo-Cut, it seems to be confined to 100 Hz
 increments, so, 150, 250, 350, but no 200, 300, or 100 available;
 is there a way to set that differently?
  2. I can accomplish the same thing either way if I understand what is
 going on, but is there a way to preserve the setting?

 Thanks again.

 --Dave W5SV


 On 2/29/12 7:18 PM, Don Wilhelm wrote:
 Dave,

 Yes, the default is 1500 Hz.  with a 2.8 kHz filter, that puts the 
 low end at 200 Hz and the high end at 2900 Hz.

 AND that is why you should be using the Hi-Cut, Lo-Cut on SSB instead 
 of Shift and Width.

 For good intelligibility, you need to have some content in the 300 Hz 
 range, so set the Lo-Cut to 200, 250, or 300 depending on your 
 desires and the QRM conditions.  Then change only the Hi-Cut to 
 reduce the filter width - the width will change, cutting the highs 
 and the filter center frequency will be automatically changed leaving 
 the low frequency end unchanged.

 You will find that you can use a filter as narrow as 1500 Hz and 
 still maintain SSB intelligibility (for a male voice, a female voice 
 may need a few more highs).  Using Width and Shift to accomplish the 
 same thing is possible, but requires a lot more knob fiddling.

 73,
 Don W3FPR

 On 2/29/2012 6:38 PM, David F. Reed wrote:
 I note that as expected, the center frequency of the bandpass of any
 given filter on SSB seems to be 1.5 KHz, whether its the 6 KHz filter,
 the 2.7 KHz filter or the 2.1 KHz filter.

 This seems to work out to be passing from 150 Hz to 2.85 KHz, right?
 So the 2.1 KHz filter (without using the shift control) passes 450 
 Hz to
 2.55 KHz, right?

 I note that if I shift the center of the filter down to 1.35 KHz, the
 voices are more intelligible...

 When I switch filters and get back to the 2.1 KHz filter, the shift is
 lost; is there a setting I can use to save that shift setting?

 Thanks  73 de W5SV, Dave

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Setting shift for different filters?

[David F. Reed]

Thanks Sam, that solves that part of my question.

73 de Dave, W5SV

On 2/29/12 8:48 PM, Sam Morgan wrote:
 hold SHIFT knob til you see- NORM -
 if you turn the WIDTH knob to an odd number  2.5 2.7 2.9 3.1 etc

 tap SHIFT or WIDTH knob so the LOW and HI leds comes on
 if you turn the SHIFT or WIDTH knob
 you will see  LO .05 .15 .25 etc

 now again
 hold SHIFT knob til you see- NORM -
 this time turn knob WIDTH to any even number 2.4 2.6 2.8 etc

 tap SHIFT or WIDTH knob so the LOW and HI leds comes on
 if you turn the SHIFT or WIDTH knob
 you will see  LO .10 .20 .30 etc


 as for a way to keep a setting after you have found one you like

 I use the I setting for a- NORM -   2.7   FC *1.50

 I Hold the WIDTH knob to get to filter setting II
 now this one I play with the LO and HI until I find a setting I like

 now I can use I for normal wide easy listening on a clear band
 and I change to II if I need a modifier  300 LO to 2.10 HI narrow setting

 ymmv
 GB  73
 K5OAI
 Sam Morgan
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Setting shift for different filters?

[David F. Reed]

Don,

thanks; my ears are worse than normal, not better, so not a problem, 
just ab observation.  And I finally got it worked out how to use the 
Norm settings, so all is well now.

It seems I am still learning my way around my K3, and will be for some 
time; it keeps amazing me at how versatile and how good a radio it is.

73 de Dave, W5SV

On 2/29/12 9:09 PM, Don Wilhelm wrote:
 Dave,

 A 50 Hz difference will not make a significant difference in the 
 received audio unless you have greater than average ears.
 You can preserve the setting using the Norm I and Norm2 settings, but 
 for the most part, I just use the Lo-Cut and Hi-Cut knobs to dial in 
 what is best for the current situation at hand.

 73,
 Don W3FPR
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Shift/Width encoder pulse noise?

[James Sarte]

Odd... a few days have passed and not a single response to my query.  I did
some searching and noticed people have mentioned ticks or ticking when
rotating the width knob, but I'm not sure if what I've described can be
considered the same thing.

Anyway, does anyone care to comment or should I forget about it? Obviously
my question doesn't seem to be as important as others.

73 de James K2QI

On Sat, Dec 5, 2009 at 11:18 PM, James Sarte k2qi@gmail.com wrote:

 Greetings reflector fans,

 I noticed something odd tonight with my K3; something I've never noticed
 before.  I decided to do some SWL'ing around 40m and test out the relatively
 new Sync-AM feature.  All works well but whenever I turn the filter shift or
 width knobs now, I get a fairly loud encoder pulse noise.  This is similar
 to the VFO encoder hash on 5 MHz that I used to get prior to the
 hardware/software mod implementation.  This enoder pulse/hash sounds loudest
 when the received signal is strongest, or when using an antenna jack that
 has an antenna connected.  I can't seem to replicate the problem on 20m.
 Also, when switching over to the sub receiver, rotating the width/shift
 knobs don't have an effect unless I enter the B-set menu.

 The noise seems to be present in all modes (AM, CW, Data, USB, and LSB).

 This is with the latest beta firmware; 3.63.  I've just reverted back to
 3.42 to see if there's a change, and there isn't (perhaps the hash isn't as
 loud, but it's still there).

 I recently replaced my FP due to my original FP's encoders going bad.  I
 have a new FP that I replaced myself.  The encoders used in the new FP
 have a stiffer resistance to turning and don't have the detent feel any
 more.  I'm not sure if something could have happened when I replaced the
 panel, but I doubt it as everything else seems to work FB.

 Anyway, just thought I'd toss this out there.  Anyone have any
 suggestions?  Anyone notice anything similar?

 --
 73 de James K2QI




-- 
73 de James K2QI
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Shift/Width encoder pulse noise?

[Joe Planisky]

Hi James,

As far as the noise when you turn shift/width, yes, I hear it too.  I  
assume it's the result of changing the DSP filter parameters.  If done  
while it's processing a strong signal it seems there's bound to be  
some artifacts.  I don't know if anything can be done to quiet them.   
I personally don't consider it a problem, but others might object to it.

As for the shift/width not altering the sub-RX settings unless you're  
in B-set, I think that's normal unless you're in diversity mode.

As for the different feel of the encoders, I can't comment.  Haven't  
had to replace mine.

73
--
Joe KB8AP


On Dec 7, 2009, at 4:54 PM, James Sarte wrote:


 On Sat, Dec 5, 2009 at 11:18 PM, James Sarte k2qi@gmail.com  
 wrote:

 whenever I turn the filter shift or
 width knobs now, I get a fairly loud encoder pulse noise.

[snip]

 Also, when switching over to the sub receiver, rotating the width/ 
 shift
 knobs don't have an effect unless I enter the B-set menu.


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Shift/Width encoder pulse noise?

[James Sarte]

Hi Joe,

Thanks for the reply.  I don't think it's much of an issue either.  Only
reason I asked is I recently replaced front panels.  I didn't know if I
screwed something up during the transplant.  I do not recall hearing the
same ticking/pulse noise with the previous hardware.  Good to know I'm in
the clear.

73 de James K2QI


-Original Message-
From: Joe Planisky [mailto:jp...@jeffnet.org] 
Sent: Monday, December 07, 2009 8:26 PM
To: James Sarte
Cc: Elecraft
Subject: Re: [Elecraft] K3: Shift/Width encoder pulse noise?

Hi James,

As far as the noise when you turn shift/width, yes, I hear it too.  I  
assume it's the result of changing the DSP filter parameters.  If done  
while it's processing a strong signal it seems there's bound to be  
some artifacts.  I don't know if anything can be done to quiet them.   
I personally don't consider it a problem, but others might object to it.

As for the shift/width not altering the sub-RX settings unless you're  
in B-set, I think that's normal unless you're in diversity mode.

As for the different feel of the encoders, I can't comment.  Haven't  
had to replace mine.

73
--
Joe KB8AP



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3 Shift

[Greg - AB7R]

Hi Ken.  You can save two unique filter setups using the NORM knob.

1.  First, hold NORM to clear any shift to give you a good starting point.
2.  Now set desired WIDTH and SHIFT the FC to where you want it.
3.  Now do a LONG HOLD of the NORM knob till you see SAVE.  Rotate the knob 
while you 
have it pressed to the left to save your custome filter to setting 1. 
4.  Do the same process and rotate to the knob to the RIGHT to save setting 2.

I do this for SSTV and PSK.  Its a quick and easy way to recall a custome 
filter for 
digital modes.

Also, If you use DXLabs (and I believe others can do this as well but its very 
easy in 
DXL) you can enter CAT commands by mode.  So when I use WinWarbler and select 
PSK it 
automatically sets the shift and the BW, and power output to what I want.  No 
need to go 
to the radio to make any changes.  It just happens.

Hope this helps!

-
73,
Greg - AB7R
Whidbey Island WA
NA-065


On Thu Aug 27 10:51 , Ken Roberson  sent:

Hello All,

I built S/N 1354 from a kit , with FW 3.25 , I have
installed most of the mods.
I operate digi modes some of the time and I need to
set the shift to 1.25 instead of 1.50 to be centered
in the IF strip. It's been this way ever since I built
it. I'm not sure what I have setup wrong .
All filters are 8 pole .
With the new shift steps set to 10 hz the shift control
knob needs to be set all the way to the left ( 1.28 )
to be centered.

Also on 160 M when I rotate the RIT knob fast to change
the frequency I have some kind of image, Not sure what
this is ??

Thanks for your help
73 Ken K5DNL


  
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: Elecraft@mailman.qth.net','','','')Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Shift is at *61, not where it was before

[Brian Pepperdine]

I have noticed what I think is small but inexplicable change in my K3 shift.

Up until a few weeks ago (when I had some other odd issue with the sidetone 
going to zero hz, thus the crystal filter not seeming to work...)
my shift centre frequency was 60.
That is, that is where I think the normal is and was demarcated by an asterisk, 
hence it read *60, and then 55, 50, 45 etc going down, and then when going back 
up the 60 had the *60 marker.

Now the marker is *61. Things still go down and up in 5 hz increments when 
shifting but the default/normal marked is *61.

Why is this? What happened? I don't really discern much diffence (being doing 
contacts in cw with no problem) ..
but the mystery of how this changed and how to change it back (simply to be 
back to 5 hz steps...?) is pestering me.

And yes, my tired eyes don't see much of anything on this in the manuals. But 
then again my wife has to find my jam for breakfast.

tnx
Brien Pepperdine
VE3VAW
Toronto
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Shift is at *61, not where it was before

[Ken K3IU]

You probably inadvertently set your PITCH to 610. Try resetting it to 
600 and see if that solves your problem.

73, Ken K3IU

Brian Pepperdine wrote:

 I have noticed what I think is small but inexplicable change in my K3 shift.

 Up until a few weeks ago (when I had some other odd issue with the sidetone 
 going to zero hz, thus the crystal filter not seeming to work...)
 my shift centre frequency was 60.
 That is, that is where I think the normal is and was demarcated by an 
 asterisk, hence it read *60, and then 55, 50, 45 etc going down, and then 
 when going back up the 60 had the *60 marker.

 Now the marker is *61. Things still go down and up in 5 hz increments when 
 shifting but the default/normal marked is *61.

 Why is this? What happened? I don't really discern much diffence (being doing 
 contacts in cw with no problem) ..
 but the mystery of how this changed and how to change it back (simply to be 
 back to 5 hz steps...?) is pestering me.

 And yes, my tired eyes don't see much of anything on this in the manuals. But 
 then again my wife has to find my jam for breakfast.

 tnx
 Brien Pepperdine
 VE3VAW
 Toronto
 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 Post: mailto:Elecraft@mailman.qth.net

 This list hosted by: http://www.qsl.net
 Please help support this email list: http://www.qsl.net/donate.html

   
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: shift granularity: suggestion

[Ignacy]

To me the current granularity with SHIFT/WIDTH  (50 Hz) is fine.  With LO/HI
it is 100Hz, which is too high for LO. Also, LO often changes from 0.00 to
0.20 in one step, and taking it to 0.10 takes an extra step. Seems like a
bug.
Ignacy 




DOUGLAS ZWIEBEL wrote:
 
 Wayne said,
 We're planning to improve SHIFT granularity (etc.) in a future firmware
 release.
 
 I hope that this will be an added option in the CONFIG. menu.  I like
 it the way it is now (fast)...at least for cw.  I am really not
 looking forward to having to spin that tiny knob to move in 10hz
 steps.
 
 de Doug KR2Q
 ___
 Elecraft mailing list
 Post to: Elecraft@mailman.qth.net
 You must be a subscriber to post to the list.
 Subscriber Info (Addr. Change, sub, unsub etc.):
  http://mailman.qth.net/mailman/listinfo/elecraft
 
 Help: http://mailman.qth.net/subscribers.htm
 Elecraft web page: http://www.elecraft.com
 
 

-- 
View this message in context: 
http://n2.nabble.com/K3%3A-shift-granularity%3A-suggestion-tp2229337p2232275.html
Sent from the Elecraft mailing list archive at Nabble.com.

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] K3: Shift behaviour

[Ken K3IU]

I can not duplicate this on #202 with the latest firmware. It stops at 
FC=0.10 even if I keep rotating the knob anti-clockwise.

73,
Ken K3IU

Alexandr Kobranov wrote:

Hello friends,
want to know if i missed something:

- when on CW mode turning SHIFT to low-end it is going to 0.00 and 
then jump to 2.7 and radio is off (no signal like I/F switched off).
It is for BANDWIDTH 2.8kHz and the same for 0.05kHz so bandwidth 
independent.

On SSB mode SHIFT is going to 0.4 and stop here, no jump to 2.7.
Latest F/W installed.
There should be some limits based on PITCH settings and bandwith or not?
Tried to look in wiki and nothing about this there.

http://www.zerobeat.net/mediawiki/index.php/Firmware_anomalies_that_are_considered_normal 



Maybe it is known, maybe not, maybe it is not normal, maybe yes...
Any comments?

73!
L. -dst-
K3/10 #272
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft   
Help: http://mailman.qth.net/subscribers.htm

Elecraft web page: http://www.elecraft.com


___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] K3: Shift behaviour

[Alexandr Kobranov]

Ok Ken,
thanks,

will go through later - maybe there are some other params to check.
And reload FW :-)

Thanks for now,
73!
L. -dst-
K3/10 #727


Ken K3IU napsal(a):
I can not duplicate this on #202 with the latest firmware. It stops at 
FC=0.10 even if I keep rotating the knob anti-clockwise.

73,
Ken K3IU

Alexandr Kobranov wrote:

Hello friends,
want to know if i missed something:

- when on CW mode turning SHIFT to low-end it is going to 0.00 and 
then jump to 2.7 and radio is off (no signal like I/F switched off).
It is for BANDWIDTH 2.8kHz and the same for 0.05kHz so bandwidth 
independent.

On SSB mode SHIFT is going to 0.4 and stop here, no jump to 2.7.
Latest F/W installed.
There should be some limits based on PITCH settings and bandwith or not?
Tried to look in wiki and nothing about this there.

http://www.zerobeat.net/mediawiki/index.php/Firmware_anomalies_that_are_considered_normal 



Maybe it is known, maybe not, maybe it is not normal, maybe yes...
Any comments?

73!
L. -dst-
K3/10 #272
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft   Help: 
http://mailman.qth.net/subscribers.htm

Elecraft web page: http://www.elecraft.com




___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] K3: Shift behaviour

[David Pratt]

In a recent message, Alexandr Kobranov [EMAIL PROTECTED] wrote ...

want to know if i missed something:

- when on CW mode turning SHIFT to low-end it is going to 0.00 and then 
jump to 2.7 and radio is off


No, you are not missing anything, L., I am getting exactly the same as 
you in CW mode only.  I have reported it to [EMAIL PROTECTED] but 
have not had an acknowledgement.


73
--
David G4DMP
Leeds, England, UK
--

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] Frequency Shift

[Don Wilhelm]

Dave,

A BFO shift of up to 20 Hz is to be expected. 
If you have 100 Hz shifts, then you need to run CAL PLL again - using 
Spectrogram if possible.  Note that you should use a broadband noise 
source or band noise (with the preamp on) with no signals present.  
Attempting to set the BFOs with a signal present in the passband will 
result in frustration.


See my article on K2 Dial Calibration at my website www.qsl.net/w3fpr 
for additional information.


73,
Don W3FPR

David Robertson wrote:

Hi All,

I am the owner of 2 K2s, one a K2-100 and the other a qrp model. I built one of 
the rigs myself but completely aligned both rigs.

My question.
What can I do to prevent slight frequency shifts when changing filter settings?
Both rigs exhibit this problem. The shift is only about 100 hz at the most but 
I don't think this should happen.

Other then the small shifting problem the rigs work perfectly.

I know there has been solutions posted on this forum in the past but I seem to 
not have the ability to search for them.

I am using the spectrograph program and following the procedure that 
accompanied it when downloaded.

I must be doing something wrong. It must not be the radios as both exhibit the 
frequency shift when changing filter bandwidths.
Any help or advise would be appreciated.

  

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] Frequency Shift

[Don Wilhelm]

Tom Hammond caught my 'too quick response'  I should have typed CAL FIL 
below - not CAL PLL.


Sorry all and thanks to Tom for noticing.

73,
Don W3FPR

Don Wilhelm wrote:

Dave,

A BFO shift of up to 20 Hz is to be expected. If you have 100 Hz 
shifts, then you need to run CAL PLL again - using Spectrogram if 
possible.  Note that you should use a broadband noise source or band 
noise (with the preamp on) with no signals present.  Attempting to set 
the BFOs with a signal present in the passband will result in 
frustration.


See my article on K2 Dial Calibration at my website www.qsl.net/w3fpr 
for additional information.


73,
Don W3FPR

David Robertson wrote:

Hi All,

I am the owner of 2 K2s, one a K2-100 and the other a qrp model. I 
built one of the rigs myself but completely aligned both rigs.


My question.
What can I do to prevent slight frequency shifts when changing filter 
settings?
Both rigs exhibit this problem. The shift is only about 100 hz at the 
most but I don't think this should happen.


Other then the small shifting problem the rigs work perfectly.

I know there has been solutions posted on this forum in the past but 
I seem to not have the ability to search for them.


I am using the spectrograph program and following the procedure that 
accompanied it when downloaded.


I must be doing something wrong. It must not be the radios as both 
exhibit the frequency shift when changing filter bandwidths.

Any help or advise would be appreciated.

  



___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] IF shift

[Don Wilhelm]

Brett,

Yes, the Kenwood TS-820 was a single conversion transceiver that 
implemented IF shift.


To have IF shift in a single conversion receiver it is necessary to 
change both the VFO and BFO together in synch (and in the proper 
direction).  I believe it could have been done in the K2 microprocessor 
with enough memory space to accomplish that feat.  The K2 microprocessor 
has been short on available memory space for its entire lifetime.


73,
Don W3FPR

VR2BrettGraham wrote:

No, this is not an LDE - I simply missed sending it
originally.

In the meantime, I would have sworn the TS-820 my
father had did have an IF shift knob, turning that knob
caused it to behave like the radio had IF shift  this IF
shift functionality worked on all bands.

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] IF shift

[Geoffrey Mackenzie-Kennedy]

Morning Dale,

Passband Tuning can be incorporated into a single conversion receiver which 
uses a product detector. The method used in most commercial receivers for 
amateur use (putting aside DSP) is to have two IF filters in cascade along with 
mixers. By varying the injection frequencies to these mixers the passband of 
one filter can be made to 'slide over' the passband of the second filter thus 
changing the overall IF bandwidth. The input and output signal frequencies are 
sometimes kept to be the same, sometimes not. It is desireable to do this early 
on in the receiver chain, but it has been achieved in an outboard addition 
using audio input.

If you view a single conversion receiver which uses a product detector as a 
dual conversion receiver with the second IF being at audio, then you will see 
the makings for Passband Tuning and IF Shift are there.  The second IF filter 
required for Passband Tuning would be a good audio filter with steep skirts, 
although audio DSP might help here if its intermod performance is good. Please 
understand that I am risking some oversimplifications for the sake of Reflector 
bandwidth.

The problem with implementing anything extra into the K2 which involves tight 
control over the LO (VCO) and BFO frequencies is, I understand, the firmware. 
This could be the deciding factor.

73,
Geoff
GM4ESD  


Dale WC7S wrote on Friday, February 09, 2007 at 12:21 AM:

I would like to have a way to adopt a circuit for passband tuning, similar to 
what was in the Drake R4B or in the Icom 761.
What would be involved to incorporate something in that area? Is it a non-item, 
from the view of single conversion?
Thanks,
Dale 

--...   ...--
 Dale - WC7S in Wy
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] IF shift

[VR2BrettGraham]

N7XY queried:


One of the strengths of the K2 is its single-conversion design. That is, in
part, responsible for the extremely good specifications the receiver enjoys.
However, i.f. shift such as other rigs often feature require a
multiple-conversion design with all the issues that come with additional
mixers, oscillators and complexity. 

Well, I'm not sure this is totally true.  Before I got my first K2, I used a
Kenwood TS-180S which had a very nice IF shift feature.  It was also a
single conversion radio, with an IF of about 8.3 MHz.  I loaned the manual
to Eric and Wayne so they could see how it was done.

Sure wish there was a way to implement it in the K2.


TS-820S is another example of single conversion with IF shift.

You can do with K2, but bit too granular with current front panel
interface.  I believe it is even mentioned in the manual.

Making a knob into interface for IF shift is entirely possible,
since knobs are already used as interface to change
frequencies of stuff inside.

Firmware says no (apologies to Little Britain ;^)

Saying it can't be done  not appreciating what IF shift
is good for probably helps keep it that way.  ;^(

73  HLNY, VR2BrettGraham

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] IF shift

[Bob Nielsen]

Brett, that quote was from N6WG, not me.

73,
Bob, N7XY

On Feb 9, 2007, at 3:57 PM, VR2BrettGraham wrote:


N7XY queried:

One of the strengths of the K2 is its single-conversion design.  
That is, in
part, responsible for the extremely good specifications the  
receiver enjoys.

However, i.f. shift such as other rigs often feature require a
multiple-conversion design with all the issues that come with  
additional

mixers, oscillators and complexity. 

Well, I'm not sure this is totally true.  Before I got my first  
K2, I used a
Kenwood TS-180S which had a very nice IF shift feature.  It was  
also a
single conversion radio, with an IF of about 8.3 MHz.  I loaned  
the manual

to Eric and Wayne so they could see how it was done.

Sure wish there was a way to implement it in the K2.


TS-820S is another example of single conversion with IF shift.

You can do with K2, but bit too granular with current front panel
interface.  I believe it is even mentioned in the manual.

Making a knob into interface for IF shift is entirely possible,
since knobs are already used as interface to change
frequencies of stuff inside.

Firmware says no (apologies to Little Britain ;^)

Saying it can't be done  not appreciating what IF shift
is good for probably helps keep it that way.  ;^(

73  HLNY, VR2BrettGraham

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com



___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] IF shift--Don't Forget CW-Rev.

[Jeff]

Jeff and gang,

If you're working CW, don't forget about the CW-Reverse feature of the K2.
This feature accomplishes the same thing as IF shift, although the degree of
passband frequency shift isn't adjustable in real time.

73  72,
Jeff
WB5GWB
Long Island, NY

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] IF shift

[David Wilburn]

In the article from the contester on the Elecraft site, N6 something, he 
setup the SSB filters to act a bit like an IF shift.  One filter to the 
left, one to the right, and one center.  Thought that was interesting.


David Wilburn
[EMAIL PROTECTED]
K4DGW



Jeff Kinzli wrote:

Hey friends, how hard would it be to implement something along the
lines of an IF shift, ala the TS830S IF shift? That's something I
really like about my 830 and it seems like it would be a nice addition
to the K2.

Along the same lines, would it be feasible to have an outboard S-meter 
needle?


I guess I'm somewhat old fashioned :)

I do have the DSP module in my K2, and I guess I could achieve similar
results with that, yes? It's just that it's not a simple knob to
turn...

Thanks for any thoughts,

Jeff
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft   
Help: http://mailman.qth.net/subscribers.htm

Elecraft web page: http://www.elecraft.com


___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] IF shift

[Geoffrey Mackenzie-Kennedy]

David Wilburn wrote:

In the article from the contester on the Elecraft site, N6 something, he 
setup the SSB filters to act a bit like an IF shift.  One filter to the 
left, one to the right, and one center.  Thought that was interesting.



--

Very interesting.  I would guess that the result would be rather like two 
dimensional binaural reception if I understand left, right and center 
correctly. Did the article appear on this Reflector?


73,
Geoff
GM4ESD 




___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] IF shift

[David Wilburn]

This article had a big impact on my choice of the rig.  It was written 
from the user's point of view, and with extensive hands on experience.


http://www.elecraft.com/TechNotes/ncjk2100.pdf

David Wilburn
[EMAIL PROTECTED]
K4DGW



Geoffrey Mackenzie-Kennedy wrote:

David Wilburn wrote:

In the article from the contester on the Elecraft site, N6 something, 
he setup the SSB filters to act a bit like an IF shift.  One filter to 
the left, one to the right, and one center.  Thought that was 
interesting.



--

Very interesting.  I would guess that the result would be rather like 
two dimensional binaural reception if I understand left, right and 
center correctly. Did the article appear on this Reflector?


73,
Geoff
GM4ESD


___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft   
Help: http://mailman.qth.net/subscribers.htm

Elecraft web page: http://www.elecraft.com


___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] IF shift

[Bob Tellefsen]

Hi Ron

One of the strengths of the K2 is its single-conversion design. That is, in
part, responsible for the extremely good specifications the receiver enjoys.
However, i.f. shift such as other rigs often feature require a
multiple-conversion design with all the issues that come with additional
mixers, oscillators and complexity. 

Well, I'm not sure this is totally true.  Before I got my first K2, I used a
Kenwood TS-180S which had a very nice IF shift feature.  It was also a
single conversion radio, with an IF of about 8.3 MHz.  I loaned the manual
to Eric and Wayne so they could see how it was done.

Sure wish there was a way to implement it in the K2.
73, Bob N6WG
The Little Station with Attitude



___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] IF shift

[Geoffrey Mackenzie-Kennedy]

Bob,

With due respect to Ron, IF Shift is very easy to design into a single 
conversion receiver with a selective IF filter *provided* that the IF to 
Audio detector is some form of mixer with BFO injection, such as a product 
detector. It would probably be difficult to implement in the K2 not because 
of the required circuits, which are already there, but because of the 
firmware changes and related alignment problems. Also the control needs to 
be manual on the front panel, not via some menu.


73,
Geoff
GM4ESD



- Original Message - 
From: Bob Tellefsen [EMAIL PROTECTED]
To: Ron D'Eau Claire [EMAIL PROTECTED]; 'Jeff Kinzli' 
[EMAIL PROTECTED]; elecraft@mailman.qth.net

Sent: Thursday, February 08, 2007 4:40 PM
Subject: Re: [Elecraft] IF shift



Hi Ron

One of the strengths of the K2 is its single-conversion design. That is, 
in
part, responsible for the extremely good specifications the receiver 
enjoys.

However, i.f. shift such as other rigs often feature require a
multiple-conversion design with all the issues that come with additional
mixers, oscillators and complexity. 

Well, I'm not sure this is totally true.  Before I got my first K2, I used 
a

Kenwood TS-180S which had a very nice IF shift feature.  It was also a
single conversion radio, with an IF of about 8.3 MHz.  I loaned the manual
to Eric and Wayne so they could see how it was done.

Sure wish there was a way to implement it in the K2.
73, Bob N6WG
The Little Station with Attitude




___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

RE: [Elecraft] IF shift

[Ron D'Eau Claire]

Hi, Bob:

Yes, I have learned about that one since posting my comment! I tend to
forget that controllers today can do things that were not practical a few
years ago. Stuart (I think it was) pointed out that Art Collins actually
accomplished passband tuning by mechanically rotating the whole oscillator
assembly in one of his designs. 

All of these approaches add complexity. Complexity isn't necessarily bad,
but it's almost always more expensive either to design or to reproduce. 

Ron AC7AC

-Original Message-
Hi Ron

One of the strengths of the K2 is its single-conversion design. That is, in
part, responsible for the extremely good specifications the receiver enjoys.
However, i.f. shift such as other rigs often feature require a
multiple-conversion design with all the issues that come with additional
mixers, oscillators and complexity. 

Well, I'm not sure this is totally true.  Before I got my first K2, I used a
Kenwood TS-180S which had a very nice IF shift feature.  It was also a
single conversion radio, with an IF of about 8.3 MHz.  I loaned the manual
to Eric and Wayne so they could see how it was done.

Sure wish there was a way to implement it in the K2.
73, Bob N6WG
The Little Station with Attitude




___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] IF shift

[dave]

What is the point of IF shift?  What purpose does it serve?

Can't you do the same thing (or nearly so) with RIT?

My understanding of IF shift is that it allows you to move an 
interfering signal to the edge of the passband and attenuate it by doing 
so.  Seems that nearly the same result can be achieved with RIT.  Please 
correct me if I'm wrong on this.


73 de dave
ab9ca





Jeff Kinzli wrote:

Hey friends, how hard would it be to implement something along the
lines of an IF shift, ala the TS830S IF shift? That's something I
really like about my 830 and it seems like it would be a nice addition
to the K2.

Along the same lines, would it be feasible to have an outboard S-meter 
needle?


I guess I'm somewhat old fashioned :)

I do have the DSP module in my K2, and I guess I could achieve similar
results with that, yes? It's just that it's not a simple knob to
turn...

Thanks for any thoughts,

Jeff
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft   
Help: http://mailman.qth.net/subscribers.htm

Elecraft web page: http://www.elecraft.com




___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] IF shift

[Fred Jensen]

dave wrote:


What is the point of IF shift?  What purpose does it serve?

Can't you do the same thing (or nearly so) with RIT?

My understanding of IF shift is that it allows you to move an 
interfering signal to the edge of the passband and attenuate it by doing 
so.  Seems that nearly the same result can be achieved with RIT.  Please 
correct me if I'm wrong on this.


73 de dave
ab9ca


Timing is everything, I just logged on and there was your question.  IF 
shift [a la the TS830] moves the signals in the passband but does not 
change their pitch.  RIT moves them, but their pitch changes.  I sold my 
TS830 with IF shift, and I do miss it on the TS850 and K2 [although the 
K2 filters are so good, they tend to make up for it a little].  IF Shift 
[aka passband tuning from the Collins days] is cool on CW, and fantastic 
on RTTY.  Art Collins achieved it in the 75A4 by actually rotating the 
entire PTO assembly to keep the received pitch the same.  Now days it's 
done with magic.


73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2007 CQP Oct 6-7
- www.cqp.org
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

RE: [Elecraft] IF shift

[Ron D'Eau Claire]

One of the strengths of the K2 is its single-conversion design. That is, in
part, responsible for the extremely good specifications the receiver enjoys.
However, i.f. shift such as other rigs often feature require a
multiple-conversion design with all the issues that come with additional
mixers, oscillators and complexity. 

Even so, you can enjoy i.f. shift with the K2. It's not as flexible as the
multiple-conversion receivers use, but it does a FB job for me. Simply set
up for different i.f. bandpass positions on your four XFIL filter positions.
Remember that FL1 is always used for transmit, so that one must be set for
the best transmit audio quality; its position will be set, in part, by your
voice and the microphone you use. Even so, you'll probably find it's the
best general-purpose position for receive too. 

Now you can set the other filters to put the passband closer to or farther
from the carrier frequency as you desire. I have one position set closer to
the carrier frequency for SWL-ing, since that provides better bass response
on broadcast signals. You don't even have to use the OPT1 filter for the
other positions, if you want a tighter bandwidth. You can use
adjustable-bandwidth filters and crank one down tight for minimum bandpass
and set it according to your tastes. 

Now, when you encounter a  weak or QRM-ridden signal, you can select between
the four different filter and filter settings by pressing the XFIL button.

Ron AC7AC


-Original Message-

Hey friends, how hard would it be to implement something along the lines of
an IF shift, ala the TS830S IF shift? That's something I really like about
my 830 and it seems like it would be a nice addition to the K2.

Along the same lines, would it be feasible to have an outboard S-meter
needle?

I guess I'm somewhat old fashioned :)

I do have the DSP module in my K2, and I guess I could achieve similar
results with that, yes? It's just that it's not a simple knob to turn...

Thanks for any thoughts,

Jeff

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

RE: [Elecraft] IF shift

[Don Wilhelm]

Jeff,

IF shift is practical in multiconversion receivers, but the K2 is a single
conversion design (for fewer spurs, better dynamic range and better IMD).
To implement IF shift in a single conversion receiver would mean changing
the BFO in sync with the VFO - and that is not an easy feat.  It might be
practical in a one-band, one sideband receiver, but I don't think you would
want to sacrifice your multiband K2 just to have IF shift.  If you wish to
extend the principle to both sidebands or to additional bands, the scheme
gets complex.  Yes, a larger microprocessor could possibly do that, but
there are other requests for added functions when (and if) more storage
space is available - due to the complexity of IF shift in a single
conversion design, I would believe that is WAY down on Wayne's list of
'things to do'.

73,
Don W3FPR

 -Original Message-
 From: [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED] Behalf Of Jeff Kinzli
 Sent: Wednesday, February 07, 2007 6:50 PM
 To: elecraft@mailman.qth.net
 Subject: [Elecraft] IF shift


 Hey friends, how hard would it be to implement something along the
 lines of an IF shift, ala the TS830S IF shift? That's something I
 really like about my 830 and it seems like it would be a nice addition
 to the K2.

 Along the same lines, would it be feasible to have an outboard
 S-meter needle?

 I guess I'm somewhat old fashioned :)

 I do have the DSP module in my K2, and I guess I could achieve similar
 results with that, yes? It's just that it's not a simple knob to
 turn...

 Thanks for any thoughts,

 Jeff
 ___
 Elecraft mailing list
 Post to: Elecraft@mailman.qth.net
 You must be a subscriber to post to the list.
 Subscriber Info (Addr. Change, sub, unsub etc.):
  http://mailman.qth.net/mailman/listinfo/elecraft

 Help: http://mailman.qth.net/subscribers.htm
 Elecraft web page: http://www.elecraft.com
 --
 No virus found in this incoming message.
 Checked by AVG Free Edition.
 Version: 7.5.432 / Virus Database: 268.17.29/673 - Release Date:
 2/6/2007 5:52 PM

--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.432 / Virus Database: 268.17.29/673 - Release Date: 2/6/2007
5:52 PM

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] IF shift

[Geoffrey Mackenzie-Kennedy]

Dave and Jeff,

Dave you are right in saying that that both IF Shift and RIT (or even the 
main tuning knob) can be used to move an interfering signal out of the IF 
passband.  The advantage of IF Shift is that the 'beat note' from / of the 
signal you want does not change as you move the interfering signal, but when 
using RIT it will change just as it would when tuning the receiver. This 
means that if RIT is used to get rid of the interfering signal the audio 
beat note from the wanted signal could change enough to make it necessary to 
bypass any narrow audio filter used for CW reception, assuming that the 
receiver does not have a BFO whose frequency can be changed using a front 
panel control to maintain the beat note at a fixed value.


The required circuitry for IF Shift exists within the K2, but I imagine that 
the required changes to the firmware would determine whether or not the 
circuits could be used in this way.


Jeff, I think that an outboard S meter would be quite feasible if the K2's 
AGC does not drift.


73,

Geoff
GM4ESD



- Original Message - 
From: dave [EMAIL PROTECTED]

To: elecraft@mailman.qth.net
Sent: Thursday, February 08, 2007 12:07 AM
Subject: Re: [Elecraft] IF shift




What is the point of IF shift?  What purpose does it serve?

Can't you do the same thing (or nearly so) with RIT?

My understanding of IF shift is that it allows you to move an interfering 
signal to the edge of the passband and attenuate it by doing so.  Seems 
that nearly the same result can be achieved with RIT.  Please correct me 
if I'm wrong on this.


73 de dave
ab9ca




___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] I.F. shift thoughts

[Nick Waterman]

Wayne Burdick wrote:
 I think I need an understudy  :)
Leigh L Klotz, Jr. wrote:
 Now you've done it...

Everyone form an orderly queue   :-)

-- 
Nosey Nick Waterman, G7RZQ, K2 #5209.
use Std::Disclaimer;[EMAIL PROTECTED]
Please sponsor me! http://www.justgiving.com/noseynick
SCSI: System Can't See It
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] IF Shift, PB Tuning, and why neither completely eliminates QRM

[Ken Alexander]

--- wayne burdick [EMAIL PROTECTED] wrote:

 These terms are often used interchangeably. It's
 like the terms 
 biannual and semi-annual. One is supposed to
 mean every six 
 months and the other every other year, but some
 dictionaries list 
 them as synonyms, because you can make a case for
 either word having 
 either definition.

I'd love to go for a ride in a biplane, but you'll
never catch me going near a semi-plane!

Is that the same as the difference between flammable
and inflammable?  Boy, I found out about THAT one the
hard way! -- Woody from Cheers

73,

Ken Alexander
VE3HLS
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

RE: [Elecraft] IF Shift vs. Passband Tuning?

[jmeade]

The first time I saw the term passband tuning was on the Collins 75A4
receiver.  It shifted the BFO in one direction and the main PTO in the other
direction. The two were linked together with a mechanical strap. The idea
was that the pitch of the received signal would not change nor would the
actual selectivity bandwidth.  It was useful in both CW and SSB.  The
background pitch changed, but not the tone of the signal being received.

Then the Drake receivers came along, and did the same thing with the
variable L/C filters in the 50kHz IF.  A different approach, but the effect
was the same. The passband could be adjusted from one side of zero beat to
the other.

I thought that PBT a great feature.  Then I got a Kenwood TS-930S which had
VBT - Variable Bandwidth Tuning.  This feature allowed for the
adjustment of the difference between two edges of two filters - like opening
and closing a sliding door - the gap could be adjusted wider or narrower,
thus changing the selectivity.  The center frequency does not change. You
get continuously-variable selectivity this way and can respond to any band
condition easily. Now I am used to that feature and miss it on other rigs

73,  John W2XS.
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] I.F. shift thoughts

[jmeade]

The KX1 has a variable selectivity control. Narrowing up the bandpass is a
nice thing to be able to do continuously. Would that be easier to implement
than the IF Shift function?  I would like that feature on the K2.
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] IF Shift, PB Tuning, and why neither completely eliminates QRM

[Darrell Bellerive]

Could the SSB filter on the SSB Option board be made into a variable-passband 
filter rather than modifying the CW filter?


On August 8, 2006 11:18 pm, wayne burdick wrote:
 You could also modify the K2's variable-passband CW filter to optimize
 for wide bandwidths (SSB/DATA) rather than narrow. The same crystals
 are used both in the main (stock) filter and the KSB2. All you'd need
 to do is use smaller varactor diodes, preferably a matched set. You
 might be able to get a 1200-2400 Hz passband range with acceptably low
 ripple.

-- 
Darrell Bellerive
Amateur Radio Stations VA7TO and VE7CLA
Grand Forks, British Columbia, Canada
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] IF Shift, PB Tuning, and why neither completely eliminates QRM

[Geoffrey Mackenzie-Kennedy]

On Wednesday, August 09, 2006 at 7:18 AM Wayne Burdick wrote:

A much better approach to the Filter Shifing problem would be to
actually *narrow* the first crystal filter, protecting all subsequent
stages.

---

May I second Wayne's suggestion. In practice I have found that it is very
useful to be able to select roofing filters having different bandwidths, at
the moment down to 1.5 kHz, with good stopband attenuation. In spite of the
protection offered by *narrow* roofing filters, I believe that it is wise 
to

have all the stages before the second IF filter(s) capable of handling
strong signals, i.e. IIP3s of  +40dbm or better, to reduce the crud
generated by those unwanted signals that are very close in and get through 
a

narrow bandwidth roofing filter. One price is high current draw which is
probably not acceptable if the rig is to be used portable. The phase noise
of the LOs must also be suitably low to avoid compromising dynamic range
etc. Lastly the filters themselves must also be capable of handling strong
signals.

73,
Geoff
GM4ESD




___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Re: [Elecraft] I.F. shift thoughts

[Leigh L Klotz, Jr.]

Now you've done it...
On Tue, 8 Aug 2006 7:47 pm, wayne burdick wrote:

I think I need an understudy  :)

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft


Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

RE: [Elecraft] IF Shift vs. Passband Tuning?

[Don Wilhelm]

Jeff,

As far as I know, IF shift and Passbasnd Tuning are the same thing - just
different names for the advertizing hype folks to enjoy.

The major benefit of Passband tuning is that an interfering signal can be
moved off the edge of that reciever passband without changing the pitch of
the received signal.  IMHO, the same thing can be accomplished by reducing
the receiver bandwidth - it matters not whether it is CW or SSB.  If the
offending signal is on the low side of the wanted signal, it will be
necessary to reduce the low frequency content on the wanted signal - OTOH
with a voice signal, there will be a lot of information (intelligibility)
lost if the passband does not contain energy in the 300 to 500 Hz range, so
cutting the low frequency offending signal will result in a loss of
intelligibility for the wanted signal.  Cutting the high frequency end is
quite feasible, and can be accomplished easily by using the variable
bandwidth filter provided in the base K2.  I can set the normal IF filters
to a bandwidth of 1600 Hz and still maintain intelligibility for the male
voice (the female voice begins to loose intelligibility at a bandwidth of
1800 Hz or less).  Set the low frequency corner of the passband at 300 Hz
and accept whatever the high froequency end may be - this is not passband
tuning, but is reduction of the high frequency end of the received signal,
and I find it as useful (if not more useful) than true passband tuning.

I normall set the SSB IF filters to OP1 for the FL1 position, then 300 Hz
less for the FL2 position - note that the numbers displayed on the K2 may
not be a good indication of the actual bandwidth for wide filter settings,
use Spectrogram to determine the actual filter width.  With a 2300 (or 2400
Hz) OP1 bandwidth, I set Spectrogram markers at 300 and 2600 Hz then center
the passband between those markers.  Then FL2 thru FL4 are set to
progressively more narrow bandwidths - FL2 = 2200 Hz, FL3 = 1900 Hz, FL4 =
1600 Hz.  The important thing is to keep he low frequency corner of the
bandpass  at 300 Hz to maintain good intelligiblilty.  Be aware that the
filter bandwidths indicated by the K2 may be substantially different than
what is indicated by the K2 display - use Spectrogram to determine the
actual filter bandwidth - If the K2 indicates 2200 kHz for the filter
bandwidth, it may acually be 2600 Hz wide and quite ragged in the passband -
sett it for the actual width as observed o the Spectrogram display.

OK, all the above is valid for SSB - for CW, I find it sufficient to simply
switch to a more narrow IF filter - if you center the passband at your
chosen sidetine pitch, bothe the low and high requencies will be reduced by
switching to a more narrow filter.


73,
Don W3FPR


 -Original Message-
 Are IF shift and passband tuning (PBT) the same thing?  I assume
 that they produce the same effect.  I have a Ten-Tec Argonaut V
 that has PBT, but I have never used that feature, thus I don't
 miss it on my K2.  I guess I just don't grasp what PBT would do
 for me that I can't do with RIT and the variable width DSP filter
 of the Argonaut V.  However, I'm a CW op; someone commented that
 IF shift is more useful on SSB than on CW.  Why is that?

 Thanks, 73  72,
 Jeff
 WB5GWB
 Long Island, NY


___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

RE: [Elecraft] Frequency shift in old K2

[Don Wilhelm]

Tim,

That certainly sounds like a bad solder connection or an unsoldered one to me.
Look in the BFO area first if it effects the filter passband, otherwise the VCO 
area is another possible candidate for suspicion.  Yes, even in something that 
has been working for almost 6 years, an unsoldered connection can still be the 
source of a problem.

Use the schematic and parts placement diagrams in the manual to locate the 
questionable components.

73,
Don W3FPR
 

 -Original Message-

 
 For awhile, I've been experiencing a down shift of about 200 hertz, but
 rarely and randomly in my K2 serial 0063.  It's enough to change the
 characteristic tone in the receiver and degrades from the filter settings.
 Any suggestions as to where to start looking?  Doesn't seem to be
 temperature-dependent but I could be wrong.  And it, randomly, shifts back
 as well.  Thanks.
 
 Tim K5OI
 Ruidoso, NM
 

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com