Re: [Elecraft] Kx3, wsjtx, broadband noise

[Jim Brown]

On 2/2/2020 2:13 PM, Tox wrote:

Hoping someone has a suggestion for how I can work around some local QRM.


http://k9yc.com/KillingReceiveNoise.pdf
http://k9yc.com/KillingRXNoiseVisalia.pdf

73, Jim K9YC

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Re: [Elecraft] Kx3, wsjtx, broadband noise

[Tox]

In any case, doesn't sound like there's any particular Elecraft filtering
wizardry I can engage.

Given that they've repeatedly slipped K4 dates, now wondering if I should
cancel my K4D.

Thanks for the feedback, everyone.

Scott
AD6YT

On Sun, Feb 2, 2020, 9:50 PM Tox  wrote:

> Yeah, all bands.  Then suddenly clears, signals sprout all over the
> waterfall and are promptly silenced once more.
>
> On Sun, Feb 2, 2020, 9:44 PM Tox  wrote:
>
>> Hm. And as soon as I send that I check, and 15/30m has 15dB of odd
>> surging over a 1-2Hz cycle. Maybe it really it taking everything out
>>
>> On Sun, Feb 2, 2020, 9:40 PM Tox  wrote:
>>
>>> It is much like what I recall when the hydroponics shop was still in
>>> business a couple blocks away. But in that case the source was never on
>>> less than 15 min at a shot.
>>>
>>> Part of what is maddening about current is that duration is completely
>>> random, seeing blips during ft8 turnarounds, followed by blocks of 30 min
>>> solid hash, 5 min free, completely unpredictable. I can get ft8 cycles to
>>> complete *just enough* to not rage quit and shut the radio off.
>>>
>>> And 15/30 seem less affected than 20/40, which is Confusing. Since the
>>> whole band goes I wouldn't expect it to follow that sort of harmonic
>>> behavior.
>>>
>>>
>>>
>>> What would a 20m spark gap transmitter look like on modern gear?
>>>
>>> On Sun, Feb 2, 2020, 9:29 PM Don Wilhelm  wrote:
>>>
 Scott,

 It would appear as though you are receiving noise from somewhere.  Your
 steps have eliminated your house, but your neighbors may be the source.

 I don't have an easy answer, but I don't think it is in your KX3.  To
 test, does it occur if you connect a dummy load?  If not, it is coming
 in on your antenna.

 Filters and NR and NB are not likely to tackle it adequately.  You will
 have to locate the source and send a notice to the FCC for action.  You
 can use the KX3 portable with a short antenna to try to localize the
 source.

 Sounds like the interference from "grow lights" that have been reported
 in the past.  Are any of your neighbors starting gardening plants or
 growing pot under UV Grow Lights?

 73,
 Don W3FPR

 On 2/2/2020 5:13 PM, Tox wrote:
 > Hoping someone has a suggestion for how I can work around some local
 QRM.
 >
 > I have a kx3 with filters installed
 > I have wsjtx running.
 > I've recently added a px3 to see if it would help provide insight.
 >
 > I find intermittent broadband noise that desenses my receiver on
 multiple
 > bands. 1) It appears to either be On or Off, no visible fading.
 > (Transitions are <<1 second). Sometimes a little flickering but
 usually
 > extends for minutes to hours.
 > 2) When on, signals in waterfall completely disappear or are reduced
 to
 > just a couple nearby (loud) stations
 > 3) when on, it wipes out at least one whole band (usually 20m,
 sometimes
 > 40m as well).
 > 4) when on, the full 200khz slice in px3 goes green snow
 > 5) still happens if I throw breaker in my subpanel and am running off
 of
 > batteries
 > 6) with 30 min of fiddling, haven't been able to see it in a kiwisdr
 node
 > less than a mile away
 > 7) pskreporter still shows me to be getting out (to the extent I can)
 >
 > Broadband, no visible peaks, so not sure I could triangulate it by
 > wardriving with a Kerberos.
 >
 > Any suggestions?
 >

>>>
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Re: [Elecraft] Kx3, wsjtx, broadband noise

[Tox]

Yeah, all bands.  Then suddenly clears, signals sprout all over the
waterfall and are promptly silenced once more.

On Sun, Feb 2, 2020, 9:44 PM Tox  wrote:

> Hm. And as soon as I send that I check, and 15/30m has 15dB of odd surging
> over a 1-2Hz cycle. Maybe it really it taking everything out
>
> On Sun, Feb 2, 2020, 9:40 PM Tox  wrote:
>
>> It is much like what I recall when the hydroponics shop was still in
>> business a couple blocks away. But in that case the source was never on
>> less than 15 min at a shot.
>>
>> Part of what is maddening about current is that duration is completely
>> random, seeing blips during ft8 turnarounds, followed by blocks of 30 min
>> solid hash, 5 min free, completely unpredictable. I can get ft8 cycles to
>> complete *just enough* to not rage quit and shut the radio off.
>>
>> And 15/30 seem less affected than 20/40, which is Confusing. Since the
>> whole band goes I wouldn't expect it to follow that sort of harmonic
>> behavior.
>>
>>
>>
>> What would a 20m spark gap transmitter look like on modern gear?
>>
>> On Sun, Feb 2, 2020, 9:29 PM Don Wilhelm  wrote:
>>
>>> Scott,
>>>
>>> It would appear as though you are receiving noise from somewhere.  Your
>>> steps have eliminated your house, but your neighbors may be the source.
>>>
>>> I don't have an easy answer, but I don't think it is in your KX3.  To
>>> test, does it occur if you connect a dummy load?  If not, it is coming
>>> in on your antenna.
>>>
>>> Filters and NR and NB are not likely to tackle it adequately.  You will
>>> have to locate the source and send a notice to the FCC for action.  You
>>> can use the KX3 portable with a short antenna to try to localize the
>>> source.
>>>
>>> Sounds like the interference from "grow lights" that have been reported
>>> in the past.  Are any of your neighbors starting gardening plants or
>>> growing pot under UV Grow Lights?
>>>
>>> 73,
>>> Don W3FPR
>>>
>>> On 2/2/2020 5:13 PM, Tox wrote:
>>> > Hoping someone has a suggestion for how I can work around some local
>>> QRM.
>>> >
>>> > I have a kx3 with filters installed
>>> > I have wsjtx running.
>>> > I've recently added a px3 to see if it would help provide insight.
>>> >
>>> > I find intermittent broadband noise that desenses my receiver on
>>> multiple
>>> > bands. 1) It appears to either be On or Off, no visible fading.
>>> > (Transitions are <<1 second). Sometimes a little flickering but usually
>>> > extends for minutes to hours.
>>> > 2) When on, signals in waterfall completely disappear or are reduced to
>>> > just a couple nearby (loud) stations
>>> > 3) when on, it wipes out at least one whole band (usually 20m,
>>> sometimes
>>> > 40m as well).
>>> > 4) when on, the full 200khz slice in px3 goes green snow
>>> > 5) still happens if I throw breaker in my subpanel and am running off
>>> of
>>> > batteries
>>> > 6) with 30 min of fiddling, haven't been able to see it in a kiwisdr
>>> node
>>> > less than a mile away
>>> > 7) pskreporter still shows me to be getting out (to the extent I can)
>>> >
>>> > Broadband, no visible peaks, so not sure I could triangulate it by
>>> > wardriving with a Kerberos.
>>> >
>>> > Any suggestions?
>>> >
>>>
>>
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Re: [Elecraft] Kx3, wsjtx, broadband noise

[Tox]

Hm. And as soon as I send that I check, and 15/30m has 15dB of odd surging
over a 1-2Hz cycle. Maybe it really it taking everything out

On Sun, Feb 2, 2020, 9:40 PM Tox  wrote:

> It is much like what I recall when the hydroponics shop was still in
> business a couple blocks away. But in that case the source was never on
> less than 15 min at a shot.
>
> Part of what is maddening about current is that duration is completely
> random, seeing blips during ft8 turnarounds, followed by blocks of 30 min
> solid hash, 5 min free, completely unpredictable. I can get ft8 cycles to
> complete *just enough* to not rage quit and shut the radio off.
>
> And 15/30 seem less affected than 20/40, which is Confusing. Since the
> whole band goes I wouldn't expect it to follow that sort of harmonic
> behavior.
>
>
>
> What would a 20m spark gap transmitter look like on modern gear?
>
> On Sun, Feb 2, 2020, 9:29 PM Don Wilhelm  wrote:
>
>> Scott,
>>
>> It would appear as though you are receiving noise from somewhere.  Your
>> steps have eliminated your house, but your neighbors may be the source.
>>
>> I don't have an easy answer, but I don't think it is in your KX3.  To
>> test, does it occur if you connect a dummy load?  If not, it is coming
>> in on your antenna.
>>
>> Filters and NR and NB are not likely to tackle it adequately.  You will
>> have to locate the source and send a notice to the FCC for action.  You
>> can use the KX3 portable with a short antenna to try to localize the
>> source.
>>
>> Sounds like the interference from "grow lights" that have been reported
>> in the past.  Are any of your neighbors starting gardening plants or
>> growing pot under UV Grow Lights?
>>
>> 73,
>> Don W3FPR
>>
>> On 2/2/2020 5:13 PM, Tox wrote:
>> > Hoping someone has a suggestion for how I can work around some local
>> QRM.
>> >
>> > I have a kx3 with filters installed
>> > I have wsjtx running.
>> > I've recently added a px3 to see if it would help provide insight.
>> >
>> > I find intermittent broadband noise that desenses my receiver on
>> multiple
>> > bands. 1) It appears to either be On or Off, no visible fading.
>> > (Transitions are <<1 second). Sometimes a little flickering but usually
>> > extends for minutes to hours.
>> > 2) When on, signals in waterfall completely disappear or are reduced to
>> > just a couple nearby (loud) stations
>> > 3) when on, it wipes out at least one whole band (usually 20m, sometimes
>> > 40m as well).
>> > 4) when on, the full 200khz slice in px3 goes green snow
>> > 5) still happens if I throw breaker in my subpanel and am running off of
>> > batteries
>> > 6) with 30 min of fiddling, haven't been able to see it in a kiwisdr
>> node
>> > less than a mile away
>> > 7) pskreporter still shows me to be getting out (to the extent I can)
>> >
>> > Broadband, no visible peaks, so not sure I could triangulate it by
>> > wardriving with a Kerberos.
>> >
>> > Any suggestions?
>> >
>>
>
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Re: [Elecraft] Kx3, wsjtx, broadband noise

[Tox]

It is much like what I recall when the hydroponics shop was still in
business a couple blocks away. But in that case the source was never on
less than 15 min at a shot.

Part of what is maddening about current is that duration is completely
random, seeing blips during ft8 turnarounds, followed by blocks of 30 min
solid hash, 5 min free, completely unpredictable. I can get ft8 cycles to
complete *just enough* to not rage quit and shut the radio off.

And 15/30 seem less affected than 20/40, which is Confusing. Since the
whole band goes I wouldn't expect it to follow that sort of harmonic
behavior.



What would a 20m spark gap transmitter look like on modern gear?

On Sun, Feb 2, 2020, 9:29 PM Don Wilhelm  wrote:

> Scott,
>
> It would appear as though you are receiving noise from somewhere.  Your
> steps have eliminated your house, but your neighbors may be the source.
>
> I don't have an easy answer, but I don't think it is in your KX3.  To
> test, does it occur if you connect a dummy load?  If not, it is coming
> in on your antenna.
>
> Filters and NR and NB are not likely to tackle it adequately.  You will
> have to locate the source and send a notice to the FCC for action.  You
> can use the KX3 portable with a short antenna to try to localize the
> source.
>
> Sounds like the interference from "grow lights" that have been reported
> in the past.  Are any of your neighbors starting gardening plants or
> growing pot under UV Grow Lights?
>
> 73,
> Don W3FPR
>
> On 2/2/2020 5:13 PM, Tox wrote:
> > Hoping someone has a suggestion for how I can work around some local QRM.
> >
> > I have a kx3 with filters installed
> > I have wsjtx running.
> > I've recently added a px3 to see if it would help provide insight.
> >
> > I find intermittent broadband noise that desenses my receiver on multiple
> > bands. 1) It appears to either be On or Off, no visible fading.
> > (Transitions are <<1 second). Sometimes a little flickering but usually
> > extends for minutes to hours.
> > 2) When on, signals in waterfall completely disappear or are reduced to
> > just a couple nearby (loud) stations
> > 3) when on, it wipes out at least one whole band (usually 20m, sometimes
> > 40m as well).
> > 4) when on, the full 200khz slice in px3 goes green snow
> > 5) still happens if I throw breaker in my subpanel and am running off of
> > batteries
> > 6) with 30 min of fiddling, haven't been able to see it in a kiwisdr node
> > less than a mile away
> > 7) pskreporter still shows me to be getting out (to the extent I can)
> >
> > Broadband, no visible peaks, so not sure I could triangulate it by
> > wardriving with a Kerberos.
> >
> > Any suggestions?
> >
>
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Re: [Elecraft] Kx3, wsjtx, broadband noise

[Don Wilhelm]

Scott,

It would appear as though you are receiving noise from somewhere.  Your 
steps have eliminated your house, but your neighbors may be the source.


I don't have an easy answer, but I don't think it is in your KX3.  To 
test, does it occur if you connect a dummy load?  If not, it is coming 
in on your antenna.


Filters and NR and NB are not likely to tackle it adequately.  You will 
have to locate the source and send a notice to the FCC for action.  You 
can use the KX3 portable with a short antenna to try to localize the source.


Sounds like the interference from "grow lights" that have been reported 
in the past.  Are any of your neighbors starting gardening plants or 
growing pot under UV Grow Lights?


73,
Don W3FPR

On 2/2/2020 5:13 PM, Tox wrote:

Hoping someone has a suggestion for how I can work around some local QRM.

I have a kx3 with filters installed
I have wsjtx running.
I've recently added a px3 to see if it would help provide insight.

I find intermittent broadband noise that desenses my receiver on multiple
bands. 1) It appears to either be On or Off, no visible fading.
(Transitions are <<1 second). Sometimes a little flickering but usually
extends for minutes to hours.
2) When on, signals in waterfall completely disappear or are reduced to
just a couple nearby (loud) stations
3) when on, it wipes out at least one whole band (usually 20m, sometimes
40m as well).
4) when on, the full 200khz slice in px3 goes green snow
5) still happens if I throw breaker in my subpanel and am running off of
batteries
6) with 30 min of fiddling, haven't been able to see it in a kiwisdr node
less than a mile away
7) pskreporter still shows me to be getting out (to the extent I can)

Broadband, no visible peaks, so not sure I could triangulate it by
wardriving with a Kerberos.

Any suggestions?


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Re: [Elecraft] Kx3, wsjtx, broadband noise

[Jim Rhodes]

Well, it sounds like it is something outside your QTH. Unless you have some
solar charge controllers for off grid power, or some other possible noise
maker. Maybe go mobile in the neighborhood when the noise seems to be on
for a while. If you have a directional antenna you might be able to get a
vector that way.

On Sun, Feb 2, 2020 at 4:14 PM Tox  wrote:

> Hoping someone has a suggestion for how I can work around some local QRM.
>
> I have a kx3 with filters installed
> I have wsjtx running.
> I've recently added a px3 to see if it would help provide insight.
>
> I find intermittent broadband noise that desenses my receiver on multiple
> bands. 1) It appears to either be On or Off, no visible fading.
> (Transitions are <<1 second). Sometimes a little flickering but usually
> extends for minutes to hours.
> 2) When on, signals in waterfall completely disappear or are reduced to
> just a couple nearby (loud) stations
> 3) when on, it wipes out at least one whole band (usually 20m, sometimes
> 40m as well).
> 4) when on, the full 200khz slice in px3 goes green snow
> 5) still happens if I throw breaker in my subpanel and am running off of
> batteries
> 6) with 30 min of fiddling, haven't been able to see it in a kiwisdr node
> less than a mile away
> 7) pskreporter still shows me to be getting out (to the extent I can)
>
> Broadband, no visible peaks, so not sure I could triangulate it by
> wardriving with a Kerberos.
>
> Any suggestions?
>
> Is there a way/practice to maybe leverage the filters to increase rejection
> of the interference?
>
> Thanks in advance,
> Scott
> AD6YT
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>


-- 
Jim K0XU
j...@rhodesend.net
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Re: [Elecraft] FT8 Driver Issue

[Don Wilhelm]

Lee,

In addition to the MIC Gain and the WSJT POWER slider (misnamed because 
it is just another audio level control, you also have to deal with the 
computer soundcard audio level.  It should be set for Line Level instead 
of speaker if that is possible, and that is one of the 3 audio controls 
that you have to manipulate.


Go to my website www.w3fpr.com and scroll the left column to the last 
article and click to see the article dealing with this problem.


73,
Don W3FPR

On 2/2/2020 6:59 PM, Lee Murrah via Elecraft wrote:

I am running WSJT-X in FT8 mode on my K3S using the onboard sound card and USB 
cable and VOX for keying. My computer is a Mac running Catalina. The K3S manual 
recommends setting the drive at 4 or 5 bars to avoid distortion by the ALC.. 
When I use the audio output slider set the drive level, the display jumps from 
no bars to 6 bars, and vice versa, and nothing on between.  I have also tried 
using the MIC level and the POWER slider in FT8 with the same results.  The 
software id decoding fine. Can anyon suggest what the problem might be?


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Re: [Elecraft] [KX3] How to set up the KX3 as a Panadapter with almost any transceiver

[Adrian]

All resolved below, so please disregard sorry... I feel a bit lazy

for not trying a bit harder before my previous post. Of course adding a 
custom SWT44


cat command to macros and adding the button in layout turned out 
reasonably simple.


I switched to using HRD dde control with HDSDR instead of omni-rig cat 
control.



Adrian,   vk4tux


On 3/2/20 12:59 pm, vk4tux wrote:

Playing with my v5.24 HRD, it all works well with the KX3 under the K3
profile, apart from activating the ATU which doesnt work with ATU or Tune
buttons.

Has anyone modified the program cat control to do this if they could share
please, thankyou.

Adrian,   vk4tux


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Re: [Elecraft] FT8 Driver Issue

[Nr4c]

First cut the output from the computer by 1/3 to 1/2.  Now this will allow 
finer adjustment with the K3 controls. 

Sent from my iPhone
...nr4c. bill


> On Feb 2, 2020, at 7:24 PM, Bob McGraw K4TAX  wrote:
> 
> Go into the TX TEST mode and see if the issue still exist. If not, it’s an 
> RFI issue. If not, back the MIC (Line gain) down to zero and start up 
> watching the ALC  scale. The computer level may be overdriving the radio. If 
> so back the PWR slider on WSJT down. 
> 
> Bob, K4TAX
> 
> 
> Sent from my iPhone
> 
>> On Feb 2, 2020, at 6:13 PM, Lee Murrah via Elecraft 
>>  wrote:
>> 
>> I am running WSJT-X in FT8 mode on my K3S using the onboard sound card and 
>> USB cable and VOX for keying. My computer is a Mac running Catalina. The K3S 
>> manual recommends setting the drive at 4 or 5 bars to avoid distortion by 
>> the ALC.. When I use the audio output slider set the drive level, the 
>> display jumps from no bars to 6 bars, and vice versa, and nothing on 
>> between.  I have also tried using the MIC level and the POWER slider in FT8 
>> with the same results.  The software id decoding fine. Can anyon suggest 
>> what the problem might be?
>> 
>> KV5M
>> Lee
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> 
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[Elecraft] Elecraft CW Net Report

[kevinr]

Good Evening,

   Twenty meters had a little noise and mild QRN.  I had to move the 
net after a loud CQ started up on net frequency.  Guess they could not 
hear me.  Forty meters lasted longer than normal.  With the extra 
daylight I was able to work into Southern California. After I closed 
with W8OV I heard someone calling him.  I waited and then worked KO6WL 
at ESP levels.  It took a number of repetitions but I got the call one 
part at a time.  Even without an active sun signals were fair.  From now 
until the time change forty meters should work well for us with the 
longer days.


  On 14050.5 kHz before 2200z:

W0CZ - Ken - ND

NO8V - John - MI


  On 14050.75 kHz after 2200z due to QRM:

K6XK - Roy - IA

K4JPN - Steve - GA


  On 7047.75 kHz at z:

KG7V - Marv - WA

W0CZ - Ken - ND

K6XK - Roy - IA

K0DTJ - Brian - CA

KL7CW - Rick - AK

W8OV - Dave - TX

KO6WL - Howard - CA


I was able to work a few of you before each net which helped.  I did 
catch an F at the end of the first call up on 40 meters.  I tried 
calling WM5F, Dwight in Idaho, but the window had closed.


Happy Ground Hog's Day!

   73,  Kevin.  KD5ONS

-





Ultimately there will be nothing your friends can do for you,
putting you in the position of having to find more competent friends.

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Re: [Elecraft] [KX3] How to set up the KX3 as a Panadapter with almost any transceiver

[vk4tux]

Playing with my v5.24 HRD, it all works well with the KX3 under the K3
profile, apart from activating the ATU which doesnt work with ATU or Tune
buttons.

Has anyone modified the program cat control to do this if they could share
please, thankyou.

Adrian,   vk4tux



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Re: [Elecraft] FT8 Driver Issue

[stephen shearer]

YES,

I am using a KX3.   I use the "bar" on the right and set 20db of 
attenuation in the audio drive "chain".
Mike gain is now set at aprox 40, rather than 3-4 (one step makes a BIG 
step)...

I can set "ALC" correctly.

73, steve WB3LGC

On 2/2/20 7:20 PM, AL7CR wrote:

An absolutely classic problem, I am the first to respond I am assuming only 
because the Super Bowl is on!

I call this the "gain chain" problem.  It depends a bit on how you are set up 
but try the following.  Go into the menu on the K3S and turn down the LIN OUT value.  I 
have mine set at 2 I believe.  Once you do this you should be able to more finely control 
the drive level.

This is likely to fix your problem at once.

AL7CR

On Sun, Feb 2, 2020, at 3:59 PM, Lee Murrah via Elecraft wrote:

I am running WSJT-X in FT8 mode on my K3S using the onboard sound card
and USB cable and VOX for keying. My computer is a Mac running
Catalina. The K3S manual recommends setting the drive at 4 or 5 bars to
avoid distortion by the ALC.. When I use the audio output slider set
the drive level, the display jumps from no bars to 6 bars, and vice
versa, and nothing on between.  I have also tried using the MIC level
and the POWER slider in FT8 with the same results.  The software id
decoding fine. Can anyon suggest what the problem might be?

KV5M
Lee
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Re: [Elecraft] FT8 Driver Issue

[Bob McGraw K4TAX]

Go into the TX TEST mode and see if the issue still exist. If not, it’s an RFI 
issue. If not, back the MIC (Line gain) down to zero and start up watching the 
ALC  scale. The computer level may be overdriving the radio. If so back the PWR 
slider on WSJT down. 

Bob, K4TAX


Sent from my iPhone

> On Feb 2, 2020, at 6:13 PM, Lee Murrah via Elecraft 
>  wrote:
> 
> I am running WSJT-X in FT8 mode on my K3S using the onboard sound card and 
> USB cable and VOX for keying. My computer is a Mac running Catalina. The K3S 
> manual recommends setting the drive at 4 or 5 bars to avoid distortion by the 
> ALC.. When I use the audio output slider set the drive level, the display 
> jumps from no bars to 6 bars, and vice versa, and nothing on between.  I have 
> also tried using the MIC level and the POWER slider in FT8 with the same 
> results.  The software id decoding fine. Can anyon suggest what the problem 
> might be?
> 
> KV5M
> Lee
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Re: [Elecraft] FT8 Driver Issue

[AL7CR]

An absolutely classic problem, I am the first to respond I am assuming only 
because the Super Bowl is on!

I call this the "gain chain" problem.  It depends a bit on how you are set up 
but try the following.  Go into the menu on the K3S and turn down the LIN OUT 
value.  I have mine set at 2 I believe.  Once you do this you should be able to 
more finely control the drive level.

This is likely to fix your problem at once.

AL7CR

On Sun, Feb 2, 2020, at 3:59 PM, Lee Murrah via Elecraft wrote:
> I am running WSJT-X in FT8 mode on my K3S using the onboard sound card 
> and USB cable and VOX for keying. My computer is a Mac running 
> Catalina. The K3S manual recommends setting the drive at 4 or 5 bars to 
> avoid distortion by the ALC.. When I use the audio output slider set 
> the drive level, the display jumps from no bars to 6 bars, and vice 
> versa, and nothing on between.  I have also tried using the MIC level 
> and the POWER slider in FT8 with the same results.  The software id 
> decoding fine. Can anyon suggest what the problem might be?
> 
> KV5M
> Lee
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[Elecraft] FT8 Driver Issue

[Lee Murrah via Elecraft]

I am running WSJT-X in FT8 mode on my K3S using the onboard sound card and USB 
cable and VOX for keying. My computer is a Mac running Catalina. The K3S manual 
recommends setting the drive at 4 or 5 bars to avoid distortion by the ALC.. 
When I use the audio output slider set the drive level, the display jumps from 
no bars to 6 bars, and vice versa, and nothing on between.  I have also tried 
using the MIC level and the POWER slider in FT8 with the same results.  The 
software id decoding fine. Can anyon suggest what the problem might be?

KV5M
Lee
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[Elecraft] Kx3, wsjtx, broadband noise

[Tox]

Hoping someone has a suggestion for how I can work around some local QRM.

I have a kx3 with filters installed
I have wsjtx running.
I've recently added a px3 to see if it would help provide insight.

I find intermittent broadband noise that desenses my receiver on multiple
bands. 1) It appears to either be On or Off, no visible fading.
(Transitions are <<1 second). Sometimes a little flickering but usually
extends for minutes to hours.
2) When on, signals in waterfall completely disappear or are reduced to
just a couple nearby (loud) stations
3) when on, it wipes out at least one whole band (usually 20m, sometimes
40m as well).
4) when on, the full 200khz slice in px3 goes green snow
5) still happens if I throw breaker in my subpanel and am running off of
batteries
6) with 30 min of fiddling, haven't been able to see it in a kiwisdr node
less than a mile away
7) pskreporter still shows me to be getting out (to the extent I can)

Broadband, no visible peaks, so not sure I could triangulate it by
wardriving with a Kerberos.

Any suggestions?

Is there a way/practice to maybe leverage the filters to increase rejection
of the interference?

Thanks in advance,
Scott
AD6YT
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Re: [Elecraft] KX2 ... Any KX2 users on this list?

[Karl Heinz Kremer]

> [...]
> Plans are to activate my first POTA in the very near future. Next week.
> Y'all listen out for the OM trying to get it altogether with a KX2.
> 73, KW4CZ. Gordon

Gordon,

I am a brand new owner of a KX2, specifically purchased for POTA activations 
where I cannot just drive up and unload the ”big” rig (which happens to be a 
fairly small but heavy  FT-857D setup). I’ve had the KX2 with me on a recent 
trip to Florida and I activated three parks on SSB/PSK31. I used a SOTABEAMS 6m 
telescopic mast with a SOTABEAMS Bandhopper Midi. The ATU in the KX2 had no 
problems at all tuning the antenna. It’s a great POTA setup. Let me know when 
you’ll be out activating, I’ll be listening for you. 

73, Karl Heinz - K5KHK 
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Re: [Elecraft] HDSDR Mirrored spectrum

[vk4tux]

I had similar issue. i used a 3.5mm to 2.5mm audio cable (each end three
segment), from a Yaesu SCU-39 cable kit I was not using which looked perfect
for the job. 

However it turned out the centre segment was not wired, with same results as
above. Initially I thought my line-in was possibly not stereo on rear of my
Dell PC as it is a combo pink/blue mic/line in jack.

Found a stereo 3.5mm cable and luckily a 2.5/2.5mm adaptor for one end.
Looking much better, the display better than any of several others I have
tried incl non free.

I have found the Omni-rig cat control a little buggy sometimes, losing mode
control, and freq readout offset.
Re; setup and restart seems to get it back good.

Early days, and I think i just need more practice. I am using a realtek
sound card at the moment set 192KHz, and have ordered an ASUS Xonar U7 and
an stereo isolation lit with audio lines.

I would like a PX3 , however not at current pricing, and looking at a used
unit if some one is selling.

Adrian ... vk4tux



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Re: [Elecraft] K3S relay noise when using Rx ANT IN port

[VE2EBK]

We use this unit during our portable operations

 

 
https://ea4tx.com/en/tienda/frontend-limiter/trx-fel/

 

73 

 

Dany VE2EBK

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