Date   

Re: first time more than 3000spots/hour on all bands...

ON5KQ
 

yes, you can filter.... Phil's website (VK7JJ) offers the possibility.
Obviously, due to the short skip "QRM" the reception capability for the much weaker DX stations is limited. When there is so much short skip sporadic E reception often F2 reflections (being the normal propagation on shortwave) is not possible or attenuated due to absorbtion.
Yesterday the 20m band opened to North-America after the short skip signals dropped in signal strength.

I was surprised, how well the latest decoder really can cope with extremely busy bands when such propagation overloads the available wspr-frequency space with transmitting stations. I must say it is impressive, that the decoder can reliably pick more than 40stations in a 2min wspr circle from just 200Hz wide band...
How far this will develop in the coming years, when we probably will see a fully open 10m band even during the night and at the same time have good condx on the low bands ?
That is the moment, where I need a new PC for decoding...hi. The current solution with a dual CPU XEON workstation might be not enough..

The sporadic E max usable frequency yesterday was 47Mhz at about 21h (at the time of my first post above) according to the Ionosonde here in Belgium. Still not enough for opening on 6m although the regular stations were heard via tropo, I guess.

Ulli


Re: KFS reception quality - IMD and other (internal?) noise sources...

Rob Robinett
 

I have just returned from 5 hours at KFS and have time for only a brief report:

1) I removed the Nooelec AMB BF and 6/9 dB pads which were between the Qbit LNA outputs and the Kiwi RF inputs.  
    There are 2 Mhz HPF out at the antennas and I have muted the whole of the AM band, so no user can tune there on a Kiwi.  
    So the Omni Kiwis have additional 6 dB gain and the others an additional 9 dB gain.  I will monitor WD's overload log to verify those changes don't result in significant overload events.
2) I confirmed that the NW feed from the primary multicoupler is suffering from severe AM IMD in the 2-4 Mhz region, so this IMB is generated in that multicoupler or more likely by the LNA out at the antenna
    Omni A and B also show that IMD but to much lesser extent.  Fixing these will require help from ARINC
3) Thanks to Glenn's AA and the tinySA, I tracked down the source of the every 40 Khz switcher RFI:  it is a vertically polarized signal generated at the cell phone equipment shed at the base of the cell phone tower shared with the NW antenna.  Again, ARINC is going to have to get  that fixed if they care about it.  That same RFI can be heard on the Omni which is the other antenna closest to the cell phone shed (about 100M away).  The SE and SW antennas are about 200+M away from that shed and so that RFI is barely noticable on those antennas.
4)  I see other switcher RFIs, so I'm sure there are many other bugs to squash, but the signals we see on the Kiwis are pretty much what the portable Kiwi sees when connected to the primary multicouplers.  So all indications are the problems are outside the building. 
4) Glen''s AA + the portable Kiwi showed a very clean spectrum when I got 300M away from the cell shed and main building.  There is very good wifi coverage out in the fields, so I think deploying a solar powered AA + Kiwi as far as possible (e.g 400M)  from the cell shed would result in a very clean full spectrum.

I now understand the location of all the antennas and can see why the NW and Omni will always be impaired by the cell shed.

Rob


On Thu, Jun 10, 2021 at 12:33 PM ON5KQ <ON5KQ@...> wrote:
In the meantime, I must correct my report from above. There are indeed also during the night severe man-made noise sources, which I believe are produced somewhere in the signal distribution system.,,,,more detailed reports I have sent to Rob, to help to find a solution and support kfs...



--
Rob Robinett
AI6VN
mobile: +1 650 218 8896


Re: WSPRDaemon creating empty spot files and nothing for WSPRNet

Rob Robinett
 

Duncan gave me ssh access to his Pi and I was able to see that his RaspSDR wasn't sending audio through the kiwirecorder session, nor was autowspr able to decode on the RaspSDR.  Duncan later reported that an update to his RaspSDR SW fixed those problems and WD was running fine.  However I don't know any more detail about the RaspSDR SW change.

On Thu, Jun 10, 2021 at 1:33 PM Jim Lill <jim@...> wrote:

does wsprd decoder ever run?

On 6/9/21 7:45 PM, Duncan GM5JET wrote:
Hi Rob,

There is only the entry in the log file for starting the pid and then nothing else.

I have watched the updates and I get the message that states that the files contained no spots and that the files should be flushed.  I'm rather stumped!

73
Duncan



--
Rob Robinett
AI6VN
mobile: +1 650 218 8896


Re: first time more than 3000spots/hour on all bands...

WA2TP - Tom
 

Perhaps there is way to filter out by distance and disregard spots that are under xxx Km?


From: wsprdaemon@groups.io <wsprdaemon@groups.io> on behalf of Jim Lill <jim@...>
Sent: Thursday, June 10, 2021 4:30 PM
To: wsprdaemon@groups.io <wsprdaemon@groups.io>
Subject: Re: [wsprdaemon] first time more than 3000spots/hour on all bands...
 

Looking at the data, I see that the EU advantage over North America is on 17-10m  While I'm sure that much of that is from E and F skip I'd bet there is some GW and Ground Scatter  in there too.  When bands are "supposed to be hot" more people turn there TX on and those shorter paths in EU have those  TX to take advantage of.

When I have time, I'll try to do some analysis on that

-Jim

WA2ZKD

On 6/10/21 3:48 PM, KD2OM wrote:
We US stations might as well pack up our tents and go home:)  As soon as the cycle moves along we will be lucky to make the top ten World Wide.

73
Steve KD2OM

.
 

On Jun 10, 2021, at 15:40, ON5KQ <ON5KQ@...> wrote:

just checked: 20m only spots frequently about 40stations per 2min... currently at 900spots/hour -  incredible and only possible with the current decoder, I guess - I don't think earlier versions were able to handle such overcrowded wspr-channels...
Ulli, ON5KQ


Re: WSPRDaemon creating empty spot files and nothing for WSPRNet

Jim Lill
 

does wsprd decoder ever run?

On 6/9/21 7:45 PM, Duncan GM5JET wrote:
Hi Rob,

There is only the entry in the log file for starting the pid and then nothing else.

I have watched the updates and I get the message that states that the files contained no spots and that the files should be flushed.  I'm rather stumped!

73
Duncan


Re: first time more than 3000spots/hour on all bands...

Jim Lill
 

Looking at the data, I see that the EU advantage over North America is on 17-10m  While I'm sure that much of that is from E and F skip I'd bet there is some GW and Ground Scatter  in there too.  When bands are "supposed to be hot" more people turn there TX on and those shorter paths in EU have those  TX to take advantage of.

When I have time, I'll try to do some analysis on that

-Jim

WA2ZKD

On 6/10/21 3:48 PM, KD2OM wrote:
We US stations might as well pack up our tents and go home:)  As soon as the cycle moves along we will be lucky to make the top ten World Wide.

73
Steve KD2OM

.
 

On Jun 10, 2021, at 15:40, ON5KQ <ON5KQ@...> wrote:

just checked: 20m only spots frequently about 40stations per 2min... currently at 900spots/hour -  incredible and only possible with the current decoder, I guess - I don't think earlier versions were able to handle such overcrowded wspr-channels...
Ulli, ON5KQ


Re: first time more than 3000spots/hour on all bands...

KD2OM
 

We US stations might as well pack up our tents and go home:)  As soon as the cycle moves along we will be lucky to make the top ten World Wide.

73
Steve KD2OM

.
 

On Jun 10, 2021, at 15:40, ON5KQ <ON5KQ@...> wrote:

just checked: 20m only spots frequently about 40stations per 2min... currently at 900spots/hour -  incredible and only possible with the current decoder, I guess - I don't think earlier versions were able to handle such overcrowded wspr-channels...
Ulli, ON5KQ


Re: first time more than 3000spots/hour on all bands...

ON5KQ
 

just checked: 20m only spots frequently about 40stations per 2min... currently at 900spots/hour -  incredible and only possible with the current decoder, I guess - I don't think earlier versions were able to handle such overcrowded wspr-channels...
Ulli, ON5KQ


Re: KFS reception quality - IMD and other (internal?) noise sources...

ON5KQ
 

In the meantime, I must correct my report from above. There are indeed also during the night severe man-made noise sources, which I believe are produced somewhere in the signal distribution system.,,,,more detailed reports I have sent to Rob, to help to find a solution and support kfs...


first time more than 3000spots/hour on all bands...

ON5KQ
 

Short skip conditions here in Europe make my 2x Xeon quadcore Workstation be real busy for the first time...
300km far away stations on 20m are 40db over S9 on the rhombic to northwest. This antenna favours rather high angle radiation on 20m.... so the short skip propagation put the kiwi's on fire...hi
10db att-pads nessesary for the first time as well this evening...
I saw Holgers kiwi also overload for short moments for the strong UK BC-signals from Wooferton (250...500kW on 20dbi ant)
My kiwi shows S9+55db for these stations today...
about 19h utc, 21h local, local sunset expected at 19h58 in roughly one hour.... the computer needs almost 70sec - never experienced before

Frank LX1DQ also spots really al lot (also almost 3000spots all band/hour), Holger similar
All bands full throttle (incl. 10m) at the moment...
Only 6m suffers now, due to another 6db att.pad needed to prevent overloading at the rhombic to northwest ...
I think within 30min I can remove it again, as signal strength will weaker a bit...


Has anyone run auto-wspr and/or WD on a RaspSDR?

Rob Robinett
 

One of our users is tying to use a RaspSDR and neither auto-wspr nor WD are seeing signals which are present on the main waterfall display.


Re: WSPRDaemon creating empty spot files and nothing for WSPRNet

Duncan GM5JET
 

Details sent via PM


Re: WSPRDaemon creating empty spot files and nothing for WSPRNet

Rob Robinett
 

Can you give me ssh access to your Pi?
Or we could do a Zoom session


Re: WSPRDaemon creating empty spot files and nothing for WSPRNet

Duncan GM5JET
 

Hi Rob,

There is only the entry in the log file for starting the pid and then nothing else.

I have watched the updates and I get the message that states that the files contained no spots and that the files should be flushed.  I'm rather stumped!

73
Duncan


Re: WSPRDaemon creating empty spot files and nothing for WSPRNet

Rob Robinett
 

Hi Duncan,

Is there anything in the ~/wsprdaemon/wsprdaemon.log file?

if not, then to watch the upload daemon:
cd ~/wsprdaemon/uploads.d/wsprnet.d/spots.d/
increment the verbosity
/wsprdaemon/wsprdaemon.sh -d
and follow updates with:
tail -F uploads.log

Rob


WSPRDaemon creating empty spot files and nothing for WSPRNet

Duncan GM5JET
 

Hi all,

I have just installed WSPRDaemon on a Pi4 and am running it in conjunction with a RaspSDR.  WSPR Daemon and the radio board seem to be talking to each other but WSPRDaemon is not uploading any spots at all.  There are empty spot files in the wsprdaemon.d upload folder but nothing at all in the wsprnet.d folder.  I also tried pinging wsprnet.org from the pi with wsprdaemon installed on it but this seemed to take a very long time.

I have tried searching the group for an answer but other upload issues seem to be very different.  Has anyone experienced anything similar when setting up WSPRDaemon?

73,
Duncan


Re: KFS reception quality - IMD and other (internal?) noise sources...

ON5KQ
 

Yes - now at local California midnight observing (dead) 20m band... All antennas show noise - strongest warterfall bars are every 180kHz.....
Also the empty 10m looks rather dirty... yesterday this was not the case!  Lets see, if this changes day by day... especially it will be interesting to see, what happens on the weekend.
In my neighborhood, there is a big improvement at the weekend of industrial noise (from the commercial centers here at about 3-5miles from my location)

Ulli


Re: KFS reception quality - IMD and other (internal?) noise sources...

Rob Robinett
 

Thanks Ulli,

I don't have time this morning to respond fully, but my quick look showed no IMD but the switcher RFI still present.  I will compose a report later which fully explains my observations.

Rob

On Thu, Jun 3, 2021 at 5:30 AM ON5KQ <ON5KQ@...> wrote:
Hello,
This is to report my findings from night time usage of the kfs-antennas. I understand, that you have tried to find the various noise sources and reason for strong 'birdies' and other unwanted signals, which is believed to be produced by the KFS system somehow...
I also understand that most of the investigation has been done during daylight hours.
Now, due to the big time difference for me from Europe it is very easy to verify to degraded reception quality during middle-of-the-night - dead band conditions....

And to make things short:
- I could not find any of the problems you showed during our zoom meeting session at local morning time.

I checked at local midnight in California:
- the Weather Fax from Japan at 7985 kHz was very strong (radio jmh) The north west antenna was S9.... switched to South East - completely clear channel..... EMPTY! these antennas really work, from pattern point of view! South west antenna was weaker on the Japanese FAX, but still good copy - similar than the omni, which were both 10db down to the directional LP to NW...
- I searched the 8.5MHz aviation band for any 'unwanted noise sources'..... could not find any! Bandnoise was at -105dbm (S-meter) with some qrn, but very good reception quality... the 530 was at least as comfortable to listen to, than at the same time at northern Utah omni... (I checked...)
- Checked all amateur bands: Yes on 20m there were some regular birdies, but not as single carriers - it was a mix of several carriers concentrated within 100Hz - every 60kHz or so... I have the same here, when searching for it on completely dead band....
Could you check, if the Kiwi's are very closely placed in the rack ? I found, that even without antennas connected the one kiwi picks up noise from the kiwi next to it - it is only a few db, but you can see the lines in the spectrum. The only way to check it, is run every kiwi with all other kiwi's switched off. then switch on the other kiwi's one by one... you see the noise from the 'neighbor' kiwis in the rack... I plan to place the kiwi's with at least 30cm space to every other kiwi... may be something to check, when visiting KFS next time...

At least I can say:
- whenever a shortwave band was open - reception was great ! No big deal with noise sources! If this is what the operators hear in their commercial traffic = no wonder they do not understand the amateurs claiming noise.... so better to search more:
- could you please check at very late in your local evening at midnight or even later, if you are able to to so....  My guess now is indeed local radiated noise from the neighborhood of kfs (up to 20km is absolutely possible, with such large antennas!). This noise is only at daytime...
- I checked in the morning - 4h30 local California time.... clean bands... or at least as clean as you can get it realistically..... you are not in a remote area at half moon bay... hundreds of miles to the next powerline....hi
- It could even be, that although the noise you have seen during daytime is common-mode problem, this problem goes away, as the noise creator is switched of at late evening for some reason....

So, I hope my observations help finding the problem. Especially it my be useful information, if you plan to contact the commercial people about it with a written letter... before you send a letter I would better examine the location and also verify, that this noise is indeed 24h/7day a week, being a fundamental problem.
But my findings show, that there are times (at least) where there is NO Problem....

I will keep checking it and perhaps we find a kind of "schedule" for the noise...

regards,
Ulli, ON5KQ



--
Rob Robinett
AI6VN
mobile: +1 650 218 8896


KFS reception quality - IMD and other (internal?) noise sources...

ON5KQ
 

Hello,
This is to report my findings from night time usage of the kfs-antennas. I understand, that you have tried to find the various noise sources and reason for strong 'birdies' and other unwanted signals, which is believed to be produced by the KFS system somehow...
I also understand that most of the investigation has been done during daylight hours.
Now, due to the big time difference for me from Europe it is very easy to verify to degraded reception quality during middle-of-the-night - dead band conditions....

And to make things short:
- I could not find any of the problems you showed during our zoom meeting session at local morning time.

I checked at local midnight in California:
- the Weather Fax from Japan at 7985 kHz was very strong (radio jmh) The north west antenna was S9.... switched to South East - completely clear channel..... EMPTY! these antennas really work, from pattern point of view! South west antenna was weaker on the Japanese FAX, but still good copy - similar than the omni, which were both 10db down to the directional LP to NW...
- I searched the 8.5MHz aviation band for any 'unwanted noise sources'..... could not find any! Bandnoise was at -105dbm (S-meter) with some qrn, but very good reception quality... the 530 was at least as comfortable to listen to, than at the same time at northern Utah omni... (I checked...)
- Checked all amateur bands: Yes on 20m there were some regular birdies, but not as single carriers - it was a mix of several carriers concentrated within 100Hz - every 60kHz or so... I have the same here, when searching for it on completely dead band....
Could you check, if the Kiwi's are very closely placed in the rack ? I found, that even without antennas connected the one kiwi picks up noise from the kiwi next to it - it is only a few db, but you can see the lines in the spectrum. The only way to check it, is run every kiwi with all other kiwi's switched off. then switch on the other kiwi's one by one... you see the noise from the 'neighbor' kiwis in the rack... I plan to place the kiwi's with at least 30cm space to every other kiwi... may be something to check, when visiting KFS next time...

At least I can say:
- whenever a shortwave band was open - reception was great ! No big deal with noise sources! If this is what the operators hear in their commercial traffic = no wonder they do not understand the amateurs claiming noise.... so better to search more:
- could you please check at very late in your local evening at midnight or even later, if you are able to to so....  My guess now is indeed local radiated noise from the neighborhood of kfs (up to 20km is absolutely possible, with such large antennas!). This noise is only at daytime...
- I checked in the morning - 4h30 local California time.... clean bands... or at least as clean as you can get it realistically..... you are not in a remote area at half moon bay... hundreds of miles to the next powerline....hi
- It could even be, that although the noise you have seen during daytime is common-mode problem, this problem goes away, as the noise creator is switched of at late evening for some reason....

So, I hope my observations help finding the problem. Especially it my be useful information, if you plan to contact the commercial people about it with a written letter... before you send a letter I would better examine the location and also verify, that this noise is indeed 24h/7day a week, being a fundamental problem.
But my findings show, that there are times (at least) where there is NO Problem....

I will keep checking it and perhaps we find a kind of "schedule" for the noise...

regards,
Ulli, ON5KQ


Re: failed install libgfortran5

John
 

I ended up with a version deadlock between cmake and the library listed.
I upgraded tom18;04 and all went OK. I built wsjtx from source and all wsprdaemon is good.
John

661 - 680 of 944