Glider range to Basestion not reported

[mikeh203]

Hi

I 'm new to this forum so hope I'm posting in the right/appropriate place.

Some months ago we upgraded the gliding clubs basestation UKWRM to re-broadcast pilot aware. Since that time the range information for a glider currently being tracked by UKWRM appears blank on the http://live.glidernet.org display.
When the basestation tracks a Pilot Aware equipped aircraft the range to these is displayed correctly.

As the re-installation with Pilot Aware is much more script orientated than the old FLARM only there appears to only be one place to enter the basestation lat and log this is can be seen to be correct both in the config files, by the location of the ground station on http://live.glidernet.org and by the range to passing pilot aware equipped aiarcraft.

I recently updated the basestation code, it is now running  rtlsdr-ogn-0.2.6. This had no effect on the range issue

Any help you could give me to track down why there is no range information for the gliders would be greatly appreciated.

Thanks
    Mike

[Admin]

Hi Mike,

The two executabled from the ogn are used un-modified, so these are ogn-rf and ogn-decode.
the only thing I guess which could affect anything would be the configuration file, but I would be confident this is correct if this is appearing in the correct place.

Have you tried asking the maintainers of http://live.glidernet.org what the problem could be from their perspective ?
The OGN side of things are unmodified, it is basically two executables, and a configuration script.
A separate program runs in parallel to send PilotAware traffic to the APRS servers.

is it worth asking on the google groups ?
if we knew who the maintainer was, we could work out what they thought was wrong.

Thx
Lee

[iain]

Hi

If you look on Grafana -

http://grafana.glidernet.org/d/000000001/receivers?orgId=1&var-receiver=UKWRM&from=now-2y&to=now

UKWRM seems to have stopped data around the end of March 2018

but OGN Network range shows data -

https://ognrange.newacecorp.com/?#ukwrm,max,d30,52.02155_0.86168,9,#008000ff:#00ff00ff,circles;

have you checked the antenna and SDR connected to the Pi

[mikeh203]

Hi Guys

Thanks for  your thoughts

 March 2018 was when we made the PA upgrade but the PA antenna did not get erected until a couple of months latter.
Both ogn-rf and ogn-decode are running can check with a telnet to port 50000/50001. Also if either should die we don't
see FLARM traffic on the ground at the airfield. Add all this together and pretty sure the FLARM antenna and receiver are all working OK

ogn-rf and ogn-decode are started from /etc/rtlsdr-ogn.conf which starts the process with a reference to the config file
 ~pi/rtlsdr-ogn/rtlsdr-ogn-paw.conf

--- Skipping the RF bit as the receiver seems OK
Position:
{
    # [deg] Antenna coordinates
    Latitude   =   51.944160;
    Longitude  =   0.803051;

    # [m]   Altitude above sea level
    Altitude   =   66;

    # [m]   Geoid separation: FLARM transmits GPS altitude, APRS uses means Sea level altitude
    GeoidSepar =   46.4492;
};

APRS:
{
    # APRS callsign (max. 9 characters)
    Call = "ukwrm";
};

So there really is not much which can go wrong here.
I think Lee you hit on the nail on the head the problem is at the OGN Server  end.
Paul Ruskin (also on this forum) did the registration with glidernet.org for the club but I'll see if I can get a discussion going at that end as well.

Thanks agin for your help
Mike

[mikeh203]

Hi Guys

I wrote to contact@glidernet.org and Sebastien Chaumontet replied.

My bad: by mistake when we did the Pilot Aware upgrade we named the receiver "ukwrm" in the config file not "UKWRM"  you can see this in my previous post.
Correcting the case of the receiver name in the config file and restarting and now the range information to the gliders is correctly displayed.
Grafana is again starting to show data for UKWRM

A side effect of this change in the config is that the range to Pilot Aware equipped aircraft is no longer displayed. From the Gliding Clubs perspective this is not an issue since visiting powered aircraft are not permitted under the terms of the clubs planning permission so none ever land here (except in an emergency).

Thanks for your help I consider this closed.

MIke