PilotAware

British Forum => OGN-R PilotAware => Topic started by: tfede on April 19, 2019, 10:26:06 pm

Title: OGNPAW stations appears offline in gliders network
Post by: tfede on April 19, 2019, 10:26:06 pm

Hi,


from yesterday my two ognpaw stations are appearing offline in the ogn page ([size=78%]http://ognrange.unseen.org (http://ognrange.unseen.org/)[/size]), stations are PWCarpi and PWCarpi2.
Both are up and running in two different locations with two different internet providers, software versions are both the latest one so i am wondering if someone else is having the same issues or if it is a problem of the Italian part of the network.


Federico

Title: Re: OGNPAW stations appears offline in gliders network
Post by: Ian Melville on April 20, 2019, 08:55:41 am

Not sure that I trust any of those websites to give an accurate report on my stations status. I would just do a practical check with a PAW unit.

Title: Re: OGNPAW stations appears offline in gliders network
Post by: Admin on April 20, 2019, 10:41:28 am

Yes I don’t trust these either
I run my own client, cant find the link right now, away from computer
Thx
Lee

Title: Re: OGNPAW stations appears offline in gliders network
Post by: tfede on April 20, 2019, 05:30:47 pm

I agree with you both, OGN Netwok page seems to be not so accurate.
I did check in the dropbox link and it seems that the first station gone down for some reasons.
Now is up but i am not able to see it with my rosetta, in fact none of the two is visible by both my rosetta and PAW Classic.
But i see my Rosetta and PAW classic into the OGNPAW.
I have no idea on what to do  now, it seems OGNPAW station is receiving only but not transmitting in P3I frequency...

[UPDATE 19:45]
I monitored the 869.525 frequency with rtlsdr dongle and cubicsdr, what i discovered is that OGNPAW stations are not transmittig at all. Just at power on and boot some transmissions are sent and after that nothing else.
I found some random transmissions at 868.325 but don't seem to be related to P3I module.

Help is welcome

Best regards

Federico

Title: Re: OGNPAW stations appears offline in gliders network
Post by: Admin on April 21, 2019, 11:16:40 am

Hi Federico
OGN-R will only transmit a Flarm position when a paw is in range
It will also send a ground station position every 20 seconds

What did you use to measure the transmission on 869.325, if it is an a SDR, have you corrected the frequency drift ?

Could you post the home and traffic page from rosetta
Also the home page from OGNR

Thx
Lee

Title: Re: OGNPAW stations appears offline in gliders network
Post by: EricC on April 21, 2019, 07:19:54 pm

Does the Paw TX only transmit in response to a received transmission?
The TX used to be every twenty seconds.
All seems to be working OK, I can only hear transmission when responding to a PAW TX from a aircraft in flight.

Title: Re: OGNPAW stations appears offline in gliders network
Post by: Admin on April 23, 2019, 01:09:04 pm

Quote from: EricC on April 21, 2019, 07:19:54 pm

Does the Paw TX only transmit in response to a received transmission?

yes

Quote

The TX used to be every twenty seconds.

Only for the Ground Station Position (not for traffic)

Quote

All seems to be working OK, I can only hear transmission when responding to a PAW TX from a aircraft in flight.

That is correct behavior, no point rebroadcasting Flarm positions, when no-on is there to hear ;-)

Title: Re: OGNPAW stations appears offline in gliders network
Post by: EricC on April 23, 2019, 04:35:56 pm

Great thanks, good to know working as required.