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Upgrading an Existing OGN Ground Station to Rebroadcast Glider Locations on 869.5MHz. 

December 2019. 

 

                                                                             

Introduction  

 
 
Why should you upgrade an existing OGN Ground station to Rebroadcast Glider Locations 
on 869.5MHz? When upgraded the Ground Station is termed an OGN-R Station. -R signifying 
data rebroadcast  
 
In upgrading to OGN-R you will be helping the gliding and General Aviation Communities 
(Foot-launched, Gliding, Microlights and Powered Aircraft) in Europe and the UK to improve 
the interoperability of the various Electronic Conspicuity systems available today. These are 
ADSB, FLARM, PilotAware, Mode- S and Mode-C. By installing an OGN-R station at your 
location (Club or House) you will be contributing to the ground network that will assist the 
interoperability between systems by up-linking situational awareness data to PilotAware 
equipped aircraft. 
 
In addition as part of the installation you will get a real time,  on site Virtual RADAR station 
that can be displayed on a computer, monitor or TV screen. This will via the OGN-R upgrade 
show all GA aircraft equipped with Flarm, PilotAware and ADSB in real time and also Mode-S   
equipped 

aircraft with a small MLAT† delay. †Note this is currently operational in the UK 

where we have sufficient MLAT data available from 360RADAR. In mainland Europe we are 
growing the capability. 
 

We don’t expect you to do it all alone. Whilst stocks last Pilo

tAware will provide you with 

the Radio Bridge and software free of charge and will also provide a Pi2B, free of charge, if 
you are currently  running an earlier model. You will need to provide the rest, as described 
in this document, which you can do for less than £150. 
 
An OGN-R ground based station will provide about a 30-40Km area of coverage to help 
aviation safety around your site. 

 

 

You can do everything yourself or we will help

ogn@pilotaware.com

 

 
Interested? Let

s go! 

 

 

 

 
 
 
 
 
 
 

Summary of Contents for OGN-R

Page 1: ...Aware equipped aircraft In addition as part of the installation you will get a real time on site Virtual RADAR station that can be displayed on a computer monitor or TV screen This will via the OGN R...

Page 2: ...ellinabox 8 Possible Problems 11 Testing to see if Your Station is Working 11 Checking for captured real time data 12 Checks to show that your OGN R station is Working OK 13 Other Apps to show that th...

Page 3: ...2 1A power supply 9 A simple mechanical timer to turn off the power once a day between 0200 0300 10 A Pigtail to connect the Co Axial cable to the 1090MHz RTL SDR 11 Antenna mounts to support the ant...

Page 4: ...are for your specific site Location Site Name Password and Email Address 5 Power up and test Location for the Electronics The location for the electronics should be as close to the antennas as practic...

Page 5: ...m apart Further away the better Only the PilotAware antenna is transmitting It transmits at 869 5MHz so will not affect or be affected by local VHF voice antennas Each and every installation will be b...

Page 6: ...he SMA connector on the PilotAware Bridge mounted as a Hat on top of the Raspberry Pi via the PIO connector 3 You will already have a Coaxial cable connected to the FLARM Antenna which is connected to...

Page 7: ...other USB sots in the configuration program described later If necessary external aluminium enclosures provided with the dongles should be removed Locating and Naming your Site Location Information Yo...

Page 8: ...he root of the SD card should contain the following folders defaults os overlays and many other files 5 When you have downloaded all the files eject the card from your computer and load the SD card in...

Page 9: ...s been developed so that you can run a shell from within a web browser Google Chrome or Firefox is recommended When connected on the same network as the Pi navigate to http ognpaw local Note this is N...

Page 10: ...e allocated to which frequency 868Mhz for Flarm or 1090MHz for ADSB and Mode C S You must then also ensure that correct antennas are connected to the correctly tuned RTL SDR The Flarm antenna will be...

Page 11: ...le to the FLARM antenna Suspect the co axial cable pigtail or RTLSDR connection Make sure all connections are secure and that the inner pins of the Co axial cable connectors are mating properly If you...

Page 12: ...ical due to local obstructions etc It will take several weeks to capture enough data to determine the range of your station There is a second useful URL https www dropbox com s 0n5emkw4nm85sw1 ogn r t...

Page 13: ...ing the uplink Only provided in the UK in Mode S 3D trial areas Checks to show that your OGN R station is Working OK To check that the OGN R station is working power up a PilotAware unit in the immedi...

Page 14: ...To see logging from Pilotaware Display Flarm P3i MLAT nc localhost 50002 Other Apps to show that the OGN R is working There are several Apps that can be used to show historical and real time data from...

Page 15: ...be shown on the screen with the normal limitations of multilateration MLAT These are i The target Mode S aircraft must have been interrogated by Primary RADAR This may not happen below 800ft ii There...

Page 16: ...this will appear At the top left corner there is a menu which when activated allows configuration of the screen The menu has several options It is not intended to go through each menu here as they are...

Page 17: ...ay Full operating instructions are available at as http www virtualradarserver co uk Please remember as good as PilotAware VRS is this must not be used for air traffic management control or guidance A...

Page 18: ...co uk n type female crimp connector hdf400 html N type Male to SMA https www wifi antennas co uk sma male to n type male adaptor html HDF 400 Crimp tool https www wifi antennas co uk catalogsearch re...

Page 19: ...bgear tv aerial stand off bracket 9 90874 tc HB3 ds_kid 92700024374092992 ds_rl 1248154 ds_rl 1245250 ds_rl 1247 848 gclid Cj0KCQiAw9nUBRCTARIsAG11eic35MmxwVB1JF2d8v2ONaZ0cGs15lNBii4W0G6 m0JDnaeCaNCID...

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