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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 PilotAware 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!
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Table of Contents
Summary of Contents for PilotAware OGN-R
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Page 1: Introduction
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†... -
Page 2: Table Of Contents
Parts Required to build an OGN-R uplink .................17 OGN-R PilotAware Uplink Thank you for offering to help to expand the OGN-R Network to provide additional safety for powered aircraft and gliders alike by up-linking FLARM and Mode-S equipped aircraft co-... -
Page 3: What Parts Are Required
FREE OF CHARGE. This is available to supporters who want to increase the OGN-R network both in the UK and mainland Europe. In addition, if required, PilotAware will load and configure the software to make it even easier for you. If you want to know more contact us at mailto:OGN@pilotaware.com... -
Page 4: Installation High Level Diagram
The above diagram is provided as a visualisation of the hardware installation which can be modified for your specific installation. The Raspberry Pi, the Antenna 3 (Flarm 868MHZ Rx), the cable and the Flarm RTLSDR will already be installed in your existing OGN-R Station. Upgrade The upgrade of the OGN consists of 1. -
Page 5: Location For The 2 New Antennas (Piotaware Tx Rx And 109Mhz Rx)
23:00 to 0400) This will ensure a timely daily reboot of the system. 30 minutes downtime is enough From January 2019, the OGN-R software includes an automatic check for and download of available new software. -
Page 6: Connecting The Electronics
2. The coaxial cable connected to the PilotAware (869.5MHz) Antenna (shown on the left of the following diagram) is connected firmly to the SMA connector on the PilotAware Bridge mounted as a Hat on top of the Raspberry Pi via the PIO connector. -
Page 7: Locating And Naming Your Site
Upgrading an Existing OGN Ground Station to Rebroadcast Glider Locations on 869.5MHz. December 2019. Radio Bridge Note The FLARM antenna MUST RTL-SDR Raspberry Pi be connected to the RTL-SDR Top FLARM Case connected to the TOP LEFT Bottom HAND USB SOCKET and if fitted 1090MHz the 1090MHz antenna MUST be connected to the BOTTOM LEFT... -
Page 8: Downloading And Installing Ogn-R Software
December 2019. Downloading and installing OGN-R Software. To make the installation of the OGN-R as easy as possible new software has been produced that steps you through the installation process. You will need to note your existing station name its latitude, longitude and the height of the antenna above mean sea level. - Page 9 Also, please note if the router is powered down it may allocate a different IP address. This is called dynamic IP allocation. This can be overcome by giving the OGN-R a fixed IP address. 4. Additionally, the OGN-R software has been developed so that you can run a shell from within a web browser.
- Page 10 Upgrading an Existing OGN Ground Station to Rebroadcast Glider Locations on 869.5MHz. December 2019. 1090MHz detection. This is used to provide a 1090MHz feed to 360Radar and the virtual RADAR server. The screen will look something like this though this may change with later revisions of SW which is dynamic.
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Page 11: Possible Problems
Provide Geoid Return Note the PilotAware Configuration program will calculate the GEOID and suggest what it is. Use this unless you have a more accurate GEOID figure The software will then install and calibrate the RTLSDR FLARM radio receiver. This will take about 90 seconds and it will step through 0dB to +50dB. Stages If all is well a banner will then be shown with your configuration as shown below. -
Page 12: Checking For Captured Real Time Data
Note the OGN-R software will auto update. The best way of doing this is to install a simple mechanical timer (the type used to turn standard lamps on and off) between the mains and the RPi power supply, so that the Raspberry pi is powered down between midnight and 0400 hrs. -
Page 13: Checks To Show That Your Ogn-R Station Is Working Ok
1. The OGN-R station will be recorded in the top right hand of the PilotAware RADAR Screen. 2. The OGN-R station will be shown as an ICON in the centre of the RADAR screen. (You must have selected show ground stations on your PilotAware unit using the latest SW release 20190721) 3. -
Page 14: Other Apps To Show That The Ogn-R Is Working
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 your OGN-R site. On each site zoom into your local area and check your site progress. The Open Glider Network at http://ognrange.onglide.com... -
Page 15: The Pilotaware 360Radar Virtual Radar Station
The PilotAware 360Radar Virtual RADAR Station. Introduction If you have installed all 3 antennas PilotAware, FLARM and 1090MHz then you will be able to use a browser equipped computer or tablet to drive a Virtual RADAR display for your clubhouse or any other location. This display can be a computer itself, a monitor or large TV. - Page 16 December 2019. On the second row, a URL entitled Radar will be seen. Click on this to activate PilotAware 360 Radar Virtual RADAR. After about 10 – 20 seconds, a screen resembling this will appear. At the top left corner, there is a menu which when activated allows configuration of the screen.
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Page 17: Addendum
The filters page allows the user to generate a range of filters for customising the display. 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. Addendum Parts Required to build an OGN-R uplink The parts below are recommended but can be substituted for other suitable parts. - Page 18 N-type Male to https://www.wifi-antennas.co.uk/sma-male-to-n-type-male-adaptor.html HDF 400 Crimp https://www.wifi-antennas.co.uk/catalogsearch/result/?q=crimp+tool+HDF+400 tool SD Card https://www.amazon.co.uk/SanDisk-MicroSDHC-Memory-Label- Change/dp/B001D0ROGO/ref=asc_df_B001D0ROGO/?tag=googshopuk- 21&linkCode=df0&hvadid=309924738384&hvpos=1o1&hvnetw=g&hvrand=455651977643598 2955&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=1007082&hvta rgid=pla-309497947842&psc=1 RPi Charger https://www.amazon.co.uk/Raspberry-Pi-Power-adapter- UK/dp/B01CCR5P8U/ref=sr_1_5?s=computers&ie=UTF8&qid=1533245620&sr=1- 5&keywords=Raspberry+Pi+charger Ethernet cable https://www.amazon.co.uk/CSL-Ethernet-Gigabit-1000Mbit- compatible/dp/B00J3UYNII/ref=sr_1_6?s=computers&ie=UTF8&qid=1533245968&sr=1- 6&keywords=Ethernet+cable Mechanical timer https://www.amazon.co.uk/PowerMaster-438242-Plug-Mechanical- Timer/dp/B007OUQB48/ref=sr_1_29?ie=UTF8&qid=1533246329&sr=8- 29&keywords=mechanical+timer FLARM Antenna ogn@pilotaware.com https://fjhuahong.manufacturer.globalsources.com/si/6008806990472/pdtl/Omni- antenna/1130137384/868MHz-9dBi-omni-base-antenna-fiberglass-antenna-N.htm PilotAware ogn@pilotaware.com Antenna https://fjhuahong.manufacturer.globalsources.com/si/6008806990472/pdtl/Omni- antenna/1130172675/868MHz-7-dBi-Omni-Antenna-fiberglasss-antenna-N-F.htm...
- Page 19 Upgrading an Existing OGN Ground Station to Rebroadcast Glider Locations on 869.5MHz. December 2019. 1090Mhz antenna ogn@pilotaware.com https://fjhuahong.manufacturer.globalsources.com/si/6008806990472/pdtl/Omni- antenna/1130172675/1090MHz-7-dBi-Omni-Antenna-fiberglasss-antenna-N-F.htm There are several inexpensive commercially available antennae mounts available here are just a few examples. Others are available on line to meet your specific application.
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