Shopping List v3 TX

features

• passive cooling with large 2mm copper heatsink (max. CPU temperature < 60 degrees celsius when not directly exposed to sunlight)
• very low OGN noise figure (< 5dB)
• 868MHz transmitter module included (supporting multiple protocols)
• total power draw measurements
  • Pi3B, 1GB RAM: ~5.4W
  • Pi3B+, 1GB RAM: ~6.6W
  • Pi4B, 2GB RAM: ~6.8W

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tools required

• PH1 screw driver
• small hacksaw (for mechanical case adjustments)
• 5mm drill bit for optional mounting
• 7mm drill bit for the 868MHz transmitter antenna pigtail connector

Raspberry Pi board (1GB RAM is sufficient)

• Pi3B: https://www.raspberrypi.com/products/raspberry-pi-3-model-b/
• Pi3B+: https://www.raspberrypi.com/products/raspberry-pi-3-model-b-plus/
• Pi4B: https://www.raspberrypi.com/products/raspberry-pi-4-model-b/

SDRs, Antennas and Cable Adapters Bundle:

• Nooelec nano 2+: https://www.nooelec.com/store/stratux-bundle-nano-2-plus.html (SDR plastic cases need to be removed so that two SDRs fit in the USB ports)
• Nooelec nano 3: https://www.nooelec.com/store/stratux-bundle-nano-3.html

Eleduino Stratux Case with (optional) Fan (designed for Pi3B, some mechanical adjustments required for Pi4B)

• Eleduino Store: http://www.eleduino.com/Aluminum-Case-for-ADS-B-Raspberry-Pi-Stratux-DIY-Kit-Black-p10625.html

868MHz Antennas (necessary to replace the 978MHz Nooelec bundle antenna)

• Taoglas: https://www.taoglas.com/product/ti-85-2113-2dbi-868mhz-terminal-mount-dipole-antenna/
• Delock: https://www.delock.com/produkt/88688/merkmale.html?f=s
• Prodrone: https://shop.prodrone.pl/en_US/p/ProFlex-Vee-868Mhz-915MHz/179 (make sure to select the appropriate frequency and connector)
• GliderDesignParts: http://www.gliderdesignparts.de/ant_flarm.en.html

1090MHz Antennas (as an alternative to the 1090MHz Nooelec bundle antenna)

• Prodrone: https://shop.prodrone.pl/en_US/p/ProFlex-Vee-868Mhz-915MHz/179 (custom order, you specifically need to order 1090MHz)
• GliderDesignParts: http://www.gliderdesignparts.de/ant_adsb.en.html

Antenna leg orientation remarks:

• all antennas need to be oriented vertically, in case of ProDrone and GliderDesignParts one antenna leg vertically, the other one horizontally
• only the Taoglas and the Nooelec bundle antennas are hinged so make sure to order an SMA adapter (angled) for all other antennas according to your needs
• both ProDrone and GliderDesignParts antennas can be custom ordered with either a straight or an angled SMA connector

868MHz transmitter module

• Lilygo T-Beam S3 Core u-blox M10S board: https://www.aliexpress.com/item/1005005418286231.html (please select CORE UBLOX 868MHz)
• a 7mm hole needs to be drilled for the 868MHz transmitter antenna pigtail connector
• the included GPS antenna needs to be attached outside of the case
• as an alternative you can use any other GPS antenna type (a U.FL/SMA female pigtail cable is required and a 7mm hole needs to be drilled)
• a short USB-A to USB-C cable is required to connect the module to the Pi's USB ports
• the transmitter module can simply be glued on top of the Pi copper heatsink

Baro

• Pimoroni: https://shop.pimoroni.com/products/bmp280-breakout-temperature-pressure-altitude-sensor?variant=15383480336467 (electric soldering iron required)

cooling

• Arctic Cooling Pads: https://www.arctic.de/en/TP-2-APT2560/ACTPD00003A
• put two cooling pads on top of each of the Pi's USB port metal cases
• 2mm copper heatsink for Pi3B/Pi3B+ https://www.aliexpress.com/item/1005001936477582.html
• 2mm copper heatsink for Pi4B https://www.aliexpress.com/item/1005001691525070.html

Mounting (optional, you need to drill two 5mm holes in the case bottom)

• Ram Mount: https://www.rammount.com/part/RAP-224-1U