2024-06-13 19:21:56 +00:00
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# About
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The communications project will deliver a balloon payload that allows
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receipt of [telemetry](https://en.wikipedia.org/wiki/Telemetry) and
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other payload data as well allow command of the balloon systems as
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needed. Communications are commonly delivered over [Amateur
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Radio](https://en.wikipedia.org/wiki/Amateur_radio) frequencies by
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licensed operators. Networks like
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[APRS](https://en.wikipedia.org/wiki/Automatic_Packet_Reporting_System)
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are favored for some balloon-related communication.
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These team members will also be responsible for ensuring one or more
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suitable ground stations are in place to reliably receive data from the
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communications systems. This team is encouraged to partner with the
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[HacDC Amateur Radio club](http://www.w3hac.org) and [other amateur
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radio organizations](http://www.arrl.org/find-a-club) and enthusiasts.
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This team will also facilitate logistical communications primarily for
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the launch and recovery teams.
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# Team Members
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- Derk
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- [Ethan Waldo](User:Ewaldo "wikilink") (licensed for Amateur Radio)
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- Martin (licensed for Amateur Radio)
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- Nancy Wolfson
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# Possible Balloon Communications
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- Primary VHF APRS tracker - sends regular APRS beacons with GPS and
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limited telemetry - use national 144.390 MHz network
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- Secondary UHF APRS tracker - sends regular APRS beacons with GPS and
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limited telemetry - use a frequency to be determined at the launch
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site
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- 13 cm Broadband Downlink - send realtime video or broadband data
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- uhf/vhf cross-band repeater - allow hams to communicate long distance
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with handy-talkies
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- 433 MHz ISM band low data rate telemetry
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# Possible Chase Team Communications
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- Cell phone WiFi for APRS.fi information
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- VHF and UHF APRS receiver, possibly tracking, text and digitpeating
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for off-grid operations
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- Primary Voice - cell phone
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- Secondary Voice - VHF and UHF mobile radios in conjunction with
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repeaters for off-grid operations operations
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# Possible Ground Station Communications
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- 13 cm broadband receiver/recorder with 90 cm dish
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- UHF/VHF receiver/recorder for SSTV
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- 433 MHz data receiver/recorder with yagi
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- Primary Voice - cell phone
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- Secondary Voice - VHF and UHF mobile radios in conjunction with
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repeaters for off-grid operations operations
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# Teensy All-in-one
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- [APRS Tracker using Teensy
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3.1](https://forum.pjrc.com/threads/24998-APRS-Tracker-using-Teensy-3-1)
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- [Teensy 3.2](https://www.pjrc.com/store/teensy32.html)
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- [TinyTracker GPS/GSM/CAN for Teensy
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3.1/3.2](https://www.tindie.com/products/Fusion/tinytracker-gpsgsmcan-for-teensy-3132/)
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- [10DOF MPU9250+MS5637 sensor addon for
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Teensy](https://www.tindie.com/products/Fusion/10dof-mpu9250ms5637-sensor-addon-for-teensy/)
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- [SPI Flash Memory Add-ons for Teensy
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3.X](https://www.tindie.com/products/onehorse/spi-flash-memory-add-ons-for-teensy-3x/)
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- [Radiometrix 500mW VHF Narrowband
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Transceiver](http://www.radiometrix.com/content/bim1h) (same as used
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in TinyTrak4)
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# Communications Links
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[Bionics TinyTrak 4](http://www.byonics.com/tinytrak4/) Likely primary
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APRS tracker - has limited telemetry capability [SainSonic TNC and 1 W
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transmitter](https://www.amazon.com/SainSonic-AP510-Transceiver-Bluetooth-Thermometer/dp/B00JLB94IS)
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[Arduino TNC using
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bertos](https://sites.google.com/site/ki4mcw/Home/arduino-tnc) [Arduino
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shield](http://wiki.argentdata.com/index.php?title=Radio_Shield) [Wouxun
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KG-UV8D instant cross-band
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repeater](http://www.amazon.com/Wouxun-KG-UV8D-Two-Way-Radio/dp/B00JYLMJ46)
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[in action](https://www.youtube.com/watch?v=y4UCx1sFor8) [our cute
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little Yaesu VX-1 UHF
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radio](http://www.yaesu.com/indexVS.cfm?cmd=DisplayProducts&ProdCatID=111&encProdID=783160E8AAE4642A8751C75821666E16)
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[433 MHz ISM band transceiver - 1 W, up to 256
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kbps](http://www.anarduino.com/details.jsp?pid=130) [APRS on your cell
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phone](https://aprsdroid.org/) [Bluetooth TNC for
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above](http://www.mobilinkd.com/) [Where is SB-6?](http://APRS.fi)
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[APRSISCE APRS tracking software for
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Windows](http://aprsisce.wikidot.com/) [Direwolf TNC software for
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Windows and Linux/PC/RasPi](https://github.com/wb2osz/direwolf) [xastir
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APRS tracking software for
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Linux/PC/RasPi](http://xastir.sourceforge.net/) [SoundModem TNC software
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for Linux/PC/RasPi](http://www.linux-ax25.org/wiki/Soundmodem)
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[Radiometrix Transmitters & RF Modules](http://www.radiometrix.com/)
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[LoRa modem and 434 MHz radio shield for
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2024-06-13 01:48:44 +00:00
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RasPi](https://store.uputronics.com/index.php?route=product/product&path=61&product_id=68)
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