User`s manual
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Important Links:
FCC Part 15 (governing unlicensed intentional emitters)
http://www.ecfr.gov/cgi-bin/text-
idx?SID=adb12f74b498e43ec453f7899d9df0fd&node=47:1.0.1.1.16&rgn=div5
Hope RF HM-TRP Documentation (FCC test documentation)
http://www.hoperf.com/upload/rf/HM-TRP-915(20dBm)-FCC.pdf
FAA Regulations for Amateur Rocketry (Part 101)
http://www.ecfr.gov/cgi-bin/text-
idx?c=ecfr&rgn=div5&view=text&node=14:2.0.1.3.15&idno=14
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Before You Start…
• Go to our web site at www.Eggtimerrocketry.com and download the latest Release Notes.
• Go to our web site at www.Eggtimerrocketry.com and download the latest Assembly and Users
guides.
• Read them thoroughly before starting… it will save you some grief later, we promise!
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Thanks for buying an Eggtimer TRS Flight Computer! The Eggtimer TRS is a Total Recovery
System for hobby rocketry. Like other flight computers, it can deploy two parachutes to bring
your rocket safely to the ground, and you can record flight statistics and download your flight
profile to a computer, to get a nice graph of your flight. It also uses a GPS module and a 900
MHz license-free transmitter to broadcast your rocket’s location in real-time to a computer or
tablet, or the Eggfinder LCD handheld receiver. With appropriate GPS tracking software, which
is available for free on the Internet, you can actually track your rocket in flight, and ultimately
find out exactly where it landed. You can program the flight settings with either a USB data
cable, or wirelessly with an Eggfinder LCD handheld receiver.
Like other Eggtimer Rocketry products, we sell it as a kit, to keep costs down and provide an
outstanding value. This means that you have to do a little work, of course, but considering that
most hobby rocketeers who would use our products have some degree of electronics expertise,
this should not be much of an impediment. If you do not have any experience soldering kits or
working with small electronic projects, we recommend that you ask around… chances are that
somebody in your rocketry club would be more than happy to assist you for a small bribe
(beverages work well!).