Important Regulatory Information; Important Links - Eggtimer Rocketry Eggtimer TRS Assembly Manual

Important Regulatory Information

This device complies with Part 15 of the FCC Rules. Operation
is subject to the following two conditions: (1) this device may
not cause harmful interference, and (2) this device must
accept any interference received, including interference that
may cause undesired operation.
It is intended to be used ONLY for educational and
experimental use in Model Rockets and Class II/III amateur
High Power Rockets which are classified as aircraft by the
Federal Aircraft Administration (CFR 14 §101.25), and which
must by FAA and NFPA regulations be operated at least 1,500'
away from any populated buildings. Although unlikely, this
device may cause interference with consumer devices that
run on the unlicensed 902-928 MHz band, and therefore must
not be used in residential areas.
The Eggtimer TRS uses RF modules in the 902-928 MHz ISM band manufactured by Hope
RF, model HM-TRP-915. They are intended to be used in the United States or other countries
with similar RF band and regulatory rules. These modules have been tested by Hope RF to be
compliant with the FCC Part 15 regulations for non-licensed intentional emitters, and as such
have been permitted to be imported into the US. However, Hope RF (at the time of this
document) has not obtained formal certification with the FCC. As a hobby kit, designed for
educational and experimental purposes, the Eggtimer TRS is considered by the FCC to be
"generally exempt" from authorization requirements. Nonethless, we have made a good faith
attempt to comply with all technical regulations, and you should too by building it exactly as
per the instructions, and by using only the antenna on the transmitter module that we
recommend in the instructions, or a suitable replacement as outlined in the Appendix.
Because the Eggtimer TRS runs on an unlicensed band, there is no protection against
interference from other sources; basically, you get what you get. We've done substantial
testing and are confident that your Eggtimer TRS system is unlikely to be significantly affected
by outside radio sources, but there's no guarantee.
If your Eggtimer TRS causes interference in a residential setting, or with licensed radio
systems (such as TV or ham radio), you must stop using it until you correct the problem. This
is extremely unlikely given the small amount of power and the "tightness" of the transmitter's
output, and in particular the distance from any population that HPR rockets must be flown.
Nevertheless, you need to be aware of this, and be willing to abide by the rules. These are the
same rules that govern other non-licensed transmitters, such as cordless phones, WiFi and
Bluetooth® devices, and garage door openers.

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