Specifications

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 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 315 MHz band, and therefore must not be used in
residential areas.
The Eggtimer Remote Switch uses a generic “PT2272” receiver module in the 315 MHz
unlicensed “remote control” band. It is intended to be used only in the United States or other
countries in which this band (or a subset of it) is not subject to licensing. As a hobby kit,
designed for educational and experimental purposes, the Eggtimer Remote Switch is
considered by the FCC to be “generally exempt” from authorization requirements.
Nonetheless, 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 that
we recommend in the instructions.
Because the Remote Switch 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 Remote Switch is unlikely to be significantly affected by
outside radio sources, but there’s no guarantee.
If your Eggtimer Remote Switch 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 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 and unintentional emitters)
http://www.ecfr.gov/cgi-bin/text-
idx?SID=adb12f74b498e43ec453f7899d9df0fd&node=47:1.0.1.1.16&rgn=div5