Tracking Transmitter XFM1
Crystal controlled 147.455 MHz FM transmitter
The XFM1 transmitter is a crystal controlled tone modulated FM transmitter designed for model rockets locating but suitable for wildlife, balloons and many other applications requiring a small, frequency stable FM transmitter. Use this transmitter with a scanner or 2 meter amateur radio receiver. Transmitter ground range is approximately 400 yards (5 feet above ground) . Field tests were done with a ICOM IC-W32A transceiver with 0.16 micro volts of receiver sensitivity through the standard 8 inch antenna. Air to ground transmissions can improve range significantly (several miles) as will a directional high gain antenna or a more sensitive receiver.
Kit $15.00 USD E-Mail to:
Copyright ©,Jerry Baumeister
XFM1
Tracking Transmitter for 147.455 MHz Kit (2 meter ham band)...
$15.00 USD
(if no call sign is entered below, "XFM1" will be transmitted)
Frequency
147.455 – 147.460 Mhz - Crystal controlled. 2 meter ham band
Mode
FM
Transmission
15 beeps followed by call sign or "XFM1" in Morse code
Size
2”x5/8”
Antenna
12 inch, can be coiled
Weight
8 grams (0.3 oz) includes batteries
Battery life (using 2 BR1632 batteries)
4 days
Ground Range with counterpoise
1200 feet (5 feet above ground)
Air range
many miles (depends on receiver, antenna and altitude)
Use
Model rocket, model aircraft, balloons, wild life locating
Receiver
2-meter (144 – 148 MHz) receiver with at least 0.16 micro volts
sensitivity
Receiver Antenna
directional antenna recommended but not required.
Other
Knowledge of radio direction finding
Other
standard through-the-hole components
jerry_baumeister@msn.com
7-2-2015