– Frequency coverage: 215.000-216.999MHz and 218.000-218.999MHz

– Frequency steps: 1 kHz

– Fine tuning: + or – 500Hz from channel center

– Sensitivity: -150dBm

– Input impedance: 50 ohms

– Selectivity: 70dB down @ 4 kHz

– Frequency stability: + or – 100 Hz, -30 to +60 degrees C, TCXO controlled

– Mode of operation: SSB, CW

– IF filtering: 10.7MHz, 12 pole 2.2 kHz crystal filter, 455 kHz 8 pole ceramic filter

– Front end: Dual MOSFET with 6 helical resonators

– Image rejection: greater than 65dB, falls in interference free UHF aircraft band (225.7 MHz to 229.7 MHz)

– Attenuator (RF Gain Control): 3 position switchable 0, -20dB, -40dB

– Antenna jack: standard BNC female

– Headphone jack: standard 3.5mm miniature monaural

– External power jack: standard circ., 5.5mm x 2.1mm, center positive

– Operating temperature: -25 to +65 degrees C

– Battery life: Alkaline, 3-4 hours @ 50 degrees F or above : Rechargeable NiMH, 2-3 hours @ 20 degrees F or above

– Size: 6.2″x3.5″x1.4″, less projections

– Overall size with antenna folded: 12″x4.75″

– Overall size with antenna extended: 20.25″x11.25″

– Weight: 18oz without antenna, 31oz with antenna

– Supplied with pistol grip Yagi antenna that allows one handed operation, detaches and can be used alone, and folds for easy carrying

– Also supplied with soft case, 12vdc power cable, 9v battery, and operating manual




General: Dual conversion, superheterodyne, synthesized receiver

Dimensions: Height 2 inches, width 3 inches, Length 14 inches

Weight: 2 pounds

Frequency Range:


Frequency coverage: 215.000-219.999MHz

Frequency steps: 1 kHz

Fine Tuning: +/- 1.3 KHz continuously variable w/ analog control

Center Frequency Variation relative to Specified Frequency: Less than +/- .5 KHz.

Long Term Frequency Drift: .2 KHz

Power Supply: 12-14 VDC through external power jack. 9V (internal, using six AAA batteries)

RF Impedance: 50 ohms

Sensitivity: Typical minimum discernable input level: -150 dBm. Input level for 10 dB S+N+D/N –131 dB maximum. Noise Figure: 2.5 dB typical with 50 ohm source.

Image Rejection: > 45 dB

Spurious Emissions: < .2 nW



Beam Width: 38 Degree 3dB Down Point

Gain: 6 dBd

Front to Back Ratio: 14 dB


Project Lifesaver International – Program Implementation Costs

Radio vs. GPS
GPS is the most accurate navigation system in the world, but the navigation signals are very weak and can be difficult to locate in blocked environments. The clients that are registered with Project Lifesaver do not exhibit traditional lost person characteristics and often do not realize they are, in fact, lost. Oftentimes, they will wander into areas where GPS signal penetration is very poor such as underground parking, dense bush or inside structures.

The transmitter used by Project Lifesaver has an approximate 1.6 km range under ideal conditions. The transmitter uses pulse carrier wave frequency technology to emit a signal once every second. The receiver and antennae are used to detect the signal and then to physically locate the transmitter worn by the client.