User's Manual

21
Fastfind Max and Fastfind MaxG Specification
General
Approved to COSPAS-SARSAT T.007 Class 2, TAC-184
Internationally type approved, a list of current type approvals is held in
the Fastfind Max section of the McMurdo Ltd web site;
www.mcmurdo.co.uk
Complies with relevant clauses EN 60945
RTCM 76-2002/SC110-STD V1.1
Operating temperature range -20 °C to +55 °C
Storage temperature range -30 °C to +70 °C
Operational life, Class 2 48 hours minimum at –20 °C
Battery type, Class 2 11 V lithium iron disulphide
Battery expiry 5 year storage life
Battery change User replaceable
Electrical
406.037 MHz transmitter
Frequency 406.037 MHz +1 kHz
Output power 5 W+2 dB
Data encoding Bi-phase L
Modulation Phase modulation; 1.1 rads +0.1 rads
Transmission time 520 ms +1% GPS, 440 ms +1% non-GPS
Repetition period 50 secs +2.5 secs
121.5 MHz transmitter
Frequency 121.5 MHz +3 kHz
Output power 50 mW +3 dB PERP
Transmit duty cycle 100%
Modulation format 3K20A3X
Modulation frequency sweep 1300 Hz to 350 Hz
Modulation duty cycle 41%+5%
Morse code modulation Letter ‘P’ (programming option)
Sweep repetition rate 3 Hz +1 Hz
Sweep direction Programmable UP or DOWN
GPS receiver/engine
(Fastfind MaxG only)
Centre frequency Band L1 1.57542 GHz
Received signal sensitivity -175 dBW minimum
Maximum number of satellites
tracked
12
Indication of GPS position Visual