ACR Electronics SR-102 GMDSS SURVIVAL RADIO 166 Product Support Manual page 14

d. Antenna height and range of communications are intimately related. In general, a
higher antenna will have a longer range than a similar lower antenna.
The typical range for a transmitting radio held at about 1.2 meters (4.0 ft) above
average water level is expected to equal 4.5 kilometers (2.8 statute miles). The
receiving shipborne antenna can extend the range if it is mounted high. Airborne
receivers greatly extend the above range (over 150 kilometers/100 miles for aircraft
flying over 1500 meters/5000 ft).
Because of the above fact, and to maximize the range of the survival craft VHF
radiotelephone, the unit should be held as high as possible without endangering the
safety of the operator.
COMMENTS (NOTES):
CALL SIGN: __________________________________________________________________
VESSEL: _____________________________________________________________________
BATTERY EXPIRATION DATE: ________________________________________________
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Y1-03-0079-1 Rev. B