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HX300EPage 6
3. ABOUT THIS RADIO
3.1 ABOUT THE VHF MARINE BAND
The radio frequencies used in the VHF marine band lie between 156 and
158 MHz. The marine VHF band provides communications over distances
that are essentially “Line of sight” Actual transmission range depends much
more on antenna type, gain and height than on the power output of the trans-
mitter. On a xed mount 25 W radio transmission expected distances can be
greater than 25 km, for a portable radio transmission the expected distance
can be greater than 8 km in “Line of sight”.
The user of a Marine VHF radio is subject to severe nes if the radio is used
on land. The reasoning for this is you may be near an inland waterway, or
propagation anomalies may cause your transmission to be heard in a water-
way. If this occurs, depending upon the marine VHF channel on which you
are transmitting, you could interfere with a search and rescue case, or con-
tribute to a collision between passing ships. For VHF Marine channel assign-
ments refer to section “10. VHF MARINE CHANNEL ASSIGNMENT”.
3.2 ABOUT WATER RESISTANCE
The HX300E is only submersible
when the Battery Cover is latched and the
Charge (CHG) Cover is snapped closed.
IPX8 Specication for submersibility: 1.5 m for 30 minutes.
3.3 DISTRESS AND HAILING
(
CHANNEL 16
)
Channel 16 is known as the Hail and Distress Channel. An emergency may
be dened as a threat to life or property. In such instances, be sure the trans-
ceiver is on and set to “Channel 16”. Then use the following procedure:
1. Press the PTT (Push-To-Talk) switch and say Mayday, Mayday, May-
day. This is _____, _____, _____” (your vessel’s name).
2. Then repeat once: “Mayday, _____” (your vessel’s name).
3. Now report your position in latitude/longitude, or by giving a true or mag-
netic bearing (state which) to a well-known landmark such as a naviga-
tion aid or geographic feature such as an island or harbor entry.
4. Explain the nature of your distress (sinking, collision, aground, re, heart
attack, life-threatening injury, etc.).
5. State the kind of assistance your desire (pumps, medical aid, etc.).
6. Report the number of persons aboard and condition of any injured.
7. Estimate the present seaworthiness and condition of your vessel.
8. Give your vessel’s description: length, design (power or sail), color and
other distinguishing marks. The total transmission should not exceed 1
6


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