Raymarine Ray101 Manuale Utente Scaricare il pdf (Pagina 2)

Below, from left to right: Standard

Horizon HX471S, Icom IC-M88,

Icom IC-M72, West Marine VHF 250,

Standard Horizon HX500S, Stan-

dard Horizon HX600S,

Standard Horizon HX370S,

Raymarine Ray101.

andheld VHF radios come in

handy for a variety of tasks

aboard any boat. On small skiffs,

they serve well as the main method

of communicating—and you don’t

have to worry about the mounting,

antenna, and wiring issues associ-

ated with a ﬁxed-mount radio. On

larger vessels with a ﬁxed-mount

VHF already installed, handhelds

can serve as a viable backup radio or

as a means of two-way communica-

tion if the dinghy is launched. When

used as a backup, your handheld can

even connect to the boat’s main an-

tenna via an adapter and signiﬁcantly

increase your transceiver range.

What We Tested

To keep our reports reasonable in both

scope and size, as well as to make fair

comparisons, we’ve divided coverage

of handheld VHF radios into two

groups. In this review we’ll report on

upper-echelon units that sell for more

than $175. Next time, we’ll cover less

expensive radios. Our lineup includes

two units from perennial VHF leader

Icom (models IC-M72 and IC-M88),

four from Standard Horizon (mod-

els HX370S, HX500S, HX600S, and

HX471S), the Ray101 from Rayma-

rine, and the West Marine VHF 250.

How We Tested

The ﬁrst order of business was to

charge the batteries, which we did us-

ing the associated AC chargers. Next,

we ran each radio through a series

of bench tests, including transmitter

power output, frequency accuracy

and stability, and receiver sensitivity.

We used a sophisticated piece of radio

test gear, a Ramsey COM3010 com-

munications service monitor.

Maximum power output on a

portable handheld marine radio is

limited to 5 or 6 watts. A low-power

setting, 1 watt, for harbor use, is

also available. In addition to the

high- and low-power settings, most

of the radios we tested had a mid-

power setting. We tested only at

the max power and 1 watt. We took

transmitter power measurements

directly off the radio antenna port

located on the top of each radio.

Frequency accuracy is deﬁned as

Expensive Handheld VHF Radios:

Standard Horizon Edges Icom

With its solid performance, multi-band reception, and DSC emergency-

calling capability, the Standard Horizon HX600S takes top honors.

The radios from Icom had the longest battery life.

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Raymarine Ray101 Manuale Utente Pagina 2

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