User's Manual

tant. However, if the antenna is not vertical when transmitting,

the beam will be angled either too high or too low (Fig 7.15) -

Instruction Manual

Part No. E04297

Fig 7.16 - Effect of heel on range of 1m marine antenna

Fig 7.15 - Effect of heel on range of longer whip antenna

Here the wider beam of the shorter antenna will be more uni-

versally effective, although the signal will be weaker (Fig 7.16) -

Therefore vessels with a large heel angle (small sailboats)

would be better choosing a short masthead antenna. Your

local agent should be able to provide speciﬁc advice on anten-

na choice for the vessel it is to be ﬁtted to.

WARNING The antenna coaxial cable and any connectors used must be

rated at 50Ω. Under no circumstances should standard domestic

TV cable and connectors be used. Incorrectly rated cabling and

connectors could result in power not reaching the antenna, but

also power could be reﬂected back into the radio, damaging it

in the process.

The quality of any connections and integrity of the cable (with-

out breaks in the sheathing) will directly affect the performance

of the radio. Poor soldering or corrosion of the terminals can

impair performance. We recommend that screw or crimp ter-

minal type connectors are not used for any through deck ﬁt-

tings - a good quality waterproof solder terminal connector will

be less susceptible to poor connection due to corrosion of the

contacts.