Sailor RT4722 Installation Manual - 2.2
Manual is about: VHF-DSC DUPLEX
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Installation
RT4722
2.2
Power Supply
The standard power supply for the VHF unit is 12V DC.
For 24V DC supply an external power supply with the type number N420 can be used. The N420 is in
principle a 24V DC to 13.2V DC serial regulator.
For 110V AC, 127V AC, 220V AC or 237V AC operation, an external power supply with the type number
N163S must be used together with N420.
Fuse
The fuse is a standard 10A mini car fuse. There is a spare fuse in the power cable connector.
2.3
Aerial
All common 50 ohm aerials which cover the used frequency range with a reasonable standing wave ratio, maximum
1.5, can be used.
The aerial is connected to the set by means of a 50 ohm coaxial cable with low loss, e.g. RG213U. At the cable end
a PL259 plug is mounted.
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