Furuno FAX-30 manual Antenna Unit, General antenna connection, Wire antenna or whip antenna

7. INSTALLATION

7.2Antenna Unit

The performance of the facsimile receiver is directly related to the antenna installation. In general, the antenna should be installed as high as possible on the vessel, free from the influence of nearby antennas, rigging and masts. Be sure to locate the antenna well away from TX antennas and noise generating equipment. Pay particular attention to the antennas of MF and HF radio equipment - they can damage the facsimile receiver through induction. (For better protection against induction, use the preamp unit.)

7.2.1General antenna connection

Connect the antenna to the facsimile receiver as shown below. If the preamp unit is installed, set jumper block J23 on the RCV Board (in the FAX-30) to the "ACTIVE" position. See paragraph 7.4.

	Wire Antenna
	6 m Whip
2.6 m Whip Antenna	Antenna
Preamp	Select	Junction
	one.
		Box
(FAX-5)
Coaxial Cable
Facsimile	Facsimile
Receiver	Receiver
Preamp Used	Preamp Not Used

Antenna wiring and preamp status

7.2.2Wire antenna or whip antenna

•Either a long wire or whip antenna may be used. A wire antenna should be 15 meters or longer including the vertical section. A whip antenna should be 6 meters long.

•The antenna can be shared with other receivers; use an antenna switch or junction box.

•Connect the antenna to the facsimile receiver with a coaxial cable of which the diameter is larger than coaxial cable type 5D-2V. (5D-2V is a JIS (Japan Industry Standard) Cable. Use equivalent cable, referring to the table in paragraph 7.3.

•If sensitivity of the wire antenna is low, use the preamp unit.

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