Raymarine RAY91 VHF, Инструкция по установке и эксплуатации

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The antenna must be isolated from the vessel’s metalwork using an insulated (e.g. plastic) mounting
bracket.
Multiple antenna installations
Important additional considerations when installing multiple antennas.
To prevent potential channel interference when installing two or more VHF radios on the same
vessel, ensure that the antennas are located at least 2.4 m (8 ft.) away from each other.
Loud hailer location requirements
To avoid audio feedback, ensure that the loud hailer is at least 3 m (9.8 ft) away from the VHF base
unit and any handset or fistmic at all times. When talking, ensure that the handset or fistmic is
pointing in the opposite direction to the loud hailer.
3.2 GNSS (GPS) location requirements
Your product includes a built-in GNSS (GPS) receiver that, in order to obtain a position fix, requires
connection of an external passive antenna, such as the GA150 antenna.
Ensure you follow the location requirements specified in your external antenna’s installation
instructions.
3.3 Wireless product location requirements
The optional wireless hub, handset and active speakers require further considerations when
selecting a mounting location
Wireless location requirements
A number of factors can influence wireless performance. It is important to ensure you test the
connection performance at the desired location before installing wireless-enabled products.
Distance
The distance between wireless products should always be kept to a minimum. Do not exceed the
maximum stated range of your wireless product (maximum range will vary for each device).
Wireless performance degrades over distance, so products farther away will receive less network
bandwidth. Products installed close to their maximum wireless range may experience slow
connection speeds, signal dropouts, or not being able to connect at all.
Line of sight
For best results the wireless product should have a clear, direct line of sight to the product it will be
connected to. Any physical obstructions can degrade or even block the wireless signal.
The construction of your vessel can also have an impact on wireless performance. For example, metal
structural bulkheads and roofing will reduce — and in certain situations — block the wireless signal.
If the wireless signal passes through a bulkhead containing power cables this can also degrade
wireless performance.
Reflective surfaces such as metal surfaces, some types of glass and even mirrors can drastically
affect performance or even block the wireless signal.
Interference and other equipment
Wireless products should be installed at least 1m (3 ft) away from:
• Other wireless-enabled products.
• Transmitting products that send wireless signals in the same frequency range.
• Other electrical, electronic or electromagnetic equipment that may generate interference.
Interference from other people’s wireless devices can also cause interference with your products.
You can use a third-party wireless analyzer tool / smartphone app to assess the best wireless channel
to use (e.g. a channel not in use or one used by the least number of devices).
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