Справочник Пользователя для Moseley Associates Inc 08MUD1F
3-7
Installation
602-13729-01 Rev B
Expedio Digital Electronic News Gathering Radio
3.8 Antenna/Feed System
3.8.1
Antenna
Installation
For compliance with FCC RF Exposure requirements the following has to be adhered to:
1. All antenna installation and servicing is to be performed by qualified technical personnel
only. When servicing the antenna, or working at distances closer than those noted below,
ensure the transmitter has be disabled.
ensure the transmitter has be disabled.
2. Typically, the antenna connected to the transmitter is a directional (high gain) antenna,
fixed-mounted on the side or top of a building, or on a tower. Depending upon the
application and the gain of the antenna, the total composite power could exceed 20 to 61
watts EIRP. The antenna location should be such that only qualified technical personnel
can access it, and that under normal operating conditions the antenna separation from
the user is required to be located at the distance of 3.5meters or more.
application and the gain of the antenna, the total composite power could exceed 20 to 61
watts EIRP. The antenna location should be such that only qualified technical personnel
can access it, and that under normal operating conditions the antenna separation from
the user is required to be located at the distance of 3.5meters or more.
3. 15.21 Information to user. – The users manual or instruction manual for an intentional or
unintentional radiator shall caution the user that changes or modifications not expressly
approved by the party responsible for compliance could void the user’s authority to
operate the equipment.
approved by the party responsible for compliance could void the user’s authority to
operate the equipment.
EIRP at the antenna is calculated as follows: -
Transmit power – Cable loss + Antenna Gain = EIRP
E.g.
+31.1dBm – 6dB(for 100m LDF5-50A) +36dBi = 61.1dBmi