User's Manual

AXELL D-MBR 3007-3008-PS NFPA REPEATER

PRODUCT DESCRIPTION AND USER’S MANUAL

FCC RF Exposure Limits

This unit complies with FCC RF exposure limits for an uncontrolled environment. This

equipment can only be installed in in-building applications, driving passive or active DAS

systems. All antennas must be operated at a minimum distance of 44

cm between the

radiator and any person’s body.

Antenna Installation

Installation of an antenna must comply with the FCC RF exposure requirements. The

tenna used for this transmitter must be mounted on permanent structures.

Signal boosters must be deployed such that the radiated power of the each retransmitted

channel, on the forward link and on the reverse link, does not exceed 5 Watts effective

radiated power (ERP).

Therefore the max antenna gain allowed for this type of signal booster should be limited

to the values given by equation (1) for the service antenna and equation (2) for the donor

antenna

Equation (1) - Max SERVICE antenna gain

Max SERVICE antenna gain (dBi) = 37dBm[EIRP] – (33dbi – 10log(N)(dB) – cable loss in dB).

For example:

No. of Antennas Cable Losses Max Allowed Antenna Gain

4 2 37 - (33+6-2) = 0 dBd

1 2 37- (33+0-2) = 6 dBd

10 2 37- (33+10-2) = -2dBd

Note :0dBd = 2.15dBi

Equation (2) - Max DONOR antenna gain

Max DONOR antenna gain (dBi) = 37 – (27dbi - cable losses in dbi).