User's Manual

Page 14 FRH-SD07TU/TB Manual

the diversity reception feature as a remedy for to multipath fading

problems. For diversity reception, install the two antennas as far

is not

ere use. Please use antenna without any unexpected

force (bent or broken). Mount the antenna in a location where it will

The FRH-SD07TU/TB operates at frequencies in the 2.4 GHz band.

hese frequencies are much directional than lower frequencies and are

asily reflected. If there are metal structures nearby, the effective

range may be shortened or the directional properties may be further

, mount the antenna as far away as

etallic structures.

ems are present, moving the antenna as little as 10 cm

y result in improved communication or, conversely, a further

and

apart as possible in order to gain maximum benefit (Actual

recommendation is 30 cm, 6 cm at least).

FUTABA standard antenna is made by Printed Circuit Board. It

fabricated for sev

be least likely to be damaged by contact with other objects or

equipment.

CAUTION

narrowed. To help avoid this

possible from surrounding m

Multipath problems occur easily at 2.4 GHz frequencies. When

multipath probl

diminished or total loss of communication. Futaba recommends that

the mounting position of the antenna be determined after testing

verifying optimal communication conditions. Negative multipath

effects can also be overcome with antenna diversity. See p.12

DIVERSITY ANTENNA SETUP

and the related register settings for more

details regarding antenna diversity.

2.5.3 M ultiple FRH

must be mounted at least 6 feet (2

meters) apart. Failure to do so may severely reduce the modem

using the FRH-SD07TU/TB and other wireless products in the same

Modems I nstallation Prec autions

When installing multiple FRH (series) modem systems that will use

different frequency groups in the same area, modem’s antennas of

different frequency groups

operating range.

Please contact Futaba for information about antenna separation when

area.

CAUTION

Rev. 050415-01.1