System Part Number: 900-0782-81, -91
Document P/N: 551-0782-81, Rev C1
December 2014
Installation Guide
Peninsula Engineering Solutions may change specifications as necessary to meet industry requirements. © 2014 Peninsula Engineering Solutions, inc.
Mounting
The UHF Transmitter Assembly mounts
inside the repeater door or in a 19-inch rack
below the RF Repeater. The unit is 8U high.
Figure 2, RMAS UHF Tx in RF Repeater
Antenna
A 902 ~ 928 MHz or 2400 MHz directional
antenna should be installed on the tower or
antenna support structure that also mounts
the microwave antennas. Normally, the UHF
path is parallel to one of the microwave
paths and Line-of-Sight is expected.
Antenna feedline can be 3/8” or ½” Foam
Filled Coax terminated in a Type-N(f)
connector at the radio end.
The gain of the antenna and feedline
combination may be limited by regulations.
The 900 MHz maximum EIRP is +36 dBm
by US-FCC regulations. With the transmitter
set at low power, 100mW or +20 dBm, the
antenna gain – feeder loss must not exceed
16 dBi. If the highest power setting is used,
1-Watt or +30 dBm, the net gain limit is
6dBi. The radios transmit power may be set
in 1 dB increments from +20 to +30 dBm for
900 MHz and +20 to +27 dBm for
2400 MHz.
Lightning Arrestors are recommended.
Transmit Power
Recommend using the 100mW, +20 dBm
lower power setting for LOS paths. The
lower power setting also reduces the DC
current load and is best for solar powered
sites.
Peninsula’s UHF antenna kits use 12 dBi
gain antennas and 3/8-inch or ½-inch coax.
At typical 50-Ft feedline plus the jumper at
the alarm equipment has 2 dB of loss. In this
case, the maximum output power setting is
+26 dBm.
UHF Transmitter Settings
The GE MDS NETio radio has been factory
set for the application. If changes are
required, see the section Admin Access to
the GE MDS NETio following or the GE
MDS NETio manual for details, 05-4457A01,
Rev D or later, PES PN 551-0790-01.
Figure 3, UHF Tx Antenna Cable
Peninsula Engineering Solutions, inc. Telephone +1 925 837-2243
POB 1095 Facsimile +1 925 837-2298
Danville, California 94526, USA Internet www.peninsulaengineering.com
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