SIMREX DataMover ESS, User Manual, Page: 165 / 188

SIMREX MAN.ESS-01, Rev. F DataMover ESS User’s Guide 157
SIMREX Corporation
dB fade margin, and a mix of agricultural and commercial ter-
rain with line of sight.
Range calculations for mobile units assume a 6 dBd gain Omni
on a 100 ft tower at the AP, a 5 dBd gain Omni with 1 watt
output power at 6 ft height, a 10 dB fade margin, and 90% con-
fidence with near line-of-sight in a mix of agricultural and com-
mercial terrain.
Actual performance is dependent on many factors including
antenna height, blocked paths, and terrain.
6.4CHANNEL HOP TABLE
The DataMover ESS transceiver’s hop table consists of 80 channels,
numbered 0 to 79 as listed in
Table 6-4 . Center frequencies are calcu-
lated as follows (where Fn is the center frequency of channel n):
Fn = 902.5 MHz + n*316.5 kHz
The DataMover ESS-II transceiver operates on the same channel assign-
ments, but because the modulation bandwidth is 600 kHz instead of
316.5 kHz it is recommended that the installer restrict channel usage to
every other channel for units operating in the same area.
NOTE: Channels 24, 26, and 55 are not used.
Table 6-4. Channel Hop Table
Zone Channel Frequency
1 0 902.5000
(ESS FHSS lowest channel)
1 1 902.8165
(ESS-II DTS lowest channel)
1 2 903.1330
1 3 903.4495
1 4 903.7660
1 5 904.0825
1 6 904.3990
1 7 904.7155
2 8 905.0320
2 9 905.3485
2 10 905.6650
2 11 905.9815
2 12 906.2980
2 13 906.6145
2 14 906.9310
2 15 907.2475