Section Ten : Multiple Frequency & Use Charts; Uhf Frequency Code U922A [Usa] - SABINE TRUE MOBILITY WIRELESS SYSTEM SWM3000 Operating Manual

SECTION TEN : MULTIPLE FREQUENCY & USE CHARTS
10.1 UHF Frequency Code U3 [USA]
SWM-3000 UHF transmitters and receivers have both Group and Channel selector knobs. The channels
within each group have been arranged so that you can use up to 14 wireless units at a single location
without having the units interfere with each other.
In general, use channels from within the same group to avoid interference. For maximum
number of units, see Example #2 below.
EXAMPLE: The 8 channels within group 1 are all compatible. To use 8 UHF units at a single location,
set the receivers and transmitters as follows:
Transmitter/Receiver
unit #1
unit #2
unit #3
unit #4
unit #5
unit #6
unit #7
unit #8
EXAMPLE: To use the maximum number of 14 units together, use all 7 channels of GROUP 3,
plus all 7 channels of GROUP 4.
NOTE :
Frequencies in USA 900 MHz UHF Systems
1
1 914.275
2 915.150
3 914.250
4 915.075
Guide to new/old Frequency Code designations
U1 = U794A (786.275 - 801.925) U3 = U922A (904.275 - 928.5)
U U U U U
H H H H H
U2 = U808C (802.675 - 815.95)
F F F F F
V1 = VND1 (200.35 - 202.6)
V V V V V
H H H H H
V2 = VND2 (201.75 - 204.0)
F F F F F
GROUP
1
1
1
1
1
1
1
1
To avoid intermodulation distortion (IMD) interference, all transmitters must be kept at
least 5 meters from any True Mobility UHF receiver antenna.
CHANNEL (MHZ)
2 3
914.900 916.375 916.725
916.125 917.925 922.650
915.475 918.275 919.450
917.875 919.050 925.225
V3 = VPD2 (202.25 - 204.5) V5 = VPH5 (247.05 - 249.3)
V4 = VPE4 (215.2 - 217.45) V6 = VPH4 (245.8 - 248.05)
SECTION TEN : Multiple Frequency & Use Charts
CHANNEL
1
2
3
4
5
6
7
8
4 5 6
920.200 921.200
924.075 924.775
925.575 926.650
926.300 928.750
Minimum
distance to
receiver
7 8
926.800 929.875 3m
928.125 928.500
929.150 5m
929.925
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