User's Manual

Spread Spectrum Wireless Data Transceiver User Manual
LUM0002AG Rev A Version 7.0 29
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900MHZ FREQUENCY ZONE – THIS SETTING ONLY NEEDS TO BE SET ON THE MASTER RADIO
Frequency Zone: The idea of frequency zoning is to divide the available band (902MHz to 928 MHz) into
smaller bands, in this case 16 smaller bands each consisting of 5, 7, and 8 Frequency channels depending
on the frequency zone. These 16 Zones are stored in a Word, which is made up of 16 bits numbered 0-15.
These bits when displayed LSB to MSB directly represent the zones that the radio will operate on from
lowest frequency to highest. A value of ‘1’ in the bit sequence will instruct the radio to operate within the
represented band. Likewise, a ‘0’ value will instruct the radio to bypass the represented band. This feature
should only be used with the standard hop table.
Note: The Hop Table Version must be set to 0 when using Frequency Zones. If another Hop Table
Version were to be selected, the limitations of that selection would be applied to the hopping
pattern as well. For example, if Hop Table Version 3 were selected, only the middle of the band
would be available in the pattern. Then, if Frequency Zones 5, 6, 7, 8 and 9 were set to 0 no
allowable frequencies would be available for the radio to use.
Binary Zone Number (LSB First) Beginning Freq. (MHz) Ending Freq. (MHz) Number Of Channels
0 902.2464 903.8592 8
1 904.0896 905.4720 7
2 905.7024 907.0848 7
3 907.3152 908.6976 7
4 908.9280 910.3104 7
5 910.5408 911.9232 7
6 912.1536 913.5360 7
7 913.7664 915.1488 7
8 915.3792 916.7616 7
9 916.9920 918.6048 8
10 918.8352 920.2176 7
11 920.4480 921.8304 7
12 922.0608 923.4432 7
13 923.6736 925.0560 7
14 925.2864 926.6688 7
15 926.8992 927.8208 5
Frequency Zones are activated through the Setup menu. To enable zoning from the main Setup menu of
the radio:
1. Select Menu 3 “Edit Radio Transmission Characteristics”
2. Select Option 0 “FreqKey”
3. Select F “For More”
4. Select Option 3 “Frequency Zone”
Enter 1 to enable desired frequency zone and a 0 to disable desired frequency zone. Frequency Zone
entries begin with 0 (LSB) and continue through 15 (MSB).