15
9M02-8978-A002-EN
Version 14
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User Guide
Table 2: Frequencies Not Supported
AVOID FREQUENCIES
Band B
Band D
Band F
434,177,500
466,937,500
902,600,000
912,100,000
921,600,000
902,700,000
912,200,000
921,700,000
902,800,000
912,300,000
921,800,000
902,900,000
921,100,000
921,900,000
911,700,000
921,200,000
922,000,000
911,800,000
921,300,000
922,100,000
911,900,000
921,400,000
912,000,000
921,500,000
Cattron can supply support and help with frequency selection if they are provided with a list of frequencies
in use in the immediate operating location.
4.2 Site Planning
As far as is practical RF systems frequency separation should be at least as shown in the last column of
the
table below.
Table 3: Channel Spacing for Adjacent Systems
BAND
START FREQ
HZ
END FREQ
HZ
CH SPACING
KHZ
START
CHANNEL
END
CHANNEL
CH,
SPACING
A
418,000,000
B
433,077,500
434,777,500
25
A00
A68
2 (50kHz)
C
447,000,000
D
450,000,000
470,000,000
12.5
A00
Q00
4 (50kHz)
E
868,000,000
F
902,600,000
927,500,000
100
A00
C49
2 (200kHz)
NB: channels are identified on the equipment by a three digit identity xnn see columns 5 and 6 above.
Channels run A00 through A99, and then B00 through B99 etc. until the End Channel is reached.
For the purposes of adjacent system channel spacing we can use the figure in the final column.
This simplifies somewhat the method of determining what channels should be chosen on a site.
When all available channels have been used, (not likely with 450MHz or 915MHz band) with the
designated channel spacing we can start using intermediate frequencies (1 channel apart) provided that
they are 100m away from the systems 1 channel away.
