Watkins-Johnson Company R1910, Руководство пользователя

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Repeater Installation
2-11
Notice how simple the deployment is. No combiner or dual polarized antenna is required. This
method is the lowest cost method but sacrifices output power.
The intermodulation products produced with Method 2 will look something like Figure 3.
Figure 3
The 2 large signals depict the carriers (Freq 1 & Freq 2). The other signals are intermodulation
products (A, B, C) created by these two signals. What is important for the FCC is to keep the level
of these intermodulation products below -13dBm outside your licensed band. The FCC does not
regulate Spurious within your frequency band (although your air interface may require that in-band
spurious levels in your system be kept below a certain level.). The power of the intermodulation
products decreases as the intermodulation product increases (A>B>C). See the charts below to
ensure that you are not exceeding the FCC requirements.
The following tables and charts should be used to verify proper operation of the method 2
multicarrier configuration.
Carriers Spaced "X" MHz apart
Difference between Freq 1 and
Lower Band Edge
Difference between Freq 2
and Upper Band Edge
Freq 1 Freq 2
A
B
C
A
B
C
Your PCS Band