User's Manual

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System Configuration Introduction – p. 19
1.4.4 Modems with DOCSIS and IP Only With Built in UHF Radio
The V284 modem is a basic V280 modem integrated with a built-in UHF radio
that provides an upstream RF output in the 710-716 MHz range. Internally the
V284 has a factory set intermediate frequency of 44MHz which is converted up to
yield an appropriate upstream frequency (This is preset at the factory for 700MHz
in the United States).
The downstream frequency ranges from 740-746MHz. Note that the RF setup of
this radio requires appropriate preplanning owing to the complexity introduced by
the internal UHF radio. Please reference the UHF System Installation Guide
and/or your local system engineer.
Figure 1-7: V284 Modem