8 Introduction TM9400 Specifications Manual
© Tait Limited November 2016
FCC Narrowbanding Regulations
The following information applies to all radios, not just to those sold in
countries where FCC regulations apply.
From 1 January 2013 it is an FCC requirement that land mobile radio
systems must not operate channels with a bandwidth greater than 12.5kHz
in the 150–174MHz and 421–470MHz frequency bands. From this date
all radios will be supplied with firmware that requires a software feature
license to operate a medium or wide bandwidth channel in these frequency
bands.
The 20/25kHz Unrestricted Wideband feature license is available to any
customer who is not subject to the relevant FCC regulations, or who has an
FCC waiver. Note that this feature license is not required to operate a
medium or wide bandwidth channel on the spot frequencies which are
exempt from the FCC requirement:
■ 152.0075, 157.450, 152.480, 157.740 and 158.460MHz in the
150–174MHz frequency band
■ 462.750, 462.775, 462.800, 462.825, 462.850, 462.875, 462.900,
462.925, and 465MHz in the 421–470MHz frequency band.
To obtain the feature license, or for more information about it, contact your
regional Tait office.
If your network is in the 700MHz band and falls under the jurisdiction of
the FCC, you may be required to move to P25 Phase 2 operation so as to
obtain a spectrum efficiency equivalent to 6.25kHz per channel.
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