User's Manual

ITCR Base Radio User's Guide
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6 Do Not Distribute 5/8/2013
included corresponds to all 5-kHz wide FCC channels numbered from 1 at 220.0025
MHz to 400 at 221.9975 MHz. Each Base radio transmission occupies five of the FCC-
defined 5-kHz channels. The lowest Base radio channel center frequency is in the
center of FCC channel 3 and the next is FCC channel 8, then 13, 18, and so on, up to
the highest in the center of channel 398.
In the USA only, the radio can be licensed and configured to operate on 56
additional (Part 80) frequencies in the ranges 217.6125 to 217.9875 MHz and
219.0125 to 219.9875 MHz.
3.2 Base Channel Restrictions
Section 90.715 of the FCC Rules lists the authorized frequencies of the 400 total 5
kHz-wide channels. According to §90.733(d) these can be aggregated into larger
channel widths with the exception of FCC channels 161-170 and 181-185.
Therefore, the Base radio may not transmit on those channels or their 221 MHz
counterparts, 361-370 and 381-385. This corresponds to Base frequencies,
220.8125, 220.8375, 220.9125, 221.8125, 221.8375, and 221.9125 MHz.
Please refer to Part 90 Subpart T and SRSP-512 for additional frequency use
restrictions in Canadian and Mexican border areas.
3.3 Base Radiated Power Limits
It is the responsibility of the licensee to comply with the effective
radiated power limits based on operating frequency, geographic location,
and effective antenna height set out in 47CFR Parts 80 and 90 or Industry
Canada SRSP-512 §6.3, as applicable.
Important: The following supplementary antenna system information discusses
means for the licensee to comply with regulatory power limits.
Licensees must comply with the specific power vs. HAAT limitations for fixed base
stations. U.S. and Canadian power limits differ in this regard.
Licensees should also note that fixed installations transmitting between 221 and 222
MHz must limit effective radiated power (ERP) to 50W or 10*log(50) + 30 = 47dBm