Who is affected?
The FCC narrowbanding rules affect all operators of land mobile radios (LMR) that use channels between:
- 150 and 174 MHz
- 421 and 512 MHz
What will happen?
Wideband LMR systems (i.e., two-way voice radio operating on the 25 kHz channel-widths that
have been the standard for the last few decades) will experience increasing interference as
other radio operators switch to narrowband channels that may overlap older wideband channels.
(Note: interference issues may already be noticeable.)
As of January 1, 2011, all new radios sold in the US must be narrowband-capable – thus MY2011 radios/buses may not be able to communicate with wideband LMR systems.
As of January 1, 2013, LMR systems still using wideband channels risk:
- loss of radio communications
- substantial FCC fines
- revocation of FCC licenses