Emission Mask Requirements and Analog FM Capability

In this Report and Order, we adopt rules that guard against interference to critical public safety communications in the 800 MHz National Public Safety Planning Advisory Committee (NPSPAC) band (806-809/851-854 MHz) by confirming the emission mask applicable to digital transmissions in the NPSPAC band. We also take steps to enhance public safety system interoperability in the VHF, UHF and 800 MHz bands by specifying analog FM as the standard emission for use on all interoperability channels in these bands. In so doing we lessen the possibility that first responders will encounter harmful interference in the NPSPAC band and provide certainty to manufacturers concerning the capabilities required of radios used for interoperable communications.