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This unit is checked out and operational with the following installed
options:

* RF-5110MD High-Speed Data Modem. In the high-rate
39-tone mode, a channel transmission rate of 3466bps is
achieved by time differential phase shift keying (TDPSK)
of 39 tones which is combined with forward error correcting
to produce data rates ranging from 75 to 2400bps. The
modem is used during digital voice operation.

* RF-5120AFC Harris ALE Automatic Link Establishment.
Please note this is the Harris proprietary "Autolink"
ALE system. It will work with other systems containing
the same option but is not compatible with the MIL-STD-188-141 ALE
most often encountered on the ham bands.

* RF-5130LPC Digitized Voice. Uses the U.S. DoD LPC-10E
(Version 52) 2400bps algorithm.

* Serial Control Interface