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FM 11-23
b. The meteorological services and the military 4-18. Radio Netting Facilities
police activities in the COMMZ require facsimile The requirement for radio netting facilities
service. Therefore, the terminal facilities serving within ' the COMMZ is not as extensive as it is in
these activities will require facsimile equipment. the combat zone. The circuit and channel requirements
e. Encrypted terminal-to-terminal service for for radio netting make single channel mule.
tistation nets undersirable. The number of chanhard
copy traffic is required on both an on-line nels required precludes the use of conventional
and off-line basis. In addition, some user-to-user HF single sideband (SSB) systems; point-tovoice
encryption is required.
point multichannel links (command system) constitute
the most effective method of meeting the
4-1 7. WMessenger Feacilities
requirements for radio communications within
the COMMZ. Thus, each major headquarters in
The communications system for the COMMZ the COMMZ requires point-to-point multichannel
provides both local and long distance messenger radio links. The channel requirement can best be
service.
met
The local
by using
messenger
multichannel
service
troposcatter
delivers mesradio
met by using multichannel troposcatter radio
equipment. High frequency single sideband radio
sages in a relatively small area of the COMMZ equipment is provided as backup to selected troand
the long distance messenger service delivers poscatter links, to alert warning nets, and to stamessages
throughout the COMMZ.
bility operations control nets.
4-4