Yard - Sixteen separate frequencies are designated as "yard" channels and named Yard-1 through Yard-16.
These are used for short range communication within the perimeter of an institution. Yard radios are
typically capable of operating on all sixteen channels but may be used only on those identified and
authorized at a particular location.
Complex - Four channels are named Complex-1 through Complex-4. Staff working on institution grounds
but outside of the yard perimeters uses these channels. Normally only one complex channel is licensed to
each institution. The complex channel licensed to the institution is the only one that may be used there.
TAC - Eight channels, named TAC-1 through TAC-8, are used for radio communication outside of
institutional boundaries. All TAC channels use mountaintop repeater stations for wide-area radio coverage.
Only one TAC channel (TAC-1) is used statewide. This is the Department’s primary administrative and
transportation channels, monitored by the Communications Center and all institutions. It is also used
for coordination of work crews in areas not served by a local TAC channel.
All other TAC channels are licensed for use in a specific, limited geographic area. To simplify operations,
newer radios display the name of the primary institution using the channel rather than a “TAC” number.
This gives an indication to the operator that the channel may only be used when near a particular
institution. TAC channels may not be used in car-to-car mode or otherwise when more than 50 miles
from an associated repeater station. The channels, primary institution served and coverage area are:
TAC-2: PERRYVILLE - White Tank Mountains; covers much of western Maricopa County.
TAC-2: SAFFORD - Guthrie Peak; covers eastern Graham and southern Greenlee Counties.
TAC-3: FLORENCE - Signal Peak; covers most of Pinal County and the southern part of Gila County.
TAC-4: DOUGLAS - Mule Mountain; covers southern part of Cochise County.
TAC-4: APACHE - Greens Peak; covers southern parts of Apache and Navajo Counties.
TAC-5: YUMA - Telegraph Pass; covers southwest Yuma County.
TAC-6: FORT GRANT - Heliograph Peak; covers southern Graham and northern Cochise Counties.
TAC-7: TUCSON - Keystone Peak covers most of Eastern Pima and Central Santa Cruz Counties.
TAC-8: Future Use
Inter-Agency - Used for communication with other law enforcement agencies in some counties. (Pima,
Pinal, La Paz and Gila Counties do have inter-agency systems.)
Special Use - Special channels, used by Tactical Support Units (TSU), and others are restricted to particular