SM06 Rev. 4.10

Tac/Com Control Head Manual

1.3.5Frequency Data Considerations

Tac/Com controls have an intelligent editor that prevents incorrect data entry when programming frequencies for a given agile radio. VHF radios can receive only valid VHF frequencies; UHF radios only UHF frequencies at the correct intervals, and so on. This greatly eases operator use, and prevents many common pilot errors. The C-1000 permits many types of incorrect entries for radios because of its thumbwheel entry system. This intelligent editor is especially useful when the Tac/Com control head has been set to emulate a C-1000 (i.e., channel any Flexcomm radio), as it detects the range of the radio as the data is being entered, and then restricts subsequent information to correspond to the exact radio type.

Radios in each band-split have specific channel interval assignments (by law), and are typically on 25 kHz, 15 kHz, 12.5 kHz, 6.25 kHz, 5 kHz or 2.5 kHz intervals. Which multiples are possible depends on the design of the radio's synthesizer circuitry, history and restrictions of the country of operation. Tac/Com automatically picks the correct multiples for each radio type based on the stored installation data, and ensures that only valid choices are possible for the operator.

If the operator enters invalid data via either external data entry or other procedure, the control will advise of this error. User intervention is then required to correct the data before proper radio operation can be achieved.

1.3.5.1Frequency Programming

There are three ways to program channel data into a Tac/Com control head:

a)From the front panel controls (edit mode).

b)From a DTE12 Keyboard/Data Unit (edit mode, Tac/Com II only).

c)From a PC via NAT's data loading software & the system serial port.

1.3.5.2Channel Selection

There are three ways to select a channel on a Tac/Com control head:

a)From the front panel controls.

b)From the remote select switches (Tac/Com II only).

c)From a DTE12 Keyboard/Data Unit (Tac/Com II only).

Jan 4, 2006

Page 1-9

ENG-FORM: 800-0108.DOT

 

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