Spectra Logic TAC/COM SERIES User Manual
Page 17
SM06 Rev. 4.10
Tac/Com Control Head Manual
1.3.5
Frequency 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.
1.3.5.1
Frequency 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.
1.3.5.2
Channel 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
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ENG-FORM: 800-0108.DOT
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