Codan Radio MT-3 - Manual (Page 16)

USER GUIDE | MT-3 ANALOG RADIO SYSTEMS
Chapter 2: Technical Information Page 8
FREQUENCY PROGRAMMING
Synthesized
MT-3 synthesized radio modules are capable of 16 channel operation. The channel selection operation
is described further in Chapter 5.
The MT-3 synthesized receiver and transmitter modules operating frequency may be selected in
standard channel increments through either four internal BCD rotary switches, or by the synthesizer’s
internal memory that can be programmed for 15 preset frequencies.
In order to set the desired frequency for each channel, a four digit code is used to represent each
available frequency. The four digit code is used internally in the synthesizer to generate the desired RF
frequency. This four digit code is found in the Channel Designation Tables that accompany the receiver
or transmitter Instruction Manual. The Channel Designation Tables cross reference each frequency
with a code number.
The code number can be found by looking up the desired frequency, noting the code number (Chan.
Num.) located to the left, and programming this new value. For example, in a receiver, a frequency of
132.14500 MHz translating to code number (Chan. Num.) 0709, can be programmed.
Table 2-1: Channel Designation Table Example
(1) If Channel 1 is selected the synthesizer will scan the four digit code from four BCD switches mounted
on the main circuitboard of the receiver or transmitter module. On newer modules the most signifi cant
BCD switch is hexadecimal, allowing for frequency steps in 5 KHz increments at 2.5 KHz offsets.
(2) If Channel 2 through 16 is selected, then the frequency is established by the preprogrammed four
digit code entered in the synthesizer’s internal memory. The internal memory is normally programmed
at the factory, but can be fi eld programmed using the CP-SC-3 synthesizer channel programmer module
(see Chapter 5 for more information on the synthesizer channel programmer).
Chan. Freq. Chan. Freq. Chan. Freq. Chan. Freq. Chan. Freq. Chan. Freq.
Num. (MHz) Num. (MHz) Num. (MHz) Num. (MHz) Num. (MHz) Num. (MHz)
0680...... 132.00000
0681...... 132.00500
0682...... 132.01000
0683...... 132.01500
0684...... 132.02000
0685...... 132.02500
0686...... 132.03000
0687...... 132.03500
0688...... 132.04000
0689...... 132.04500 0690...... 132.05000
0691...... 132.05500
0692...... 132.06000
0693...... 132.06500
0694...... 132.07000
0695...... 132.07500
0696...... 132.08000
0697...... 132.08500
0698...... 132.09000
0699...... 132.09500 0700...... 132.10000
0701...... 132.10500
0702.......132.11000
0703.......132.11500
0704...... 132.12000
0705...... 132.12500
0706...... 132.13000
0707...... 132.13500
0708...... 132.14000
0709...... 132.14500 0710...... 132.15000
0711 ...... 132.15500
0712...... 132.16000
0713...... 132.16500
0714...... 132.17000
0715...... 132.17500
0716...... 132.18000
0717...... 132.18500
0718...... 132.19000
0719...... 132.19500 0720...... 132.20000
0721...... 132.20500
0722...... 132.21000
0723...... 132.21500
0724...... 132.22000
0725...... 132.22500
0726...... 132.23000
0727...... 132.23500
0728...... 132.24000
0729...... 132.24500 0730...... 132.25000
0731...... 132.25500
0732...... 132.26000
0733...... 132.26500
0734...... 132.27000
0735...... 132.27500
0736...... 132.28000
0737...... 132.28500
0738...... 132.29000
0739...... 132.29500
VHF Receiver Channel Designation Tables 132 - 150 MHz 5 KHz Increments