Tone (Select 5) Transmit Deviation - Motorola GM-950 Manual

Midband (66-88MHz) Tuning Procedure
7. Click the Toggle PTT button to dekey the radio.
8. Repeat steps 4 - 7 for the remaining test frequencies.
9. Click the Program button to store the softpot values.
.
1.11

5 Tone (SELECT 5) Transmit Deviation

The 5 Tone (SELECT 5) Deviation Softpot is used to tune the SELECT 5 signalling deviation. Tuning
is performed at one frequency. The radio generates the required tones while the tuning window is
open. Values for other frequencies are calculated by the radio software. If the radio supports 20 or
25 kHz channel spacing selection, the procedure must only be performed for 25 kHz channel
spacing. Values for 20 kHz channel spacing are calculated by the radio software.
1. From the Service menu, select Tx Alignments.
2. Select Signalling Deviation to open the signalling deviation tuning window. This window is used
to set the values for 12.5 kHz radios and the 25 kHz data for 20/25 kHz radios.
3. Click the Toggle PTT button to key the radio. The status bar will indicate that the radio is
transmitting.
4. Adjust the transmitter deviation to the value shown in table 2-6.
5. Click the Toggle PTT button to dekey the radio.
6. Click the Program button to store the softpot values.
.
5C.2-8
Table 2-5 Transmitter Deviation.
Channel Spacing
12.5 kHz 2.2-2.3 kHz
20 kHz 3.4-3.6 kHz
25 kHz 4.3-4.6 kHz
Table 2-6 Signalling Deviation.
Channel Spacing 5 Tone (Select 5)
12.5 kHz 1.6-1.8 kHz
20 kHz 2.6-2.9 kHz
25 kHz 3.3-3.7 kHz
Deviation
Radio Tuning Procedure