Motorola ASTRO SPECTRA Service Manual

6881076C20-E February 3, 2003
Radio Alignment Procedure: ASTRO Digital Spectra and Digital Spectra Plus Tuner Software 6-17
2. Left-click the desired frequency field (starting with the highest frequency shown).
3. Left-click the PTT Toggle button on the screen to make the radio transmit. The screen
indicates whether the radio is transmitting.
4. Measure the transmit power of the radio with a service monitor.
5. Adjust the softpot value until the required power, as shown in
Table 6-4, is indicated on the
service monitor.
6. Repeat the above process for all frequencies and all power levels.
7. Left-click the Program (Digital Spectra) or Program All (Digital Spectra Plus) button on the
screen to dekey the radio and save the tuned values.
Left-click the Close button on the screen to return to the Transmitter Alignments menu.
Table 6-4. Transmit Power Settings
VHF Rated Output Power** Min. Level Max. Level
10-25W 10.5W 28W
25-50W 26.5W 56W
50-110W 54W 113W
UHF Rated Output Power* Min. Level Max. Level
6W 6W 7W
10-25W 10.5W 28W
20-40W 20.5W 45W
78W 76W 80W
15W 16W 19W
50-110W 54W 110W
800 MHz Rated Output Power** Min. Level Max. Level
15W 15W 20W
35W (Repeater Mode) 37W 42W
30W (Talkaround Mode) 32W 42W
*These transmit power settings are used for Digital Spectra radios only.
**These transmit power settings are used for both Digital Spectra and
Digital Spectra Plus radios.

Motorola ASTRO SPECTRA Specifications

General

Frequency Range	136-174 MHz, 403-470 MHz
Number of Channels	Up to 255
Channel Spacing	12.5 kHz, 20 kHz, 25 kHz
Modulation	FM
Operating Temperature	-22°F to +140°F (-30°C to +60°C)