Motorola ASTRO SPECTRA User Manual

Cable Diagrams: Standard Cables
46 6881086C22-B
Notes: * Denotes active low signal
† Denotes TRC signal name
Table 21. Control Head Cable
Pin Number
Signal
Control Head J2
1 1 VSENSE1 (N/C)†
22N/C
33N/C
4 4 VSENSE2 (N/C)†
5 5 ANA_GND (DIG_GND)†
66N/C
77N/C
8 8 ANA_GND (DIG_GND)†
9 9 BUS+
10 10 BUS-
11 11 A+
12 12 SWB+
13 13 BUSY
14 14 SWB+
15 15 IGN
16 16 RESET
17 17 VO3
18 18 VI3
19 19 HUB* (N/C)†
20 20 VI1
21 21 VO1
22 22 VO2
23 23 N/C
24 24 N/C
25 25 N/C (RESET/PTT*)
†
26 26 MIC_LO
27 27 N/C
28 28 HUB
29 29 N/C
30 30 CTRL_HD_MIC
31 N/C
32 N/C
33 N/C
34 N/C

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)