SM1003B Antenna Switch Matrix
The Asartech SM1003B is a high-power electromechanical RF switching unit for communications radios. It routes two radios to two antennas, providing manual selection and automatic operation through three selectable modes.
The ruggedized unit incorporates lightning, reverse-voltage and high-voltage protection. Automatic switching responds to radio receive and transmit status through the control connector, and a failsafe routing position provides a defined connection state. The design is rated for more than ten million switching cycles.
Specifications:
| Dimensions | 140 × 58 × 45 mm, excluding connectors |
| Weight | 0.35 kg |
| Power consumption | 2.5 W maximum |
| Frequency range | 30–512 MHz |
| RF power handling | 50 W maximum |
| Insertion loss | 0.7 dB maximum |
| J1–J2 isolation | 67 dB minimum |
| Switching time | 3 ms |
| Supply voltage | 28 V |
| VSWR | 1.1:1 maximum at 30–60 MHz; 1.58:1 maximum at 60–512 MHz |
