Applications - Two Way Radio
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Two Way Radio - | |
| C801 ARM7 Selcal / Sequential Tone Calling Module Pictured opposite is our selcal (5 Tone / Sequential Tone Calling) pcb module. The ARM7 runs a small DSP filter for each tone, and a small processing algorithm to decode the tones into a sequence. The pcb is very small, and can be used with a ribbon cable connector, or as a daughter board on an application PCB as shown. The ARM7 also has a real time clock, and we have brought out several pins to the I/O connector, including analog and serial pins. The ARM7 can be loaded with further application software to send a call on detection of an event, or to drive relays. This module can be used in many applications, including base site control, remote site reporting / alert on event systems, and integrates straight into analog radio systems. |  |
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