Technical Manual

Company Confidential 12 Raveon Technologies Corp.
4.3. Heatsinking
The M6 operates at up to 25% transmit duty cycle at ambient temperatures up to
60°C. For duty cycles up to 100%, the module requires additional heat sinking and
airflow.
If an external heat sink presses against the “GND PAD” are of the PCB, the RF power
transistor will run cooler, and allow higher duty cycles.
4.4. Mounting Holes
6 mounting holes are provided on the module. For best RF performance, the M6
module should be mounted to the system ground, using metal stand-offs.
4.5. STAT LED Outputs
An external dual-color LED may be connected to STAT1 and STAT2 pins to show the
status of the modem. Do not connect the LED to power or ground! Connect the LED
as show below.
Because the STAT2 signal is also used to put the modem into the “bootloader’ mode,
the led must be wired as shown above to ensure a reliable start-up. The Red LED will
blink when the modem transmits, and the green LED will blink on receive of data. It
will also blink orange when decoding a POCSAG message.