Using the transceiver
Error! Main Document Only.-28 9480 HF SSB transceiver
Receiving an emergency call
When receiving a digital emergency call, the following occurs if reception of digital
emergency calls is enabled and the destination selcall ID was the receiving
transceiver’s ID, either of the two optional ‘Respond IDs’ or is within the range of a
10’s or 100’s call.
1. Transmits a siren sound for five seconds.
2. Displays ‘E-Call xxxx’ (just like an ordinary selcall but with ‘E-’ in front) on the
display, where ‘xxxx’ is the Self ID of the calling station.
3. The transceiver queues the received call in the call stack, keeping emergency
calls at the top of the stack.
4. Maintains an audible alarm sound for 5 minutes (or until user interaction occurs).
5 External alarm contacts pulse on and off at a rate of 350 ms for 5 minutes.
6. After the 5 minute period has expired, the transceiver generates the ‘called pips’
(every 4 seconds) as for normal unacknowledged selcalls.
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