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Advanced features

HF SSB transceiver user guide 6-3

We suggest that when you enter an area you arrange to send a

test RFDS call to the base station. This will check that you

understand the correct call procedure and give you assurance

that the facility works properly.

How to contact the RFDS

To contact an RFDS base station, select the station primary

frequency and tune the antenna. Before transmitting, check

that the channel is not being used. To send the call, follow the

procedure in Chapter 4, Voice call.

Emergency communications

Each RFDS base station has its own specified times for

routine medical consultation. If during normal RFDS base

station hours medical advice is required and cannot wait until

the routine medical session, you should:

• wait until the first quiet moment on the channel

• call the base station by call sign, give your own call sign

and state that this is an urgent medical call.

On receiving this call, the RFDS base station will deal only

with the outstation seeking medical advice. Should the

channel be continuously busy with traffic, precede the above

medical call by a 30 second RFDS emergency alarm call.

If you need medical assistance when the RFDS base station is

normally closed, at night or at weekends, follow the

procedure on page 6-5, RFDS emergency call.

An RFDS base station hearing your call will respond within

two minutes with a transmitted tone. The local hospital or

police station will be notified that you need assistance. RFDS

staff will respond within five minutes of the call being

transmitted and ask you to identify yourself. You must then

respond accordingly.