Codan 8525B Series Handbook page 68

Using selective call
Step Action... Display shows...
7. Press
Selective
Call
8. If the call was
successfully
received and
decoded, within
25 seconds you
will hear a
revertive signal
comprising of a
number of short
tones.
5-16
Remarks...
You will hear a 'warbling'
sound for approximately
10 seconds.
You will hear no sound if
it was a group call.
Normal transmission can
now commence.
q
Outback HF Radiophone