HF-90 Operation & Installation Guide
At this point your display will appear as follows:-
This display shows that the Selcall is being
sent - ie. in transmit mode.
Several seconds after pressing the STAR key to send the
Telcall, you should hear a series of high pitched beeps. This
is the Telcall Confirmation being transmitted from the
Telephone Interconnect Station to let you know that your
Telcall has been received successfully. If you do not hear
the Telcall Confirmation you should repeat the procedure
outlined above, on the same channel or a new channel. If
your Selcall is not successful this may be due to
inappropriate frequency selection or excessive interference
(refer to Section 2.3 of this Guide).
If your Telcall is successful (ie. you hear the Telcall
Confirmation) you will hear the telephone ring at the other
end. This will take several seconds as the Telephone
Interconnect Unit has to complete its dialling. After the
person at the other end picks up the telephone, you will
generally have to wait for a start tone before proceeding
with your call.
Please note that communications will be in simplex mode (HF
radio mode) therefore you should inform the telephone user that
you are calling from an HF radio and that all speech should be
ended with the word “OVER”.
If the telephone at the other end is not picked up try again
later.
Important:
Telcall Hang-up
If your Telcall is successful and you have managed to get
through to the telephone user, you should complete the call
(ie. hang up) by pressing the HASH key twice.
35
Section 6.2
