HF-90 Operation & Installation Guide
Clarifier up/down scroll keys
The clarifier function allows you to adjust the quality of
audio (to obtain maximum intelligibility) by fine tuning the
pitch of the received signal. A clarifier adjustment may be
required when receiving a signal which is slightly off-
frequency. Clarifier does not work while the set is in
transmit mode and will not affect the transmit frequency.
The zero in the above display indicates that
the clarifier has not yet been adjusted - ie. it is
at zero level.
Press and release the CLAR (up) key again. This time the
display will appear as follows:-
This display shows that the clarifier has been
adjusted by +5 units.
Section 5.4
Adjusting clarifier
The CLAR keys on the HF-90 will adjust the clarifier by
increments of 5 units. The clarifier function enables a
maximum adjustment of ±100 units.
To adjust the clarifier level on your HF-90 in an upward
direction (thus increasing the receive frequency), press and
release the CLAR (up) key. The first time you press the
CLAR (up) key, the display will appear as follows:-
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