Yaesu FT-450D Manuale Utente
Page 33
FT-450D O
PERATION
M
ANUAL
RF GAIN
The RF Gain controls provide manual adjustment of the gain levels for the receiver RF and IF stages, to com-
pensate for noise and/or signal strength conditions at the moment.
pensate for noise and/or signal strength conditions at the moment.
The [SQL/RF GAIN] knob should, initially, be rotated
to the fully clockwise position. This is the point of maxi-
mum sensitivity, and counter-clockwise rotation will
gradually reduce the system gain.
to the fully clockwise position. This is the point of maxi-
mum sensitivity, and counter-clockwise rotation will
gradually reduce the system gain.
A
DVICE
:
As the [SQL/RF GAIN] knob is rotated counter-
clockwise to reduce the gain, the S-meter read-
ing will rise. This indicates that the AGC voltage
being applied to the receiver is increasing (which
causes a reduction in receiver gain).
ing will rise. This indicates that the AGC voltage
being applied to the receiver is increasing (which
causes a reduction in receiver gain).
Rotating the [SQL/RF GAIN] knob control to the
fully counter-clockwise position will essentially dis-
able the receiver, as the gain will be greatly re-
duced. In this case, the S-meter will appear to be
“pegged”. (That is a full-scale reading).
able the receiver, as the gain will be greatly re-
duced. In this case, the S-meter will appear to be
“pegged”. (That is a full-scale reading).
[SQL/RF GAIN] knob
C
ONVENIENCE
F
EATURES