FT-950
Operating Manual
Vertex Standard Co., Ltd.
56
3. Rotate the [CLAR/VFO-B] knob to select the setting that most effectively reduces
the noise level. The “DNR” icon will appear in the display.
4. Press and hold in the [MENU] button for two seconds to save the new setting and
exit to normal operation.
To disable the DNR system, just repeat the above procedure, rotating the
[CLAR/VFO-B] knob to select “OFF” in step 3 above. The “DNR” icon will turn off,
confirming that the DNR system is not active.
Advice: The Digital Noise Reduction will be memorized independently on each VFO
stack of the VFO-A and VFO-B.
RF Gain (SSB/CW/AM Modes)
The RF Gain controls provide manual adjustment of the gain levels for the receiver RF
and IF stages, to account for noise and/or signal strength conditions at the moment.
1. The [RF GAIN] knob should, initially, be rotated to the fully clockwise position.
This is the point of maximum sensitivity.
2. Counter-clockwise rotation of the [RF GAIN] knob will gradually reduce the
system gain.
Advice:
As the [RF GAIN] knob is rotated counterclockwise to reduce the gain, the S-meter
reading will rise. This indicates that the AGC voltage being applied to the receiver
is increasing (which causes a
reduction in receiver gain).
Rotating the [RF GAIN] knob control to the fully counter-clockwise position will
essentially disable the receiver, as the gain will be greatly reduced. In this case, as
well, the S-meter will appear to be “pegged” against the right edge of the analog
S-meter scale.
Quick Point:
Reception frequently can be optimized by rotating the [RF GAIN] knob slightly
counter-clockwise to the point where the incoming noise level is just about the
same as the “stationary” meter needle position as set by the adjustment of the [RF
GAIN] knob. This setting ensures that excessive gain is not being utilized, without
so much gain reduction that incoming signals cannot be heard.
The RF Gain control, along with the IPO and Attenuator features, all affect the