FT-950
Operating Manual
Vertex Standard Co., Ltd.
57
system receiver gain in different ways. As a first step in dealing with high noise or
a crowded, high-level signal environment, the IPO generally should be the first
feature engaged, if the frequency is low enough to allow the preamplifier to be
bypassed. Thereafter, the RF Gain and Attenuator features may be employed to
provide precise, delicate adjustment of the receiver gain so as to optimize
performance fully.
Audio Pitch Control (SSB mode)
The FT-950 enables to adjust the receiver audio response by shifting the carrier point
during the SSB operation.
1. Press the [MENU] button to enter the Menu mode.
2. Rotate the [SELECT] knob to select Menu item “065 A3J LSB CAR” or “066 A3J
USB CAR”.
Advice: Press the [SELECT] knob to toggle the Menu item display between “Menu
Item Number & Group Name” and “Menu Function”.
3. Rotate the [CLAR/VFO-B] knob to adjust the desired receiver audio response.
4. Press and hold in the [MENU] button for two seconds to save the new setting and
exit to normal operation.
AGC (Automatic Gain Control)
The AGC system is designed to help compensate for fading and other propagation
effects, with characteristics that can be of particular value on each operating mode.
The basic objective of AGC is to maintain a constant audio output level once a certain
minimum threshold of signal strength is achieved.
Press the [AGC] button repeatedly to select the desired receiver-recovery time constant.
You will observe the AGC status notation in the AGC column of the Block Diagram
Display on the display, denoting the AGC receiver-recovery time currently in use. For
most operation, we recommend the “AUTO” mode. Additionally, you may disable the
AGC by pressing and holding in the [AGC] button for two seconds.
Note: Pressing the [AGC] button allows selection of the desired receiver-recovery time
constant. Normally, the “AUTO” selection is satisfactory for most situations, but in the
event of operation on a crowded band where you wish to receive a weak signal, you
may wish to change the setting (to FAST, for example). The AUTO mode selections are:
Operation Mode
AUTO AGC Selection
