Noise Blanker; Vox Operation; Antenna Tuner - Icom IC -765 Instruction Manual

7-4 NOISE BLANKER OPERATION
[МВ] [NB LEVEL]
[NB WIDE]
7-5 VOX OPERATION
[VOX] : IN [VOX DELAY] : CCW
[VOX GAIN] : CCW
7-6 ANTENNA TUNER OPERATION
[TUNER] [RTTY/N]
[METER] : SWR
FUNCTIONS OPERATION Т
The noise blanker effectively reduces interference from
pulse-type noise such as car ignitions and wide pulse-type
noise known as "woodpecker" noise.
1) Push the [NB] switch IN.
2) Adjust the [NB LEVEL] control as required depending
on the noise level.
3) To suppress "woodpecker" noise and other wide pulse-
type noise, push both the [NB] and [NB WIDE] switches
IN.
VOX (voice-operated relay) operation lets you key the
transmitter to your voice.
1) Set the front panel controls as shown at left.
2) While speaking naturally into the microphone, rotate the
[VOX GAIN] control clockwise until you key the
transmitter.
3) To adjust the transmit-to-receive switching time, adjust
and [VOX DELAY] control.
4) To prevent speaker audio from tripping the VOX, adjust
the [ANTI-VOX] contro! located under the hatch cover.
This tuner matches the ІС-765 to an antenna including the
feedline when its SWR is less than 3:1 (impedance 16.7 ~
150 Q).
1) Push the [TUNER] switch IN.
2) Set the [METER] switch to the [SWR] position.
3) Push the [RTTY/N] switch to select RTTY mode.
e This is for continuously transmitting RF power.
4) Set the frequency on which you plan to operate.
5) Set the [RF PWR] control to the 9 o'clock position for
an output of more than 10 W.
6) Transmit for several seconds.
eThe [WAIT] indicator lights while the tuner is
matching.
- When the [WAIT] indicator goes out, the tuner
matches at 50 22.
- When the [WAIT] indicator blinks, the tuner has not
lowered the SWR. Re-adjust the antenna.
7) Verify the SWR on the meter, then stop transmitting.