4
RECEIVING AND TRANSMITTING
4-2
Convenient for receiving
D All operating modes
Preampliers and Attenuator (p. 4-3)
Use one of the Preampliers when receiving weak
signals and use the Attenuator to prevent distortion
when receiving strong signals.
Notch Filter (p. 4-9)
Automatically attenuates beat tones, tuning signals,
and so on.
• In the SSB or AM mode:
Use the Auto notch or Manual notch.
• In the CW or RTTY mode:
Use the Manual notch.
• In the FM mode:
Use the Auto notch.
RX HPF/LPF (p. 12-3)
Sets the receive audio high-pass lter and low-pass
lter cutoff frequency in 100 Hz steps.
» SET > Tone Control/TBW > RX
D SSB, CW, RTTY, and AM modes
Noise Blanker (p. 4-8)
The Noise Blanker eliminates pulse-type noise.
Noise Reduction (p. 4-9)
The Noise Reduction function reduces random noise
components and enhances desired signals that are
buried in noise. The DSP (Digital Signal Processor)
does the random noise reduction.
AGC (p. 4-4)
The AGC (Auto Gain Control) controls the receiver
gain to produce a constant audio output level, even
when the received signal strength greatly varies.
Twin PBT (p. 4-5)
To reject interference, the Twin PBT (Passband Tuning)
electronically narrows the IF passband width by shifting
the IF frequency slightly outside of the IF lter passband.
D SSB, AM and FM modes
Receive Audio Tone Control (p. 12-3)
You can adjust the receive audio bass and treble.
» SET > Tone Control/TBW > RX
D SSB-D, CW and RTTY modes
1/4 function (p. 3-5)
The dial speed is reduced to 1⁄4 of the normal speed,
for ner tuning control.
D CW mode
Auto Tuning (p. 4-16)
The transceiver automatically tunes the desired signal
within the ±500 Hz range.
Convenient for transmitting
D SSB, AM and FM modes
VOX function (p. 4-10)
The VOX (Voice-Operated Transmission) function
switches between transmit and receive with your
voice. This function provides hands-free operation.
Transmit Monitor (p. 4-11)
The Monitor function enables you to monitor your
transmit audio.
Audio Tone Control (p. 12-3)
You can adjust the transmit audio bass and treble.
» SET > Tone Control/TBW > TX
D SSB mode
Speech compressor (p. 4-12)
The speech compressor increases average RF output
power, improving signal strength and readability.
Transmitter Filter Width (p. 4-14)
You can select WIDE, MID, and NAR compression
bandwidths.
» SET > Tone Control/TBW > TX
D CW mode
Break-in function (p. 4-15)
You can use the Break-in function to automatically
switch the transceiver between transmit and receive
when keying. The IC-7300 is capable of Full Break-in
and Semi Break-in mode.
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