4-4 Operating AM
Å RECEIVING
➀
Push a band key to select the desired band.
➂ Push [AM/FM] to select AM.
• Pushing [AM/FM] toggles between AM and FM opera-
tion.
➂ Rotate [AF] to set audio to a comfortable listening
level.
➃ Rotate the tuning dial to set the desired frequency.
• S-meter indicates received signal strength.
• The default tuning step for AM mode is 1 kHz; this can
be changed using tuning step program mode (p. 16).
✔Convenient functions for receive
q Preamplifier and attenuator (p. 38) The preamp amplifies received signals in the front end
circuit to improve the S/N ration and sensitivity.The at-
tenuator prevents a desired signal from distorting
when very strong signals are near the desired fre-
quency or when very strong electric fields, such as
from a broadcasting station, are near you.
w Noise blanker (p. 39) The noise blanker is used to reduce wide pulse-type
caused by vehicle ignitions and key clicks from strong
CW signals on nearby frequencies. In some cases,
using the noise blanker may cause receive audio dis-
tortion.Turn the noise blanker off in such cases.
e Noise reduction (p. 40) The noise reduction function reduces noise compo-
nents and picks out desired signals which are buried
in noise.The received AF signals are converted to dig-
ital signals and then the desired signals are separated
from the noise.
r Auto notch filter (p. 40) The auto notch function automatically attenuates more
than 3 beat tones, tuning signals, etc., even if they are
moving.
r Twin PBT (passband tuning) (p. 41) The PBT function electronically narrows the receiver’s
IF passband widths to reduce interference. Moving
both [TWIN PBT] controls to the same position shifts
the IF.
t AGC (auto gain control) (p. 39) The AGC controls receiver gain to produce a constant
audio output level even when the received signal
strength is varied by fading, etc.
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