Icom IC-746PRO Instruction Manual page 9

D What are you hearing?
Stop and focus on what you are hearing. Do you hear
a lot of noise? Is the signal intelligible? Are you set up
for the right mode? How about the filters?
1. Verify mode
Although your IC-746PRO will automatically select
USB or LSB in the HF bands, it will not select any of
the other modes. You will need to select the proper
mode whether CW, RTTY, AM or FM.
2. Reducing interference
Your IC-746PRO has many features to reduce QRM
and QRN from the desired signal.
a. Noise Reduction: The noise reduction system on
your IC-746PRO is part of the 32-bit DSP. This is
used to reduce the hiss and QRM levels. To acti-
vate, push the [NR] switch located just to the right
of the [PHONES] jack.
[NR] [NR]
A G C D U P C M P T B W S C P
b. Adjusting the Noise Reduction: The noise re-
duction is completely variable on how much of the
DSP Noise Reduction is used. Located just above
the [NR] switch, this is where the [NR] level con-
trol.
Hint!
The Triple Band Stacking Registers will memorize
the last three frequencies used in the band, as well
as the Mode, Filter, Tuner and AGC settings. Mak-
ing band hoping much easier.
Hint!
How much [NR] will depend on the S/N ratio, Signal
to Noise. Just using the [NR] may cause the signal
to become distorted. To keep this from happening,
using the [NR] along with the [RF GAIN] and Filter
bandwidths will allow you to zero in on the desired
signal with as little QRM as possible.
Appears
QUICK REFERENCE GUIDE
SSB CW/RTTY AM/FM
NR NOTCH
Decreases
Increases
OFF
Noise reduction ON
Noise reduction OFF
VI