Attenuator - Icom IC-7600 Instruction Manual

■ Preamplifier
The preamp amplfes receved sgnals n the recever
front end, to mprove the S/N rato and senstvty.
Set ths to preamp 1 or preamp 2 when recevng
weak sgnals.
➥ Push [P.AMP] (MF3) several tmes to set the pre-
amp OFF, preamp 1 ON or preamp 2 ON.
➥ Push and hold [P.AMP] (MF3) for 1 sec. to turn the
preamp functon OFF.
For all HF and 50 MHz bands
Hgh-gan preamp for 24 MHz band
and above (Avalable for all HF and
50 MHz bands)
✔ About the "P.AMP2"
The "P.AMP 2" s a hgh gan receve amplfer. When
the "P.AMP 2" s used n the presence of strong elec-
tromagnetc felds, dstorton sometmes results. In
such cases, use the transcever wth the "P.AMP 1" or
"P.AMP OFF" settng.
The "P.AMP 2" s most effectve when:
• Used on bands above 24 MHz and when sgnals are
weak.
• Receve senstvty s nsuffcent when usng low-
gan antennas, or whle usng a narrow band
antenna (such as small loop, a Beverage antenna
or a short Yag antenna).

■ Attenuator

The attenuator prevents a desred sgnal from dstor-
ton when very strong sgnals are near the desred
frequency or when very strong electromagnetc felds,
such as from broadcast statons near your locaton.
➥ Push [ATT] (MF4) several tmes to set the attenua-
tor 6 dB, 12 dB, 18 dB or attenuator OFF.
➥ Push and hold [ATT] (MF4) for 1 sec. to turn the
attenuator functon OFF.
6 dB attenuaton
12 dB attenuaton
18 dB attenuaton
RECEIVE AND TRANSMIT
P.AMP
ATT
4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
72