Icom IC-R7000 Instruction Manual

8-3 RF/IF UNITS
BPF, RF Amp Circuits-----'
20dB Attenuator Circuit--------
R F Unit-----------4~:\i
IC2 (T.A7303P FMw---------:
Detector, Limiter Circuits)
IC5 (}.IPC577H FMn ----------,
Limiter Amp)
IF Unit _____________ .,
BFO Circuit------------
~~---_:_--1st LO Amp, Mixer Circuit
~~~---------1st IF Amp
'---------25- 512MHz IF Filter
,---------- 512 - 1 OOOMHz IF Filter
------2nd LO Amp, Mixer Circuit
-----------2nd RF Amp
-------1Q.7MHz Crystal Filter
--------Noise Blanker Circuit
--------455kHz 3rd IF Filter
~-----3rd LO Amp, Mixer Circuits
~------- J8 (AM Filter Selector
Connector)
*The connector is pre-set for
WIDE IF
passband position at factory.
J8 0 NAR
~~I WIDE
8-4
MAIN UNIT
.------------ IC2 (NJM4558D FM Center Meter
VSC Control Circuitl
IC8 (}.IPC1241H AF Amp!---------------'
8-5 PLL UNIT
IC3 (M54929 Programmable Divider!-------------.
IC7 (HD10551 1/10 Di
X2 (51.2MHz Crystal for
PLL Reference Osc)
-33-
IC5 (NJM4558D Signal Center
frequency Detector Circuit)
IC1 (NJM4558D VSC Amp)
IC7 (Noise Squelch Control
Circuit)
Relay for Recording Remote
Function
'----------IC6 (NJM7809A Voltage Regulator)
Unit
Doubler for 1st LO Output
---IC4 (M54466L 1/10, 1/11
Pre-scaler)
----X1 (12MHz Crystal for
D/A Converter)
'-------------Mixer Circuit

Icom IC-R7000 Specifications

General

Brand	Icom
Model	IC-R7000
Category	Receiver
Language	English