Kenwood TR-7400A User manual

http://www.Datasheet4U.com

Your KENWOOD Model TR-7400A is a high-quality 2-meter transceiver for use in ama-
teur radio mobile stations as well as base stations
.
It contains a PLL frequency syn-
thesizer developed and engineered through KENWOOD's elaborate VHF technology to
provide high performance and outstanding technical characteristics
.
The TR-7400A is capable of transmitting or receiving F3FMsignals on up to 800 Chan-
nels at intervals of 5 kHz. having 25W RF output power
.
CONTENTS
SPECIFICATIONS ........................................... 3
FINAL TRANSISTOR SPECIFICATIONS ........................... 4
BLOCK DIAGRAM .......................................... 5
CIRCUIT DESCRIPTION ...................................... 6
PARTS ALIGNMENT ......................................... 11
PC BOARD
PA UNIT (X45-1090-10)
................................... 13
PD UNIT (X50-1380-10) ................................... 14
VCO UNIT (X50.1370.10) .................................. 15
INDICATOR UNIT (X54-1210-10) ............................ 16
RX UNIT (X55-1150-10) .................................. 17
TX UNIT (X56-1230-10) ................................... 18
PARTS LIST ............................................... 19
PACKING .................................................. 25
DISASSENIBLY ........................................ 26
TROUBLESHOOTING ........................................ 29
LEVEL DIAGRAM ........................................ 32
ADJUSTNIEIUTS ............................................ 33
SCHEMATIC DIAGRAM ...................................... 40

SPECIFICATIONS
GENERAL
Semiconductors
Frequency Range
Frequency Synthesizer
Synthesizer Stability
Mode
Number of Channel
Operating Temperature
Power Voltage
Grounding
Antenna lmpedance
DC Current
Dimension
Weight
Transistors 58
FETs 8
ICs 19
Diodes 63
144.00to 147.995MHz
Digital (TTL Logic) control of phaselocked VCO
Lessthan k750 Hz at 25"~
FM
800
-20 to +50°c
11.5 VDC to 16.0 VDC
(13.8 VDC
as reference)
Negativegrounding
50
52
Lessthan 1A in receivewith no input signal
Lessthan 8A in transmit (HI)
Lessthan 4.5A in transmit (LOW)
(at 13.8 VDC)
182 mm (7-3116") wide
74 mm (2-718") high
270
mm (10-518") deep
Approx. 2.8 kg (6.2 Ibs.)
TRANSMIT SECTION
RF Output Power High 25 watts (min.)
Low approx. 5 watts (adjustableup to 15watts)
Modulation Variable reactancedirect shift
Max. Frequency Deviation
k5 kHz
Spurious Radiation Lessthan -60 dB
Touch Tone Input Impedance 600
52
Microphone Dynamic microphone with PTT switch, 500 52
RECEIVE SECTION
Circuitry
Intermediate Frequency
SquelchSensitivity
PassBandWidth
Selectivity
(2 Signal)
ImageRejection
SpuriousInterference
lntermodulation
Audio Output
OPTION
i) Tone Squelch
Tone Deviation
EncorderResponse
FrequencyStability
Tone SquelchOpenSensitivity
Tone Distortion
ii) Tone Burst
Burst Time
Double superheterodyne
1st IF 10.7 MHz
2nd IF 455 kHz
Lessthan 0.4 pV for 20 dB quieting
(Lessthan 1 ,uVfor 30 dB SIN)
Lessthan 0.25 ,uV
Morethan 12 kHz
at 6 dB down
More than 72 dB at 30 kHz of adjacentchannel
More than 70 dB
Morethan 60 dB
Morethan 66 dB
Morethan 1.5 watts across8
52 load (10%distortion)
k0.5 kHz (adjusted)
Lessthan 0.5 sec.
Lessthan 21%
Less than SlNAD 10 dB
Less than 5%
Approx. 0.5 sec.(adjusted)
NOTE: The circuit and ratings may changewithout notice due to developmentin technology.

Final Transistor (2N6083) Specifications
Maximum Ratings
TA = 25O~(Unless otherwise specified)
Characteristics Standard TA
= 25OC (Unless otherwise specified.)
Item
Unit
Ratings
V cso
V
36
Symbol
VCEO
V
18
LTPD level
Condition
5
5
~FE
Cob
VEBO
V
4
Minimum
1
1
VCE
= 5V, IC = 1A 5 5 1
/
VCB = 15V, f =0.1 MHz 1
Standard value
Maximum
5
Vcc
= 12.5 V, POUT=30W
) 5.7 dB 10 1
f = 175 MHz,
Vcc
= 12.5 V, POUT=30W
rl 1 65 % 10 1
f
= 175 MHz,
ICES VCE= 15 V, TC
= 55OC 10 mA 5 1
I
c
A
4
Unit
VCB
= 15 V
ICBO
1 -
rn A
BVCES Ic
= 15 mA V
PD
TA=~~"c
W
65
BVCEO
BVEBO
-
Stud
torque
inIb
6.5
Ic
= 100 mA V
-
Tstg
"c
-65 to
200
-
IE = 5 mA 4
,
V

BLOCK DIAGRA!
RX UNlT (X55-1150-10)
r- ----------- - --------------- --------
I
I
I
I
L ,,-,---,-----------, +--<&--,
RXA LR - TS SMI s1 S2 S3 TI0
PLL
r-----------b sau VRA
I VCO UNlT (X50-1370-10) '
I I
TX UNIT (~56-1230-10) TXB
SELECTOR
I
ZSC458 2SC458
BURST
a V
T-----~---- -1
- - -- - - - -.(b
I I I
T'
I
I I114171919151
I
-
POWER SW
TLR-313x6
J L--------,-
DISPLAY UNIT (X54-1210-10) 13.8V
DISPLAY UNIT(X54- 121 0- 10)
r---------- 1
I
I
DEC. DRIVER
I
SN7447AN X 3
-t 600
SWITCH BOARD (BCD 400-799)
I I
VCO UNlT (X50-
r------
- - - - - - - - - - -- - - - - - - - -- -
I ~lvl~-N(1/537- 1/936) pw MC74416X3 zsc460 BUFF AMP
I
2SC460 ZSC460
I A ! I
I
TX OFFSET LOGIC
P.D MC4044P
l OkHz
A I
' 1
2.56MHz 160kHz
I
, REFOSC,l/2 1/16 1/16 1~15%
UNIT T
I TD3400 H TD3493 TD3493 2~~733
(~50-1380-10) 22% -- - - - - - - - - - ------ - - - - -- - -

UNIT (~50-1370-10)
_ _-_--- --- ---- -------
1
I
----------
--------
I
I TX, RX
I MIXER
I
D
I

k,*,j
The block diagram of the TR-7400A is shown in page Fig.
2 shows the frequency relationship of the system.
5. Afr and Af,! are the frequency deviations of the REF OSC
The TR-7400A incorporates new1y developed circuit and LOCAL OSC respectively. You will seehow the VCO
techniques such as a PLL frequency synthesizer asthe local frequency changeswith the deviations and
N preset in the
oscillator. programmable counter.
PLL CIRCUIT
The block diagram is given in Fig. 1.
The circuit is outlined below. The outputs of the VCO
and LOCAL OSC are mixed together and converted to
5.37
-- 9.36 MHz signal and divided to 1/537 -- If936
with the programmable counter to obtain a 10 kHz output.
The phases between the 10 kHz output and another 10
kHz signal obtained by demultiplying 5.12 MHz REF OSC
output to 11512, are compared. And the phase difference,
if any, is fed back to the VCO to lock it. The stability of
this function is determined by the LOCAL OSC and REF
OSC, and the stability of the VCO is virtually equal to that
of a crystal oscillator.
REF OSC
El
N (fr +Afr)
fo
=----- + (41 +Of 9.)
Nr
- DIVIDER
1/Nr
P. D.
I
LOCAL
Fig. 2 Frequency Relationship of PLL SYSTEM
DISPLAY UNlT (X54-1210-10)
r------------
1
UNlT (X50-1370-10)
-
I
I
----
2.56 MHz
PD UNlT (X50-1380-10)
Fig. 1
PLL Circuit Block Diagram
TX. RX
*MIXER

VCO UNlT (X50-1370-10)
The VCO is a Colpitts type oscillating circuit (07)
and its frequency varies with the control voltage applied to
varicap diode Dl. This circuit is strictly stabilized against
changes in temperature and power source voltage to im-
prove the C/IU of its output and prevent unlocking.. The
VCO's output is passed through buffer 06, amplified by
012 and applied to MIX through D6 and D7 for both
reception and transmission.
In the LOCAL OSC, two quartz crystals for 0 and 5
kHz are switched with aswitching diode. 08performs over-
tone oscillation and its output is tripled in 09 to 127.930
and 127.935 MHz which are applied to MIX stage. The
lMlX circuit mixes the output and the VCO's output ampli-
fied by 05, and its output is passed through a .rr-type LPF
to deliver IF output of 5.37
- 9.36 MHz.
The output is amplified by the wide-band amplifier
of 01 to 03 and applied to the programmable counter.
013, which turns on and off VCO amp 012, is a protective
circuit in order to prevent emission of spurious radiation
occurring when the PLL circuit fails to lock and the VCO
runs away. This circuit
is automatically reset when the
PLL begins to work properly because
it is not involved in
the phase lock loop. D8 provides a certain time delay
when 013 is turned off, so 013 does not operate during
the transient state before the VCO is locked, though the
indicator works. This contributes to reduce noise.
PD UNlT (X50-1380-10)
06 serves as the interface and buffer amp for IC8.
The waveform of its IF output is shaped in IC8 and its
output frequency is divided to 10 kHz by the program-
mable counter consisting of IC5 to 12 and the resulting
signal is applied to MC4044P of IC4. While IC1 generates
5.12 MHz signal which is divided .to 112 by the flip-flop
circuit involved in IC1. The resulting frequency is further
divided to 1/16 in IC2, IC3 and 10-kHz output signal is'
applied to MC4044P of IC4.
-
The MC4044P consists of two PDs (phase detectors),
charge pump and amplifier. Fig. 3 shows the block diagram.
Passing through the charge pump and active filter, the out-
put of No. 1 PD becomes the control voltage to be applied
to the varicap of the VCO. The active filter consists of
01 to 3 to keep the VCO away from phase comparator
vd
noise. No. 1 PD, a digital phase comparator, contains a
sequential logic circuit which operates at the edge of decay
of signal coming to enter
R and V terminal. Itsstate be-
comes as shown in Fig. 2 after a certain time. When
R is
not equal to V (unlockedstate), Dlor D2is turned on and
05 turns on 04 to switch off 013, VCO amp driver, so
that spurious emission which might occur if the PLL fails
to lock is prevented.
w
I C4 VCO
0 To vari cap.
REF OSC U 1 PU UF
- m - r\
" - V -"
PD Charge
w
fi
-
No. 1 A pump
P-- Dl w - w w
PD DF
No.2
; - To 013 (OFF circuit
of
VCO output)
04
5 v
UNLOCK
Fig. 3
PHASE DETECTOR Block Diagram
Indicator

PROGRAMMABLE COUNTER AND TX-OFFSET
ing counter which counts in the order of 0, 4, 3, 2, 1, 0
CIRCUITS
(5),4, 3, ..... receiving input pulses, assuming that preset
These circuits, consisting of IC5 to IC12, are basically
a MODULO-N PROGRAMMABLE counter of IC5 to IC7
added with an EXTENDER consisting of a D-flip-flop of
lClO and a logic circuit of IC8, 9,
II and 12. It belongs
to the high-speedscaling method. Fig. 4 shows the opera-
tion of the circuits. The operation is simply described
below. A division ratio is preset in the MC74416 of IC5
to IC7 with a BCD code. The division ratio preset lies be-
tween 400 and 799 in relation to digital indication (144.00
- 147.99). While, since the IF signal entering the MC
74416 is 5.37
- 9.36 MHz to eliminate beat interference
in reception, the division ratio must be 537 - 936 actually.
For this purpose the gate, No, serves to raise the division
ratio by 137. The gate circuit,
U and D, shifts frequency
by f600
kHz for repeater operation which is equivalent
to the div~sionratio of 137
f 60. MC74416 is a decrement-
value is 5 and
PE is "0" (L level).
But output becomes "1" (H level) only when the
count is 0. It means that five input pulses make one out-
put pulse and the frequency is divided to 115. With three
ICs connected in cascade, the division ratio can be raised up
to 999. IClO is a high speed D-flip-flopwhich improves
the operating frequency of MC74416,
8 MHz (min.),by
a factor of two or more with the aid of gates A and
B.
Fig. 4 shows the case where the least significant digit
of the actual division ratio, Ns, is 7. Although resetting
should be done at the rise of input pulse and presetting
should be done at the decay of the input pulse when the
count has become three, the level at A
is set to L at the
count of five and it becomes the output of IC10-1 at the
next pulse. This output (01) resets the MC74416 and
presets it to N at the same time, but counting is not per-
formed since PE remains at the L level during the next
Fig. 4 Block Diagram of PROGRAMMABLE COUNTER
and TX-OFFSET Circuit

CIRCUIT DESCRIPTIONS
input pulse and it is reset. The operating frequency has
been improved because resetting and presetting are done
in one cycle of input pulse but not in half a cycle, and the
delay time, t2, of the high speed D-flip-flop in lClO is
much smaller than the delay time, tl, from IC5, 6 and
7 and logic circuit to point A.
Next, operation is explained in relation to the TX off-
set switch setting.
1 +600
During reception, this is the same as in (2). During
transmission, SR 1 is turned on and becomes U in Table 2.
Gate U therefore opens and gates No and D are closed.
At this setting, Ns
= IN + 197 (137 + 60),and it operates
as an extender when IC5, IC6 and IC7 take code
8, 0 and
5 respectively, to perform division of N
+ 197.
2 No (SIMP)
(F)and (G) make up No in Table 2. Gates Noand U
open and gate D
IS closed. At this setting, the relation,
Ns
= N + 137, holds between preset value N and actual divi-
sion ratio Ns. It is enoughto decrement the counter after
division of N (decrernenting) has completed and perform
resetting and presetting just when the count has become
137. For this purpose, IC5, IC6 and IC7 do not take code
8, 6 and 3 respectively (as already described), but it
operates as an extender at code 5 and performs division
of N
+ 137. Since the gate is of code 197 (137 + 60),the
extender operates before this code triggers the circuitry.
3 -600
During reception, SR2 is turned on as in (2). During
transmission, gates No, U and D open as D in Table
2.
At this setting, Ns = N + 77 (137 - 60), it operates as an
extender to perform division of N
+ 77 when IC5, IC6 and
IC7 carry code 9,
2 and 5 respectively. At this time, the
extender operates at code 77 even when all gates are open
Table 1 shows the case of
N = 400 (144.00 MHz).
- TSBl Active filter
n
TONE SQUELCH CIRCUIT *d
Fig. 5 shows the circuit. The tone squelch circuit
employed in this equipment is the so-called CTCSS (con-
tinc~oc~stone controlled squelch system). Tone signal of a
certain frequency
is superimposed with audio signal at the
trans~rlissionside, which is separated at the reception side
to drive the squelch circuit. When set toSOU (tonesquelch)
as shown in Fig. 5, a voltage is applied toTSBI and TSB2.
When no signal is received or signal received does not have
tone component, 020 and 21 remain off and no sound is
reproduced since the voltage of TSB2 is applied to the
base of Q13 through Dl4and the AF circuit is turned off.
When signal including tone component is received, the tone
signal separated from discriminator output with 019,
LPF
and amplifier, is applied toan active filter. The active filter
which serves to the tone frequency and 011 give steep
characteristics at the frequency. It selects tone output
equal to the active filter and its output passes through Dl1
(on during reception) and is detected in Dl2 and 13. It
turns on 020and then 021 and turns off Q13 and the AF
circuit (014) operates to reproduce sound from speaker.
In the AF circuit, an active type high-pass filter of 024
and 25 cuts off tone signal output to arnplify audio signal
alone. During transmission, 022 is turned on, and the
active filter and 011 forin an oscillating circuit to deliver
output with the same frequency as of the active filter.
This oc~tpc~tis passed through VR3 and modulated in
TX
unit together with audiosignal. The maximum frequency
deviation for audio signal is f5 kHz and that for tone com-
ponent for tone squelch is k0.5 kHz, which results in a
ratio of about -20 dB. This would result in buzzing sound
when unmodulated signal is received, but a high-pass filter
of 300 Hz in cutoff frequency corporated in the equipment
reduces the tone level to prevent buzz. Operation is the
same even in the SUB (sub-audible)since avoltage is applied
to TSBI, and sub-audible control is performed.
I I
2 13
H8D5022
I I
Dlsc L ---A
Output
e L.P.F.
AMP
To base of 013
Fig. 5 TONE SQUELCH Circuit

DESCRIPTION
Table 4 Squelch Active Filter List
Table 5 Tone Burst Oscillator
Module List
Frequency (Hz)
88.5
94.8
100.0
103.5
107.2
110.9
114.8
118.8
128.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7
Parts number
L79-0408-05
L79-0409-05
L79-0410-05
L79-0411-05
L79-0412-05
L79-0413-05
L79-0414-05
L79-0415-05
L79-0416-05
L79-0417-05
L79-0418-05
L79-0419-05
L79-0420-05
L79-0421-05
L79-0422-05
L79-0423-05
VCT CIRCUIT
Frequency (Hz)
1800
1950
2000
2100
2150
2200
2250
2400
2550
The equipment incorporates a VCT circuit at the out-
put side of the transmission mixer to improve spurious
radiation and output levels in the wide range from 144 to
148 MHz. Varicaps D2, 3 and 4 are connected to tuning
coils L11, 12 and 13 through temperature compensation
capacitors. Voltages divided from common 9V (C9) with
R62 and 61 (145.5 MHz), VR61 (144.5 MHz) VR62 (146.5
MHz) and VR63 (147.5 MHz) and switched with the MHz
switch are applied to D2, 3 and 4.
Parts number
TBM-1800
TBM-1950
TBM-2000
TBM-2100
TBM-2150
TBM-2200
TBM-2250
TBM-2400
TBM-2550
FINAL CIRCUIT
The output of the TX unit iabout 1.4 W, 50-ohm)
load) is amplified to about 10 W (50-ohm load) by 01 of
the PA unit and to about 35 W (50-ohm load) by 02 and
delivered to the ANT terminal by way of anANT switching
diode and a LPF. To protect the final transistor (02), the
input power to 02 is limited by controlling the collector
voltage of the driver (015 of TX unit and
01 of PA unit)
by detecting SWR of antenna with 03, 10 and 11. When
power is low, the circuit is usedto reducethe voltage across
the SB terminal with VR5.
Large aluminum die-cast heat sinks In combination
w~th Motorola transistors, MRF208 and 2N6083, ensure
high reliability.

Knob (SQU)
(K21-0703-04)
Knob (VOL)
(K21-0704-04)
Knob (MHz)
(K21-0702-04)'
4P microphone
(E06-0403-05)
Case (8)
(A01-0704.12)
2P connector
(E07-0251-05)
Case (A)
(A01-0703-22)
PARTS ALIGNMENT
LED LED
(838-0302-05) (838-0301-05)
Knob (MAIN)
(K21~0705-04)
'1
sub panel Knob (5 kHz) Knob (TX OFFSET)
(A22-0701~03) (K29-0702-04) (K23-0702-04)
Mounting bracket Mounting rail Earphone jack
stopper (J90-0045-04) (E11-0003-1 5)
(J51-0006-15)
I I I
4P socket
(E08~0471-05)
Heat sink
(F 20-0502-05)
I

PARTS ALIGNMENT
DISPLAY UNlT PD UNlT
(X54-1210-10) (X50-1380-10)
I
TX UNlT
(X56-1230-10) RF meter ADJ.
I I
I
~V'AVR
Tone burst time ADJ.
I I
Tone oscillator module PA UNlT
(option) (X45-1090-10)
VCO UNIT RX UNIT
(X50-1370-10) (X55-1 150-10) Center meter point
I I s meter ADJ. I
I
TON< UNIT I ~rotecti6n ADJ
I loption)
SWITCH BOARD Tone dev. ADJ. Herical resonator

V PA UNIT (X45-1090-10)
GC
PC BOARD

PC BOARD
Q1, 2:2SC458 (B), ~312~~1345 (E), Q4:2SC733 (Y), Q5:2SA495 (Y),Q6:2SC460 (B),IC1, 8, 9:TD3400AP,
IC2, 3:TD3493BP, IC4:MC4044P, IC5-7:MC74416P, IClO:TD3474AP, IC11:TD3410AP, IC12:TD3420AP,
Dl-3:1S1555
TD3400AP TD3474AP
2SC460
(B) 2SC733 (Y) TD3410AP TD3493EP
2SC458
(B) 2SA495 (Y1 TD3420AP MC4044P MC74416P
i""l f""i
B
B
1234567 1234 5678
r PCBOARD FOR SWITCH (525-2506-131
PC BOARD FOR CHOKE (525-2507-041
C 9

PC BOARD
V VCO UNIT (X50-1370-10)
2SC733 (Y)
2SC785 1Yi

C)j PC BOARD
INDICATOR UNIT (X54-1210-10)
LOCK INDICATOR
IClW3:SN7447AN,DlW6:TLR-313(C, D)

r RX UNIT (
PC BOARD
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2 4 3
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Ln-0
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PC BOARD
TX UNIT (X56-1230-10)
1 r-
O cj
>- 0
-
g d
8:
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LC)
2) -

PARTS LIST
* : New Darts
TOTAL
I Ref. No. Parts No. I Description
I Ref. No. 1 Parts No. 1 Description Re-
mark
I CAPACITOR I
~18-0802.05 Relay socket
E22-0207-05 Lug
E23-0047.04 Terminal x 1
I
E30-0355.05 Wire (for speaker)
E31-0403-05 Connector with lead
E31-0404.15 Connector with lead
E31-0405-05 Connector with lead
E31-0406-05 Connector with lead
E31-0407-05 Connector with lead
E31-0408-05 Connector with lead
E31-0409-05 Connector with lead
E40-0513-05 Mini connector wafer
E40-0616-05 Mini connector housing x 2 Tone filter
E40-0713-05 Mini connector wafer
E40-0913-05 Mini connector wafer
E40-1013.05 Mini connector wafer
CE04WlA470 Electrolytic 47~F 10WV
CK45FlH103Z Ceramic 0.01~F +80%,-20%
CK45D1 H102M Ceramic lOOOpF f20%
CK45F1 H103Z Ceramic 0.01~F +SO%,-20%
CC45SLlHIOI K Ceramic IOOpF
? 10%
RESISTOR
SEMICONDUCTOR
Transistor 2SD235 (Y. 0)
F05-1031-05 Fuse (lOA) x 2
F19-0601.14 Blinding plate A (Ins~de)
F19-0602-04 Blinding plate
B (Outs~de)
F20-0078-05 l nsulating plate
F29-0014-05 l nsulating washer
Diode V068
Diode IS1555
LED with holder
LED with holder
Diode IS1555 cushion
Cushion
Vibration protector (rubber)
I POTENTIOMETER I
Case (inside)
Buffer fixture
Styrene foam cushion (Upper)
Styrene foam cushion (Lower)
Protection coyer
Polyethylene bag (60 x 110 mm)
Polyethylene bag (200 x 200 mm)
Polyethylene bag (125 x 250 mm)
VR61-63 RIP-3025-05 Semi-fixed resistor 10kR
VR101.102 R19-9401-05 Variable resistor
I I
571, 72
5102
S103
RLlOl
SWlTCHlRELAY
Rotary switch (MHz)
Lever switch (TX OFFSET)
Push switch (5 kHz)
Rotary switch (TONE)
Push switch (HI-LOW)
Push switch (POWER)
J01-0021-04 Leg
J02-0069-05 Leg (rubber) x 2
JI 3-0029-05 Fuse holder
J21-0941-02 Mounting bracket
~25.2506.13 PC board (for switch)
J25-2507-04 PC board (for choke)
J25-2508-04 PC board (for TS)
J32-0029-04 Hexagonal boss x 3 (PC board for choke)
J32-0217-04 Hexagonal boss
x 4 (PLL)
~32-0704.04 Hexagonal boss x 5 (for S74)
~41-0020.04 Knob bushing x 2
~51.0006.15 Mounting bracket stopper x 2
~90-0045.04 Mounting rail x 2
1 Relay
COIL
L15-0016-05 Choke coil (Low frequency)
L40-1021-03 Ferri inductor 1mH
I I
( MISCELLANEOUS I
Case (A)
Case (8)
Chassis
Panel
Sub panel
Knob (MHz)
Knob (SQ)
Knob (AF, TONE)
x 2
Knob (MAIN) x 2
Knob (TX OFFSET)
Knob (HI-LOW, POWER) x 2
Knob (5 kHz)
Escutcheon(A) (Right toward you)
Escutcheon(8) (Left toward you)
Speaker grille cloth
Front glass
, S meter Speaker
Microphone
Model name plate
Name plate (terminal)
Label
Warranty card
Operating manual
PA unit
VCO unit
PD unit
Indicator unit
RX unlt
E06-0403-05 4P microphone jack
~07-0251.05 2P connector (plug)
Em-0471 -05 4P socket
E09-0471-05 4P plug
TX unit