5 4 3 2 1

L7 L21 40
LOCK DETECTOR BRS VCB2
R23
BAS +9.4 D1 R30 1M D2
R21 C6 R22 C66
+5V 82R 47u 82R 470R MA150 MA150
473
R4 L1 L9/L11 ARE 27R 25 TURNS OF 30 SWG
2K2 68uH C7 D3
Q1
2SC900
BT L6
473 5 Volt L5 RV2
2u2 C51 2u2H C53 L11
L4 L3 C43 C94 100R R43 *
C4 1u 103 103
TP4 C5 103 100R To RF AMP (Q20)
C8 472
C27 223 R32 (C105)
102 100R R39
IC1 1u C39 R41
10R 270R
PLL02A 82p

TO CHANNEL SELECTOR SWITCH

C30 C45
5p C41 IC3 5p R34 T6 L10
16 1 C9 103 TA7310
Vss Vdd 8K2

7
15 2 TP8 R38 10CP 006S C210
P0 F in 68p T3 T5 47p
14 3 Vdd C36 Vdd C46 270R L9
P1 RI N/C VCO BLOCK 10MB 005S2 10p 10CB 003T 47p C54
13 4
P2 FS C28 Q7 C52 * 82P C56 *
12 5 1 9 1 9
P3 PD 102 2SC710 390p L12 150p L14 L301
11 6 Q8 Ant
P4 LD C55
10 7 2SC460
D P5 P8 R1 AMP MIX AMP AMP MIX AMP Q9 220p D
9 8 C49 * L13
P6 P7 3K3 C2 R2 Vss Vss 2SC2166 Q10
47p C301
.22u 680R IC2 R35 2SC1969 C59

5
TA7310 10K R36 R42 270p 150p
T2 C40 * T4 220R
C1 R40 560R L8 R44 R45
1 C222 C29 10MB 003M2 56p 10CA 006T C50
1u 122 C35 R33 R37 33R 1/2W 10R C57 * 4K7 C58
1u C3 33p C37 * 3K3 C42 C48 103 470p C303
10u C33 C26 TP3 103 C47 * 473 68R 560p C302 C304
102 33p 150p 39p 473 473 473
FM AUDIO INPUT

RV1 C25 CHASSIS

C44
1K 12p Mini Coax GND 1u
R28 R29
56K C32 100K R9 TO [PTOS011AOX] LOOP OSCILLATOR BOARD R72
102 R8 100K C38 C63
TP7 103 150R RV3
Q2 3K3 D8 R31 D10 5p C60 D9
D11 20K
2SC710 F 1K5 MA150 2p 1N60
FROM Q42 8.6 VOLTS MA150 5 VOLT ZENER C65 RF Meter
R5 Q3
RX SWITCHING 470K C10 2SC710 R47 1u
Q4 102 C14 33K C64 R46
2SC828 27p FROM CHANNEL SELECTOR SWITCH 103 680R
C11 RV4
R25 5K C61 C62
D4 150p 1u
5K6 C221 R30 C15 ALC 103
ITT410
1u 10K X1 560p BTA
R6
470K C12 R7
470R 10.240 Mhz
473 CT1 C16
C13
68p 20p 5p GND

BTS
BRA BTA BS D45
R70 MA150
470R C94
10n
BAS T7 BRS
10MA 015S
C902 C93 R76 R80
473 103 100R 3K3
IC4 L18 R74
1uH C95 1K5
R53 AN612 R60 L19 103 R78 D18
1K 1 7 560R 68uH R170 100R MA150
CARRIER OSCILLATOR TEST POINT R61 18K T8
Q13 12K C102
TP5 10MA 015S

6
D12 2SC710 Q16 Q17 103
D13 R68
R52 MA150 C86 MA150 2SC710 2SC710
C
220R R71 C
330R 103 3K3
Q15 D17 R73 Q19
CT5 10.692 LSB C87 XF C90 Q14
R49 L17 R56 R57 R64 * 2SC710 MA150 15K C97 2SC945
C68 * 18K Q11 2u2H 103 SCM - 107A 103 2SC710 103 R81
330R 3K3 150R
39p CT5 L16 2SC710 R55 12K
20p 4.7uH 100K C96
C74 * R58 Q18 L20
X3 120R R65 33p
R48 8p 2SC710
Q12 C89 820R
5K6 C70 C98
2SC710 C88 18p R75 6p
102
BL 10.692
C73
R54
RV6
R63
5K6 18pF R69 150R C104 R77
BL SWITCHED ON IN LSB 220pF C80 1K R67 4K7 103 15K
.22u 47K R59 C91 560R C99 C101
C69 * D15 .22u
C67 10p CT4 R51 C72 C78 C79 1K D14 MA150 R66 33p 102 R79 C100
RV5 R62
103 20p R50 C71 560R 220p 100p 103 10K C83 C84 MA150 3K3 4K7 C92 C76 C77 * 1K 33u
C82 C81 FROM MODE SWITCH SW1A
10K 22p 103 .22u 103 10u C85 103 22p 220p
103 8.6 VOLTS IN FM RX
31
CT4 10.695 USB RV5, RV6 CARRIER BALANCE

GND

SSB MIC AUDIO INPUT

1st MIXER INPUT

S4
15
BRA NOISE BLANKER
BAS 10.240Mhz To Mixer Input OFF=GND

C147
BR R111 D27
ON=OPEN
C148
FROM VCB1 10u
10n
33K
MA150
D48
MA150
13.8V R148
47R
R85 R100
220R R92 330R R103 C137
R89 1K 56K C138 333
220R R106 R108 3u3
R86 5K6 2K2 R119 R112 R113 23
3K3 47R 22K 270K
R110
R84 10K S3
47K C215 TONE
T15 D25 C134
D29 R114 103 LOW=GND
R98 C125 10LA 022S 1N60 472
C118 D21 R97 102 1S32 Q29 47K 21 HI=OPEN
C117 C120 C123 100K C130
C105 T9 T11 T12 220p 1N60 5K6 472 T13 D23 T14 CF 103 2SC710
B D19 D20 5p 102 Q28 B
33p ETR 0333 Q20 10CB 001M 10MA 013S C124 10MA 014S 1N60 10LA 021S CFW455HT R105
MA150 MA150 C109 Q21 Q22 R91 2SC710
2SC710 .47u 470R D26
RF INPUT 3p 2SC710 2SC710 100K R117
FROM Q10 Q25 MA150 47K
R109
D22 R94 2SA733
C114 39K
1N60 470K Q24 C128
39p Q23 2SK34 R99 Q26 27p Q27
1M 2SC763 C132 R116
2SC763 2SC710 33K
C126 223
T10 R96 D24 R115 C136
RXX IS MOUNTED RXX R88 C119 C122 103
10CA 006 5K6 C??? R101 1N60 R107 68K 220pF
ON SOLDER SIDE 68K R83 470R C115 472 R93 R95 332 R104 C131 C135
56p 10K 560R C129 38
OF PCB. R82 C106 4K7 C107 C108 C110 C111 C112 103 C116 10K 1M5 R102 5K6 222 R122 C133 4u7
103 103 C113 103 C121 C127 5K6 223 150R 472
1K 103 473 103 103
1u 102 10u
14 R169
R87 C??? Is Mounted On Solder Side Of PCB D28 4R7
C149 (2W)
RV12 MA150
4K7 103
500R 37
SSB L22
Mic Gain 1uH
9 R164 R90
VR6
56K 3K3
50K

20 R144 FROM ON/OFF SWITCH R166 T17

VR1 / S1 R133 1K C176 10K
50K 25 C163 27 4u7 07LA 023N
12K C167 C169

5
R140 33u GND
D16 R134 100K R143
3K3
68p 68p BAS
1S32 VOLUME R135 27K GND 8 C142
12K C161 T16 103
C182 C183 C181
C153 2.3 V C103 102 1000u 07LA 005N
C171
5pF SSB AGC
1.8 V Q30
BR GND 332 GND C168
150p
683
473 10u
Q36 R158 * 2
IC6
14
R128
2SK34 10K C162 R146 4 2SD837 AN240 9
Q31 R145
D34 223 560R 820R 5 C172
1 2 C173 R121
MA150 R126 7.6 V 2SA733 C160 6 47u R156 10
IC5 10 330u 47K
M2 10K 223 1K
C155 D35 R131 C166 TA7205P
10u 1S32 22K Q34 8 R157 C187
D33 222 7 103 1
R125 2SC945 9 4K7 C140 C141
1N60 C154 12
RV7 RV8 100K R129 R132 3 C170 C175 102 1n
D30 10K 3u3 2K2 10K R147 RV13
10K C152 220p 3u3 C143
C165 5K

3
4
6

7
1N60 AM/FM S-Meter SSB S-Meter 100p R130 47R 473
Q33 33u AM Carrier Power C139 R120
1K C174 GND 473
2SC945 1u 22K
Q32 R138
R123 D31 2K7 R137 R150
1N60 RV11 RV10 2SC945 C164
1K 3K3 1K5
200K 20K 4u7 R151
R124 Q35 Q37
C156 560R SSB SQ AM SQ 2SA564 R141 * 6K8 C145
A C151 RV9 R127 D36 C158 2SC828 R155 103 A
103 Range C159 1K2
M C149 103 5K 470R Range MA150 473 R152 10K
1u D32 102 C178 R153 GND
AGC C157 C180 47u
D38 D39 1K5
1N60 C179 33K MA150 C179 GND
D37 47u R175 103 MA150
22u 3u3 30
MA150 R139 5K6
C212 AM
15K SW1E
223 USB MODE SWITCH
S/RF SIGNAL METER R154 RV14 LSB
270R 1K
For better TX audio change R150 to 4K7
AMC D47 FM
R175 IS MOUNTED ON MA150
24 GND R136
5K6
SOLDER SIDE OF PCB BAS D46 VCB1
BRS BS MA150
39 28 29
BAS FM 1
VR2 FROM PIN 1 ON MIC SOCKET FROM MODE SWITCH SW1B DRAWN BY Rick Jackson Euro Radio Co
POT MICROPHONE AUDIO INPUT 7.9 VOLTS IN FM TX SW1F
SQUELCH Title
MODE SWITCH
AM CYBERNET PTBM121D4X AM/FM/SSB PART 1
TO RV1 FM DEVIATION
Size Document Number Rev
D PTMB121D4X_MAIN.SCH 1.3

Date: Wednesday, October 22, 2008 Sheet 1 of 2

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