Spectra Engineering MX800 - Circuit Diagram: MX800 RX VCO CIRCUIT DIAGRAM; RX VCO Circuit Diagram Details (continued)

1 2 3 4 5 6 7 8
A B C D
8
7654321
D
C B A
9 TRADE ROAD
MALAGA 6062
WESTERN AUSTRALIA
PHONE (618) 92482755
FAX (618) 92482756
C5 100n
R25
820R
R27
330R
R26
820R
C99
0p47
C32
1p8
C33
0p47
D1 BAV99
RV1
2K
C70
1n
C71
1n
R1 1K
R24
1K
R23
1K
D2 3V9
R28
1K
C73
100n
C72
1n
C31
1n
C30
100n
R7 270R
C39
100n
C38
1n
L6 RFC
L7 RFC
R21
4K7
R20
10K
TR3 BC857
C2 12p
C3 15p
C12
15p
TR5 2SK3075
C61
1n
CN2-1
C55
1n
C54
100n
R8 68R
C46
2p2
R17
68R
C48
2p2
R4 470R
R3 12R
R14
100K
R11
100K
R10
1K
R15
1K
CN4-1
CN4-8
C56
1n
C57
1n
CN4-4
C44
1n
TS1
KTY10-5
C4 27p
C62
100n
C53
1n
CN2-2
R19
27R
R18
39R
CN1
C41
150p
D3 HSMS-2800
C45
1n
C47
1n
D4 HSMS-2800
R12
39R
R13
27R
CN4-5
C43
1n
C59
1n
CN4-2
CN4-6
CN1
CN4-9
R2 820R
C14
10p
R9 82R
R16
82R
C1 150p
C58
1n
C68
1n
C69
1n
R29
330R
R22
820R
GJ 7-09-01
5-09-01JJ
(1W)
SET BIAS TR2SET BIAS TR1
(+24dBm)
APPLICATION2. * DEPENDS ON
COMPONENTS FITTED1. NOT ALL
NOTE:
RF IN
PTT IN
+13.8V IN
FWD VOLTS
REFL VOLTS
RF OUTPUT
(C) Copyright
ENGINEERING SPECTRA
GJ
APP
APPROVED
CHECKED
DRAWN
DESIGNED
DATEBY
DWGS
REF
REVSHEETDRAWING No
TITLEREVISIONDATE
CS243-1C C
29-8-01
1 OF 1
1 WATT
WIDEBAND 400-520MHz
-2dB PAD
3.4V
5.68V
LPF: BCDFHJLMNOQV
R5 2R7 R6 2R7
L5 12nH
L8 12nH
C36
22p
C96
8p2
C199
2p2
C34
2p2
C89
N.F.
C35
1p2
C88
0p47
<--- 1.79VDC
Biasing 56mADC
C42
150p
C98
0p47
C81
R35
1K
C66
100n
C67
1n
C64
1n
C63
100n
R32
100R
C74
100n
ETH
ETH
C82
100p
ETH
C6 100p
ETH
IC2 LE50
VCC
8
TST
7
CLK
6
DATA
5
A0
1
A1
2
A2
3
VEE
4
IC1 24LC02
C75
2u2
CN4-7 CN4-10ETH
ETH
CLOCK
DATA
ETH ETH
ETH
ETH
ETH ETH ETH
ETH
ETH
ETH
ETH
ETH ETH ETH
ETH ETH ETH ETH
ETH ETH
ETH
ETH ETH
ETH ETH ETH ETH
ETH ETH ETH ETH
ETH ETH ETH
ETH ETH
ETH
ETHETH
ETH ETH ETH
ETH
ETH ETH
ETH
ETH ETH
ETH ETH ETH
2K
(IN HEATSINK)
TEMP SENSOR
POWER AMPLIFIER