Spectra Engineering MX800 - Circuit Diagram: MX800 PA CIRCUIT DIAGRAM; PA 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
C13
100n
ETH
ETH
ETH
D7 BB131 D6 BB131
C28
ETH
D2 BB131
ETH
C19
C17
R5 220R
ETH
C12
ETH
R9 1K5 R8 3K3
TR1 2SC3583
SKT-1
C22
100n
D3 BB131
ETH
C18
10n
R10
2K2
ETH
R6 100R
ETH
ETH
C20
1n
3
2 1
4
IC1 MAR-6SM
3
2 1
4
IC2 MAR-6SM
ETH ETH
C6 1n C7 1n
C1 1n C2 1n
SKU-1 SKT-6
SKT-5
ETH
C14
1n
ETH
SKU-3 SKU-2
ETH
C11
ETH
R4 100R R3 560R
ETH
ETH ETHL1
390nH
L2 390nH
R2 270R
R1 270R
C3 1n
ETH
C15
1n
ETH
L4 L5
L7 390nH
L6 390nH
CR1
ETH
L8 220nH
BB131 UNLESS NOTED
4p7
4p7
4p7
4p7
5p6
D6,D7=BB149 FR4 PCB, D2,D3=NF
R3 776-794MHz 686-704MHz 0.79GHz, ER37 1p8 1p0 3p9 - 120nH
D6,D7=BB149
715-735MHz 0.85GHz, ER37R 805-825MHz
5p6
C19
3P91p1p8
C19=8p2
FR4 PCB
56nH-4p71p51p80.8GHz, C3686-704MHz776-794MHzR3
GJB: FILT CHANGE1-8-99
3p91p53p30.85GHz, C5715-735MHz805-825MHzR
FR4
NOTES
R TO X (805-960 MHz)
MX800 RX VCO
CCT DIAGRAM, BAND
X W V U S R 805-825MHz
824-849MHz
872-905MHz
890-915MHz
917-950MHz
925-960MHz
BAND FREQ RANGE
VCO COMPONENT VALUES
+7.4V
+7.4
CERAMIC
RESONATOR
COAXIAL
VCO CONTROL
RF OUT
TO PRE-SCALER
DATE REVISION TITLE
DRAWING No SHEET
OF
REV
REF
PCB
BY DATE
DESIGNED
DRAWN
CHECKED
APPROVED
APP
1 1
GJ GJ
(C) Copyright
SPECTRA
ENGINEERING
G
CS012-1G
11/6/96
16/3/97
+7.4V SWITCHED
CR1 C11 C12 C17 C28
1.1GHz, C3 1p2 1p5 2p7
ETH
LO INJECT
895-915MHz
715-735MHz805-825MHzR 0.9GHz*, C3 1p5 1p8 3p9
3p3
- -
850-870MHzT
L4/5
120nH
33nH
33nH
TV2 REVF
800-825MHz 1.0GHz, C3 2p7 2p7 2p2 - 120nH
CERAMIC PCB CERAMIC PCB FR4 PCB
C: NEW BAND12-9-01 GJ
10-10-02 D: LX & R10 GJ
2p2 1p0 3p9 5p6 1p0 120nH
D2,D3 NF
D6,D7=BB149 R5=180R
760-780MHz 0.910GHz, ER37 1p8 1p0 3p9 5p6 1p0 120nH
D2,D3 NF L7=180nH
827-860MHz 1.060GHz ER37 120nH
D6,D7=BB149 R5=180R
D2,D3 NF L7=180nH
1p