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
R12
10R
R11
10R
L10
TR1 SST-310
C17
ETH
R6
ETH
R5
C5
ETH
L6 L7
L5
L4
C13
1u
ETH
C15
1n
ETH
C3 1n
R1 270R
R2 270R
L2 390nH
L1 390nH
ETH ETH
ETH
ETH
C4 1n
R3 560R R4 560R
ETH
C11
ETH
SKU-2 SKU-3
ETH
C14
1n
ETH
SKT-5
SKT-6 SKU-1
C2 1n C1 1n
C7 1n C6 1n
ETH ETH
3
2 1
4
IC2 MAR-6SM
3
2 1
4
IC1 MAR-6SM
ETH
R10
2K2
C18
10n
ETH
D3 BB133
C22
100n
SKT-1
C12
ETH
D2 BB133
ETH
D6 BB133 D7 BB133
ETH
ETH
ETH
L11
C19 CT1
2-20pF
C16
ETH
1.5T390nH220nH10R18p1nF5p618p4p76p8
SW BW=20MHz1.5T390nH390nH10R15p1nF4p76p83p92p7
SW BW=10MHz1.5T390nH390nH10R8p227p4p76p83p91p8
1.5T390nH390nH10R22p1nF4p715p3p35p6
2.5T390nH220nH10R6p81nF4p712p3p35p6
GJD: VALUE CHANGES1-8-99
400-435MHzN2 310-345MHz 4p7 3p3 12p 3p9 47p 8p2 10R 82nH 390nH 2.5T
2.5T390nH82nH10R8p247p3p912p3p34p7
2.5T390nH150nH10R6p81nF4p715p2p75p6
(SWITCHING BW = MAX)
1.5T390nH220nH10R6p81nF-15p2p74p7
10p 3p9 15p 4p7 1nF 6p8 220R 220nH 390nH 3.5T
3.5T390nH220nH68R6p833p4p715p4p710p
ETH
+7.4V SWITCHED
1/6/98
11/6/96
CS005-1F F
ENGINEERING SPECTRA
(C) Copyright
GJ GJ
11
APP
APPROVED
CHECKED
DRAWN
DESIGNED
DATEBY
PCB
REF
REV
OF
SHEETDRAWING No
TITLEREVISIONDATE
TO PRE-SCALER
RF OUT
VCO CONTROL
+7.4
+7.4V
CCT DIAGRAM, BAND
MX800 RX VCO
A TO Q (66-520 MHz)
395-430MHz
365-400MHz
LO INJECT
305-340MHz
335-370MHz
370-400MHz
345-375MHz
320-350MHz
295-325MHz
270-300MHz
245-275MHz
220-250MHz
195-225MHz
175-200MHz
155-180MHz
135-160MHz
70-88MHz
66-80MHz
M L K J I H G F E D C B A
455-490MHzP
Q N 395-430MHz
485-520MHz
BAND FREQ RANGE
VCO COMPONENT VALUES
425-460MHzO
C11 C17 C12 C5 C16 C19 L11L4,5R5 NOTES
L6,7
,10
111-125MHz
115-133MHz
225-250MHz
245-270MHz
265-290MHz
285-315MHz
230-260MHz
385-415MHz
310-340MHz
335-365MHz
360-390MHz
435-465MHz
280-310MHz
P2 450-485MHz 360-395MHz
4p7 3p3 10p 4p7 1nF 15p 10R 220nH 390nH 1.5T
1.5T390nH220nH10R15p1nF4p710p3p34p7
4p7 2p7 15p - 1nF 6p8 10R 220nH 390nH 1.5TQ2 500-532MHz 410-442MHz
D3 148-174MHz 238-264MHz
10p 4p7 15p 4p7 33p 6p8 68R 220nH 390nH 3.5T
10p 4p7 15p 4p7 33p 6p8 68R 220nH 390nH 3.5T
IV3 REVF
Q3 485-505MHz 395-415MHz 2p7 3p9 5p6 4p7 1nF 15p 10R 390nH 390nH 1.5T SW BW=20MHz
L2 345-375MHz 435-465MHz
5p6 4p7 6p8 6p8 1nF 1nF 10R 680nH 390nH 8.5T
4p7 4p7 8p2 4p7 1nF 5p6 10R 220nH 390nH 1.5T
8.5T390nH680nH10R1nF1nF6p86p84p75p6
1-11-99 E: IMPROVED SPEC RL
P3 475-495MHz 385-405MHz
R6
220R
220R
220R
220R
220R
150R
270R
150R
150R
150R
220R
220R
220R
220R
220R
220R
150R
220R
220R
220R