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Heathkit SB-104 - Page 58

Heathkit SB-104
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RECEIVER
BLOCK
DIA
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.............................................
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ti
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RECEIVER FRONT
END
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f
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BOARD G
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+
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_----------------------------.
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CRYSTAL FILTER
I1
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BOARD E
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I I
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Qml 0704 1
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QMl
-
I1
r
QM3
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BAND
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SWITCHING
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1ST 8.65 MHz ZND
!!
- -
-
XTAL
SWITCHING
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-
PASS
-
&
-
&
-
!
.
I,
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FILTER MIXER FILTER
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MATCHING
FILTER
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MATCHING
1-1
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USB
GEN
Q613
LSB
GEN
Qffl8
I----------------------------/
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1
A
A
A
1
v
3.395 MHz
ANTENNA INPUT HFO INJECTION VFO INJECTION
A
TEST SIGNAL. 3.395
MHz
5
-
5.5
UHF
DERIMDAS INPUTTO
6-34
7
-
6.845
MH*
EXPLAINED IN IFAMPLIFIE
THE TEXT
1%;
10.
3.395 MHz IPAGE
2661.
INPUT TO
18.
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B,
CRYSTAL FILTER
PIN1
BOARDE
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CW
GEN
Q6ll
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I!
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