
Crystal Filter Bypass Network Configuration
Cm&al
Filter
The Crystal Filter Bypass Network Configuration shown in
Bypass
Network
Configuration
Figure 3-109 can be constructed using the parts listed in Table 3-18
and
Table
3-19.
Table
3-18 list the parts required for the construction
of 21.4 MHz IF crystal-filter bypass networks used with the
A4A4
and
A4A8
assemblies. Two 21.4 MHz bypass networks are required.
‘Iable
3-19 list the parts required for the construction of 3 MHz IF
crystal-filter bypass networks used with the
A4A7
assembly. Four 3
MHz bypass networks are required.
21.4 MHz
BYPASS
CAPAC
I
TOR
CA,PP;
‘&OR
RE;;;y;
RECEPTACLES
Figure 3-109. Crystal Filter Bypass Network Configurations
‘Ihble
3-18.
Crystal Filter Bypass Network Configuration for
A4A4
and
A4A8
(21.4 MHz)
I
Part
1
Value
Qty.
1
HP
Fort
Number
Resistor 31.69
2
0698-7200
Capacitor
100
pF
2
0160-4801
Capacitor 910 pF
2
0160-6146
Receptacle
4 1251-3720
‘0ble
3-19.
Crystal Filter Bypass Network Configuration for
A4A7
(3MEz)
I
Part
1
Value
1
Qty.
1
HP Fart Number
I
Resistor 2.79
4
0683-0275
Capacitor
0.047
PF 4 0170-0040
Receptacle
8
1251-3720
Adjustments 3-219
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