
6-6
VHF Enhanced
Extra
Wideband Receiver Instruction Manual IM10-VR3H040-A
B
6.6
Enhanced Front End Block Diagram
BANDPASS
FILTER
IMAGE REJECTION
FILTER
RF
AMP
DOUBLE
BALANCED MIXER
LOCAL OSCILLATOR
FILTER
ATTENUATOR
IF OUT
21.4 MHz
12.5 dB GAIN
LO IN
+5 dBm
RF IN
FE3H040M1
IL = 1.5 dB
Fc = 80 MHz
IL = 7.5 dB
IL = 2 dB
3 dB BW > 5 MHz
16 dB
IL = 1.5 dB
Fc = 61 MHz
CONVERSION
LOSS = 0 dB
6.7
Bandpass filter Component Layout
C2
C1
C4
C3
C6
C5
C8
C7
C9
Bottom
of J1
L2
L3
L4
L5
L1
COAX
FE3H040M2
6.8
BandPass filter Schematic Diagram
VICTORIA B.C.
DE
DANIELS
ELECTRONICS
TITLE: ENHANCED FRONT END BANDPASS FILTER FE3H0X5
TOP
TOP
DWG No: FE3H040M3
FE3H045
FE3H035
37.5-50.0 MHz
29.0-38.5 MHz
68 pF
L5
C9
UNUSED REFERENCE DESIGNATORS
-----
-----
-----
-----
-----
-----
-----
-----
-----
-----
-----
-----
-----
-----
-----
-----
RF INPUT
APRVD: RICK SMEGAL
BOARD REV: 1.0
DATE: 06 FEBRUARY 1997
BOARD No: 50034-01
L5
L4
L3
L2
L1
C9
C8
C7
C6
C5
C4
C3
C2
C1
162-252 nH
162-252 nH
162-252 nH
162-252 nH
162-252 nH
193-306 nH
193-306 nH
193-306 nH
193-306 nH
193-306 nH
68 pF
10 pF
56 pF
8.2 pF
8.2 pF
56 pF
10 pF
68 pF
82 pF
15 pF
68 pF
12 pF
82 pF
12 pF
68 pF
15 pF
82 pF
Designator
DWN BY: ROBERT FICHTNER
HIGHEST REFERENCE DESIGNATORS
DWG REV DATE:
C1
C3
C5
56pF
C7
C9
J2
L2
L3
L4
L5
C2
C8
C4
C6
J1
L1
SECTION 1
SECTION 2
SECTION 3
SECTION 4
SECTION 5
O/P
ELECTRONICS LTD.
DANIELS