A
B
C
D
1
2
3
4
1
2
3
4
A
B
C
D
C
D
Date
Sheet
FCSM No
DWG No
REV
Size
Drawn
Checked
Issued
Approvals
Drawing
Scale
A4
JJ de Oñate
B
XV VIII MMVIII
tiny SCR Preselector_Rev_B Diagram
1/1
©
HEROS technology Limited 2006. All rights reserved
Preselector
Output
PIC 18F2455
Control module
Full speed USB v2.0
Plug and Play
Windows 2K, XP, Vista, 7 OS
Control from PC
Service Coonnector
Power Drivers
Gas Discharge Tube
Antenna
Input
8 bits/256pf variable capacitor
1pf resolution
1.8MHz to 30MHz
Five Band Pass Filters Bank
Multi Band-Pass filter module
Ld
Lc
Lb
Le
La
L1
Band B
Band C
Band D
Band E
Band A
+12V DC/250mA max
Not used six ports
aux. connector
Control Bus
Z Match
Z Match
