Service manual
III
CON
T
EN
T
S
I
N
T
R
O
DUC
T
I
O
N .............................................................
1
S
I
M
PLE As A B C D E
F
.................................................
2
•
Mail Boxes - Messages in Code - Select a Channel - Bits in Line
•
Horrible Hex - Conversion Tables
PRAC
T
I
CAL C
O
NS
I
DERA
T
I
O
NS ...................................
8
• Which
Eprom? - Outputs - Transistor Inverter - Range of Codes
•
Input Voltage - Switch Codes - Output Voltage
PRAC
T
I
CAL EXA
M
PLES ................................................
16
•
The Cobra 148 on 10 Meters -
Eprom Method -
Eprom Codes
•
Transistor Inverter Application - Channel Switch Codes
•
Second Example - Third Example - Fourth Example - Fifth Example
A
G
ENERAL PURP
O
SE EPR
O
M
B
O
ARD.......................
42
APPEND
I
X
1
.....................................................................
44
•
Erasing - Cleaning Time - Non-E-proms - Programming
•
Unreadable Devices - Gang
Bangers - Manual Programming -
Eproms
•
All Charged Up - Decimal To Binary
APPEND
I
X
2
.....................................................................
51
•
Pin Out Diagrams
APPEND
I
X
3
•
Increasing frequency without
Eproms by pulse subtraction
....................
53
G
loss
a
ry of
T
e
rms ............................................................
59