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President Randy CB-Radio


Modification



Frequency list 400 channels mode

1 2 3 4 5 6 7 8  
0 0 1 0 0 0 0 0 HAM-Radio - 28.000MHz to 29.700MHz
0 0 1 0 0 0 1 0 HAM-Radio - 25.000MHz to 29.700MHz
0 0 0 0 1 0 1 1 400 Ch. FM and AM
0 0 0 0 1 0 0 1 400 Ch. FM
0 0 0 0 1 0 0 0 200 Ch. FM and AM
0 0 0 0 0 1 1 1 200 Ch. FM
0 0 0 0 0 1 1 0 12 Ch. AM 1 Watt and 80 Ch. FM 4 Watt
0 0 0 0 0 0 1 0 40 Ch. AM and FM
0 0 0 0 0 0 0 0 40 Ch. FM (CEPT)



Adjustment

T101 RF Input
T102 RF Input
T103 RF Input
T104 MF (IF 10.695MHz)
T105 RF Output
T106 RF Output
T301 FM Discriminator (Demodulator)
T401 VCO-Coil
CT201 3.600MHz
CT301 10.240MHz
RV101 Squelch
RV102 AM Modulation
RV103 RF Power
RV301 S-Meter
RV401 FM-Deviation (FM-Modulation)

Connector

Pin Name Description
1 TD To CTCSS board
2 FB+ Positive supply voltage to VCO PCB
3 RX B+ Positive supply voltage to Receiver and IF amplifier
4 PD VCO voltage from PLL (CPU)
5 TX TX signal to Transmitter and VCO
6 FIN VCO frequency to PLL (CPU)
7 A/F AM/FM Modulation
8 SW B+ Positive supply voltage fron ON/OFF switch
9 H/L High/Low RF Power Control
10 B BAND B Band (Not in use)
11 BATT Positive supply voltage from battery
12 BATT Positive supply voltage from battery
13 AF Audio signal (To AF amplifier)
14 U.L. UnLoock from CPU
15 MIC Microphone signal
16 S RF S-Meter to CPU
17 SQ Squelch signal to CPU
18 A BAND A Band (Not in use)
19 GND Negative supply voltage
20 TC To CTCSS board

User Manual User Manual CB-Radio (Norwegian) User Manual HAM-Radio (Norwegian)


Komponent`s

Schematic diagram

KTC2078 Finale Transistor

KTC 1006 Driver Transistor

NJM386 Power Amplifier

TK10930V FM/AM IF and Detector

TDA2003 Audio Power Amplifier

KIA4558 Dual Operational Amplifire

LC72336 CPU