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CHASSIS PCMA001S
Superstar 2200
Alan 88S - Argus 5000 - Cobra 148GTL DX (fake)- Colt 2400 - Falcon 2000 - Ham International 8040 - HyGain 80 - Lafayette 240FM - Mongoose 2000 - Nato 2000 - Palomar 2400 - Palomar 5000 - TriStar 797 - TriStar 848
Block Schematic Diagram
PCB Layout
Test Points
Reading Point |
Adjustment |
Description |
Value |
TP1 |
CT1 |
Band A -80 Ch. |
19.655MHz |
TP1 |
CT2 |
Band B -40 Ch. |
19.880MHz |
TP1 |
CT3 |
Band C CEPT |
20.105MHz |
TP1 |
CT4 |
Band D + 40 Ch. |
20.330MHz |
TP1 |
CT12 |
Band E + 80 Ch. |
20.555MHz |
TP1 |
CT5 |
Band C CEPT |
20.1035MHz |
TP2 |
T1 |
0utput to RF local oscillator |
37.660-38.100MHz for CEPT |
TP3 |
VCO-Coil |
VCO DC Voltage |
2,5 Volt @ 27.175MHz |
TP4 |
CT11 |
AM |
10.695MHz |
TP4 |
CT10 |
LSB |
10.692MHz |
Adjustment |
Description |
Value |
RECEIVER |
|
|
T8 |
RF Input |
|
T9 |
RF Input |
|
T10 |
RF Input |
|
T11 |
1. IF |
10,7MHz |
T12 |
1. IF |
10,7MHz |
T13 |
AM IF |
455kHz |
T14 |
AM Detector |
455kHz |
T6 |
SSB IF |
455kHz |
T7 |
SSB Detector |
|
T16 |
FM Discriminator |
|
TRANSMITTER |
|
|
T1 |
PLL Output to Converter |
37.660 - 38.100MHz for CEPT |
T2 |
PLL Output to Converter |
37.660 - 38.100MHz for CEPT |
T3 |
Transmitter Output |
26.965 - 27.405MHz for CEPT |
T4 |
Transmitter Output |
26.965 - 27.405MHz for CEPT |
T5 |
Transmitter Output |
26.965 - 27.405MHz for CEPT |
L16 |
Transmitter Output |
26.965 - 27.405MHz for CEPT |
CT8 |
Transmitter Output USB/LSB |
26.965 - 27.405MHz for CEPT |
CT9 |
Transmitter Output USB/LSB |
26.965 - 27.405MHz for CEPT |
RV2 |
Bias Q8 |
|
RV11 |
AM/FM Output Power |
10 Watt |
METER |
|
|
RV4 |
RF Power Meter |
|
RV8 |
RF S-Meter |
SSB (USB/LSB) |
RV9 |
RF S-Meter |
AM/FM |
. |
|
|
RV1 |
FM Modulation |
+/- 2kHz |
RV6 |
SSB Modulation |
18 Watt p-p |
RV11 |
AM Modulation |
90% |
RV5 |
Carrier at SSB |
Adjust for NO Carrier |
Modification for SuperStar 2200
To get 10-meter, cut trace from + 5 Volt to Pin 8 and 9.
To get 12-meter, cut trace from GND to Pin 7 and connect Pin 7 to + 5 Volt.
Make a new VCO Block.
VCO-Block for CB-Radio
Re-tune both Transmitter and Receiver-part.
The VCO-Block is a part of the active oscillator in TA7310P. This will opeate between 16MHz and 19MHz.
Output from TA7310P Pin 9 to PLL02A |
is: Mixer frequency - VCO frequency. |
Output from TA7310P Pin 6 to Receiver/Transmitter |
Mixer is: Mixer frequency + VCO frequency. |
The new "VCO-BLOCK" will operate between 14MHz and 21MHz, and will then cover 10-meter, 11meter and 12-meter.
Components
D1 = BB156 (Phillips)
L1 = 5uH
C1 = 470pF
C2 = 470pF
C3 = 4,7pF
C4 = 12pF
VCO operates between 17.115MHz (Ch.1 Band A) and 18.445MHz (Ch.40 Band E),
output on Pin 6 is 36.780MHz (Ch.1 Band A) to 39.000MHz (Ch.40 Band E),
and output on Pin 9 is 2.550MHz to 2.110MHz inn all band.
The VCO-voltage (TP1) operates between 4,5 Volt (Ch.1 Band A) and 0,5 Volt (Ch.40 Band E).
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