Toysoft
Japhar Member
Carpal Tunnel
Registered: 10/22/10
Posts: 2639
Olders, all Tristar Models
Code:
Tristar 747 AM/FM/BLU 120 Mobile
Tristar 777 8 W AM/FM
20 W BLU/CW AM/FM/BLU/CW 120 Mobile
Tristar 797 8 W AM/FM
20 W BLU/CW AM/FM/BLU/CW 200 Mobile
Tristar 848 8 W AM/FM
20 W BLU/CW AM/FM/BLU/CW 240 Mobile
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. Re-tune both Transmitter and Receiver-part.
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). Frequency List for SuperStar 2200
Code:
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
Toysoft
Japhar Member
Carpal Tunnel
Registered: 10/22/10
Posts: 2639
The VCO-Block is a part of the active oscillator in TA7310P. This will operate 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, 11-meter and 12-meter.
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