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Super Star 360


WINScanner

WINScanner

Software for Superstar 360



Adjustment

Block Diagram


Test equipment required:
Power Supply: 13,8 VFrequency CounterDummy Load 50 ohmOscilloscope
RF Power MeterDC AmperemeterRF SSGAF SSG

Preparation alignment:
FineMid.
ClarifierMid.
SQ GAINMax.
AF GAINMax.
RF GAINMax.
MIC GAINMax.
NB/ANLOff
MID Band, Ch. 19Frequency: 27.185MHz
Reading PointConditionAdjustmentProcedure
PLL
IC3 Pin 8-Check10.2400MHz
TP1RX AML14Maximum on Oscilloscope
TP2RX AML154 Volt
TP3RX AML16Maximum on Oscilloscope
OSCILLATOR
TP5RX CWL4710.6950MHz
TP5RX USBL4810.6925MHz
TP5RX LSBL4910.6975MHz
TX AMVR627.185MHz
TP3RX AML4016.9400MHz @ HIGH Band - Ch. 19
TP3RX USBL4116.9425MHz @ HIGH Band - Ch. 19
TP3RX LSBL4216.9375MHz @ HIGH Band - CH. 19
TP3RX AML3116.4900MHz @ MID Band - Ch. 19
TP3RX USBL3216.4925MHz @ MID Band - Ch. 19
TP3RX LSBL3316.4875MHz @ MID Band - CH. 19
TP3RX AML2216.0400MHz @ LOW Band - Ch. 19
TP3RX USBL2316.0425MHz @ LOW Band - Ch. 19
TP3RX LSBL2416.0375MHz @ LOW Band - CH. 19
RECEIVER
RX USBL3Maximum
RX USBL4Maximum
RX USBL5Maximum
RX USBL6Maximum
RX USBL7Maximum
RX USBL8Maximum
RX USBL17Maximum
RX USBL18Maximum
D2RX USB
NB/ANL On
L1Noise Blanker
D2RX USB
NB/ANL On
L2Noise Blanker
RX FML9Maximum
RX FML10Maximum
RX FML5FM Diskriminator
TRANSMITTER
TP9 (+) TP7 (-)TX USBVR1110mA
TP9 (+) TP8 (-)TX USBVR1050mA
TX AML64Maximum
TX AML65Maximum
TX AML66Maximum
TX AML67Maximum
TX AML54Maximum
TX USB/LSBVR4Modulator Balance
TX AMVR114 Watt (Max. 10 Watt) RF Power Output
RF Power MeterTX AMVR8"5 Watt"
TX AMVR790% AM-Modulation
TX FMVR32 kHz FM-Deviation
S-MeterAMVR1"9"
RX AMVR2SQ Set
VR5
VR12

Microphone Connection

PinDescription
1Ground
2Microphone
3TX Key (Connect to Ground)
4(Speaker - Not in use)

Frequency List


COMPONENTS

MB8719 PLL Frequency Synthesizer
S042P Duble Balanced Mixer
TA75902P Quad Operational Amplifier
uPC1028H FM IF Amplifier and Detector
AN612 Balanced Modulator (SSB Modulator)
TA7222AP Audio Power Amplifier
2SC1969 RF Finale Transistor
2SC2166 RF Driver Transistor
2SC2086 RF Buffer Transistor
2SA473 LF Power Transistor
2SA1012 LF Power Transistor

Improved receive gain

Quieting of AM reception and improving gain of incoming signals is a common request from radio operators. In the first stages of the HF input 2SC1674 transistor can be found. This transistor is responsible for the amplification of a small detected signals. A problems exist if the transistor itself is noisy as is such the case of the 2SC1674 when compared to other low noise packages. Along with the amplification of the incoming signals is transistor noise. Replacement of this transistor with a higher gain, lower noise transistor greatly improves the signal to noise ratio of your receiver.
We will use an 2SC2999 transistor that has higher gain lower noise characteristic. Replace the 2SC1674 (TR11) with an 2SC2999 (or similar low noise and high gain transistor) to achieve this improved signal to noise ratio.
Re-Adjust L3 and L4
The gain will improved with more than 6dB with the same signal to noise ratio.