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, 11-
meter 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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