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Mic AMP TA2011S Balanced Modulator NJM2594 TX IF AMP 2SK241 RF IF AMP 3SK114 RF IF AMP 3SK114 RF IF AMP 3SK114 Balanced Modulator NJM2594 AF AMP 2SC1815.

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Presentation on theme: "Mic AMP TA2011S Balanced Modulator NJM2594 TX IF AMP 2SK241 RF IF AMP 3SK114 RF IF AMP 3SK114 RF IF AMP 3SK114 Balanced Modulator NJM2594 AF AMP 2SC1815."— Presentation transcript:

1 Mic AMP TA2011S Balanced Modulator NJM2594 TX IF AMP 2SK241 RF IF AMP 3SK114 RF IF AMP 3SK114 RF IF AMP 3SK114 Balanced Modulator NJM2594 AF AMP 2SC1815 AF Power LM386 Mic 6MHz Filter SP AGC AMP 2SC1815 AGC AMP LM324 AGC DET 1N60 X2 AGC CW Side Tone 74HC02 Side Tone TX IF OUT RX IF IN 2 ND OSC TX Mark-94 Main part block diagram AM Out

2 Mark-94 RF block diagram RF AMP 3SK183 MIXER 2SK241 X2 IF AMP 2SK241 To Main AM Out From VFO MHz MIXER 2SK241 X2 Buffer 3SK114 Pre-Driver 2SC2053 Driver 2SC2078 Final 2SC1945 TX IF IN 2 nd MIXER/OSC IF AMPAM DET LA KHz AM Mode 5545KHz 2 nd OSC Carrier Level control 2SC1818/2SA1015 From MPU From RX ANT To Main RX IF In SSB/CW AM TX ANT RF AMP MGF4910C

3 Mark-94 VFO part PLL TC9256AP From MPU Active LPF 2SK30/2SC1815 VCO 2SC1907E Buffer 2SC1907E 1SV101 X2 LPF BPF VFO Out DDS AD9834 LPF Buffer 2SK241 Mark-94 2nd OSC part DDS AD9834 From MPU LPF Buffer 2SK241 RX 2 nd OSC Buffer 2SK241 TX 2 nd OSC Keying 2SC1815

4 CONT CPU 16F877A DISP CPU 16F877A LCD display VFO PLL/DDS Encoder Pulse CW Key (Dot&Line) PTT 2 ND OSC Key Speed SDO SDI SCK SDO SDI Crystal Module 16MHz KeyBoard Mode Control SideTone /Mute/BZ Mark-94 MPU part


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