23%20cm%20Synthesized%20Transverter - PowerPoint PPT Presentation

Title: 23%20cm%20Synthesized%20Transverter


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23 cm Synthesized Transverter
AD6IW
23 cm Synthesized Transverter
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23cm Band

• 1240 MHz - 1300 MHz
• 1296. 1 MHz weak signal, cw/ssb.
• 1270 MHz satellite band, multi - mode.
• 1280 MHz repeater, 12 MHz shift.
• 1294.5 MHz national FM simplex freq.
• 1253.25 MHz ATV.

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Block Diagram
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PLL
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23 cm PLL
AD6IW
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13 cm PLL
AD6IW
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23 cm Transverter
AD6IW
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23 cm Transverter - Modification
AD6IW
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23 cm Transverter - Modification Top
AD6IW
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23 cm Transverter - Amplifier
AD6IW
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Controller Circuit Diagram
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Controller
AD6IW
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Controller - Display Side
AD6IW
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Controller - Component Side
AD6IW
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E²PROM Detail
AD6IW
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Connector - Detail
AD6IW
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Encoder Detail
AD6IW
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Encoder Detail
Built-in Controller
AD6IW
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Serial Port
AD6IW
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Antenna Switch
AD6IW
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Transverter - inside
AD6IW
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Side view
AD6IW
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Rear view
AD6IW
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Operational Modes
AD6IW
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Operational modes
PLL or crystal oscillator mode
Offset frequency shift setting /- 12.5 MHz in
250 kHz shift
IF frequency shift 144 - 146 MHz in 250 kHz step
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Operational modes
Transmission on/off time setting
Synthesizer unlocked
Dimmer setting
Output power setting
Reference frequency setting 100 Hz step
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Phase noise - big picture
AD6IW
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Phase Noise
AD6IW
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Test results
Frequency stability 2.5 ppm Output power 42
dBm MDS -150 dB NF 0.6 dB Gain 30 dB
AD6IW
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Tools

• Analog Devices 812 Simulator V 3.650
• Keil Microvision µVision 2 V2.14
• Flash Magic V1.70
• WinIsp V2.17 Philips
• ADI SimPLL V1.0
• National Semiconductor WebBench PLL Simulator
• AppCad Agilent Technologies V2.50
• RFsim99 V1.03
• Smith V1.82
• PLL Code Loader V212
• Eagle V4.0
• Orcad Capture Spice

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