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VNA page


My implementation of N2PK Vector Network Analyzer project

60kHz to 60MHz Vector Network Analyzer. Laboratory quality

 

 

VNA assembly.

Assembling the VNA.

 

USB adaptor/Power converter for VNA. (for boards version4XX)

 

Assembling the measurement bridge.

 

USB assembly

Assembling the USB adaptor/Power converter.

       

 

State of the Art Passive Radio Preselector for MW band. Digital tunable

 
  MW band Preselector page.   Project detail  
 

 

160m to 6m high perfomance down conversion HF receiver project

 
 

  Receiver Overview Diagram.  
         
 

Front End

  Receiver Front End subsystem comprising:

Band Pass Filters box unit
Attenuator board
12 band pass filter boards
IF notch board
BPF I2C controller board

Front End box unit
H - Mode Mixer
9MHz Diplexer
SSB/CW Roofing Crystal Filters
Mixer I2C control

Local Oscillator
 

  Receiver Back End subsystem comprising:

IF Selectivity Board box unit
IF Crystal Filters
Switches
Pre-Amplifier


IF Variable Gain Board box unit
Signal Path
Control Path
Closing the Loop
Set-point Reference

IF Detector Board box unit
Noise Filters
Quadrature Sampling Detector

Audio amplifier box unit

Power Supply
Rectifier board
Switcher box module

Averall Control Logic

 

 

Front End page.

  USB-I2C bus control for Front End project.

  Fractal antenna   Fractal antenna experiment

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