Difference between revisions of "HW-9 VFO"

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(Created page with "This is a work in process - Gathering pieces. == Features == * Replace HW-9 internal VFO with a digital VFO ** HW-9 VFO has issues * Mechanical issues * Drift due to thermal...")
 
Line 15: Line 15:
 
* Uses RIT control on HW-9
 
* Uses RIT control on HW-9
 
** +/- 1 KHz RIT
 
** +/- 1 KHz RIT
 +
* Blue Pill Microprocessor
 +
* Understands band switch sor MHz displayed
 +
* Si5351 Oscillator
 +
** 3 Outputs
 +
*** Transmit frequency
 +
*** Receiver frequency include offset plus RIT
 +
*** BFO frequency

Revision as of 15:41, 13 September 2020

This is a work in process - Gathering pieces.

Features

  • Replace HW-9 internal VFO with a digital VFO
    • HW-9 VFO has issues
  • Mechanical issues
  • Drift due to thermal
  • Lack of resolution
  • Fits within HW-9 VFO Box
  • Control frequency with rotary encoder
    • 10 Hz steps
  • DD1306 OLED Display
    • "Curved" display
  • Uses RIT control on HW-9
    • +/- 1 KHz RIT
  • Blue Pill Microprocessor
  • Understands band switch sor MHz displayed
  • Si5351 Oscillator
    • 3 Outputs
      • Transmit frequency
      • Receiver frequency include offset plus RIT
      • BFO frequency