ILER-DDS V2.1 Specifications

  • Universal VFO for all ILER, MFT, EGV transceivers and similar projects.
  • S-METER level indicator with S-0 to S-9 and 10-level graphica bar.
  • S-METER voltage input 0 to 5V direct or inverted, with independent adjustment of ach level.
  • Dual VFO, VFO-A and VFO-B
  • RIT / SPLIT function without limit.
  • Configurable Tuning Steps: selected ones or all steps. 10Hz to 10Mhz
  • Programmable IF Offset  IF=RF+VFO, IF=VFO-RF, IF= RF-VFO, IF=0 (RF generator)
  • Programmable  upper and lower band limit.
  • Fine calibration of the frequency reference by software (up to 1Hz accuracy).
  • Voltmeter display with 0.1V accuracy (0.01V calibration).
  • Auxiliary I/O pins for expansioin..
  • 2 x SINEWAVE OUTPUTS.
  • 2 x SQUARE OUTPUTS.
  • LOW SPURIOUS. TX and RX mixers spectrum is equal to or better than a VXO one.
  • DDS AD9850BRS integrated circuit.
  • Reference clock: 125MHz
  • Signal output level at 200 ohms: 300mVpp 35MHz // 800mVpp 20MHz
  • User programmable "Welcom message": callsign or name.
  • LOCK function for push button and encoder.
  • Automatic record of last used frequency or current frequency.
  • 2 Line x 8 character LCD with  AUTO-ON-OFF configurable backlight..
  • Power supply: 9-14V about 100mA.Outboard encoder for a more versatile mechanical configuration.
  • Small size "sandwich" module, easy to fix with srews or glue.
  • Total spaced used: 51 x 36 x 40 mm W-L-H (with soldered LCD 35 mm L). LCD window size 29 x 19 mm.
  • Soft touch non stop rotary encoder (like commercial equipment).
  • 24 steps per revolution encoder (maximun speed 36 steps/s).
  • Simple, direct, and immediate configuration through menus.
  • All settings are stored in EEPROM (1 million write/read cycles (minimum) and 100-year).
  • PIC18F2525-I/SP microcontroller 20MHz clock.
  • Complete kit for an easy construction: all parts, encoder and 3 PCB included (SMD parts already soldered).

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