Flag Counter 

Open QRP
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This excellent kit is sold by Kanga Products of Atherton, Greater Manchester. Although complex to build a lot of thought has gone into the assembly instructions with the build being divided up into sections and the components for each section individually bagged and identified.                     

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OpenQRP 40 Meter Transceiver Specifications:-

  • Single Band : 40 meters (other bands with component changes)
  • Tuning range: 60KHz minimum via varactor diode
  • Tuning Control 10K 10 turn potentiometer
  • Receiver Incremental Tuning, Fine Tune Option
  • Mode: CW only
  • Receiver MSD: TBD uV
  • Four crystal IF filter with 690 Hz center frequency
  • IF Selectivity: 400 Hz
  • 4 pole audio active bandpass filter
  • Receive current: Active: 50 ma No signal: 30 ma
  • Transmitter: Final Amplifier IRF510 MOSFET, 6-8 watts output at 13.5 volts
  • Spurs: TBD dBc maximum
  • CPU: ATmega168 @ 16.384 MHz based on
  • Arduino microcontroller platform
  • Open source software, written entirely in C
  • In-circuit programming (ICSP)
  • 5 to 55 wpm internal iambic keyer,
  • Iambic A and B, keyer emulation modes
  • Six Pushbutton inputs
  • 16 character by 2 line LCD display
  • Frequency readout 100Hz resolution
  • Relative signal strength indicator
  • Built in CW decoder
  • Power supply voltage readout
  • Front panel controls: Tune, RIT, and RF gain
  • On board trimmers: AF gain trim, LCD,Contrast trim, Tx Drive adjust
  • Coax 50 ohm output, modular BNC jack
  • 1/8” Jack inputs for Iambic Paddle and Audio output (stereo headphones)
  • 2.5mm Power Supply jack
  • PC Board Size: 4.5” wide X 5.0” deep
  • Painted Aluminum Enclosure with silkscreened legends
  • Power supply voltage: 9 volts minimum, 16 volts maximum.
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