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OHR 500Photo


The Oak Hills Research OHR500 is a five band CW transceiver that covers 150 KHz of 80, 40, 30, 20 and 15M bands. Some of the features include a new quieter single signal superhet receiver, diode ring mixer, new ultra stable pre-mix VFO providing high side L.O. injection. The VFO is tuned with a new high quality double bearing air variable cap.

Additional features:

  • RIT
  • four pole crystal filter
    four pole audio filter switchable from front panel
  •  TX power out control on front panel
  • High performance AGC circuit which can be turned off at front panel
  • RF gain control
  • Ttrue sinewave sidetone with separate frequency and level controls
  • Room filling audio at rear panel speaker jack.

A scope is NOT required for alignment. We have included on-board RF probes so you can use your DMM and frequency counter for alignment. The L.O. signal is available at a rear panel jack for use with the DD-1 digital display. Chassis is pre-punched for optional keyer kit. The transmitter provides 4-5 watts out on all bands except 15M which is 3-3.5 watts. The transmitter also has a silky smooth QSK circuit. The transceiver operates on 12 - 13.6VDC. The current drain on RX is 270mA and 1A on transmit. 

The completed transceiver measures (HWD) 10cm* 21cm * 21cm  (4" x 8 1/4" x 8 1/4").
The kit is complete with cabinet, three high quality silkscreened PCB's, all components and instructions.

For Detailed insight use the Detail button left.

QRPproject Warranty of Functionality
Non functional kits will be made functional by QRPproject,  if you send your non functional kit to QRPproject to be repaired, you only have to pay shipment and WoF-Fix-price.

This kit is not longer available by QRPproject, if you are interested order directly from OHR


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