Ramsey Electronics HR20 manual Construction Notes

Page 25

CONSTRUCTION NOTES:

HR20• 25

Image 25

Contents ALL Mode Receiver KIT Partial List of Available Kits Ramsey Transmitter Kits HR20 Amateur Receiver KIT Ramsey HR-SERIES Amateur Receivers IntroductionAbout Direct Conversion Receivers Circuit Description Parts Supplied with the HR20 KIT CapacitorsLEARN-AS-YOU-BUILD Receiver Assembly Strategy HR20 HR20 Parts Layout Diagram Receiver Assembly HR20 HR20 Required for Initial Testing and Alignment Initial Testing of Your HR20Alignment Hint for ALL Direct Conversion Receivers AlignmentTuning SSB Signals Using Your ReceiverCW Operation On the AIR TRANS-RECEIVINGSpeaker Operation Adding AN LED Power on Indicator More Audio Power Another WAYTroubleshooting Tips General Notes for Experienced QRP Builders Alternate Power SourcesBandspread and Tuning Range Other Methods of Dial Calibration Frequency StabilityDirect Frequency Readout LM386 Audio Output HR20 Construction Notes Ramsey Kit Warranty Factory Repair of Assembled Kits HR20 Amateur Receiver KIT Total Solder Points Estimated Assembly TimeRequired Tools Additional Suggested Items