Ramsey Electronics HR40 manual ALL Mode Receiver KIT

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40 METER (7.0 MHZ)

ALL MODE RECEIVER KIT

Ramsey Electronics Model No.

HR40

Small in size but BIG in features:

•Easily tunes SSB, CW, RTTY and AM

•Smooth varactor tuning of any desired 250KHz segment of the 40 meter band, easily retuned

•Uses the popular SA602 IC chip for outstanding sensitivity and efficient operation

•Front panel RF Gain, Tuning and Volume controls

•Efficient LM-386 Audio amplifier drives speaker or earphones with a clean, crisp audio

•Informative manual answers questions on receivers, hookups and uses - enhances resale value, too!

•Ideal companion to the Ramsey QRP-40 CW Transmitter

•Runs on a standard 9-volt battery

•Clear, concise assembly instructions lead you to a finished product that works FIRST time!

HR40 • 1

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Contents ALL Mode Receiver KIT Ramsey Transmitter Kits HR40 Amateur Receiver KIT Ramsey HR-SERIES Amateur Receivers IntroductionAbout Direct Conversion Receivers Circuit Description Capacitors Parts Supplied with the HR40 KITLEARN-AS-YOU-BUILD Assembly Strategy HR40 Parts Layout Receiver Assembly Page Page Required for Initial Testing and Alignment Initial Testing of Your HR40Alignment Hint for ALL Direct Conversion Receivers AlignmentTuning SSB Signals Using Your ReceiverCW Operation On the AIR TRANS-RECEIVINGAdding AN LED Power on Indicator More Audio Power Another WAYSpeaker Operation Page Troubleshooting Tips Bandspread and Tuning Range Alternate Power SourcesGeneral Notes for Experienced QRP Builders Frequency Stability Direct Frequency Readout Other Methods of Dial CalibrationLM386 Audio Output PIN Count Megoh Construction Notes HR40 Ramsey Kit Warranty Factory Repair of Assembled Kits HR40 Amateur Receiver KIT Total Solder Points Estimated Assembly TimeRequired Tools Additional Suggested Items