construction of dale hunt’s 80m ardf receiver · pdf fileconstruction of dale...
TRANSCRIPT
![Page 1: Construction of Dale Hunt’s 80m ARDF Receiver · PDF fileConstruction of Dale Hunt’s 80m ARDF Receiver Kit ... Schematic –Audio Amp ... 100 0.01 0.01 470 R24 1k C25 R32 47 02](https://reader033.vdocuments.site/reader033/viewer/2022061610/5a706bb47f8b9ab6538be8b5/html5/thumbnails/1.jpg)
Construction of Dale Hunt’s 80m
ARDF Receiver Kit
Kevin Nichols, KA7OFR
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Why 80m ARDF?
• No (well, much much less) reflections or
multipath
• Small antenna & receiver
• Simple to build as a kit
• Transmitters are small
• Fits well with Orienteering
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Dale Hunt’s (WB6BYU) 80m
ARDF
• Fairly small, hand-held
80m (3.5MHz) ARDF
receiver
• Single stage direct
conversion type receiver
• Easy alignment
• Described in QST,
September 2005
• PCB available from FAR
Circuits
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80m ARDF Kit Parts
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PCB, Silk Screened
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Some Helpful Items
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Schematic - +5v Reg
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Schematic – Audio Amp
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+5v Regulator and Audio Amp
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Schematic - VFO
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VFO
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Right on Frequency
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Winding Torroid Transformer
PCB Almost Finished!
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A Metal Case
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Wooden Loop Antenna Holder
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Schematic – Loop Antenna
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Threading the Loop
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Schematic – Sense Antenna
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Sense Antenna
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Sense Antenna
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Wiring the Front Panel
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Ready to Close ‘er Up
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The Finished Product!