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Cheap and dirty measurement of filter response curves
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A very compact SSB transceiver for 40 Meters with 50 watts of output power (Product detector, AF, AGC)
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A very compact SSB transceiver for 40 Meters with 50 watts of output power (IF amplifier)
This page has been moved to my new DK7IH.de-website. Please click
A very compact SSB transceiver for 40 Meters with 50 watts of output power (IF amplifier)
A very compact SSB transceiver for 40 Meters with 50 watts of output power (Receiver front end and 1st mixer)
This page has been moved to my new DK7IH.de-website. Please click
A very compact SSB transceiver for 40 Meters with 50 watts of output power (Overview and block diagram)
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An ultra compact QRO transceiver for 40 Meters with 50 to 70 watts output power
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An ultra compact QRO transceiver for 40 Meters with 50 to 70 watts output power
The semi-automatic antenna tuner – Version 1b
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DX with QRP – It really works!
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Improving spurious emissions performance in QRP transceiver DDS VFO: Replacing AD9850 by AD9951
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Improving spurious emissions performance in QRP transceiver DDS VFO: Replacing AD9850 by AD9951