Projects for the amateur radio engineer. Hardware, software, electronics and test equipment for the amateur community.
By Peter Baier (DK7IH) Abstract This article shows how to apply a off-the-shelf time signal receiver to a microcontroller, refers about the signal coding and describes the necessary software written in “embedded C”. Hardware Receiver modules are available through various vendors on the internet, a respective search pattern could be this one. Time signal transmitters…
by Peter Baier (DK7IH) After years of indoor model-railroading I have started building a medium-sized garden railroad this spring after having completely redesigned our garden by removing trees and therefore getting space for the railroad layout. Normally model trains are track-powerd. For outdoor operation this is not the best idea because due to weathering tracks’…
Chapter 1: General design and oscillator circuits (This posting) Chapter 2: Receiver (coming soon) Chapter 3: Transmitter (coming soon) Chapter 4: Cabinet, frequency counter, antenna etc. (coming soon) Chapter 5: Final remakrs (coming soon) This radio also is some sort of “rebuilt”. in 2015 I developed a handheld transceiver with about 5 watts of output…
The “Lean Design Transceiver” has been a project to build a simplified but effective 100% analog SSB QRP transceiver with minimum effort. The radio worked fine but there is never anything that can not be improved. So, this transceiver, originally built in 2018, also has been scheduled for a revision. The problems were minor, …