Projects for the amateur radio engineer. Hardware, software, electronics and test equipment for the amateur community.
One of the main advantages when you replace an LC-controlled VFO by a DDS-System is, aside from frequency stability, the possibility to control your VFO(s) by software. When designing my handheld QRP-rig I intenionally left the 2 ports for RS232-communication at the ATMega328 unused. I always had in mind that I might one day setup…
by Peter Rachow (DK7IH) => Zur deutschen Version dieses Artikels Notice: Read about the software for this DDS-controlled transceiver here: https://dk7ih.de/2015/08/15/update-software-for-dds-controlled-qrp-ssb-handheld-transceiver-ad9835-atmega328p/ I have really been satisfied with my last QRP SSB rig. It performs very fine. But I wanted a transceiver still a little bit smaller. And it should be easier to set up the…