[VK2TPM] uSDX QRP transceiver built
 

marxy's musing on technology

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uSDX QRP transceiver built

Posted: 05 Dec 2020 04:20 PM PST
http://blog.marxy.org/2020/12/usdx-q...ver-built.html

The uSDX is a fascinating new multi-mode transceiver design that uses an
Atmel ATMega328P processor (normally seen in an Arduino) to do the digital
signal processing for receive and transmit. The design comes out of an
amazing hack of the QRP-Labs QCX CW transceiver.The transmitter is a very
efficient class E design and PWM modulation combined with amplitude
modulation gives a passable single