HF SDR (Software Defined Radio) S/H Sample and Hold Transceiver ADTRX1 from 30 KHz to 35 MHz - Make it Simple as Possible with Outstanding Performances Part 1

All SDR receiver designs have some positive and some negative aspects of design. The SDR receiver DR2 with I/Q outputs which I had been published first , it is mine the most popular design. I received a lot positive comments all over the world and I read many positive impressions on forums. Two things returned me back to this design. 1.

Receiving range from 30 kHz to 35 MHz with external LO and Vcc=+6 V for digital ICs. IIP3 27-29 dBm and it depends from setting and used programs (all with 16 bit sound cards). Image rejection is possible adjust to 35-60 dB 12 kHz from center frequency. Sensitivity 3-5 uV for 10 dB S/N ratio, max S/N ratio I measured was 70 dB.

Software Defined Radio Projects, HF Receivers and Transceivers projects by YU1LM/QRP. Hits: 939 | Votes: 3 | Rating: 10.00. You will find this resource in just one category on our links directory.

This synthesizer is designed to work with an SDR transceiver in conjunction with modifed PowerSDR software initially used for the SDR-1000. The frequency of continuous overlap when using the original synthesizer microcircuit is from 1 MHz to 30 MHz, the upper limit depends on the quality of the Si5351 microcircuit used (may be less than 30 MHz).

This document describes the development of a simple SDR receiver called the DR1 using a sample and hold circuit with a 74HC4066 chip for demodulation. The receiver has no coils or real RF components and works from 30 kHz to 70 MHz connected to a PC sound card. The design is inspired by previous work but aims to be even simpler.

Advantage is evident very much in my SDR transmission projects DT1, DT2 and DT2A. In receivers this 50/50 % ratio is not so important like for the transmission except for increasing max input frequencies with used hardware realization. Here is a new one monoband HF SDR S/H receiver called DR2C with LO at receiving

QRP YU1LM SDR-RX TX - Free ebook download as PDF File (.pdf), Text File (.txt) or read book online for free. This document summarizes several amateur radio receiver and transmitter designs by the author spanning from the 1970s to the 2000s. It describes the author's early experiments building tube and superheterodyne receivers as a teenager.

HF SDR S/H Sample and Hold Receiver DR2E (Modification of DR2 with new Audio Instrumental Amplifiers) from 30 KHz to 35 MHz-Make it Simple as Possible with Outstanding Performances

After some investigation, I selected the AVALA-01, which was developed by. Tasic' Sinisa - Tasa YU1LM. His YU1LM/QRP website is a treasure trove of SDR-related designs. Tasa has gone on to...