Getting Started With Software Defined Radio (SDR) - Make:
Apache Labs
Understanding the difference between SDR and HDR - Barrett Communications
FLEX-6700 Signature Series SDR Transceiver – FlexRadio
Xiegu G90 HF 20W SDR Transceiver - PileupDX.com
Software defined radios | Rohde & Schwarz
A review of the Xiegu X6100 portable SDR transceiver | Q R P e r
Software Defined Radio Transceiver: Theory and Construction of the T41-ep Amateur Radio SDT: Peter AC8GY, Albert, Purdum W8TEE, Dr. Jack: 9798446384280: Amazon.com: Books
The Next-Gen Software-Defined Radio (SDR) Transceiver Delivers Big Advances in Frequency Hopping (FH) | Analog Devices