Shahriar from the Signal Path Blog has done an excellent review and teardown of ERASynth Micro. In case you haven't seen it, you may find a link to the video below. We highly recommend you to watch it as it is very detailed and informative.
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Last update posted Oct 11, 2019
12.5 MHz to 6.4 GHz RF Signal Generator
Free US Shipping / $25 Worldwide
Makers of RF test and measurement equipment.
Software and Firmware Developer, PCB Designer
The first ever truly embedded SDR
An open source, Arduino-compatible RF signal generator with Wi-Fi connectivity
An open, full-duplex, USB stick radio for femtocells and more.