TRX-Duo is a Red Pitaya clone for Software Defined Radio

If you've noticed the TRX-DUO Software Defined Radio transceiver, you might have wondered how it compares to other choices like Red Pitaya or HackRF. [Tech Minds] obliges with a review of the Red device in the video below.

While this device is not cheap, it is also not as expensive as some of its competitors. Sure, you can get an RTL-SDR dongle for a fraction of the price, but then you're missing out on the transmission. The device is quite powerful compared to a cheap software defined radio:

Frequency: 10 kHz to 60 MHz Processor: Zynq SoC with dual-core ARM Cortex A9 RAM: 512 MB Operating system: Linux Connectivity: Ethernet and USB connectivity (WiFi with a dongle) ADC: 16-bit at 125 MS/s (2 channels) DAC: 14-bit at 125 MS/s (2 channels)

The map boots to an SD card and there are several to choose from. The video shows two different images. One has a number of apps that run on the device and will also work on a Red Pitaya. The device displays a browser menu with various options and the result is quite impressive. Using the box as a WSPR beacon was pretty well heard considering the low power output. He was, however, able to hear the world easily.

You can get a lower performing Red Pitaya model for around $100 less than list price. However, for something comparable, you'll pay more for the Red Pitaya, and depending on capacity, possibly a lot more, although you get more capacity for the higher price.

You can do a lot more with an SDR transmitter; having both transmission and reception opens up many new projects. Sure, the pre-made apps are great, but if you get one, you'll want to try GNU Radio.