#arduino
#wb2cba
uSDR uSDX+ Plus V2 Review 10/15/17/20/30/40/60/80m 8 Band SDR All Mode HF SSB QRP Transceiver + 4000mAh Battery

Hello Guys, thanks for tuning in to my channel!
Spectral purity check: This is an output power and spectrum measurement of the new 2nd version of the Chinese uSDXplus labelled as uSDX+ SOFTWARE DEFINED RADIO.
There are a few hardware and FW issues as explained in the video.
It's probably a budget friendly trx for SOTA, POTA, or any other portable activities.
Please check out the original work of DL2MAN

Spectral Purity measurement done with a supply of 13.8V DC, and 50 Ohm (50W) dummy load . Current was not measured.

Frequency | Power o/p | Reference (dBm) | Harmonics (dBm)
3.7MHz 3.9W 11.6dBm 50.4dBm
5.3MHz 4.9W 7.6dBm 50dBm
7.1MHz 5.1W 5.1dBm 51.2dBm 47.6dBm
10.136MHz 4.3W 3.2dBm 46.4dBm 48.4dBm
14.074MHz 5.1W 0.8dBm 40.4dBm 39.6dBm
18.1MHz 3.9W 0.8dBm 44(spur)dBm 38.4dBm
21.074MHz 5.3W 5.6dBm 54dBm 47.2dBm
28.074 4.5W 4.4dBm 48.2(spur)dBm 52dBm