Techcontent

FT290R modification
Adding a +ve voltage on transmit for single cable transverter working

FT817 modification
This is a similar mod for the FT817 and appears on DL1RQs web page.

FT817 PTT mods
Another version for later versions of the FT817 as well as other FT817 mods. You will need to register for this site.

VLNA2 Issue B3 PDF

Temperature plot
Horizon temperature plot using Continuum and the SDR-IQ