Hi, I only got my hands on a limesdr less then a week ago. And having read some of the older posts on this forum I was starting to get abit worried about the sdr’s HF performance.
Im using no filters, and no external LNA and have not yet modified it.
But with nothing but a cheap chineese upconverter and before even connecting my outside random wire dipole antenna, only tested with the dipole that came with my rtlsdr v3, mounted inside I am allready getting great signals on 80m and 40m.
I could not be more happy so far, and there is still so much room for improvment by filtering and connecting better antennas!
For transmit I will be using a 10w amp, and a small preamp. Should be great as a start.
Im patiently awaiting some band pass filters, and getting excited to see how much better it can be with decent filtering:)
Im not even sure mofifying the SDR will be needed, but might do it anyway just to see if reception can improve even more.