I want to build a couple of simple antennas, and I have "RTL-SDR Blog R820T2 RTL2832U" dongle. It has SMA connector, which is 50omh.
I am a little bit worried about multiple transitions.
N adapter to hold 2mm wire antenna (50omh)
N-to-F adapter (50-to-75 omh)
RG6 cable, F connectors...
In regard to brass tube collinear antenna.
It is my understanding, that velocity factor is what makes it so difficult to build without proper equipment. When I saw shield build out of pipes instead of coaxial cable, I thought it was a perfect opportunity to have the pipe empty (maybe with some...