The Poor Mans Spectrum Analyser - Spektrum

Over a year ago I bought a Nooelec Ham It Up Plus Upconverter to use as both as an Upconverter and as a wideband noise source, and an RF bridge, also known as a Return Loss or VSWR Bridge, with the intention of combining them with an RTL-SDR to create a poor mans spectrum analyser.

Now we're unable to leave the house for all but "essential trips" I've had more time to play with radio toys so I got the kit out to experiment with, and tested a couple of filters and antennas to see if it was viable.

The VSWR Bridge