What is this ruining my 20m band reception?
Hi all, hope this is allowed here as I am new about.
I recently moved into a new property, far from the city and - I thought - ideally located for getting back into radio. So I spent the weekend hoisting up and tuning a wire dipole centred on 14.175MHz/20m band. I got it up high in the trees by the house, aimed it at a heading I thought would be interesting, and tonight I finally hooked up the gear. I was excited to have a poke around the spectrum, free from interference and metropolitan noise.
Instead, the whole of the amateur band and a good portion of spectrum around it was basically flooded with this weird signal, which looks like it is from a single source but with (harmonics?) right though the band spaced every 4kHz or so. (see screenshot attached).
What in the heck is this and how is it allowed to make such a mess of the spectrum? or is it me? I have verified it is there on the HackRF, as well as on my TinySA and I can hear it on several radios too. It is weirdly inconsistent.
I'd appreciate any input from you guys... I have a baseband recording too of a couple of minutes of this, can send to anyone interested but it's about 1.2GB.
FYI - I'm located in South Australia, about 50km from the city.