Thanks for reading my first post.
I’ve recently put together a Pi 3B+ with a Prostick Plus to allow me to receive ADS-B. I was receiving up to 89 nm with a discone at 31M ASL on the rear of my house.
I added a 10 element collinear in the hope of receiving signals that bit further away, it has gone worse if anything, down to 79nm. This antenna is away from the discone at roughly the same height, give or take a few cm.
Please see the attached heatscan of the local radio environment, could somebody help me with them and advise if filters are required? I’ve run the gain optimisation script and it pointed me towards 44.5, duly set and running.
Any advice gratefully received. I’ve posted a second image below as being a new user I can only post one image at a time