Ultimate Ferrite Solution
edited January 2018 in Installation, Antennas and Interference
Clifton Labs (Jack Smith), which is now defunct, used to offer the Z5100A which is the best thing you can get for cleaning up your coax lines. Unfortunately, DX Eng is not offering it. If you can find one, great. If you can't, contact me via mail.
Having a high impedance choke plus "ground" on the unbalanced side helps a lot. There's no such thing as direct RF ground it's more a ground impedance. But if your choke(s) is high-Z enough, it will be like putting a low value resistor at the bottom end of a voltge divider.
There is no difficulty in buying ferrites for chokes. For receive in particular there's no need to layout lots of cash. Choose from parts on this page: