OE's digital filtering DOES help, but often the filter is fooled or else specified sensitivity is unattain- able. In Damien's review, he emphasizes the importance of a limited bandwidth antenna. Take this recommendation seriously. In this role, using the M1, I've had fun snagging frequencies used by all sorts of Air Force base agencies in a manner just as Damien described. Because these extra modes relied on the unreliable Hi-Z inputs, I don't miss them.
All models are available only direct from the manufacturer in Florida.
It's always darkest just before it gets pitch black.