This is the best receiver I have ever used. It took me EXACTLY to my transmitter. I have an old model of this unit that doesn't have the fine tune ability, and compared them side by side. The new one took me within 3 feet of the Marshal Scout and still got a directional signal, but the old one was getting a signal in all directions at 6'.
I lost my bird two weeks prior to getting the new unit, and recreated the chase with the new unit. I put the Marshall Powermax back where I recovered her. The old receiver gave a faint signal. The new receiver was loud and clear. It was 7 miles away and over 2 mountains, but obvious I was no where near the limits of the new unit, and that was without a yagi.
My old one is also a Tracker Maxima made several years ago, but I think they sold out, but the Tracker name stayed. I will NEVER use anything else. This one outperforms and has more features than other receivers well over $1000. It is a bargain, and I can't recommend it enough.