I would definitely hold off on this device. The owner did not show up at Dayton this year. That’s a bad sign to be a ham radio vendor, & not show up for Dayton. Think, MFJ wasn’t at Dayton for the first time ever, & we all know why. Stores are refusing to carry the product because they are problematic, & have taken back radios customers are unhappy with. But Bob doesn’t give refunds, so he didn’t want to be confronted by vendors demanding their money back. A great idea, just not ready for prime time yet. And they don’t work on AT&T. This isn’t speculation, I know the guy who helps Bob at the ham fests. He offered to run Bob’s booth without him, but was told “no”. So I‘d hold off on this device until the future about them is clear.