Eberwein's purchases of DRAD beginning early this year caught my attention. As he began purchasing almost daily, I continued to look over the financials and like you did not like what I saw. His purchasing continued, and I was kicking myself as the shares rose...which is why when I saw him begin purchasing NTS in a similar way, I followed this time.
I have quickly reviewed the DRAD financials again and still don't like what I see. However, if you read the press release for the new CEO announcement, Eberwein makes a comment that the new CEO has a similar mindset to the board in that they want to increase cash flow and repurchase shares. So, they clearly do not plan to sit still and are looking to continue increasing the share price. I suppose if the shares dip, maybe I'll buy some - but I'm still not excited about the company financials at this time.
I don't know any specifics regarding their product/technology or what the market or potential is.
If you are interested in a company in a similar line of business, with a similar/strong activist board (led by Nick Swenson) buying up shares, that is in the midst of a turnaround, and has an extremely low float, check out PDEX. You need a little patience with it, but they are on the verge of turning the corner.