Motorola, Inc. (NYSE: MOT) announced today that its subsidiary, MI, Inc., has successfully completed its tender offer to acquire a controlling interest in Vertex Standard Co., Ltd.(JASDAQ: 6821), a global provider of 2-way radio communication solutions. The tender offer period expired on January 15, 2008, with approximately 5.4 million shares tendered and accepted

Motorola will have a total ownership stake of approximately 78% of Vertex Standard on a fully diluted basis (excluding certain stock acquisition rights that are scheduled to be cancelled), while Tokogiken Co., Ltd., a privately held Japanese company controlled by Vertex Standard’s president and CEO Jun Hasegawa, will retain a 20% stake. Through a subsequent restructuring process Motorola will own 80% of Vertex Standard.

Following the restructuring, which will be implemented after the settlement of the tender offer, Vertex Standard will be de-listed from the JASDAQ. The joint venture company will continue to be called "Vertex Standard Co., Ltd." and will become a subsidiary of Motorola, with headquarters in Tokyo.

So it looks like Motorola does own Vertex but they seem to be pretty much separate.  I'm guessing, from what I find online looking for radios, they are using Vertex to go after a market segment that would not likely buy Big M.  Plus there seems to be quite a bit of Vertex Marine stuff and Yeasu is one of the big amateur brands.