 | Parts of this article (those related to History) need to beupdated. The reason given is: Google AI correctly says "This acquisition was a gradual process that concluded in 2018, with Motorola becoming the sole owner." Needs fact/date-check and cite of course.. Please help update this article to reflect recent events or newly available information.(August 2025) |
 | |
| Company type | Private |
|---|---|
| Industry | Electronics |
| Founded | 1959; 66 years ago (1959) inYaesu,Chūō, Tokyo,Japan |
| Founder | Sako Hasegawa |
| Headquarters | Tokyo ,Japan |
| Website | www |
Yaesu is a Japanesebrand ofamateur radio equipment, founded asYaesu Musen Co., Ltd. (八重洲無線株式会社,Yaesu Musen Kabushiki-gaisha) in 1959 by a Japanese radio amateur Sako Hasegawa (call sign JA1MP[1]) inYaesu, Japan, a district ofTokyo.
Yaesu had initially been formed with the intention to develop and manufacture commercial and amateur radiotransceivers for the Japanese market, but only five years after its formation the company had signed foreign sales agreements for export toAustralia andGermany.
In Europe, the equipment was sold under the Yaesu brand and the Sommerkamp brand. In 1963 the Swiss firm Sommerkampimported Yaesu equipment and sold it using their own brand.
Yaesu's line of equipment was first imported into the US by Spectronics, Inc. located inSignal Hill, California, in 1965. Yaesu became an important presence in the U.S. amateur radio market with the introduction and improvement of its very popularFT-101 line of equipment in the 1970s. In addition, transceiver manufacture wasoutsourced to Henry Radio inLos Angeles.
Sako Hasegawa died in 1993. Following his death, Jun Hasegawa took over as managing director.
Yaesu Musen acquired the STANDARD radio equipment brand fromMarantz Japan in 1998 and changed the company name toVertex Standard Co., Ltd. (株式会社バーテックススタンダード,Kabushiki-gaisha Bātekkusu Sutandādo) in 2000. In 2007,Motorola announced its intention to purchase 80% of Vertex Standard and form a joint venture with Tokogiken (a privately held Japanesecompany controlled by Jun Hasegawa), which would hold the other 20%. This deal was completed in January 2008.[2] The joint venture was dissolved effective January 1, 2012. The Vertex Standard land mobile division operates as a wholly owned subsidiary headquartered in Tokyo, Japan.[3] The Amateur Radio, Airband and Marine Radio business was transferred to the new company "Yaesu Musen".[4]
In 2013, YAESU launched its own digital mode of operation foramateur radio: "System Fusion". Like other digital modes, Fusion utilize a narrowerradio bandwidth. With System Fusion, special attention was paid to compatibility with analogFM radio. This was intended to simplify migration of the existing amateur radio repeaters from analog to digital technology.
In the early 2000s,minimum-shift keying (GMSK) technology emerged in the amateur radio market as the dominant digital mode. In 2013 Yaesu introduced “System Fusion,” new technology utilizingC4FM 4-levelFSK technology fortransmitting digital voice data. The System Fusion communication protocol enables devices to analyze an incoming signal and automatically determine if it is using C4FM or conventional FM mode. System Fusion also enables data transfer atfull rate with speeds reaching up to 9,600 bits per second.[5]
Yaesu is the only company with System Fusion-enabled devices.ICOM, alongside theJapan Amateur Radio League has developed devices using theD-STAR protocol. Other brands useDMR, among other modes.
Yaesu has manufactured a number of devices listed in Yaesu radio transceivers throughout its history. The focus is still on amateur radio transceivers.
