When I wrote about the Tokyo Hy-Power XT-751 SSB/CW handheld, most of us couldn’t wait to get our hands on one. Unfortunately the company didn’t manage to become profitable. Losses mounted, and with a debt of 250 million yen there was no future for the company anymore.
Tokyo Hy-Power Laboratory was founded by Nobuki Wakabayashi, JA1DJW, CEO/President of Tokyo Hy-Power Labs, Inc. in 1975, in Saitama Prefecture near Tokyo, Japan. Being a private company, the initial products were antenna couplers for HF bands such as HC-500 and HC-2500.
In 1977, Tokyo Hy-Power Labs, Inc. was formally established as a developer and manufacturer of high-quality linear amplifiers, antenna tuners, etc. for amateur radio stations. One of the early products, the HL-4000 linear amplifier using 8877/3CX1500A7 by EIMAC, was the first real HF band high-power linear of its kind in Japan and used by many enthusiastic DX’ers.
As HF mobile operation grew popular, Tokyo High Power became a pioneer manufacturer of full-transistorized wide-band linears for mobile use, with models HL-200B and HL-400B being a big hit.