Have you contacted at Ray at Connin at QRO Technologies ??
From 1988 through 1994, Ray W. Connin (KB8VU), was co-owner and co-founder of Command Technologies, Inc. with Pat Stein (N8BRA). Together they developed the Commander series of HF and VHF linear amplifiers.
These amplifiers were well known for their high performance, high quality, and reasonable cost.
In 1994, Pat Stein & Ray Connin split the company in half.
Based on the flip of a coin, Pat Stein kept the Command Technologies company name and the Commander series of amplifiers.
In October 1994, Ray W. Connin (KB8VU) started QRO Technologies. Ray has focuced on developing the QRO line of amplifiers around 3-500C, 4CX800A, and 4CX1600B vacuum tube designs.
1117 West High Street
P.O. Box 939
Bryan, Ohio 43506
Telephone & Fax: (419) 636-2721
If you call by telephone - if he is not in -- leave a voice mail, Ray will return your call.
IF you send Ray an email, he usually responds quickly.