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												04/03/2015 | TEN-TEC and Alpha Purchased from RF ConceptsLess than a year after TEN-TEC and Alpha Amplifiers merged under the RF Concepts banner, the companies have changed hands. 
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												12/07/2009 | Scott Robbins, W4PA, to Purchase VibroplexScott Robbins, W4PA, of Knoxville, Tennessee, told the ARRL that he has signed an agreement to purchase The Vibroplex Company, Inc from present owner Felton "Mitch" Mitchell, W4OA, effective December 21, 2009. "Vibroplex represents the grea 
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