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ISLAND AMPLIFIER – Alpha Service, Panels & Parts


ISLAND AMPLIFIER was founded by John Stanford, KF6I, in 2014.  ISLAND AMPLIFIER offers 1) Professional HF amplifier repair service for hams and 2) Legacy products to extend the life of ETO ALPHA BRAND AMPLIFIERS used in amateur radio communications.  These amplifiers include the Alpha 274, 374, 374A, 76A, 77Sx, 77Dx, 78, 91A and 99 models.

Amplifier Repair

John is experienced in the repair of any brand of HF linear amplifier, both vacuum tube and solid-state technologies, including ACOM, ALPHA, BTI, Command Technologies, Collins, HEATHKIT, ICOM, KENWOOD, Mentron, Ten-Tec, YAESU and others.  John specializes in the repair of legacy and new ALPHA Amplifiers.  He can be contacted at (714) 412-7399 or

Product History

In 2014, John was approached by Mac McCullough, W5MC, to develop a replacement HV diode assembly for his Alpha 77Sx amplifier.  Mac had just upgraded his amplifier with a new transformer and capacitor and wanted to replace the high voltage rectifier board with a modern, up-to-date design.  John and Mac collaborated on the development of this board …. the rest is history.  Thirty assemblies have been installed.

John began servicing HF linear amplifiers professionally in 2014.  One need that immediately arose in the repair efforts was a replacement panel for the Alpha 76A and Alpha 78 series of amplifiers.  A problem with the original paint used on many legacy Alpha amplifiers leaves the panel gooey, sticky and prone to scratches after a few years.

To solve this problem, John began to manufacture replacement front panels for the Alpha 76A, 78 and 374A amplifiers.  In 2016, John added U-covers, or wrappers, for the same amplifiers.  In 2017, John added Alpha 77Sx and 77Dx front, top and side panels to the growing list of products.

Product Offerings

Select SHOP from the MENU page for itemized list of products and prices.

All of these products will eventually be available for purchase directly on this website.   Until this website is finalized, you can contact John, KF6I, at (714) 412-7399.


6 thoughts on “ISLAND AMPLIFIER – Alpha Service, Panels & Parts

  1. Have had 1 transaction with John so far. Very impressed with John’s customer service approach. He’ll figure out a way to help you.

    Nice website John and best of luck with Island Amplifier.


    Noll W9RN

    1. Thanks Noll. Website is in its infancy. Curious how you found it.


      1. Hi John, was on QTH.COM , classified . Saw ad for panels and a website listed which piqued my curiosity .

        Noticed your mention of working on BTI’s. Have a LK-2000HD which hasn’t been fired up for over a decade . Afraid to turn on now. Too bad you are so far away .

        Checked the June issue of QST. Didn’t see any ads for Island . Maybe that’s next ? DID see on page 133 good sized ad from Alpha RF systems which actually surprised me a bit .



        1. Hi Norm,

          Ok. Thanks. I just updated the QTH listings. No ads in QST yet.

          Yes, the BTI I have has the 3-1000 tube in it. I still have it but it’s really clunky. Big footprint and has mechanical issues and missing parts. But it works.

          I’ll be at Dayton this weekend. Maybe see you there.


          1. Unfortunately I won’t be there but some of the GMDXA will. Stop by in the flea market … 9066 – 9068. N9AW, Jerry is a 9500 owner . He’s selling some of my odds and ends .

            Have fun !

            Noll W9RN

  2. Great website John!

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