Yes, follow mounting instructions on the 91B web page. You will need a new
plastic fan that presses on the straight shaft of the new motor, I would
recommend getting one from Dick Byrd N4UQ, he has some.
http://www.n4uq.com/
Glenn AE0Q
On Mon, Mar 9, 2026 at 7:00 PM Fern Rivard <crc@cyberlink.ca> wrote:
> *Hi Glen. Is this also a good replacement to use in the alpha 86?*
>
> *73 from Fern VE7GZ*
> On 09/03/2026 6:46 p.m., Glenn AE0Q wrote:
>
> Hello Chris,
>
> Use this Dayton motor:
> https://www.grainger.com/product/DAYTON-C-Frame-Motor-1-150-4M078?searchQuery=4m078&searchBar=true&tier=Not+Applicable
>
> Depending on the shaft and wheel of the blower now in the amp, you may need
> a new fan wheel. See lots of info on the Alpha Amplifier 91B web page:
> https://www.alpharfsystems.com/?p=1417
>
> Glenn AE0Q
> (answering remotely from home in Colorado)
> Alpha RF Systems, LLC
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>
>
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