Later models added a 350 Ohm 20W series resistor and a Hi/Lo toggle switch
on the front panel.
Others have added a relay to switch the speed between RX and TX.
I use headphones and the noise is not even noticable.
Carl
KM1H
----- Original Message -----
From: "DAVID MILLER" <davidbmiller@sbcglobal.net>
To: <Amps@contesting.com>
Sent: Friday, February 17, 2012 1:01 PM
Subject: [Amps] amp supply lk500 za
>I have an used lk500za amp and although it works great the fan noise is
>deafing does any one have a mod for it?
>
> David Miller
> KB5DNR
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> Amps@contesting.com
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>
>
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