Hi, Matt, On Fri, Nov 20, 2015 at 11:13 AM, Cliff Frescura <[email protected]> wrote:
> Sounds like the amp is plugged into an outlet that is potentially > overloaded > or underrated. > > Changing the tap won't solve the problem and may damage the amp. > Precisely so! Put an AC voltmeter on the AC line in a spare socket where the KPA500 is plugged in. Key it and watch the AC voltage. If it sags any more than 2 or 3 volts, you have a wiring problem of some sort somewhere. Amplifiers really should be on their own circuit (or a good stiff circuit if shared) back to the breaker box. *Especially* so if its 120V, even a KPA 500, which will draw a KW from the AC key down. Precipitous keydown drops in AC voltage at the socket means a fire hazard, and possibly some nasty problems in your AC wiring. No fooling around with this problem. Sometimes these kinds of things come from a problem in the power line neutral somewhere. That is really dangerous. 73 and Good Luck, Guy K2AV ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
