[Elecraft] K3: Relay noise?

wayne burdick n6kr at elecraft.com
Wed Feb 4 18:01:56 EST 2009


It may be the delta in supply voltage on keydown slightly stimulating 
one or more relay coils. The DC shift could move the contacts a tiny 
bit. Or it might be an extremely small timing window, associated with 
T/R switching, that puts a little glitch on a relay control line. 
Either way it's nowhere near enough to change the state of a relay.

Nothing to worry about; in fact it might be therapeutic. But I'll 
listen for it myself.

73,
Wayne
N6KR

>  My K3 makes a very quiet relay-like keying noise....

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