[Elecraft] Re: KX1 amplified external speaker $5

[John Harper]

>the 2 x AAA batteries completely ... anybody got any ideas (serious
>replies only preferred <g>) to show that the power switch is on?

Wire the On/Off switch so that it also activates (via a relay) an air 
compressor when turned on. Feed the output of the compressor to a horn from 
a diesel locomotive (http://www.trainweb.org/mdamtrak199/PImages_000a.htm) 
mounted to the rear wall of your radio room. If the horn is still sounding 
when you finish your QRP operating, you left the speaker switch on.

John Harper AE5X
http://www.ae5x.com