[Elecraft] Weird Ticking QRM

[Bob K6UJ]

Jim,

I discovered the same thing from my Makita battery drill charger in the garage.   As you, I was very happy to discover this 
annoying noise maker.

Bob
K6UJ



On May 15, 2012, at 7:07 AM, Jim Sheldon wrote:

> Shortly after loading the latest version (4.51) I was occasionally getting a continuous tick-tick-tick signal on the higher bands that was very annoying.  It also showed on the P3 as a very low amplitude, approximately 2 per second swept line (on the waterfall).   It disappeared with the antenna disconnected.  Thinking it was my new laptop, I shut that off to no avail.  This had been going on for several days now, and I was almost ready to tear what's left of my hair out.  The power company had installed one of those new "smart" radio controlled meters on a neighbor's house (I refuse to let them change mine out) and I suspected that too, but this morning I FINALLY found it!  Turns out that 4.51 firmware was not the problem at all!
> 
> I have a Black & Decker 18 volt battery drill that I use almost every day for some sort of project and I have been working on installing a new Yaesu 7900 2/440 rig in the wife's car.  I had the spare battery sitting on the rapid charger and it appears the charger is one of those "pulse" types.  Just a few minutes ago, it all of a sudden dawned on me to remove the battery from the charge slot and instantly the ticking noise disappeared!  
> 
> Just goes to show you that sometimes it's the simplest things that create the most complex problems - ;)  Boy, I won't ever forget THAT noise source!
> 
> Jim - W0EB
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