Where do you get antennas like the one you use for finding noise?

Sent from my iPhone this time 

> On Nov 1, 2014, at 7:16 PM, Dale Parfitt <[email protected]> wrote:
> 
> 
> Over the past few days I started to hear a random popcorn popping type noise 
> on 160, MW and lower. I had never heard a noise like this one.
> I couldn't think of anything new around the house- and having no close in 
> neighbors I was stumped.
> Interestingly, the only NB that 100% eliminated it was my bedside TenTec 
> RX-325. But I digress.
> I took my KX-3 with a 24" whip on the BNC connector. AM mode  on 160M and 
> headphones. After  eliminating any sources on the upper foors, I narrowed the 
> search to my shop/lab. . More checking and I found a brand new LiPO charger 
> that came with my new LED flashlight. I had forgotten I had even plugged it 
> in. When the whip got close, the  sound was deafening.
> The moral is- don't forget what's new in  the house and the KX-3 makes a 
> wonderful noise source detection tool.
> 
> Dale W4OP 
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