Re: [Elecraft] Fwd: OT Mystery QRM Help (Video)

2016-01-24 Thread Bob McGraw K4TAX
Usually electrical noise is very broad band in nature. I use the MFJ unit to find the general direction, triangulate to an area, and then using a 24" reflector type microphone, equipped with a high gain audio amp and headphones, go "listening to poles". {Yea the neighbors think I'm crazy,

Re: [Elecraft] Fwd: OT Mystery QRM Help (Video)

2016-01-23 Thread Bob McGraw K4TAX
If one is serious about finding noise, I've found this item to go a long way in identifying down to the building or site from which it originates. It takes a bit of practice and time to triangulate but does work well. I'm sure there's other equipment and methods available as well.

[Elecraft] Fwd: OT Mystery QRM Help (Video)

2016-01-23 Thread David Ahrendts
A bit more: I watched this mystery QRM pretty closely for an hour Friday evening as 20 meters closed for the day (by 6:30pm PST). The cadence of this noise changed. It slowed. Then faded away with the band. I’m scratching my brain to try think of a mechanical device that would create that kind

Re: [Elecraft] Fwd: OT Mystery QRM Help (Video)

2016-01-23 Thread ac5p
Yes, but David says, "only occurs on 20M", so this may not hear it at 135MHz?   Need portable like KX3 and small mag loop tuned to 20M. On Saturday, January 23, 2016 2:14 PM, Bob McGraw K4TAX wrote: If one is serious about finding noise, I've found this item to go