DizzyDigger
Gold Member
- Dec 9, 2012
- 5,817
- 11,537
- Detector(s) used
- Nokta FoRs Gold, a Gold Cube, 2 Keene Sluices and Lord only knows how many pans....not to mention a load of other gear my wife still doesn't know about!
- Primary Interest:
- Prospecting
Took the FoRs Gold out again yesterday for some coin shooting at
our city park, and again blamed the constant chattering (EMI) on the
local power lines that were about 50 yds. away. Still, it's getting annoying.
This afternoon I drove a few miles back in the hills just to check if the
unit was chattering there too. It was, and there was not a source for EMI
within miles from the location.
Maybe I'm just nuts, and this is how the unit is supposed to sound, but
I do have my doubts. Spent many years in the world of EMC (Electro-magnetic
Compatibility) and know quite well what EMI sounds like.
Needed to have someone else with some knowledge of detectors take
a listen to it, just to make sure I'm not off-base. Made a quick video,
and while the video portion isn't great, the audio is what it's all about.
Do me a favor, if ya would, and listen to the machine. Is this typical
of a FoRs Gold?
Should add here that EMI does not always come from an external source,
although that is common. Other common sources for EMI are internal, relating
to circuit board design, or conducted, meaning the EMI follows a cable or loose
wire in the control box (acting as an antenna), and carrying the interference
into the electronics.
our city park, and again blamed the constant chattering (EMI) on the
local power lines that were about 50 yds. away. Still, it's getting annoying.
This afternoon I drove a few miles back in the hills just to check if the
unit was chattering there too. It was, and there was not a source for EMI
within miles from the location.
Maybe I'm just nuts, and this is how the unit is supposed to sound, but
I do have my doubts. Spent many years in the world of EMC (Electro-magnetic
Compatibility) and know quite well what EMI sounds like.
Needed to have someone else with some knowledge of detectors take
a listen to it, just to make sure I'm not off-base. Made a quick video,
and while the video portion isn't great, the audio is what it's all about.
Do me a favor, if ya would, and listen to the machine. Is this typical
of a FoRs Gold?
Should add here that EMI does not always come from an external source,
although that is common. Other common sources for EMI are internal, relating
to circuit board design, or conducted, meaning the EMI follows a cable or loose
wire in the control box (acting as an antenna), and carrying the interference
into the electronics.
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