Quote:
Originally Posted by Dubulumach
Hello FrancoItaly
Your LRLs work but suffer from so called "Albedo problem". What is it ?
When you enter in range of Halo-effect field with telesopic antenna you have already disturbed the field. Your antenna need extreme loosy coupling with ambient, to be at maximum sensitivityy not disturbing the field. Use capacitive coupling between two very small capacitors or two very small inductors at the end of your antenna. Also good high impendance RC filter is needed to reject iron targets or selective LC filters, each tuned for specific color metal.
Best Regards
Dubulumach.
|
Hi Dubulumach,
I have experience only on land in Italy and Switzerland (near Italy), also a member of the forum that lives in central america confirms the same thing, that is my lrl (but I think all the others) are insensitive to iron, I believe that iron does not emit the phenomenon. Certainly if the gain is too high the compass effect appears and also many other disturbances of which I do not know the origin. I can think of small metal fragments (non-ferrous) or radio transmitters whose fundamental frequency or harmonic (lower or upper) falls within the range of L1 / C10.
As a general rule if the disturbance remains constant while walking it is the compass effect or some electromagnetic disturbance, while if it disappears after a few meters it is almost certainly a small piece of metal that maybe the MD can not reveal:
Best Regards