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Old 11-02-2011, 07:18 PM
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Quote:
Originally Posted by Aziz View Post
A lot of LRL believers have lost their credibility. And they have deserved the right asz kick. No matter what you think. There is some point arrived, to stop them.

Eat this:
I do not have any pity with scammers, frauds, liars, b$ & pseudo science spreaders....

Comeon, tell us:
how it works and what are you measuring?

Aziz
it's intended to be a clean and polite technical thread... lets them say about PD schematic and LRL theories, no jokes please

I think Morgan's answers are an answer about what they measure and how it "works":
they measure incoming rf waves, probably from a distant transmitter e.g. time signal one operating in the LF band

the ferrite we know is directive and ferrite coils have a minimum reception when aligned as in the PD, so they look for minimal coupling with far transmitter I think

till that is simple rf stuff... no big stuff about electronics

how it works ? uhm... maybe it's supposed that the target introduce some magnetic anomaly and let receiver detect alterated signal e.g. amplitude, I'm not sure, but they use AM demodulation and filter, so it's easy think it's an amplitude issue there... not FM stuff or anything else otherwise circuit will be much different; then a beeper signals the "anomaly" if any...

it works ? I don't know, have many dubts about... remainds me much the goldgun al718 , a simple rf receiver for vlf range, with dual ferrite and opposite windings but too many here reported that goldgun doesn't work as LRL...

but maybe all is at tuning and choosing the right transmitter, or maybe it doesn't rely in a specific transmitter but on background rf noise in that frequency range... who knows... even the goldgun is somehow "broadband" thing, intentionally not selective receiver...

regards
Max
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