Lrl from Italy

[FrancoItaly]

I repeat, you must try. For the moment I cannot make experiments.

[taxma1981]

Thanks franko

[liudengyuand]

fran……You don't do any test, how do you know the LRL is useful? You listen to other people say?

[FrancoItaly]

Hi All,

I do not remember if I said on the forum that is useful to shield the entire lrl (handle included) with aluminum foil attached to the ground of the entire circuit (negative supply). A member of the forum pointed out to me that holding the LRL with both hands the signal increases in intensity and I confirm that I had also noticed this.

Best Regards

[liudengyuand]

So why not use the metal case directly?

[FrancoItaly]

It's another possibility, for me it is more easy to build the box and the handle with plastic material.

[mokkethon80]

i hope succes guy..😊

[liudengyuand]

I don't think 358 adjustment is very convenient, in the circuit needs to be improved

[liudengyuand]

In the first few pages of BBS, useful 4046 production of the machine, it is what principle? Effect is better than with 8 m crystals? Who knows?

[FrancoItaly]

The performances are equal, with the 4046 version are measured the phase differences while with the version 8MHz quartz are measured the variations of amplitude. My initial idea was to compare the phase changes with the amplitude variations in order do get some discrimination but I have not found anything useful.

[liudengyuand]

How to measure the oscillation frequency of L1 and C10? I have no way to measure with the oscilloscope, how can we know that the oscillation frequency? Whether it needs to work in the resonant state. We need to further understand its principles

[FrancoItaly]

There is no need to know the resonance frequency, it can be calculated theoretically.

[liudengyuand]

Only forever if you don't know the resonant frequency, then make the adjustment, there is another important issue, we need to an effective signal, and a similar metal signal device to test the sensitivity of the machine, such as mobile phones, or radiation signal switch power supply, so what kind of signal is best for the test

[FrancoItaly]

The only effective test is to try in a test field with buried metal at least a few months.

[liudengyuand]

Bury the metal is many, many months, there are many life rubbish will be buried in the ground, the key is we want to know what metal is the signal, the BBS from 2013 to now, not a few people make success,