Lrl from Italy

[LRLMAN]

COPER BAR

I CAN NOT UP LOAD AN IMAGE SOMEONE COULD HELP ME ??

[FrancoItaly]

As I said 8 m are a good distance that proof that the LRL works well. You can increase the DC gain of the amplifier, by changing R1 from 150K to 56K, R2 from 220K to 470K and changing the value of the voltage divider R3 / R4 / R5 / R6, try R3 = 15K, R4 = R5 = 3.3K, R6 = 4.7K or R3 = 18K, R4 = R5 = 2.2K, R6 = 4.7K. In this way, the LEDs (2 and 3) are switched on with a lower voltage.

Best Regards

[sakher]

water!

Hello Mr. Franco

Through my experiences I think this device is sensitive to stream of water
But I did not dig to make sure
what do you think?

[FrancoItaly]

It never happened, but it could happen if the stream has a particular orientation with respect to the axis north / south.

[ayoni03]

8 mhz sensor stage and pic16f876

hi Franco

What's your idea...

[ayoni03]

rar

try

[FrancoItaly]

Good job, in the past I have used a PIC for this purpose, can not remember the type but it had 18 pins. However for this purpose it is also sufficient a LM3914 that can operate as bar or dot

Best Regards

[abdou2014]

Qestion to Franco

I tested your lrl ( C13 / 10 nF ) ( very sensitive to static and magnetic and sky effect ) with a High Frequency Generator ,
Trying different antenna the reception frequency does not change (77-80 Mhz)
is it normal , I want to increase it to 100 Mhz, how to do ???

[abdou2014]

do you Think with replacing the quartz with 10 mhz we'll receive 100mhz ???

[FrancoItaly]

My lrl works well (in my country) with various quartzs : 3 - 4 - 6 - 8 and 10 Mhz. you may try 10 Mhz but I think that there is no apparent link between the frequency of the quartz and frequency determined by L1 / C10.

Best Regards

[dream_man]

Hello dear Franco;
Hope you are well and your face is smiley. I found that this system would turn on its LED1 just near a wastewater hole or sewage hole. As I understood, at these types of places, there are some sort of gases like Hydrogen sulfide and some Ions like Ammonium Ion.

[zakari]

hi all


hi all iranian members

happy new year


best regards

[FrancoItaly]

The lrls are devices with high gain and therefore easily influenced by any source of electromagnetic disturbance, it would be better to do the tests away from any disorder.

Best Redards

[LRLMAN]

COPER BAR

I still can not upload images............................................ .........

[afshin]

Hi mr franco
I remember that you said this lrl early was a rf sniffer that you changed to the lrl.for what range of frequency the rf sniffer was be made to work?
Thanks