Lrl from Italy

[FrancoItaly]

Hi detectoman,
Every frequency in the range 3 -10Mhz works well, I think it's ok also 10.1 or 10.2Mhz or similar, I have not noticed any changes. It would be interesting to try with a harmonica to 59Khz (frequency gold?) For example 59Khz X 100 = 5.9Mhz.
Regards

[FrancoItaly]

To test it would be better to use a LC oscillator and not a quartz, but at this moment I cannot try.

[Astrodetect]

Hello franko
As I see your last 8MHZ Sensor LRL, you use the same principle as Mineoro DCH85 but you have connected directly the oscillator to the input of Receiver. This is the same as DCH which instead of connecting directly to the receiver, the oscillator uses a coil behind the antenna of the receiver.Same thing i think.What do you think?

[FrancoItaly]

As I said in my LRL oscillator only it serves to generate a reference signal and the phenomenon modulates this signal. The signal is not transmitted in the environment, but I do not know well mineoro lrls. My lrl derives from a RF sniffer that accidentally came in oscillation at about 4Mhz.

[FrancoItaly]

I decided to change my LRL and run at 59Khz (gold frequency) but at the time I am away from home and I can not test it. In practice it is a species of regenerative receiver, but the oscillation is continuous, even without signal at the input. To achieve this a part of the signal, using 4.7K trimmer and 100pF capacitor, it is send to the coil. For the coil we may use about 100 turns and we have to choose the right value for the capacitor placed in parallel to the coil. The emitter capacitors of the second and third transistor they set the stage gain of each transistor and the value must be determined experimentally. I repeat that I have not made this change, and I hope that some of you have wanted to do it.
Best Regards

[tanrila]

thanks

thanks master franco with best regard for you

[FrancoItaly]

Hi detectoman,
I can not send you a private message:
"detectoman has exceeded their stored private messages quota and cannot accept further messages until they clear some space."
Regards

[detectoman]

jjaja ok franco, i see fix these, regards

[brs]

franco help me

hi franco
VU meters using
I want to be linked to lrl quartz version
Where you can connect and link IC1A , IC1B , IC2A or IC2B

[brs]

TR1 5V
TR2 0V
TR3 1,1V
TR4 1,2V
TR5 4,57V
PIN 1 IC1 0, 800V and
Increases with voltage lighting gradually
---------------------
PIN 7 IC1 10.58V
And IC2 10.63V
With the lighting voltage is reduced without gradually to 1v

[FrancoItaly]

First unplug the oscillator disconneecting C2, the voltage of TR2-TR3-TR4 collectors have to be in the range 3 - 5V, to increase the collector voltage should increase the resistance between collector and base and vice versa.
For TR5 emitter 4.57V is ok. You can connect the VU meter at PIN 1 of IC1 with the calculated resistance suitable for 11 volt full scale. IC2 is not necessary and you can use IC1B for buzzer.
Regards

[brs]

thank you Mr franco

[brs]

hi franco
bc183c Alternative bc550c

[FrancoItaly]

Yes it's ok

[darkman]

new sensor

any Professional one here try any thing with new sensor stage ?