Lrl from Italy

[FrancoItaly]

I think the phenomenon extends from radio waves (long, medium and high) to infrared and ultraviolet. The radar presupposes a single antenna and a delay in the reflected signal, I think that adding a transmitter for example in the FM band increases the sensitivity of the TR2 mixer, but in this way makes it difficult to calibrate. I obtained a good sensitivity using a 20Mhz quartz and tuning the L1/C10 filter on a 20Mhz harmonic. for example 100Mhz (20 X 5) or 120Mhz (20 X 6). Unfortunately the tuning is very critical, out of 3 specimens only one works, the calibration with 8Mhz is already complicated but there is no problem of the harmonics, unfortunately however the 8Mhz harmonics have a level too low to be used.

[aft_72005]

I think the phenomenon extends from radio waves (long, medium and high) to infrared and ultraviolet. The radar presupposes a single antenna and a delay in the reflected signal, I think that adding a transmitter for example in the FM band increases the sensitivity of the TR2 mixer, but in this way makes it difficult to calibrate. I obtained a good sensitivity using a 20Mhz quartz and tuning the L1/C10 filter on a 20Mhz harmonic. for example 100Mhz (20 X 5) or 120Mhz (20 X 6). Unfortunately the tuning is very critical, out of 3 specimens only one works, the calibration with 8Mhz is already complicated but there is no problem of the harmonics, unfortunately however the 8Mhz harmonics have a level too low to be used.

Thank you.. I will investigate further and let you know the result.

[Kazem]

Hello Mr. Franco
I hope you are always happy and healthy.
In places where the height change is noticeable. There are many differences in the boundary of the polar effect. If it was not enough to adjust the sensitivity or control the gain of the potentiometer p2; By changing what parts you can reach the polar border.
Thank you for your efforts

[Kazem]

I mean by changing which part of the circuit

[FrancoItaly]

Unfortunately I am not very healthy so I can't answer you, I can only tell you that the compass effect occurs when there is too much amplification, so follow the calibration instructions (helps.txt).

[Kazem]

thank you I ask God to be healthy.

[Zicos]

H

Happy new year with health to everyone.

[Geo]

Unfortunately I am not very healthy so I can't answer you, I can only tell you that the compass effect occurs when there is too much amplification, so follow the calibration instructions (helps.txt).

Ohhh i just read it.
My best wishes for full health

[FrancoItaly]

Thanks Geo, if I remember correctly there are 10 years of difference between us, I was born in 1951, do you have any news of Esteban?

[Geo]

Hahaha... not exactly but near there... i have born on 1960 .
I have n't news from Esteban since last year.

[Afg]

Thanks Geo, if I remember correctly there are 10 years of difference between us, I was born in 1951, do you have any news of Esteban?

Hello Mr. Franco If we want to increase the frequency of the 3-LED circuit to a few kilohertz, what changes should be made? And if we add an infrared receiver next to the antenna, will the circuit change completely?

[FrancoItaly]

The sensor stage operates only in the 2/20 Mz range. If we add an IR receiver the circuit changes, it becomes another lrl.

[Afg]

The sensor stage operates only in the 2/20 Mz range. If we add an IR receiver the circuit changes, it becomes another lrl.

Hello Mr. Franco, I hope you are well. Thank you for your answer My three-LED circuit, when I touch the antenna, the LED turns off. When I add an ir receiver, I touch the antenna, and the LED turns on... What changes should I make to lower the frequency?

[FrancoItaly]

Years ago I tried to use the 56 Khz frequency without success, but as I said before it only works in the 2/20 Mhz range because the L1/C10 frequency is the important one. I can't help you with this change.

[Pahom]

Happy Birthday to YOU Franco!!!!!!! I wish you good health and long life!!!!!!!