ALONSO PD MISSION ACCOMPLISHED V1,V2

[brain]

I'm trying to figure out why. I partially understand that we are evaluating the electrical value of the electromagnetic field. I am looking for another solution as it is not the tda7000.

[abdou2014]

but you need a good display to catch the small variation

[brain]

What is a display?

[abdou2014]

audio meter

[brain]

I will deal with the microcontroller, I need important points.
with a 125khz frequency microcontroller for Tx I did . Important points are required for Rx.

[humhum]

Originally Posted by brain

hello humhum
What is the fm receiver frequency.?
Are you using 80mhz or 110mhz?
What is the IF frequency? Is it possible to write them.

I can't measure my setting FM receiving frequency , because it is very power low signal ,
, IF of some FM receiver is 10.7 Mhz , IF of AM receiver is 455Khz , This is after
mixing of input and local OSC , but TDA7000 not use 10.7Mhz , only few Khz .

about IF see this link :

https://www.analogictips.com/radio-r...-trf-superhet/
https://www.analogictips.com/radio-r...rt-2-zero-sdr/

[abdou2014]

I finished my new TDA system, very sensitive for the electric field,detect a laptop at 4 meters, an antenna cable at 1.5 meters, a problem with the buzzer, the sound very weak ,

[abdou2014]

sound problem solved I think a colpitt oscillator is better than the NE555

[Geo]

For audio signals i believe that 555 is the best choise

[abdou2014]

Thank you Geo

[brain]

hello geo the subject i am talking about!


https://www.youtube.com/watch?v=zq8yH_CRuDg


What is the frequency at the transmitter location when the receiver is 80 mhz. I want to design this tx frequency as a transmitter.

[brain]

I found the frequency tx. We add a difference frequency of 10.7 mhz to the receiver frequency.

oscilator local 98.7-118.7 Mhz

antenna signal 88-108 Mhz

[humhum]

Originally Posted by brain

I found the frequency tx. We add a difference frequency of 10.7 mhz to the receiver frequency.

oscilator local 98.7-118.7 Mhz

antenna signal 88-108 Mhz

This 10.7Mhz is IF in FM receiver , 455Khz is IF for MW Radio . But in TDA7000 not is so !

[brain]

Originally Posted by humhum

This 10.7Mhz is IF in FM receiver , 455Khz is IF for MW Radio . But in TDA7000 not is so !

I guess you don't understand the subject.
I asked you about the tx frequency. The local oscillator acts as a transmitter around 10-15 meters.

[humhum]

Originally Posted by brain

I guess you don't understand the subject.
I asked you about the tx frequency. The local oscillator acts as a transmitter around 10-15 meters.

''The local oscillator acts as a transmitter around 10-15 meters''
Yes correct , Local Oscillator also time in all Radios is a mW transmitter .

'' I asked you about the tx frequency ''
The Tx Frequency or also time this is Local OSC freq . in FM radio is so :

This is two kind or type : With Positive or Negative local osc .

1) If you need to hear station in 88Mhz , input rec freq to Radio will be 88 Mhz and local
osc need to be 77.3Mhz ( input freq 88 Mhz - 77.3 Mhz local OSC = 10.7 Mhz need for IF )
also have other method and this is with so :
for 88 Mhz station ( 98.7 Mhz local osc - 88Mhz input freq = also is 10.7 Mhz for IF ) .

[brain]

Originally Posted by humhum

''The local oscillator acts as a transmitter around 10-15 meters''
Yes correct , Local Oscillator also time in all Radios is a mW transmitter .

'' I asked you about the tx frequency ''
The Tx Frequency or also time this is Local OSC freq . in FM radio is so :

This is two kind or type : With Positive or Negative local osc .

1) If you need to hear station in 88Mhz , input rec freq to Radio will be 88 Mhz and local
osc need to be 77.3Mhz ( input freq 88 Mhz - 77.3 Mhz local OSC = 10.7 Mhz need for IF )
also have other method and this is with so :
for 88 Mhz station ( 98.7 Mhz local osc - 88Mhz input freq = also is 10.7 Mhz for IF ) .

My aim is not to discuss FM radio. I am investigating whether this transmitter frequency has an effect on the phenomenon or not.

[humhum]

Originally Posted by brain

My aim is not to discuss FM radio. I am investigating whether this transmitter frequency has an effect on the phenomenon or not.

You ask about catch frequency of the phenomenon , this frequency can't measuring or is
impossible for today with classical methods .
But for working system need many experiment with circuits and calibration of correct FM receiver Frequency .

[folharin]

someone in possession of the original dch would be able to easily measure the frequency of the stimulating coil through a frequency meter ... the tda 7000 is a simple fm receiver. car parts with usb. that turns on the car's cigarette lighter.

[folharin]

would find the tuned frequency

[humhum]

Yes , with measuring can see Gen. Frequency value of Stimulator , but Frequency of
Phenomenon , .

[folharin]

mister hum hum! there is a minority in this forum that is in a private group!!!it started in the time of alonso pd..i thought you were participating in the secret forum. we were left out ... unfortunately....

[humhum]

Originally Posted by folharin

mister hum hum! there is a minority in this forum that is in a private group!!!it started in the time of alonso pd..i thought you were participating in the secret forum. we were left out ... unfortunately....

'' I thought you were participating in the secret forum. we were left out ... unfortunately.... ''

I have never participated to the secret forum . Maybe in the secret forum have few
members from we forum , I not understand .

[folharin]

unfortunately sir hum hum!!!

[LRLMAN]

Originally Posted by humhum

You ask about catch frequency of the phenomenon , this frequency can't measuring or is
impossible for today with classical methods .
But for working system need many experiment with circuits and calibration of correct FM receiver Frequency .

Hi Hum Hum nice to greet you again........I also want to ask you the same question that friend Brain asked to you: what do you know about the impact frequency of an X oscillator has any repercussion on the phenomenon or is it only to stimulate and increase the sensitivity of a receiving antenna to be able to capture the phenomenon? ??

Receive many greetings from Mexico.

Lrlman

[humhum]

Originally Posted by LRLMAN

Hi Hum Hum nice to greet you again........I also want to ask you the same question that friend Brain asked to you: what do you know about the impact frequency of an X oscillator has any repercussion on the phenomenon or is it only to stimulate and increase the sensitivity of a receiving antenna to be able to capture the phenomenon? ??

Receive many greetings from Mexico.

Lrlman

Hi dear LRL , my think is that Phenomenon is Photons in Thz Band with small pozitive and
big Negative level energy ( I see this wave in Output of my Mineoro ) , this energy can
modulated itself over many Wave : Hz , Khz ,Mhz ,. Thz .

About X osc , You maybe ask me for correct finding frequency , if is so , this is impact frequency of Gold Resonance ( Mhz Band ) and Esteban use it for Rx near 100Mhz
(Gold Resonance x2 or X3 ) this maybe is from Scalar wave , but this Rx frequency is
(small) different for all Country. Need experiment .