hi, can somebody tell, about this circuits, where is product detector, like for example ratio detector?

 

it is not shown (at least not in detail). check "diplexer" circuit, diode ring mixer.
everything before it is RF, everything after is AF (audio freq.)

 

it is not shown (at least not in detail). check "diplexer" circuit, diode ring mixer.
everything before it is RF, everything after is AF (audio freq.)

Goodmorning, thnx for reply, i realy dont understand, because i want to make it, but after when i look, detector i cant see nowhere, i say what is this, i take from this site http://www.tuberadio.com/new.html only is show VCO and BFO more, and also he say , "The mixer/detector can be SBL-1 or TUF-1 types or homebrew" is this sbl-1 also detector?

 

Hello,

A SBL-1 is a double balanced mixer.

Bertus

 

You should google product detector and read several articles. A product detector is a special rf mixer. A mixer is different than a summer. It outputs the sum and difference of the input frequencies. A product detector is special because the inputs are the same frequencies.

What component has the same input frequencies?

 

Hello,

A SBL-1 is a double balanced mixer.

Bertus

Hi, thnx Bartus now i know, what is sbl-1

 

You should google product detector and read several articles. A product detector is a special rf mixer. A mixer is different than a summer. It outputs the sum and difference of the input frequencies. A product detector is special because the inputs are the same frequencies.

What component has the same input frequencies?

 

You should google product detector and read several articles. A product detector is a special rf mixer. A mixer is different than a summer. It outputs the sum and difference of the input frequencies. A product detector is special because the inputs are the same frequencies.

What component has the same input frequencies?

Hi, i dont know man, i try to search in google " A product detector is a special rf mixer", i dont understand there 4 methods detectors, but i never hear about special rf mixer, i dont understand,
is possible to tell me where is, in that circuits special rf mixer thnx they say to use sbl-1 mixer(is this one)

 

Hello please can somebody explain me, because i just whait the answer and i want to build it, Pleaseeee

 

Hello,

Hello please can somebody explain me, because i just whait the answer and i want to build it, Pleaseeee

Please be patient, this is an international forum, so answers can take upto 24 hours.

Read this wiki page:
https://en.wikipedia.org/wiki/Product_detector

As for the availability of the SBL-1 mixer, it can be obtained here:
https://www.box73.de/product_info.php?products_id=3077

Bertus

 

Hello,



Please be patient, this is an international forum, so answers can take upto 24 hours.

Read this wiki page:
https://en.wikipedia.org/wiki/Product_detector

As for the availability of the SBL-1 mixer, it can be obtained here:
https://www.box73.de/product_info.php?products_id=3077

Bertus

Hi, Bertus, is this ring modulation diode, how is deomulated the circuit

 

You can build and use the radio long before you may understand it. Lots....lots of study will be needed before you understand it. That's why there are large text books to study.

If we explained it to you.......would you understand the words we use? You need to study definitions and concepts in an ordered manner. One particular concept is needed to be able to understand the next concept.

Unfortunately......we can not see voltage, or current flow. So we have to study.

 

You can build and use the radio long before you may understand it. Lots....lots of study will be needed before you understand it. That's why there are large text books to study.

If we explained it to you.......would you understand the words we use? You need to study definitions and concepts in an ordered manner. One particular concept is needed to be able to understand the next concept.

Unfortunately......we can not see voltage, or current flow. So we have to study.

I study man ,, can you please just tell me with a (little words, how is working), if you know, i search a lot in internet but without success, my plan was to make with foster seeley, detector because i understand, but after i found this circuits and i will like to make it, but like i said, i dont understand the detector....

 

Your post is confusing to me now. What are you trying to do?

What type of signal are you working with? Have you heard many FM signals on 40 meters?

 

Hi, Bertus, is this ring modulation diode, how is deomulated the circuit

A Ring Modulator is for a Ssb transmitter, where you only transmit a carrier when you speak, or send audio, this reduces the power requirements of the rf amplifier ,and reduces the bandwidth of the signal.

The output of the Ring Modulator has two products, the Sum and the Difference of the two frequencies being converted, these are the Upper and Lower sidebands, only one sideband is transmitted , so in theory two signals can occupy the same frequency and won't interfere with each other.

In the receiver the same circuit is used and an oscillator called a BFO is used to reproduce the original Audio signal.

You need to search and study SSB radio receiver circuits further.

 

Your post is confusing to me now. What are you trying to do?

What type of signal are you working with? Have you heard many FM signals on 40 meters?

Goodmorning, with fm signals, i dont know because i did not make it, like i told i was in plan somehing else to do, but this is all explained,only the product/detector not

 

A Ring Modulator is for a Ssb transmitter, where you only transmit a carrier when you speak, or send audio, this reduces the power requirements of the rf amplifier ,and reduces the bandwidth of the signal.

The output of the Ring Modulator has two products, the Sum and the Difference of the two frequencies being converted, these are the Upper and Lower sidebands, only one sideband is transmitted , so in theory two signals can occupy the same frequency and won't interfere with each other.

In the receiver the same circuit is used and an oscillator called a BFO is used to reproduce the original Audio signal.

You need to search and study SSB radio receiver circuits further.

Goodmorning i search yesterday i google, i know about bfo(beat frequency oscilator), but i will try also today to search ...thnx

 

Sorry....I can not understand what you are saying.

 

Hello,

If you want to read more about mixers, read the attached PDF's.

Bertus

 

Sorry....I can not understand what you are saying.

i say, i did not make the radio, this fm superhetero, but this have another detector,
and just now, i am reading one book, and in the book say, that mixer is product/detector, where is two input and one output, if output audio frequency, is this correct?