I have not been in university for many years so my research materials are out of date, then I increased my knowledge about modern parts myself. Michael is older (born 1978?) than most students so he is not in university.
Is there a member here that has recently studied radio circuits in university who can recommend new and correct research material?
Looking at "tutorials" in Google brings many old and incorrect ones as Michael has discovered.

I try, i can buy a chip fm, i wil built, but what you will learn

 

The Radio Amateurs Handbook might be a good place to start.

i read, but for begginer is a little bit difficult...

 

https://www.qsl.net/va3iul/RF Mixers/RF_Mixers.pdf

Attached as well.

Regards, Dana.

Thank you Dana very good tutorial...

 

Hello,

On the internet archive there are books and articles from the ARRL (american) and RSGB (british) available:
https://archive.org/search.php?query=electronics arrl&and[]=loans__status__status:"NULL"&and[]=mediatype:"texts"
https://archive.org/search.php?query=electronics rsgb&and[]=mediatype:"texts"

Those will have a lot of info for you.

Bertus

Thank you Bertus....