schematics no one can help!!

[mohsen_deeb]

lo2398

I am refreshing my request, I want anyone to help me finding the schematic circuit of the Tv tuner or LNB or spectrum analyser.
Thanks.

 

[klug]

uv916-tuner

Hi mohsen_deeb!

Why do not you try some search engine?

It may be useful for you:

45-860MHz Radio receiver based on UV916-tuner:

http://hem.passagen.se/communication/uv916rec.html

Scheme of TUNER2536(Sony) :

http://sasoft.qrz.ru/___/radio/shemy/tv/ussr/uzly/ptk/tuner2536.djv

There you also will find chemes of russian tv tuners:

http://sasoft.qrz.ru/___/start/uzl_ussr.htm

Take links with ptk* skm* skv* skd* files. They are on first 3 parts of page. They are in djvu format, you will need IE plugin to view them. Sorry, I have not seen them.

Try to look at datasheet of CXA3025N - All band TV tuner ic. There is scheme of tv converter in this pdf.

**broken link removed**

Here you will find information about mmds converter modification by HAM LU7DSU:

http://www.qsl.net/lu7dsu/mmdsconv.html

And by G0ORY :

http://www.qsl.net/g0ory/2.3g/lo2398/lo2398.html

Look also to this page "Homebrew RF Test Equipment and Software":

http://www.qsl.net/n9zia/wireless/appendixF.html

Best Wishes & 73! Klug.