fm generator 10.7

[papele]

Good evening everyone, I'm happy to be with you. I'm an electronics student and I repair a little bit of everything. I have a transistor FM radio from the 60s and I should calibrate the FM medium frequency with a simple oscillator at 10.7 Mhz. I'm looking for a wiring diagram. Will you give me a hand? Thank you. THE

 

[bertus]

Hello,

You could use a ceramic filter to create the 10.7 MHz oscillator:


This schematic was found on this pege:

Amateur radio technical experiments

oscillator topics

www.agder.net

Bertus

 

[Delta Prime]

The circuit was originally used for testingof I F amplifiers and demodulators. It was taking from a post on this site.
Good stuff.



This schematic was found locally.

https://maker.pro/forums/threads/10-7-mhz-oscillator-with-transistor.291486/post-1788466

 

[papele]

Hello,

You could use a ceramic filter to create the 10.7 MHz oscillator:
View attachment 58122

This schematic was found on this pege:

Amateur radio technical experiments

oscillator topics

www.agder.net

Bertus

Can I modulate with external signal?c1? Thank you.

 

[papele]

I have difficulty building coil on 10.7 mhz. how should it be done?

 

[bertus]

Hello,

Have a look at the following page:

https://www.elektormagazine.com/magazine/elektor-197602/57586

Bertus