variable capacitor (how to use)

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airra mae basas 1

Joined Jul 24, 2017
21
I'm using a variable capacitor for my AM/FM receiver but it cant receive , i assume that the problem is the var. capacitor.

it is same as this


can some one help me?

what is the purpose of letter D?

thanks (beginner heheh)
 

AlbertHall

Joined Jun 4, 2014
8,514
It might be arranged as below but there's no telling the AM side from the FM side without data. D is probably an earth connection for the shaft to eliminate 'hand effect' - a hand being near changing the tuning.
 

Colin55

Joined Aug 27, 2015
519
There is a big difference between AM and FM
Look inside the tuning capacitor. The FM has only a few moving vanes. The AM has lots more.
 
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