basically i was following the circuit given at http://www.users.bigpond.com/cool386/tda7000/tda7000.html
under topic The Silicon Chip November 92 TDA7000 receiver
however , i cant find any inductor in any shop nearby . Anyone knows how to coil a copper wire to make inductor for tat circuit ?
And i brought a fm antenna . i jus nid to put a jumper wire at the connector of antenna and that will do ?

Thanks alot ~

 

Hello,

Here is a websites with a desciption how to make air-coils for RF circuits.
http://info.ee.surrey.ac.uk/Workshop/advice/coils/air_coils.html
http://hem.passagen.se/communication/aircoil.htm

Here is another website with a TDA7000 design.
http://w1.859.telia.com/~u85920178/rx/tda7000.htm

I also attached the datasheets an application notes of the TDA7000.

Greetings,
Bertus

 

i now following the schematic given in TDA 7000 AN192 .
Try to make my own air coil of 56nH and 130nH by this week
Thank you

 

In wat way i can measure the value of inductance of air coil after i make it ?
(if i don have the instrument to measure inductor directly)