Fm Radio - Electronic Circuits Projects Diagrams Free

earjun · 21st January 2007, 11:38 AM

Some one please help me with making an fm radio please

baftab · 21st January 2007, 12:33 PM

what kind of help?
be more specific

audioguru · 21st January 2007, 02:18 PM

Another request for "a super-regen" piece of crap.
Or an old TDA7000 piece of crap.

The Dollar store sells a "scanning" FM radio for $1.00. It is a piece of crap with the newest version of the TDA7000 IC inside. Its earphones are worth more than the entire circuit.

bananasiong · 21st January 2007, 03:13 PM

http://www.electro-tech-online.com/e...-receiver.html
try this?
it works with my fm transmitter... or i can receive 2 stations only...

**Nigel Goodwin** · 21st January 2007, 03:16 PM

Quote:

Originally Posted by bananasiong

http://www.electro-tech-online.com/e...-receiver.html
try this?
it works with my fm transmitter... or i can receive 2 stations only...

Or not?, it must rate as the most horrible 'receiver' (I use the term VERY loosely) ever!.

audioguru · 21st January 2007, 03:19 PM

Connect two wires to a banana then stick it in your mouth. It will pickup 10 FM stations and you will hear them in surround sound!

bananasiong · 21st January 2007, 04:01 PM

Quote:

Originally Posted by audioguru

Connect two wires to a banana then stick it in your mouth. It will pickup 10 FM stations and you will hear them in surround sound!

LOL.. hahahaha
use a satellite dish connected to a banana for receiving signal from the other side of the earth? or from mars!?!?

audioguru · 21st January 2007, 07:16 PM

The rovers that NASA sent to Mars more than 3 years ago are still running around there:
http://marsrovers.nasa.gov/home/

earjun · 24th January 2007, 08:49 AM

Guys you are getting very funny here but i was serious i wud like to know the necessary components where iam supposed to connect and stuff like that

**Nigel Goodwin** · 24th January 2007, 08:51 AM

Quote:

Originally Posted by earjun

Guys you are getting very funny here but i was serious i wud like to know the necessary components where iam supposed to connect and stuff like that

Buy a cheap radio, take it to pieces - and use the pieces to build your own - by FAR the cheapest way. Expect to spend hundreds of times as much buying all the parts, assuming you can even get hold of them?.

earjun · 24th January 2007, 12:26 PM

[quote= Expect to spend hundreds of times as much buying all the parts, assuming you can even get hold of them?.[/QUOTE]
so do u advise me not to try it or shud i start with an AM radio first??

stevez · 24th January 2007, 12:30 PM

Places like Ocean State Electronics, among others, sell complete kits that are designed with education/instruction in mind. The AM/FM kit is $30 US - as already stated - probably the most economical approach for a radio of similar complexity.

**Nigel Goodwin** · 24th January 2007, 12:33 PM

Building a radio isn't anything like a practical project these days, they are just so cheap to buy - which is why it's difficult to find parts to build them with.

If you really want to build a radio (as a learning project, rather than you want a radio), I would suggest building it in a modular fashion - with the front end, IF, and audio stages all on seperate boards. I would also suggest probably starting by NOT using IC's and building a 'proper' IF amplifier with transformers and transistors.

But the best source for parts is really still an old radio!.

stevez · 24th January 2007, 04:46 PM

The kit from OSE (other sources carry the same kit) appears to be designed and laid out in a way that fits Nigel's description. It appears to be discrete components - the circuit board is labelled well, to the extent that I've seen in pictures.

While not the same challenge as trying to gather the right components, PCB and so on - the kit may provide you a more direct path to your goal of learning about a radio.

**Nigel Goodwin** · 24th January 2007, 05:20 PM

Quote:

Originally Posted by stevez

While not the same challenge as trying to gather the right components, PCB and so on - the kit may provide you a more direct path to your goal of learning about a radio.

I would agree, and because they buy the components in bulk the price is reasonable.

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21st January 2007, 11:38 AM	(permalink)
earjun	Fm Radio Some one please help me with making an fm radio please

21st January 2007, 12:33 PM	(permalink)
baftab	what kind of help? be more specific

21st January 2007, 02:18 PM	(permalink)
audioguru	Another request for "a super-regen" piece of crap. Or an old TDA7000 piece of crap. The Dollar store sells a "scanning" FM radio for $1.00. It is a piece of crap with the newest version of the TDA7000 IC inside. Its earphones are worth more than the entire circuit. __________________ Uncle $crooge

21st January 2007, 03:13 PM	(permalink)
bananasiong	http://www.electro-tech-online.com/e...-receiver.html try this? it works with my fm transmitter... or i can receive 2 stations only... __________________ Superman returns..

21st January 2007, 03:19 PM	(permalink)
audioguru	Connect two wires to a banana then stick it in your mouth. It will pickup 10 FM stations and you will hear them in surround sound! __________________ Uncle $crooge

21st January 2007, 07:16 PM	(permalink)
audioguru	The rovers that NASA sent to Mars more than 3 years ago are still running around there: http://marsrovers.nasa.gov/home/ __________________ Uncle $crooge

24th January 2007, 08:49 AM	(permalink)
earjun	Guys you are getting very funny here but i was serious i wud like to know the necessary components where iam supposed to connect and stuff like that

24th January 2007, 12:26 PM	(permalink)
earjun	[quote= Expect to spend hundreds of times as much buying all the parts, assuming you can even get hold of them?.[/QUOTE] so do u advise me not to try it or shud i start with an AM radio first??

24th January 2007, 12:30 PM	(permalink)
stevez	Places like Ocean State Electronics, among others, sell complete kits that are designed with education/instruction in mind. The AM/FM kit is $30 US - as already stated - probably the most economical approach for a radio of similar complexity. __________________ stevez

24th January 2007, 12:33 PM	(permalink)
Nigel Goodwin	Building a radio isn't anything like a practical project these days, they are just so cheap to buy - which is why it's difficult to find parts to build them with. If you really want to build a radio (as a learning project, rather than you want a radio), I would suggest building it in a modular fashion - with the front end, IF, and audio stages all on seperate boards. I would also suggest probably starting by NOT using IC's and building a 'proper' IF amplifier with transformers and transistors. But the best source for parts is really still an old radio!. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

24th January 2007, 04:46 PM	(permalink)
stevez	The kit from OSE (other sources carry the same kit) appears to be designed and laid out in a way that fits Nigel's description. It appears to be discrete components - the circuit board is labelled well, to the extent that I've seen in pictures. While not the same challenge as trying to gather the right components, PCB and so on - the kit may provide you a more direct path to your goal of learning about a radio. __________________ stevez