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dufferdev

#### audioguru

##### Well-Known Member
I don't know where in the world you are, but here in Canada I can buy a cheap Chinese FM radio at The Dollar Store for $1.00. It comes with earphones, a battery and has a light that is a flashlight. It uses a Chinese copy of a Philips radio IC. You don't tune it, it scans the dial and you can stop the scan at a station. Its reception is for strong local stations only, it picks up a lot of interference and its sound is very distorted. You might be able to make one for$25.00 in parts if you can buy all the parts somewhere.

#### audioguru

##### Well-Known Member
I saw some crystal FM radio circuits on the internet. They are so simple that I laughed.

##### Well-Known Member
- is this 1 US dollar, or dollar from another country?
- you mentioned that it must be a circuit. So I assume then that we must include a speaker for the sound to come out, but is this correct? Or is it ok to simply offer a connection for IPOD headphones or similar?
- must we include the pcb in this budget?
- must we include the connectors in this budget?
- must we include the power supply in this budget?

My starting assumption is that we will not find a complete FM receiver IC to fit into our budget, so the design may have to be a simple discrete design using low cost transistors like 2N2222 or the like. This is why it is best to find the simplest designs.

#### dufferdev

##### New Member

The budget is USD....

- The output will be in the HEAD-PHONES no speaker required.... Our cost $0 - We have to include PCB, however currently we shall use a general breadboard.... A 6cm by 6cm breadboard costs$ 0.2 in India

- Which connectors ?

#### dufferdev

##### New Member

Can we have a circuit for the Scan and Reset function as it is available with those cheap FM radio ? If you have any such circuit please help. I shall try to source the components from Asia which shall be cheaper....

Thanks
dufferdev

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