Fm Radio module

[kblnig]

Hi i am building a small ghettoblaster, but i have come to a point where i need to mount a small radio to the blaster.. Does anyone know of any good diy fm radio kit?

[tomchr]

Dav,

Most semiconductor manufacturers offer FM radios in a single-chip solution. In the 'old' days, it was the TDA7000 from Philips. I'm sure something newer and fancier is around these days. Basically one of these chips with a handful of passives will give you an FM receiver. The older ICs will require a tunable inductor which may be hard to find these days. The newer ones only require caps and resistors. I recall a few DIY Audio threads about FM receiver ICs... You may want to try the search function.

Good luck with your boom box...

~Tom

[picowallspeaker]

Take out a used one from another ghetto blaster (aka portable radio-cassette player ) .
They are usually in a separate module (pcb) ,with 5-6 wires ,which carry power supply ,L&R channels and AM/FM selection .

[MarcelvdG]

For portable FM radio, the TEA5760 is a pretty good chip, but it has a chip scale package that you can't hand solder. If you search the internet, you'll also find modules with this chip, such as http://www.ienk.com/fm-radio-module-tea5760-p-338.html

[kblnig]

@ tomchr - i had been looking at the TDA7000 since that comes up quite often on "fm radio module" on google seaches but it seems rather old.. i was hoping that some newer models are available

@ picowallspeaker - i have thought about this solution.. I have an old mini stereo that i am not using any more.. I am not sure if this stereo is build as modules though.. it has got a digital display and no turnable button for the frequency selection.. only buttons to tune the frequency.. I consider this a plus if it can be disassembled and integrated into my own boombox i doubt it however.. maybe you got another oppinion about this? - the model is a phillips fw330

@ marcelvdg.. That looks very interesting.. i will look into that.. if you got any pros and concerns for that chip feel free to express them :P

@ all 3 of you - thank you very much!

[MarcelvdG]

A disadvantage of the TDA7000 is that it is not really suitable for FM stereo because of the bandwidth limitations of its FLL loop, and that the FLL may lock to a stronger neighbouring station. An advantage is that it isn't bus-controlled, so you don't have to program any microcontrollers to get it running.

Regarding the TEA5760, I'm not objective since several years ago I was on the design team that designed it (I did the front-end). It is controlled by I2C, so you will need a microcontroller. It is a chip with fully analogue signal processing operating in class A, so that should appeal to audiophiles. It has a continuous automatic gain control with a large control range and the people who designed the IF filter did their best to keep stereo distortion low, also when the left and right signals are not equal (a well-known spec trick is to measure the distortion only with L=R). The intermodulation performance is limited, but that is true for any portable radio chip.

[Andy5112405]

The current IC FM Radio is the BA1404 and its derivatives. They are cheap, easy to use and perfectly DIYable.

[MarcelvdG]

According to its datasheet, the BA1404 is a transmitter, not a receiver.

[quadtech]

Originally Posted by kblnig

Hi i am building a small ghettoblaster, but i have come to a point where i need to mount a small radio to the blaster.. Does anyone know of any good diy fm radio kit?

One of these?

MP3 USB or SD Card and Radio Module with Remote Control | eBay

12V FM MOTORCYCLE RADIO,WATERPROOF SPEAKER, MP3 IPOD | eBay

Musik-Player USB TF/SD FM MP3 HIFI Lautsprecher Pink | eBay