Tiny FM Radio Chip

[mv]

Hello,

I bought a tiny FM radio (made in China!) that has a chip in it

The Chip looks like SDC 304M (Cant make out exactly) and has digits
088
The rest of the radio contains the amp, coils and capacitors.

Now, on to my problem - The radio has "Reset" and "Scan", the radio
was probably manufactured for use in the US so the FM Frequency
increments are different from those used here in India. This means bad
reception. How can I fix this? Lots of people will be very pleased if
they could get better sound from these nifty devices.

Thanks in advance.

mv

 

[Andre]

Hello,

I bought a tiny FM radio (made in China!) that has a chip in it

The Chip looks like SDC 304M (Cant make out exactly) and has digits
088
The rest of the radio contains the amp, coils and capacitors.

Now, on to my problem - The radio has "Reset" and "Scan", the radio
was probably manufactured for use in the US so the FM Frequency
increments are different from those used here in India. This means bad
reception. How can I fix this? Lots of people will be very pleased if
they could get better sound from these nifty devices.

Replacement of the tuning tank coil should fix the problem. this
sounds like it is tuned by a tuning diode.

You will need :- a spectrum analyser , coil winder, etc. Or just use a
frequency counter to tune the thing

-A

 

[Ken Taylor]

[email protected] (mv) wrote in message

Replacement of the tuning tank coil should fix the problem. this
sounds like it is tuned by a tuning diode.

You will need :- a spectrum analyser , coil winder, etc. Or just use a
frequency counter to tune the thing

-A

The OP has problems with the frequency steps, not the band. The US steps on
the even digit (ie. 90.2, 90.4, etc) whereas the real world - I mean, rest
of the world - uses the odd frequency.

You can buy devices to do a conversion for you, such as:
http://www.edl.co.nz/ConvertersHP/pb1500.htm
but it probably costs as much as the OP's radio (and is doubtless twice as
big!). Short answer - unlikely to be able to be done.

Ken