US bought car audio FM not working in India

sunchand · 27th April 2004, 08:55 AM

Hi,
I had bought a sony car audio systsm cdx-mp40, the problem is that the system is not able to catch india FM frequencies which are even like 91. By default it moves by .2 and stops only at odd frequencies like 91.1 or 90.9 and skips all even frequencies.
Is there a solution to it.

TIA

gjo · 19th May 2004, 10:27 AM

Hi

I too have the same problem with my Kenwood unit which I bought in the US last year, so I cant tune in to Radio City. If you find a solution for it please let me know too.

Thanks

George

Magura · 19th May 2004, 10:45 AM

Isnt it a matter of the RDS?? Ive seen RDS over ruling the manual search before.

Magura

Ouroboros · 19th May 2004, 11:24 AM

I thought it was that the USA used a different channel spacing from Europe (and India as well I guess), so that the synthesiser tunes to the wrong frequencies.

Perhaps there is some internal switch to set the oscillator channel spacing?

phase_accurate · 19th May 2004, 11:30 AM

Quote:

Perhaps there is some internal switch to set the oscillator channel spacing?

Or solder bridges or whatever. Chances are big that they only build one basic model that is esily adopted for different countries. It may also be some firmware in a microcontroller, that feeds the synthesizer chip with frequency info (which is usually done via a serial interface nowadays).

Have you got a schematic of this car radio ?

Regards

Charles

Richard C · 19th May 2004, 11:55 AM

This used to be a problem in the UK with the radios in grey-imported Japanese cars and there was an inexpensive plug-in adaptor available that provided the necessary frequency shift.

Might have to search the internet for this although I agree it's likely that in most cases there is a 'hidden' option on the radios.

gjo · 19th May 2004, 04:29 PM

I guess youre right-they must build asingle model. I just got asimple manual, not detailed schematics. However let em check on the web if there is any Kenwood site that gives this info.

George

mitch808 · 20th May 2004, 05:55 PM

go to www.melting-pot.com They have what you want.

27th April 2004, 08:55 AM	#1
sunchand diyAudio Member Join Date: Apr 2004 Location: bangalore	US bought car audio FM not working in India Hi, I had bought a sony car audio systsm cdx-mp40, the problem is that the system is not able to catch india FM frequencies which are even like 91. By default it moves by .2 and stops only at odd frequencies like 91.1 or 90.9 and skips all even frequencies. Is there a solution to it. TIA

19th May 2004, 10:45 AM	#3
Magura diyAudio Member Join Date: Oct 2003 Location: Denmark, Viborg	Isnt it a matter of the RDS?? Ive seen RDS over ruling the manual search before. Magura __________________ Everything is possible....to do the impossible just takes a little while longer. www.class-a-labs.com

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19th May 2004, 10:27 AM	#2
gjo diyAudio Member Join Date: May 2003 Location: Bangalore, India	Hi I too have the same problem with my Kenwood unit which I bought in the US last year, so I cant tune in to Radio City. If you find a solution for it please let me know too. Thanks George

19th May 2004, 11:24 AM	#4
Ouroboros diyAudio Member Join Date: Dec 2003 Location: Nottingham UK	I thought it was that the USA used a different channel spacing from Europe (and India as well I guess), so that the synthesiser tunes to the wrong frequencies. Perhaps there is some internal switch to set the oscillator channel spacing?

19th May 2004, 11:55 AM	#6
Richard C diyAudio Member Join Date: Jul 2003 Location: Nottingham, England	This used to be a problem in the UK with the radios in grey-imported Japanese cars and there was an inexpensive plug-in adaptor available that provided the necessary frequency shift. Might have to search the internet for this although I agree it's likely that in most cases there is a 'hidden' option on the radios.

19th May 2004, 04:29 PM	#7
gjo diyAudio Member Join Date: May 2003 Location: Bangalore, India	I guess youre right-they must build asingle model. I just got asimple manual, not detailed schematics. However let em check on the web if there is any Kenwood site that gives this info. George

20th May 2004, 05:55 PM	#8
mitch808 diyAudio Member Join Date: Apr 2004 Location: Kalifornia	go to www.melting-pot.com They have what you want.