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|8th March 2008, 11:43||#1|
Join Date: Aug 2007
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Questions about FM/ AM tuning intervals
Iíve some basic question about the AF / FM tuning intervals across regions. In US FM frequency spectrum is 87.9Mhz -107.9 MHz with interval of 200KHz. In India I think its 87.9-108MHz with interval of 100Khz (?). But strangely almost all the private Indian FM channels are spaced on odd frequencies. Like radio mirchi 98.3, Radio city 91.1MHz with some exceptions. AIR channels are on even channels. In fact Radio city changed their frequency from 91MHz to 91.1 MHz couple of years ago. Does anyone knows why? And why are they broadcasting on odd frequencies?
Reason I am asking is many people buy HUs from abroad and they should work fine on these FM channels most of the time (do they?)
What about AM does anyone knows how AMís frequency distribution across the regions is?
I also would know to know if any HU provides 'fine tuning' option ?
|8th March 2008, 12:40||#2|
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|8th March 2008, 13:18||#3|
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91.1, 91.9, & 93.5, 94.3 etc . There is a spacing of 800 KHz used in India (at least in BLR). Just list out all the stations we have in BLR, and you will see this pattern. (Sorry, but dont remember the other frequencies).
The change of frequency done by Radio City was to follow the 800 KHz spacing directive.
Last edited by condor : 8th March 2008 at 13:20.
|8th March 2008, 23:49||#4|
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see post 12
and links in post 16
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