Rockbox Development > Feature Ideas
all region for the fm radio
MajiKool Dragonâ„¢:
id like to see the ability to access Japan mode frequencies and US mode frequencies in the same region mode.
bluebrother:
This is not really possible -- besides the frequencies limit there is also a setting on the chip (at least for the TEA5767) that is needed to tune in correctly (don't remember of the top of my head what exactly it did -- check the TEA datasheet)
Allowing a wider frequency range is a different thing. Nevertheless, I don't think Rockbox should allow into frequencies that are of no use in a region. If there is no region setting matching your location the region setting should get extended instead.
LurkAzusa:
I would also like a wider frequency range to be available. At one time there was a patch. I was able to pick up a television station or two and air traffic control frequencies. As a private pilot, I found that to be very nice.
TexasRockbox:
There can be interesting things with a wider range of frequencies. If one could enable frequencies below 76MHz there are some frequencies (72-76MHz) allocated for assisted listening (some churches, movie theaters, and concert venues). Aircraft controller frequencies, as far as I know in the USA, utilize AM rather than FM so the reception would be quite unsatisfactory. Some "all in one" tuner chips incorporate both AM and FM sections (the old iRiver imp-350 and imp-550 come to mind (Philips chip)) but in those cases only external hardware specific to supporting the FM reception (IF filters, inductors, etc.) was utilized so the AM section was left useless. Additionally, AM is very susceptible to interference from computers (which these players basically are) so it's no surprise that none of them incorporate AM. The AM coil antenna would be too close to the microprocessor -- or additional (bulky) shielding would be needed.
EDIT: Not looking extensively into these chips it might be possible to extend frequency control higher into the VHF-amateur band (enabling USA weather radio reception) but I would suspect the tuner hardware would begin to sharply attentuate frequencies above the FM broadcast band so one would would probably have to live very close to such transmitters.
Alx:
Yes, all available frequency range can be very interesting.
And many exUSSR countries has a special FM-range: 64-75 and 88-108 MHz together. Many FM stations broadcasting in UHF2 range (88-108), but several stations broadcasting in old UHF1 range.
Another interesting frequency is about 144 MHz, this is radioamateur frequency, but FM chip can not support it.
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