Support for frequencies below 76MHz

mathertel / Radio

An Arduino library to control FM radio chips like SI4703, SI4705, RDA5807M, TEA5767.

http://mathertel.github.io/Radio

BSD 3-Clause "New" or "Revised" License

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Support for frequencies below 76MHz #35

Open K4ktus123 opened 4 years ago

K4ktus123 commented 4 years ago

Is it possible to receive stations below 76MHz? And if no, is it ever going to be supported?

gartnl commented 4 years ago

Technical possible for RDA5807, I extended my personal library to do so ( 50-76, and 76-115 ), and to tune with direct frequency input with 1 kHz resolution for HAM frequencies. But .. Reception bandwidth still is broadcast FM. In mono 22,5 kHz as per datasheet. There is no narrowband support in the chip. So yes, it can be done , even without breaking the current library, but I doubt that it adds anything for most users.