Broadcast FM demod: RDS is broken

[f4exb]

Zero decodes when engaged although baseband spectrum shows good quality RDS carrier

[f4exb]

I have to check if the sample rate and/or RF bandwidth that should drive the channelizer downsampling have an influence

[f4exb]

Baseband sample rate should be 250 kS/s or larger no matter what is set for the RF filter.

Well at the moment there is no documentation at all for this plugin and it is not a small job due to the many fields of RDS.

[DL4APT]

if I remember correctly RDS works fine but only in Stereo mode

[f4exb]

Hello, it needs the 19 kHz pilot to be locked so most probably this is indeed tied to the stereo mode.

[f4exb]

There's seem to be an issue with the sample rate. Some baseband sample rates cause it not to work. For example 384 kS/s. Maybe there's an assumption somewhere that depends on the sample rate.

[csylvain]

fyi: in the States (possibly also Canada), there are stations transmitting RDS without a 19 kHz pilot (primarily News and Information stations using mono to extend their service area).

[f4exb]

dropped