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What ever happened with using SSB-SC for FM stereo?

pclover

pclover

So I'm curious what ever happened with using SSB for FM stereo? I lost track of it awhile ago but there was some pushback on it due to a lack of testing and others that favored it. Is anybody using this full time or is it still considered experimental from the FCC?

Not a broadcast engineer here but curious what you do think of it.

There was some comments that it's vastly superior for multipath compared to DSB-SC that's been in use since FM stereo was invented.

Here is a old radio world article SSBSC: A Win-Win for FM Radio?

Couldn't think of a better place to put it other then here.
 
The major downside is that it isn't compatible with the DSP-based tuners used in HD Radios, which are becoming increasingly common. The DSP detects it as a non-standard stereo signal and responds by blending it to nearly mono.
 
kevtronics said:
The major downside is that it isn't compatible with the DSP-based tuners used in HD Radios, which are becoming increasingly common. The DSP detects it as a non-standard stereo signal and responds by blending it to nearly mono.
Click to expand...
I used to have a 2000 Jeep Cherokee Sport, which was given to my son. I noted that stations running HD caused it to go into blend mode. The tuner used to interpret the sideband data as noise. Would do the same with SCA's.
 
kevtronics said:
The major downside is that it isn't compatible with the DSP-based tuners used in HD Radios, which are becoming increasingly common. The DSP detects it as a non-standard stereo signal and responds by blending it to nearly mono.
Click to expand...
That's a shame and disappointing. With that it becomes a non starter and explains why it never took off.

More then HD radios just about anything new and modern is DSP based now...
 
Last edited:
Kelly A said:
I used to have a 2000 Jeep Cherokee Sport, which was given to my son. I noted that stations running HD caused it to go into blend mode. The tuner used to interpret the sideband data as noise. Would do the same with SCA's.
Click to expand...
I noticed on some old car radios having a translator 200 Khz from the tuned frequency results in issues including stereo separation loss and interference. Newer stuff not an issue. I guess it's just terrible selectivity.

Modern DSP radios have variable filter bandwidths that can swap. Eliminates this problem I guess. DSP magic is awesome. Still a shame it seems new stuff was not designed with SSB-SC stereo in mind.
 
The Subaru "Starlink" (no relation to the satellite) infotainment blends mostly to mono on HD stations.
Yes, running the Omnia 9 in SSB mode also blends to mono.
 
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