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KGHO, now that is a set of calls I have not heard in a while. Its nice to see they are back on the air but on a LPFM this time which is kind of a shame. I remember this from being on 920 AM about 10 years ago on a station that was running AM stereo and proud of it. They had it in their top of the hour ID “Our dial position, 920 AM stereo” and perhaps in their logos too. Even during the stunt as AM stereo 920 The Boom in 2003 it was prominent in their IDs.
“My early Sangean HDT-1 tuner appears to…It sounds a little goofy, but it does switch to AM stereo after it has been tuned to KBPS for a few seconds.”
My Accurian does too noticed that when I actually could get an AM stereo station in my area. Sadly that is no longer true and I could be in the process of hunting down my own C-QUAM transmitter soon to fill this void. It would only be 100 mW and part 15 legal though. Can’t get KBPS during the day as I am relatively far from the Portland metro area at about 65 miles and their signal is riddled with interference from other AM stations.
You should hear those Optimods in stereo, very rich and full bodied sound. Oldies works exceptionally well in AM stereo but the example I am thinking of is past. Olympia used to have KGHO 920 as an oldies station running stereo and they were so proud of it that status was announced in the top of the hour ID. Processor used there was an Orban Optimod 9100A and I am sure KVI already has this type of equipment set up. The wide channel separation typical on 1960s stereo mixes will certainly utilize the modulation advantage that C-QUAM has over FM stereo.
If I was closer to Portland I would make an aircheck of KBPS 1450 on a totally stock Accurian. That does decode C-QUAM stereo but albeit in the Ibiquity analog mask bandwidth which is quite narrow and its only certain versions because I think it made some of the people at Motorola upset. Mine was made in September of 2006 and I personally confirmed it to have this capability by accident actually kind of a long story there. Its only certain HD Radios which have C-QUAM AM stereo decoding but they are out there.
As would I but you would be surprised. Many vehicles made recently have AM stereo receivers in the dash plus lots of older cars with that capability are still on the road too. Also some of the HD Radio receivers decode C-QUAM stereo correctly as well such as certain versions of the Accurian, the Radioposidy-100, and the Sangean HDT-1.
This is interesting news KVI always booms in even where I live 100 miles from the transmitter site. Now if only they would return to stereo operation in either digital or analog.