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Time via RDS in Houston

R

RSX11

Hello all, I'm not a radio biz pro like all of you are, just someone with a keen interest in the technical aspects of radio. I was wondering if any of you have any insight into the RDS signal available on a couple of Houston stations. I'm finishing up building a homebrew RDS decoder. It's mostly working, but I'm seeing a couple of unusual results. One is that it displays the RDS time from KUHF 88.7 as two minutes behind the correct time. Another anomaly is that I'm seeing the RDS time from KKHH 95.7 as the time plus 32 hours - eg, right now it displays 46:55 instead of the correct 14:55.Do any of you know if there is anything...unusual...about the RDS time on these two stations?

Thanks.
 
RSX11 said:
Hello all, I'm not a radio biz pro like all of you are, just someone with a keen interest in the technical aspects of radio. I was wondering if any of you have any insight into the RDS signal available on a couple of Houston stations. I'm finishing up building a homebrew RDS decoder. It's mostly working, but I'm seeing a couple of unusual results. One is that it displays the RDS time from KUHF 88.7 as two minutes behind the correct time. Another anomaly is that I'm seeing the RDS time from KKHH 95.7 as the time plus 32 hours - eg, right now it displays 46:55 instead of the correct 14:55.Do any of you know if there is anything...unusual...about the RDS time on these two stations?

Thanks.
Click to expand...

RDS allows slow-speed data to be transmitted on the 57 kHz subcarrier of FM broadcasts. It is typically used for conveying the artist and title of the song currently playing, the identification information for the affiliated station, or even advertising. FM subcarriers have have used in the past for Muzak (subscription music) and Taping for the Blind, which is narration of text materials such as newspapers and magazines.
 
Time is a largely ignored and not very supported feature of RDBS. Chances are the clocks aren't checked very often and aren't automatically sync'd up. The only stations that I'm aware of that pay any attention to the RDBS clock feature are the NPR affiliated stations.
 
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