parnass@ihu1h.UUCP (Bob Parnass, AJ9S) (05/30/85)
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Subcarrier Transmissions Noted in the NY/NJ Area
On a recent trip to the northern New Jersey area, I did some
subcarrier listening by connecting the antenna jack of a
Yaesu FRG7700 receiver to the audio stage of a cheap televi-
sion set:
- By tuning the Yaesu to 88.0 kHz FM, and the TV to chan-
nel 4, WNBC-TV New York was heard rebroadcasting WYNY-
FM audio. WYNY is an NBC affiliate station.
- By tuning the Yaesu to 31.5 kHZ USB, and the TV to
channel 68, the audio of WWHT-TV Newark, a scrambled TV
station, was monitored.
Other signals were heard, including a series of 6 or 7
telemetering tones sent every 30 seconds on an FM subcarrier
of a TV station.
Several FM broadcast stations in the New York area were also
using subcarrier technology. One station was transmitting 3
different subcarrier channels of information concurrently.
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Bob Parnass, Bell Telephone Laboratories - ihnp4!ihu1h!parnass - (312)979-5414