![]() The station was the first station in the country to use videotape for local programming and one of the first to broadcast in color. In October 1948 the station added CBS programming to its schedule, and additional secondary affiliations with NBC and ABC followed a year later. Without means to produce local programming, WNHC-TV simply rebroadcast the signal of DuMont's New York City flagship, WABD (now WNYW). The station broadcast from WNHC radio's building on Chapel Street in downtown New Haven, but with no studio facilities of its own. WNHC-TV was originally an affiliate of the DuMont Television Network, and claims to have been the first full-time station of that short-lived network. The station is Connecticut's oldest television outlet and the second-oldest in the New England region (WBZ-TV in Boston signed on less than a week earlier). The station was founded by the Elm City Broadcasting Corporation, the owners of WNHC radio (1340 AM, now WYBC and 99.1 FM, now WPLR). What today is WTNH first went on the air on June 15, 1948, as WNHC-TV, originally broadcasting on channel 6. New Haven/ Hartford/ New London, Connecticut The two stations share studios on Elm Street in downtown New Haven, and WTNH broadcasts from a transmitter located in Hamden, Connecticut. The station is owned by Nexstar Media Group, as part of a duopoly withMyNetworkTV affiliate WCTX (channel 59). Since hail can cause the rainfall estimates to be higher than what is actually occurring, steps are taken to prevent these high dBZ values from being converted to rainfall.WTNH, channel 8, is an ABC-affiliated television station located in New Haven, Connecticut, USA. Hail is a good reflector of energy and will return very high dBZ values. These values are estimates of the rainfall per hour, updated each volume scan, with rainfall accumulated over time. Depending on the type of weather occurring and the area of the U.S., forecasters use a set of rainrates which are associated to the dBZ values. The higher the dBZ, the stronger the rainrate. Typically, light rain is occurring when the dBZ value reaches 20. The scale of dBZ values is also related to the intensity of rainfall. The value of the dBZ depends upon the mode the radar is in at the time the image was created. Notice the color on each scale remains the same in both operational modes, only the values change. The other scale (near left) represents dBZ values when the radar is in precipitation mode (dBZ values from 5 to 75). One scale (far left) represents dBZ values when the radar is in clear air mode (dBZ values from -28 to +28). Each reflectivity image you see includes one of two color scales. The dBZ values increase as the strength of the signal returned to the radar increases. So, a more convenient number for calculations and comparison, a decibel (or logarithmic) scale (dBZ), is used. Reflectivity (designated by the letter Z) covers a wide range of signals (from very weak to very strong). "Reflectivity" is the amount of transmitted power returned to the radar receiver. The colors are the different echo intensities (reflectivity) measured in dBZ (decibels of Z) during each elevation scan.
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