raccoonradio said:Check out the CP for 1200, NIGHTS
http://radio-locator.com/cgi-bin/pat?call=WXKS&service=AM&status=C&hours=N
Covering Boston and a good chunk of North Shore, South Shore. Perhaps 1200 Spanish and
101.7 talk? Or vicey-versy?![]()
Regardless of what you may think you found at radio-locator, WXKS (AM) holds no CP for a change in its night pattern, nor has it held such a CP since a license to cover was granted for its move to Newton. There was a CP for a change in the Newton day pattern (using four towers instead of the original three). A license to cover that CP was granted a year or so ago. Of necessity, when a station uses different day and night facilities and is making a change to one of its patterns, it must re-apply for its existing pattern for the mode that is not changing. Dunno why the FCC does it that way. Anyhow, that's what happened here. The day pattern was modified to change from three towers to four, which changed the pattern noticeably (more signal to the north, mostly; less to downtown Boston). What your radio-locator link shows is the original 50-kW night pattern. This map should be at radio-locator but it should not show as a granted but still unbuilt CP. The night facility changed when the station moved from Framingham to Newton and has not changed since.
Also, radio-locator's AM night pattern plots greatly overstate the nighttime coverage of all stations except Class As. (In New England the only Class A AMs are WBZ and WTIC.) The outer contour is 0.5 mV/m. WXKS's NIF (nighttime interference-free) contour is in excess of 10 mV/m, WELL inside of radio-locator's inner contour, which is 2.5 mV/m. WXKS does not deliver a listenable signal at night until you are WELL within the inner contour on the radio-locator maps.