What's On The Mediumwaves (Nighttime)

Here are some interesting statistics compiled today using the FCC database 04-25-2016. All data are for US licensed stations in the NIGHTTIME and UNLIMITED services. Stations outside the continental US (Hawaii, Alaska, Puerto Rico, etc.) are also included.

NIGHTTIME AND UNLIMITED STATION DETAILS REPORT

Separate facilities: 4,106 (includes SILENT facilities)

Notes:

   (U) = UNLIMITED
   (N) = NIGHTTIME

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(CL) Current, License records: 4,106

UNLIMITED: 781
NIGHTTIME: 3,325

IBOC UNLIMITED: 53 registered
IBOC NIGHTTIME: 181 registered

Class A: 73
Class B: 1,746
Class C: 996
Class D: 1,291

W-Call Signs: 2,350
K-Call Signs: 1,756

Services above band center (1115 KHz): 2,818
Services below band center (1115 KHz): 1,288

East of St. Louis, MO: 2,282
West of St. Louis, MO: 1,824

Quadrant 1 (NE) from St. Louis, MO: 1,015
Quadrant 2 (SE) from St. Louis, MO: 1,267
Quadrant 3 (SW) from St. Louis, MO: 921
Quadrant 4 (NW) from St. Louis, MO: 903

Combined power (watts): 10,898,247

Total towers: 7,761

Tallest tower: 992 feet (302 meters) (N)WRDT-560.000 (0.565 wavelength)
Shortest tower: 32 feet (10 meters) (N)WSIV-1540.000 (0.050 wavelength)

Towers taller than 225° (0.625 wavelength or 5/8 wave): 36 (N)WGKA-920.000 (N)WKY-930.000 (U)KDKA-1020.000 (N)WHO-1040.000 (N)KMTA-1050.000 (N)WZOT-1220.000 (N)KWIX-1230.000 (U)WBVP-1230.000 (N)WJOI-1230.000 (N)KTAM-1240.000 (N)WGVM-1260.000 (N)WIJD-1270.000 (N)WKLJ-1290.000 (N)KTCK-1310.000 (N)WAGF-1320.000 (U)KDTD-1340.000 (U)KSEK-1340.000 (N)KRMD-1340.000 (U)WXKX-1340.000 (N)WLOU-1350.000 (N)KMJM-1360.000 (N)WSTC-1400.000 (U)KMNV-1400.000 (N)KKLO-1410.000 (N)WAOC-1420.000 (N)WPRS-1440.000 (N)KKXL-1440.000 (N)WMBD-1470.000 (U)WSIP-1490.000 (U)WOMI-1490.000 (U)WKLQ-1490.000 (N)KFBK-1530.000 (N)WBGZ-1570.000 (N)WFUR-1570.000 (N)WBCP-1580.000 (N)KTIQ-1660.000

Towers shorter than 36° (0.100 wavelength or 1/10 wave): 7 (N)KAPS-660.000 (N)KCFM-1250.000 (N)WKCY-1300.000 (N)KFJL-1400.000 (N)KBZY-1490.000 (N)KJNT-1490.000 (N)WSIV-1540.000

Towers taller than 750ft: 6 (N)WRDT-560.000 (N)WNAX-570.000 (N)KMJ-580.000 (U)WSM-650.000 (N)WKY-930.000 (N)WHO-1040.000

Towers shorter than 75ft: 12 (N)KCFM-1250.000 (N)WKCY-1300.000 (N)KFJL-1400.000 (N)WZBR-1410.000 (N)WLUX-1450.000 (N)WIRB-1490.000 (N)KLZN-1490.000 (N)KBZY-1490.000 (N)KJNT-1490.000 (N)KVOG-1530.000 (N)WSIV-1540.000 (N)WPDC-1600.000

Total of all tower heights: 1,943,521 feet (592,385 meters)

Greatest tower spacing with respect to array reference point: 2,663 feet (812 meters) (N)KBOW-550.000 (1.489 wavelength)
Closest tower spacing with respect to array reference point: 10 feet (3 meters) (N)WBRD-1420.000 (0.014 wavelength)

Tower type 1 count: 7,230 normal mast
Tower type 2 count: 522 top loaded
Tower type 3 count: 4 sectionalized, top loaded (U)KNBR-680.000 (U)KDKA-1020.000 (N)WHO-1040.000 (N)WOC-1420.000
Tower type 4 count: 5 sectionalized, not top loaded (N)KBIF-900.000 (N)WKY-930.000 (N)WROK-1440.000 (N)KFBK-1530.000

Omni-directional arrays (single tower): 2,471
Directional arrays (multi-tower): 1,635

Highest RMSTheoretical mV/m (published) at 1 km: 3126.79 (N)KFBK-1530.000
Lowest RMSTheoretical mV/m (published) at 1 km: 9.75 (N)KLEY-1130.000

Single tower lowest gain in dB (calculated): -14.71 (N)WDOC-1310.000 (rms standard)
Single tower lowest mV/m at 1 km (calculated): 8.889 (N)WDOC-1310.000 (rms standard)
Single tower highest gain in dB (calculated): 4.188 (N)WHO-1040.000 (rms standard)
Single tower highest mV/m at 1 km (calculated): 3501.793 (N)WHO-1040.000 (rms standard)

Multi-tower deepest array notch in dB (calculated): -39.835 (N)WAQI-710.000 (rms standard)
Multi-tower deepest array notch in mV/m at 1 km (calculated): 0.585 (N)WWSJ-1580.000 (rms standard)
Multi tower highest array gain in dB (calculated): 12.717 (N)KNTH-1070.000 (rms standard)
Multi tower highest array mV/m at 1 km (calculated): 7592.594 (N)WWJ-950.000 (rms standard)