Forty-five Washington area stations through January 1, 2017, listed chronologically by establishment date.

Part I: Stations first authorized before 1941:

        1    2    3    4    5    6    7    8    9    10   11   12   13   14   15   16   17   18   19   20
       ____ ____ ____
1922  . WJH. WDM. WDW.----.----.____ ____ ____ ____                                                          1922
      . 833. 833. 833. WIL. WPM. WMU.WEAS.WHAQ.WIAY ____
      .    .    .----. 833. 833. 833. 833. 833. 833.WQAW.
1923  .    .    .    .    .    .    .    .    .    . 833.                                                    1923
      |1140|    |    .    .----|1150|    .    .    |1270|---- ____ ____ ____
      |1100|    |    .    .    |    |    .____.    |    |WABE|NAA |WCAP. WRC|
1924  |____|1280|    .    .    |    |____.    |    |____|1060|690 |640 . 640|____                            1924
           |    |     ----     |    |         |1100|     ----|    |    .    |WRHF|____
           |1110|              |    |          ----          |    |    .    |1170|WBES|----
1926        ----                ----                         |    |-------> |    |1350|WMAL|                 1926
                                                             |    |----     |    |    |1410|----
                                                             |    |    |    |    |    |    |WTRC|
1927                                                         |    |    |    |    |    |1020|1250|            1927
                                                             |    |    |    | 940|1010|1310|1460|
                                                             |    |    |    | 930|1130| 990|WTFF|
1928                                                         |    |    |    |    |    |1240|1480|            1928
                                                             |    |    |    |    |    |    |    |
                                                             |    |    |    | WOL|WSMD|    |WJSV|
11/11                                                        |    |    | 950|1270|1310| 630|1460|            11/11
1928                                                         |    |    |    |1310|____|    |    |            1928
                                                             | 690|    |    |    |    |    |    |
1930                                                         |    |    |    |    |    |    |    |            1930
                                                             |    |    |    |    |    |    |    |
                                                             |    |    |    |    |    |    |    |
1935                                                         |    |    |    |    |    |    |    |            1935
                                                              ----     |    |    |    |    |    |____ ____
                                                                       |    |1230|    |    |    |WINX|WWDC|
3/29                                                                   | 980|1260|    |    |1500|1310|1420|  3/29
1941                                                                   |    |    |    |    |    |1340|1450|  1941
                                                                       |    |    |    |    |WTOP|    |    |
1945                                                                   |    |    |    |    |    |    |    |  1945
                                                                       |    |    |    |    |    |    |    |
1950                                                                   |    |WWDC|    |    |    |WOOK|WOL |  1950
                                                                       |    |    |    |    |    |    |    |
1960                                                                   |    |    |    |    |    |    |    |  1960
                                                                       |    |    |    |    |    |    |    |
1970                                                                   |    |    |    |    |    |    |    |  1970
                                                                       |    |    |    |    |    |WFAN|    |
1980                                                                   |    |    |    |    |    |WYCB|    |  1980
                                                                       |WWRC|    |    |    |    |    |    |
1990                                                                   |    |    |    |    |    |    |    |  1990
                                                                       |    |    |    |    |    |    |    |
                                                                       |    |    |    |    |    |    |    |
1995                                                                   |    |    |    |    |    |    |    |  1995
                                                                       |    |    |    |    |    |    |    |
                                                                       |WTEM|WGAY|    |    |    |    |    |
2000                                                                   |    |    |    |    |    |    |    |  2000
                                                                       |    |WWRC|    |    |    |    |    |
                                                                       |    |    |    |    |    |    |    |
2005                                                                   |    |    |    |    |WTWP|    |    |  2005
                                                                       |    |    |    |    |WWWT|    |    |
                                                                       |    |    |    |    |WFED|    |    |
2010                                                                   |    |    |    |    |    |    |    |  2010
                                                                       |    |    |    |    |    |    |    |
2016                                                                   |    |    |    |    |    |    |    |  2016

        1    2    3    4    5    6    7    8    9    10   11   12   13   14   15   16   17   18   19   20

Part II: Stations first authorized after 1941:

        21   22   23   24   25   26   27   28   29   30   31   32   33   34   35   36   37   38   39   40   41   42   43   44   45
       ____ ____ ____ ____ ____ ____
1945  |WPIK|WANN|WARL|WASL|WGAY|WQQW|____ ____ ____                                                                                  1945
      | 730|1190| 780| 810|1050| 570|WBCC|WEAM|WOOK|____ ____
1950  |    |    |    |    |    |WGMS|1120|1390|1590|WFAX|WNAV|____ ____ ____                                                         1950
      |    |    |    |WABW|    |    |WUST|    |WINX|1220|1430|WDON|WPGC|WFCR|---- ____ ____
1960  |    |    |WAVA|WIPA|WQMR|    |    |    |1600|    |    |1540|1580|WEEL|WPRW|WAGE|WQVA|---- ____ ____ ____                      1960
      |    |    |    |WYRE|    |    |    |    |    |    |    |    |    |1310|1460|1290|1530|WHMC|WLMD|WHRN|WXLN|
1970  |    |    |    |    |WGAY|    |    |    |    |    |    |    |    |    |    |    |    |1150| 900|1440| 950|                     1970
      |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |WPWC|    |    |WOHN|WCTN|
1980  |WPKX|    |WABS|    |    |    |    |    |    |    |    |WMDO|    |    |    |    |    |    |    |WVBK|    |____                 1980
      |WRMR|    |    |    |WNTR|    |    |WMZQ|    |    |    |    |    |WDCT|    |1200|1480|WJOK|WILC|WRHX|    |WBZE|____ ____
1990  |WPKX|    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |WMTG|    |    |    |1030|WDAW|WREH|      1990
      |WCXR|    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |WMET|    |    |    |WNTL|1530| 700|
      |WCPT|    |    |    |WKDL|WTEM|    |    |    |    |    |    |    |    |WKDV|    |    |    |    |    |    |    |----|----|
1995  |WBZS|    |    |    |    |    |    |WZHF|    |    |    |    |    |    |    |    |    |    |    |____|    |    |                1995
      |    |    |    |    |    |    |    |WVPA|    |    |    |    |    |    |    |    |    |    |    |    |    |    |           
      |    |WBIS|    |    |    |WWRC|    |WZHF|WNNY|    |    |WACA|    |    |    |    |    |    |    |    |    |WWGB|           
2000  |WKDL|    |    |    |WPLC|    |    |    |WKDM|    |    |    |    |    |    |    |    |    |    |    |    |    |                2000
      |    |    |    |    |    |WTNT|    |    |WLXE|    |    |    |    |    |    |    |    |    |    |    |    |    |           
      |    |    |    |    |WFED|    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |
2005  |    |    |WAVA|    |    |    |    |    |    |    |    |    |    |    |    |    |    |1160|    |    |    |    |          ____  2005
      |WXTR|    |    |    |WTOP|    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |         |WURA|
      |    |    |    |    |WZAA|    |    |    |    |    |    |    |WHFS|    |    |    |    |    |    |    |    |    |         | 920|
2010  |WTNT|WCRW|    |    |WTOP|WSPZ|    |    |    |    |    |    |WNEW|    |    |1190|    |    |    |    |    |    |         |    | 2010
      |    |----|    |    |WBQH|    |    |    |    |    |    |    |WJFK|    |    |WCRW|    |    |    |    |    |    |         |    | 
2016  |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |         |    | 2016

        21   22   23   24   25   26   27   28   29   30   31   32   33   34   35   36   37   38   39   40   41   42   43   44   45