North American FM Station Database Help

This chart shows what countries are included in this database and their country codes.

Here is the list of Mexican states:

Canadian Provinces:


There are hundreds of formats listed in the WTFDA database. Here you will find a listing of the most common formats. Enter them exactly as you see them in the format field of the database. The most common searches are by frequency & format and state & format.




Search on one field or combination of fields to narrow your search.  Press the search button to begin and output your results.

Results are displayed below this display header. Ten fields are searchable. Each field (column) is sortable (except for remarks). Sometimes using a combination of searching and sorting will yield the results you are looking for.

The Orig field - This field is used mostly for translators. It indicates the station originating the programming. That station could be either an AM station, another FM station or the HD2 or HD3 of an existing HD FM station. These originators could change at a moment's notice and we try to keep them up to date.

Use the language pull down menu to search for stations broadcasting in languages other than English.  Use the country pull down menu to select the country.

RBDS (Radio Broadcast Data System). The United States uses the RBDS system, not RDS as in other parts of the world.  RBDS info in this database consists of the following fields: PI (Program ID)code, PS (Program service) info, Radiotext and Pty (program type). Of most interest to FM Dxers is the PI, since in almost all cases, the transmitted code can be easily converted to the station's callsign. The PS is also valuable, although less so than previously since many stations now transmit the song title and artist with sometimes just a passing reference to their slogan. PI and Pty decode much faster than either PS or radiotext. To find a station from its PI code, the PI code MUST be entered in upper case or the result will be nothing. RDS Pty codes differ slightly from RBDS Pty codes. Pty codes received from stations outside the US may look different if decoded on a radio using the RBDS system.

The Mode field has four options: HD indicates the station broadcasts in hybrid digital mode, M indicates monaural transmission, Silent indicates that the station is not on the air, and CP indicates a new station with a construction permit which may or may not be on the air.

Longitude (W) and latitude (N)are shown in degrees, minutes and seconds. Thus 75-17-26 is 75 degrees, 17 minutes and 26 seconds. US territories west of Hawaii are not included in this database.

NO LOGIN IS NEEDED FOR THIS DATABASE.  Login is for the use of editors only.



RBDS PI Code to Callsign Converter (for USA)

This is Doug Smith's original program and will work with US callsigns and some Canadian callsigns.
It will not work outside of North America.

PI to Callsign

Callsign toPI

Distance Calculator from Your Location to Any Location on the WTFDA FM Station Database

1. Click on the map graphic above. Find your location. Write down the co-ordinates in DD-MM-SS format and save them.

2. Click on the NOAA logo above. Enter your co-ordinates on the Lat1/Long1 field (but first change the dashes to colons (xx-xx-xx would be entered as xx:xx:xx)!
3. Next enter the co-ordinates of the station you wish to find in the Lat2/Long2 fields (again, changing dashes to colons when entering).
Once you are sure the co-ordinates were entered correctly, press the Compute button and the results will output in the Distance field.
Your output can be in kilometers, nautical miles or statute miles. A statute mile is 5,280 feet. Nautical miles are slightly longer and allow for earth curvature.

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Last updated February 12, 2018

 Group: TV and FM DXing