Easy LPFM Radio Licensing
Get Adobe Flash player

Low Power FM Broadcast Radio Stations

The Low Power FM (LPFM) radio service, which was created by the Commission in January 2000. These stations are authorized for noncommercial educational broadcasting only (no commercial operation) and operate with an effective radiated power (ERP) of 100 watts (0.1 kilowatts) or less, with maximum facilities of 100 watts ERP at 30 meters (100 feet) antenna height above average terrain (HAAT). The approximate service range of a 100 watt LPFM station is 5.6 kilometers (3.5 miles radius). LPFM stations are not protected from interference that may be received from other classes of FM stations. A construction permit is required before a LPFM station can be constructed or operated.

LPFM radio stations are available to noncommercial educational entities and public safety and transportation organizations, but are not available to individuals or for commercial operations. Current broadcast licensees with interests in other media (broadcast or newspapers) are not eligible to obtain LPFM stations.

LPFM radio stations must protect authorized radio broadcast stations on the same channel or frequency (cochannel), as well as broadcast stations on first, second, or third-adjacent channels above or below the LPFM station’s frequency. This protection is accomplished through the use of minimum distance separation requirements, which are set forth in 47 CFR 73.807


LPFM Broadcaster’s Discussion Group

The latest information on LPFM grants, Dismissals, and more. All delivered daily to your email!  In addition you’ll receive our periodic newsletter.  Join in on the discussions with this interactive newsletter, or just sit back and keep informed.   Whether you are pro-LPFM or not, you’ll want to be on this list.

Click Here to Subscribe, it’s Free!

2 Responses to Low Power FM Broadcast Radio Stations

  • I live in an area small town no real tall building and the terrain is pretty flat. The town is surrounded by farm land. I Believe a 30 meter HAAT tower with an ERP of 100 watts could go much farther than 3.5 miles. Maybe 8-10 miles. Does the FCC require a LPFM station to turn down till they are only reaching 3.5 miles or can you stay at full power?

    • The 3.5 miles refers to the city grad 60 Dbu contour. This is a measurement of signal strength at the given distance. The signal continues on with decreased signal strength, ie 50 Dbu, 40 Dbu. etc. On a clear frequency the LPFM might be heard 25 miles depending on terrain and interference level. After you receive permission to build and build the station, an engineer would determine the proper power level of your transmitter. This would depend on the type of antenna,coax type and length, height and average terrain. Once this has been calculated the TPO cannot be changed unless you change something in the system, ie different antenna, longer, shorter or different coax type. The 60 DBU contour is considered city grade as anything within this contour should be very strong with ability to penetrate buildings.

Subscribe!

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 19,166 other subscribers

  • Broadcasters Flock to Malta for International Radio Festival
    VALLETTA, Malta — Radio stations and networks from around the globe will be broadcasting live from the island of Malta Oct. 31 – Nov. 4, as part of the ninth annual International Radio Festival. Their remote broadcasts to IRF delegates and audiences back home are a key part of the IRF, the global ...
  • Community Broadcaster: Can Civil Pivot to Community Media?
    The author is membership program director of the National Federation of Community Broadcasters. NFCB commentaries are featured regularly at www.radioworld.com. This week, the journalism startup Civil failed in its efforts to raise $8 million in cryptocurrency. And while this effort did not pan out, ...
  • Quality Robbing at the Radio Factory
    The author is U.S. sales manager-radio processing sales for The Telos Alliance. I gave a fun talk for a bunch of engineers in Los Angeles recently and wanted to turn it into a written piece. There are a number of common factors that tend to diminish audio quality in radio facilities. It’s just my ...
  • All-Digital AM Radio Starts Here
    Radio World’s free eBook series has been a huge hit. In our newest edition, just published, one of the highlights is an interview with Dave Kolesar. He’s the engineer at Hubbard Radio who turned off the analog signal of AM radio station WWFD in Frederick, Md., for a year to broadcast in all-digital ...
  • 2018 Media Credit Seminar Agenda Announced
    Sessions addressing the digital media marketplace, demographic changes affecting the top U.S. Metro Markets, global business intelligence and the legal considerations involved in electronic business transactions and social media will be featured at the upcoming 2018 Media Credit Seminar. ...
  • Nautel Names Wilson New Western Region Sales Manager
    Transmitter manufacturer Nautel has added Jeff Wilson as a regional sales manager based in Quincy, Ill. He will manage sales for the western United States, replacing Ellis Terry, who will retire later in 2018. Prior to this appointment, Wilson most recently worked as director of sales and Western ...
  • Jeff Wilson Joins Nautel's US Sales Team
    Hackett's Cove, Nova Scotia -- Experienced broadcast professional Jeff Wilson has joined Nautel as Regional Sales Manager. Based in his home city of Quincy, Illinois, Jeff will manage Nautel's Western US sales territory. This territory has been served since 2012 by Ellis Terry, who is retiring from ...
  • iHeart Names EVP of Event and Experiential Partnerships
    iHeartMedia has tapped Greg Millard to serve as executive vice president of event and experiential partnerships. The broadcaster also says Cristina Mayer has been named marketing director for the Washington–Baltimore cluster. Millard will report to iHeartMedia’s President of National Sales, ...
  • Dealing With Repack — Moving an FM Cluster to a Temporary Site
    The incentive auction that ended in 2017 was bound to have consequences for the FM stations on Los Angeles’ Mt. Wilson. TV and radio share tower space there, often in close quarters. It soon became clear that this would be especially true in the vicinity of the “Post Office” site, where iHeartMedia ...
  • Try Cloning Your Computers to Save Time
    Hal Kneller, engineering consultant with Solmart Media, writes that he has maintained a clone (not an image) of all the hard drives in critical systems at the radio stations he consults over the last few years. This way, when there is a crash, there is an instantly bootable drive to slip in. Once ...
Archives
Contact