Skip to main content
Home

Main navigation

  • REC Home
  • Apply
    • REC Services Rate Card & Policies
    • LPFM Construction Completed
    • LPFM License Modification
    • New FM Booster Station
    • New Class D FM Station in Alaska
    • New Low Power FM (LPFM) Station
  • Initiatives
    • RM-11846: Rural NCE Stations
    • RM-11909: LP-250 / Simple 250
    • WIDE-FM
    • RM-11952: Translator Reform
    • RM-11843: 8 Meter Ham Band
    • PACE - LPFM Compliance
  • Services
  • Tools
    • Today's FCC Activity
    • Broadcast Data Query
    • Field strength curves
    • Runway slope
    • Tower finder
    • FM MODEL-RF Exposure Study
    • More tools
    • Developers - API
  • LPFM
    • Learn about LPFM
      • Basics of LPFM
      • Self Inspection Checklist
      • Underwriting Compliance Guide
      • Frequently Asked Questions
      • FCC Rules for LPFM
      • HD Radio for LPFM
      • Transmitters certified for LPFM
      • Interference from FM translators
      • RadioDNS for LPFM Stations
    • 2023 Window REC Client Portal
    • myLPFM - LPFM Station Management
    • LPFM Station Directory
    • Spare call signs
    • REC PACE Program
    • More about LPFM
  • Reference
    • Pending FCC Applications
    • FCC Filing Fees
    • Radio License Renewal Deadlines
    • FCC Record/FCC Reports
    • Pirate Radio Enforcement Data
    • Premises Info System (PREMIS)
    • ITU and other international documents
    • Recent FCC Callsign Activity
    • FCC Enforcement Actions
    • Federal Register
    • Recent CAP/Weather Alerts
    • Legal Unlicensed Broadcasting
    • More reference tools
  • LPFM Window
  • About
    • REC in the Media
    • Supporting REC's Efforts
    • Recommendations
    • FCC Filings and Presentations
    • Our Jingles
    • REC Radio History Project
    • Delmarva FM / Riverton Radio Project
    • J1 Radio / Japanese Broadcasting
    • Japan Earthquake Data
    • REC Systems Status
    • eLMS: Enhanced LMS Data Project
    • Open Data at REC
    • Our Objectives
  • Contact

Breadcrumb

  • Home

Operational Status

Michi on YouTube

Most popular

fcc.today - real time updates on application activity from the FCC Media Bureau.  fccdata.org - the internet's most comprehensive FCC database lookup tool.  myLPFM.com - Low Power FM channel search and station management tool.  REC Broadcast Services - professional LPFM and FM translator filing services. 

Other tools & info

  • Filing Window Tracking
  • Enforcement Actions
  • REC Advisory Letters
  • FAQ-Knowledge Base
  • U/D Ratio Calculator
  • Propagation Curves
  • Runway Slope/REC TOWAIR
  • Coordinate Conversion
  • PREMIS: Address Profile
  • Spare Call Sign List
  • FCC (commercial) filing fees
  • Class D FM stations in Alaska
  • ARRR: Pirate radio notices
  • Unlicensed broadcasting (part 15)
  • FMmap - broadcast atlas
  • Federal Register
  • Rate Card & Policies
  • REC system status
  • Server Status
  • Complete site index
Cirrus Streaming - Radio Streaming Services - Podcasting & On-demand - Mobile Apps - Advertising
Select FAQ Category:

FAQ: Why was my station only authorized a very low power?

This is due to your height above average terrain. When the FCC processes your application, they look at your location's elevation and antenna height above ground, then they make measurements at multiple points along 8 equally spaced radials to determine the elevations in each direction. The average heights of the points of these radials make up your height above average terrain (HAAT). If your HAAT is greater than 30 meters, your effective radiated power (ERP) is reduced to the level that is necessary to produce a service contour of 5.6 kilometers.

LPFM technical operations
LPFM station planning and construction
Thu, 05/14/2015 - 12:00

§ 73.811 LPFM power and antenna height requirements

§ 73.313 - Prediction of coverage

REC Essentials

  • FCC.TODAY
  • FCCdata.org
  • myLPFM Station Management
  • REC site map

The More You Know...

  • Unlicensed Broadcasting
  • Class D Stations for Alaska
  • Broadcasting in Japan
  • Our Jingles

Other REC sites

  • J1 Radio
  • REC Delmarva FM
  • Japan Earthquake Information
  • API for developers

But wait, there's more!

  • Join NFCB
  • Pacifica Network
  • LPFM Wiki
  • Report a bug with an REC system

Copyright © REC Networks - All Rights Reserved
EU cookie policy

Please show your support by using the Ko-Fi link at the bottom of the page. Thank you for supporting REC's efforts!