The flagship application
RF Navigator
Full engineering studies in the browser: FM translators, LPFM stations and second-adjacent waivers, full-power FM, AM and TV, with every contour on real terrain and the FCC exhibits ready to file.
From Nexus Broadcast
Broadcast RF engineering, in the browser
RF Workbench brings FCC data, coverage and interference studies, and focused engineering applications together in one place, for AM, FM, LPFM, translator and TV work. Start with the free tools below; take the full study to RF Navigator.
Engineers who file
Nexus Broadcast
The team behind RF Workbench engineers and files FCC applications for AM, FM, LPFM, translator and TV stations: new stations, moves, upgrades, translators and renewals.
One platform, focused applications
RF Workbench isn't one screen that tries to do everything. It is the shared foundation under a set of focused applications, each built for a specific broadcast engineering job, all working from the same data and the same calculations.
What it is built to do
- Keep FCC and engineering data organized and current
- Cut out repetitive database and spreadsheet work
- Make technical comparisons easy to review
- Support repeatable, auditable engineering work
- Grow beyond FM translators without leaving the tools already built behind
Nothing to install
RF Workbench runs in a modern web browser. Data and engineering updates arrive for everyone at once, so nobody keeps a desktop installation up to date.
Free tools
Free, no sign-up. Quick answers from the FCC's own data, on the same calculations as the full applications.
FCC news & filings
FCC Actions & Alerts
Start the day knowing what the Commission did: grants, dismissals and new filings for every broadcast service, with an email when one of yours moves.
Open FCC Actions & AlertsFCC Federal Register
Rule changes and NPRMs that touch broadcasting, with the comment and reply dates you need for the calendar.
Open FCC Federal RegisterFCC Docket Filings
Follow a proceeding without refreshing ECFS: the newest comments, replies and ex partes in any docket.
Open FCC Docket FilingsFiling Windows
Track every application in a window to grant or dismissal, and screen all twenty reserved-band channels at a site before an NCE translator window opens.
Open Filing Window TrackerOpen NCE Translator Prequal
License Renewal Deadlines
Plan the renewal cycle: expiration, filing deadline, on-air notice schedule and petition date for any state, with weekend and holiday rollovers already applied.
Open License Renewal DeadlinesFCC Filing Fees
The fee and payment type code for each application, straight from the current fee schedule, and when a noncommercial exemption applies.
Open FCC Filing FeesAlaska Class D FM
Screen all 100 FM channels for a new Alaska Class D at a site, with the contour margins to every station that matters.
Open Alaska Class D FMLP-250
The 250-watt LPFM petition at a glance, and the service contour an LPFM would gain at the proposed power for its height.
Open LP-250 (250-watt LPFM)Stations & call signs
Station Lookup
One page per facility: current authorization, technical parameters, pending applications and recent Commission actions.
Open Station LookupCall Sign Check
Clear a call sign before filing: who holds it, whether it was just released, and how the call sign rules apply.
Open Call Sign CheckSpare Call Signs
Every unassigned four-letter K and W call, by prefix, for clients still choosing.
Open Spare Call SignsCall Sign Activity
Who changed calls, which new stations got their first, and which were deleted, filtered by state and service.
Open Call Sign ActivityPending FM Applications
The FM-band workload still in front of the Commission: new stations, changes, covers, STAs and transactions, by state.
Open Pending FM ApplicationsLPFM Directory
Every LPFM license and permit with its licensee, frequency, power, height and expiration, by state.
Open LPFM DirectoryLPFM Self-Inspection
Walk an LPFM through an inspection before the FCC does, item by item, with the rule behind each check.
Open LPFM Self-InspectionRadioDNS
Verify a station's hybrid radio setup the way a receiver does, from DNS lookup to logos and streams.
Open RadioDNS CheckOpen RadioDNS Stations
Engineering
HAAT Calculator
HAAT on the eight standard radials from 3 to 16 km, site elevation, and the class maximum ERP at that height.
Open HAAT CalculatorPropagation & Interference
F(50,50), F(50,10) and F(50,90) distances and field strengths, land mobile curves, and desired-to-undesired ratios at a listener.
Open Propagation CurvesOpen Land Mobile Curves
Open U/D Ratio Calculator
Towers
Registered structures around a site, and whether a new or taller tower needs FAA notice near airports and heliports.
Open Tower FinderOpen Tower FAA Check
NAD27/NAD83 Converter
Move legacy NAD27 coordinates into NAD83 for a filing, with the same shift NOAA uses.
Open NAD27/NAD83 ConverterFM RF Exposure
Ground-level power density from one or more FM antennas on a tower, compared with the occupational and general public limits.
Open FM RF ExposureSite Profile
The paperwork facts for a site: county, census geography, elevation and distance to the borders.
Open Site ProfilePart 15 Broadcasting
Check an unlicensed AM or FM transmitter against the field strength, power and antenna limits before it goes on the air.
Open Part 15 BroadcastingWeather Alerts
Active Weather Service alerts by state with their EAS event codes, to compare against what your EAS decoder logged.
Open Weather Alerts