Features for two-way radio dealers, integrators, and FCC license holders
Everything a senior engineer would bring to the bench.
One product: cited answers from your own library, the engineering math done deterministically, the FCC licensing database on tap, and the controls a working operation needs. Pick a part to see it in full, or walk the product below, page by page, in the order the app lists them.
Answers you can trust
Answers from your own manuals, cited to the page.
Your service manuals, procedures and bulletins become a library every tech can ask. Every answer names the document and page, and it says so when the library does not cover the question.
Cited answers in full
Coverage and propagation
Coverage over real terrain, in a report you can hand over.
LMR area studies, contours, path studies, TSB-88 tile reliability, receive-site surveys, microwave paths and sectored CBRS sites, over USGS terrain at your actual site.
Coverage studies in full
Bench math, done right
45 deterministic calculators, and five free ones.
Site intermod, short spacing, AM protection, shared-site exposure and desense, Fresnel zones, coax loss, ERP and the small stuff. Five of them run free on this site.
RF calculators in full
FCC search
The FCC's license and tower records, on a map.
A full, weekly-refreshed copy of ULS and the antenna structure register, with leases and market licenses included, searchable by callsign, licensee, FRN, frequency or area.
FCC license search in full
Proactive monitoring
Renewals, buildouts and tower changes, flagged months ahead.
Watch lists for licenses and towers, lighting-outage alerts from the FAA feed, and area watches for new towers and licenses near you.
License monitoring in full
Security
Your library stays yours.
Per-operation isolation tested on every code change, two-factor sign-in, inference under no-logging policies, and export any time.
How data is handled
The tour
Engineering, page by page.
The bench half of the product: cited answers from your own library, every study on a map, the screens a coordinator runs, and the math done deterministically.
Engineering / 01
Chat
Ask the question the way you would ask a senior engineer. Every factual answer names the document and page it came from, and when the library does not cover it, the answer says so instead of guessing.
How cited answers workEngineering / 02
Documents
Your service manuals, alignment procedures and bulletins beside a shared reference library of standards and government documents. Upload a stack at once, forward a bulletin to your private ingest address, and open any source to the cited page.
Your library and the shared corpusEngineering / 03
Calculators
Link budgets, Fresnel clearance, coax loss, ERP, receiver sensitivity, antenna isolation, ground rods, RF exposure, and more, each stating the bounds of the model it used. The math is deterministic, so it is checked and repeatable.
All the calculatorsEngineering / 04
Propagation maps
LMR area studies for one site or a strongest-site composite of several, terrain-shaped contours, TSB-88 tile reliability, point-to-point paths, receive-site surveys, microwave links and sectored CBRS sites, all over real USGS terrain at your actual site, all printing as a report under your name and exporting as a KMZ for Google Earth.
Every study, in depthEngineering / 05
Intermod study
Load every transmitter licensed at a site from the FCC copy, add the broadcast stations ULS cannot see and the frequencies you are proposing, and get every third and fifth order product that lands within your guard band of a receiver you need to protect.
Intermod and the other site screensEngineering / 06
Short-spacing study
The study a coordinator runs before anyone files. Load the license at the site or enter the proposed station, and the study applies the band's rule, draws every incumbent's contours, and names each station that passes, fails, or needs a letter of concurrence.
Short-spacing and contour overlapEngineering / 07
TOWAIR/AM screening
Two pre-construction screens for a proposed structure: whether FAA notification is triggered under Part 77, with the controlling facility named, and whether any AM station inside the 47 CFR 1.30002 distance has to be notified before you build.
AM protection and FAA screeningEngineering / 08
Channel search
Pick a site and a band segment and see which Part 90 channels look available, which need adjacent-channel review, and which are blocked co-channel, each with the nearest concern named. The same page runs Part 101 microwave and the paging plans.
Channel search and the FCC data behind itEngineering / 09
Reports
Every study and search report generated for your operation, in one list. PDFs and Google Earth KMZ files are regenerated server-side from the exact study inputs, so a report can be edited and rerun against today's FCC data and terrain, and downloaded again.
What a report looks likeThe tour, continued
Search and watch, page by page.
The licensing half: a full, weekly-refreshed copy of FCC ULS and the antenna structure register, searchable on a map, and watch lists that tell you when something changes.
Search and watch / 01
ULS license search
Search by callsign, licensee, FRN, frequency or map area across every land mobile, microwave, paging and broadcast auxiliary license, leases and market licenses included, and plot the results around a site.
FCC search in fullSearch and watch / 02
ULS application search
Recent and pending license applications by callsign, applicant, FRN, file number or location, filtered by status, purpose and service, so you see what is being filed around your sites before it is granted.
FCC search in fullSearch and watch / 03
ASR registration search
The antenna structure register by registration number, owner, FAA study number or location. Turn on the constructed-tower layer and every built structure nearby is on the map, with the ones under an active FAA NOTAM in orange. Each structure opens on its own page with its coordinates, heights, lighting and the licenses on it.
Towers and NOTAMsSearch and watch / 04
ASR application search
Filed antenna-structure applications by file number, ASR number, applicant or location: new registrations, modifications, notifications and ownership changes, each a click from the FCC record and from your watch list.
FCC search in fullSearch and watch / 05
ULS license watch list
Your licenses and your customers' on one list, with renewal alerts at 180, 90 and 30 days, buildout deadlines watched the same way, and a note when a license changes status or frequency.
License monitoring in fullSearch and watch / 06
ASR watch list
The towers you own or depend on. Add a structure by ASR number or owner FRN and hear about it when the owner, status or height changes, when an application is filed against it, or when the FAA publishes a lighting-outage NOTAM for it.
Tower watching and NOTAMsSearch and watch / 07
ULS area watch lists
Draw a radius or a polygon, optionally narrow it to a frequency band, and get an alert when a new license is granted or an application is filed inside it, so a new neighbor on your channel is not a surprise.
Area watchesSearch and watch / 08
ASR area watch lists
The same for towers: an area you care about, and a heads-up after each weekly FCC refresh when a new structure is applied for or granted inside it, with constructed towers and NOTAMs on the map.
Area watchesBuilt for the operation
Made for a working bench and a real team.
Fast to use with your hands full, and easy for an owner to run without living in the settings.
Press-and-hold voice input
Hold the mic button in the chat bar and talk. It works in every browser, so a tech with a probe in one hand can still ask a question.
Optional open-web fallback
For general or background questions, an optional open-web fallback can be turned on. It is clearly labeled and never used to answer a spec or a procedure.
Your logo on every report
Upload your logo once and it prints at the top of every study report, so what you hand a customer looks like it came from you. If the logo already carries your name, tell Sentinel RF and it leaves the printed name off rather than saying it twice.
Hand a chat to a teammate
Share a conversation with one person by name, or with the whole operation. A named share is a handoff, so they get a bell notification and an email with a link to the chat; a share to everyone lands in each seat's bell without the email. They read the thread, its citations, and its attachments, and only the owner can add to it. Chats stay inside your operation; nothing can be shared across operations.
Two-factor, and a machine you trust
Each seat can turn on an authenticator app, a passkey or recovery codes from their own profile, and admin seats are required to have one. Any of the three gets you in, so the person who leaves their phone at home is not locked out of their own operation. Tick remember me on a machine you own and it stays signed in for thirty days instead of asking again every day; leave it unticked on a shared bench computer and the session ends in twenty four hours. One active session per person, so signing in somewhere else ends the old one.
Multi-seat teams with roles
Owner, admin, and member roles keep control where it belongs. Each person signs in with their own seat; credentials are never shared.
Self-serve billing and seats
Add or remove seats from the admin console with prorated changes previewed before you confirm, and manage billing from a self-serve portal.
Usage and audit visibility
See usage by seat and an audit log of who did what, so an owner can run the operation instead of running the software.
Per-operation isolation and export
Your documents stay isolated to your operation and are never used to answer another operation's questions. Export your data any time from the admin console.
Monitored and backed up
The platform is actively monitored for health and reliability, with automated offsite backups, so your library and history stay safe.
Just the licensing side
Hold FCC licenses but do not service radios?
The FCC search and monitoring are sold on their own as Search & Watch, from $29 a month, for municipalities, utilities, public-safety agencies, schools and hospitals.
See it on your own manuals.
Bring a service manual and a real question from your bench. If it does not earn its seat in the first fifteen minutes, we will tell you.