For municipalities, utilities, public-safety agencies, schools and hospitals
Never lose a license to a missed renewal.
Your radio system runs on FCC licenses, and each one ends on its expiration date unless a renewal was filed in time. Search & Watch keeps every date in front of you, months ahead: renewals, construction deadlines, and changes to the towers your system depends on.
$29 a month for 3 seats. No credit card to start.
Why the dates matter
The FCC does not send a reminder.
These are the rules the alerts are built around, as the Code of Federal Regulations states them.
47 CFR 1.949(a)
The renewal window is 90 days long.
A renewal can be filed no sooner than 90 days before the license expires and no later than the expiration date itself.
47 CFR 1.955(a)(1)
A license ends on its own.
Without a timely renewal, the authorization terminates automatically on its expiration date. There is no notice first and no action by the FCC.
47 CFR 90.155(a), 1.946(c) and (d)
New stations have a construction clock.
Most Part 90 stations must be placed in operation within twelve months of grant, and the licensee notifies the FCC within 15 days after the construction period ends. A station not placed in operation in time cancels automatically.
47 CFR 1.953(c) and (d)
Going quiet has a limit too.
Most site-based land mobile licenses, public safety included, terminate if operations are permanently discontinued, which the rule defines as 365 consecutive days without operating.
The whole timeline, with what a renewal asks you to certify, is in the renewal guide. This is a summary of the rules, not legal advice.
Search & Watch
What the plan does for you.
The FCC search and monitoring side of Sentinel RF, without the engineering tools a radio shop uses. Everything below is included.
Renewal alerts at 180, 90 and 30 days
Every license you watch is checked against each weekly FCC data refresh, with alerts in the app and by email, the first of them well before the 90-day renewal window opens.
Construction deadlines beside the renewals
An unfiled construction notification sits next to the renewal date, with alerts at 90 days, 30 days and overdue, because a missed one can end the license too.
Watch by FRN
Add your FCC Registration Number and every license filed under it joins the list, new ones included. Or add licenses one at a time, or import them from a spreadsheet.
The towers your system uses
Watch towers by ASR number or owner FRN and hear when one changes owner, status or height, or when an application is filed against its registration.
Tower lighting outages
The FAA's obstruction NOTAM feed is checked every twenty minutes, and you are told when a watched tower's lights go out and when the NOTAM is extended or cleared.
Area watches
Draw a radius or upload a boundary and hear about new towers, and new licenses near your frequencies, inside it.
The whole FCC database, searchable
Look up any license or tower by callsign, name, FRN, frequency or map area, without working through the FCC's own search pages.
Seats for the people who need the dates
Three seats are included, so the radio coordinator, the compliance lead and IT all see the same list. Additional seats are $25 a month.
One notification center
Every alert collects in one place in the app and arrives in your inbox, so nothing depends on one person remembering to check.
Pricing, in one line.
$29 per month
3 seats included, additional seats $25 per seat per month, 20% off with annual billing, and a 14-day trial with no credit card.
Questions license holders ask.
Does Sentinel RF file our renewals?
No. It tells you, and anyone else you give a seat, when each date is coming, months ahead, and it keeps telling you until the date passes. The renewal itself is filed in the FCC's licensing system by your organization or whoever already handles your FCC filings.
Our licenses are held under several department names.
Watch by FCC Registration Number (FRN) and every license filed under it joins the list, including new ones. One FRN often files under several names, and several FRNs can all call themselves the city, so the FRN lookup shows everything filed under a number before you decide what to watch.
How current is the data?
Licenses and towers come from the FCC's weekly data files, and every watched license is re-checked after each refresh. Tower lighting outages come from the FAA's obstruction NOTAM feed, pulled every twenty minutes.
Who can see our watch list?
Only the seats in your organization. Each organization's data is isolated from every other's.
Can we add the engineering tools later?
Yes. Move up to an Engineering plan any time from the billing portal and your watch lists come with you.
See every date on your own licenses.
Add your FRN and the watch list fills itself. If it does not earn its place in the first two weeks, let the trial lapse and you are never charged.