FreqSense

FreqSense plans the wireless frequencies for a show. Pick the region you are standing in and it draws the spectrum from 400 to 960 MHz: the region's TV-channel grid, the mobile bands, guard bands and what the region's rules allow. Pick your gear's band and it coordinates your channels, checks every row of the plan for spacing and intermod, and prints a coordination sheet.

FreqSense does not know which local TV transmitters are on air. Only a scan shows what is actually there in the room — bring one, from a scanner's CSV or from KlarFunk, and FreqSense blocks what it measured.

Who it is for

• FOH and monitor engineers coordinating mics and in-ears before the truck leaves.
• Freelance techs who meet a different brand of receiver every week.
• Touring crews crossing borders who need several countries' rules in one place.

What makes it different

• Vendor-neutral. It does not care who made your receivers — and it imports and exports Shure WWB and Sennheiser WSM plans.
• A plan check on every row. After every change the whole plan is checked for spacing, 3rd- and 5th-order intermod and rows in blocked spectrum; a row with a problem shows ⚠ with the reason. See The plan check.
• Mics and IEMs in one plan. Several bands side by side, each coordinated clean against the others, with backups per band.
• Eight spectrum regions, fourteen countries of rules. DE, UK, US, EU, FR, JP, AU and CA on the spectrum; the regulatory table adds AT, CH, NL, BE, IT and ES. Every band names its source, and where the order sets one, the date it runs out.
• Real scans. Drop in an RF Explorer, WWB or R&S FSH trace, or any two-column MHz / dBm file.
• Field notes built in. Six cards on antennas, squelch, intermod, batteries, workflow and regulations — also published at /rf-cheatsheet/field-notes.

Pages in this guide

• Getting started — a coordinated plan in five minutes.
• Find free windows and coordinate channels — free windows, coordinating channels, several bands, backups and the intermod calculator.
• The plan check — what the ⚠ on a row means and how to clear it.
• Import a scan — bring the venue's real RF into the plan.
• Export to WWB, WSM and paper — WWB, WSM, JSON, CSV and the printed sheet.
• FAQ and Troubleshooting.