Pick your mics, IEMs and intercoms, enter the local TV channels, and get an intermod-free frequency plan in milliseconds. Built on your country’s band plan, 100% offline, no account. iOS & Android.
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Frequency coordination usually means a desktop tool, a list of TV transmitters and a regulator’s PDF. Invecter HF puts it in your pocket: choose your gear by brand, series and band, exclude the local TV channels, and the engine assigns every channel clear of intermodulation, inside the bands your country allows.
A spectrum strip lays out your carriers, the TV channels, your exclusions and where intermod products pile up. Tap a carrier for its tuning range and the three nearest intermod products, with the arithmetic behind each one.
The engine checks every pair and every trio of transmitters for third-order products, every pair for fifth-order, and applies the spacings each manufacturer requires. Lock the frequencies you can’t move: the plan is built around them. 24 channels in 32 ms on an iPhone 13.
Band plans for France, the United States, the United Kingdom, Germany, Switzerland, Belgium, Japan and Australia, each drawn from the regulator’s own texts: license-free, licensed and prohibited bands, power limits as the regulator writes them, and each country’s TV channel grid.
Export the plan as a PDF with its alerts, exclusions, spectrum strip and the assumptions behind it. Share the project file: it opens in Invecter HF on iPhone and Android alike.
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