Excluding frequencies

Coord has three kinds of exclusion — single frequencies per zone, blocked ranges per site, and a scan-data threshold — each managed in a different place.

All three keep future calculations from proposing frequencies you can’t use. They differ in scope and shape:

	What it blocks	Scope	Where to manage it
Frequency Exclusions	Specific single frequencies (e.g. a house frequency at 512.300 MHz)	The current zone	The Frequency Exclusions button in the zone toolbar — see Excluding single frequencies
Range Exclusions	Whole ranges (e.g. 608–614 MHz)	The whole site — every zone	The Exclusion Ranges button in the zone toolbar — see Excluding a frequency range
Exclusion Threshold	Anywhere the zone’s scan data measures above a dBm threshold	Site-wide setting, evaluated against each zone’s displayed scans	The Exclusion threshold control in the calculation area — see Exclusion threshold and scan data

TV channels are a related mechanism with their own page: active broadcast channels block their full range site-wide. See Enabling TV channels.

Tip

Exclusions can also be managed straight from the spectrum plot: click a frequency and choose Exclude in the tooltip to add a single-frequency exclusion, and click a range’s label on the plot to toggle that range exclusion on or off.

For removing exclusions of either kind, see Removing frequencies from exclusion. For the typical “block the house frequencies before calculating” workflow, see the knowledge-base guide Avoiding house frequencies.