Several antenna types, notably Yagis and helical antennas, are only effective at one radio frequency. At the moment, an antenna of this type configured to operate in the VHF or UHF band can be switched to higher frequency bands, where they will achieve unrealistically high gain values.
Being able to restrict an antenna to a single band or set of bands would allow for more realistic configuration of Yagi and Helical type antennas.
Just an idle thought that occurred to me.
Several antenna types, notably Yagis and helical antennas, are only effective at one radio frequency. At the moment, an antenna of this type configured to operate in the VHF or UHF band can be switched to higher frequency bands, where they will achieve unrealistically high gain values.
Being able to restrict an antenna to a single band or set of bands would allow for more realistic configuration of Yagi and Helical type antennas.