I understand that Wi-Fi transmits on 2.4 GHz or 5 GHz whereas local ham repeaters transmit around 147 MHz or 450 MHz. What differences would be needed in antennas tuning into either of these frequencies, to account for the difference in frequencies, either Wi-Fi or the ham repeaters?
For example, let's say I'm getting or building a Yagi antenna to pick up a distant Wi-Fi signal better, and I also want a Yagi antenna to better listen to (even better if also transmit) a distant ham repeater station. Could I use the same Yagi antenna for both purposes, or if not, how should the two Yagi antennas differ to best work with the different purposes?
In that example, let's say for Wi-Fi I'd plug the antenna into a USB wireless adaptor in a PC, whereas for the ham repeaters I'd plug the antenna into a transceiver, e.g. a simple Baofeng HT.