For me it's: FT8 - a weak signal mode that lets you make contacts around the world with not much power. From Canada, I've made contacts with Japan and Romania

For me it's: FT8 - a weak signal mode that lets you make contacts around the world with not much power. From Canada, I've made contacts with Japan and Romania on 10W of power. Satellites - the ISS has a repeater, so you can make VHF/UHF contacts with people in a huge footprint.