Whip antennas are an “Omni-directional antenna”. Omni-directional antennas “shine” their radio waves equally in all directions. It will radiate radio waves in all directions without bias, like an uncovered light bulb. These antennas do very well in tight neighborhood settings that have a lot of Wi-Fi congestion.
Directional antennas will better in an open area where there are minimal obstructions between you and the drone. Directional antennas radiate preferentially, choosing to partially or fully ignore coverage of an area behind them in favor of boosting the strength of the radio waves right in front of them. It will focus its beam in a single direction, gaining a significant range bonus, similar to a flashlight. They also need to be aimed at the drone at all times.
The ideal way to receive live video is to use both the directional antenna to get the maximum video in one direction. Then use an Omni-directional antenna when you move outside and behind the directional antenna. Covert Drones offers multiple options in both Omni-directional and Directional Antenna's. The Switch being the most diverse when looking for the ideal way to receive live video.