Wireless glitch

Hello:

I have installed a ImmersionRC 5.8 600mw system. With the antennas that look like nails with big heads. But sometimes i have some glitch that I loose the signal for less than a second, but it comes back immediately. My issue is that if I want to have live feed, will see these glitch. Are this normal or I need better antennas. They are Fat Sharks antennas. Do I need better antennas??

Edgar
 

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