Using external antennae hides networks

After adding “dtparam=ant2” to my /boot/config.txt file I have faster wifi but I can no longer scan for networks.

I still automatically connect to networks configured in my wpa_supplicant.conf but i do not see them listed in scans on the taskbar or using iwlist.

If I switch back to using the internal antennae I can scan fine.

Has anybody else experienced this or have a suggestion? Country code has been set.

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