I setup a connection like what you are looking for with 2 MR74's with panel antennas. It has worked great for about 2 years without any issues. I do have line of sight between the 2 buildings and a distance of about 1/4 mile. It looks like you may be able to accomplish this with the MR76. https://documentation.meraki.com/MR/MR_Overview_and_Specifications/MR76_Datasheet
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