Bay is 8mm and the top plate is 1mm tall. 9mm together (duh).

Fits r9mm and the T antenna for the Frsky R9M.

Use a small piece of 3m foam tape to keep the receiver in place. Also make sure that there are no sharp bends in your antenna wire to keep signal integrity. I have gotten some impressive distances with this setup.

Print at whatever settings you want. I printed at .2mm with 20% infill.

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