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Correct, that the connection is "direct" PCB to aluminium. Its only 4.6mm, from RF output on the PCB, to the antenna slot, so an antenna connector and cable probably won't fit.
Basically what i am trying to find is something like a PCB "spring", perhaps a shield finger, like these...
Hi all,
I Am currently working an a design, featuring an RFM22B 868MHz module, transmitting at upto 20dBm.
The PCB i am designing fits into two slots in a aluminum profile, and the in bottom i will mill a slot antenna at 164,3mm. (See attached photo)
Tests indicate a feedpoint at 1/20...
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