So .. yes, then. I would also need to remove the resistor on the Onion Pro, which is unfortunate (I won't be removing it from mine). Still, thanks for your response. Regards, -- Yvan p.s. The article you referenced is specific to the Onion 2 btw .. not the Onion Pro.

@baralong Here's what I did for an antenna: https://www.digikey.com/product-detail/en/pulselarsen-antennas/RO2408NF/553-2621-ND/3025771 That antenna would surely be in the deep deep overkill zone for physical size and cost, but it's nice for my application (wave height sensor on an in-water buoy). On the other hand, it's 8dBi gain is awesome for a "permanently" installed station. The lesson here is go to digikey.com (or Mouse, Newark, etc., etc.) and begin searching for parts based on what YOU need. Here is what I used to transition from the O2+ to the project enclosure bulkhead: https://www.taoglas.com/wp-content/uploads/2017/07/CAB.721-1.pdf. take care! Bill