Supporting both SMA and BNC footprints makes a lot of sense to me. Use right angle, PCB mount connectors. Not the edge mount SMA's like those used on the nano. I'd expect that having the connectors br

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I admit I voted for SMA, mainly on the basis of my experience with those threaded plastic BNC connectors, UGH! I'm more in favor of a bulkhead mounted connector with a jumper to the board. If the the

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I'm not pro or con on this but it is interesting to note that Elecraft uses SMA connectors on their 2/4 meter transverter for the KX3. I'm well past 50 cycles with no trouble on mine but now sufficien

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BNC connectors without the plastic housing exist. I have a mini oscilloscope, a DSO138, that has one. Here are links to examples: https://www.digikey.com/product-detail/en/molex/0731000105/WM5524-ND/1

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I would say prefer board mount BNC .....but find one which does not have the plastic housing (I believe they have those). If you are really an industrious builder with all 5 fingers on each hand, cut

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True, but Tyco Electronics also specifies only 50 cycles for their gold plated center pin BNC connectors. https://docs.rs-online.com/616e/0900766b81409ff0.pdf 73 de LA9XKA - Per

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SMA connectors have a limited life span measured in only 100's of mating cycles. Check the data sheets for Ampehnol, Pasternack, (etc) parts. The inexpensive SMA's from Asia quite likely are even less

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Searching online mating cycles seems to be between 100 and 500 times. To reach the max number of mating cycles, you would need to clean the SMA connector and use a torque wrench... I still prefer BNC.

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At one stage in my professional life I worked in a components factory which made SMA, TNC, SMB, BNC and you name it. We also made semi-rigid and flexible cable assemblies for space and general aviatio

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Then I say "VOTE BNC!" 73 Hans G0UPL http://qrp-labs.com

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Mostly just torque issues - both over and under-torqueing. One gentleman broke the fingers that connect the SMA connector to the circuit board using too much torque. Even when a torque wrench is used,

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The SMA is only rated for 50 mate/demate cycles, and that is for the real gold plated versions. Quite a nice connector for applications that call for a very few disconnects, like inside equipment. The

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Hi Russ I have to admit to a preference for BNC. What kind of issues have they seen? 73 Hans G0UPL http://qrp-labs.com

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The NanoVNA group has been seeing some issues with SMA connectors. It's too bad TNC connectors aren't more prevalent in amateur equipment. I have some LMR cables with TNC connectors and they really ar

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Hans, any chance the connector location on the board could be etched to support both? A bnc -sized hole should work for SMA, other than for weather sealing perhaps. Keep up the good work :) Thanks, Sc

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A new poll has been created: On the proposed QCX-mini, do you prefer a BNC connector like on QCX, or an SMA connector? 1. BNC 2. SMA Vote Now Do not reply to this message to vote in the poll. You can

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