Hi Pete,
Good SMA connectors are very reliable. They are used extensively in
microwave test equipment as well as military and spaceflight hardware.
The torque spec is typically between 5 to 8 in-lbs. If you don't have a
calibrated torque wrench you can snug them up with a 5/16 open-end
wrench. Finger tight is okay for a quick and dirty measurement, but for
anything where you want stability over time they need to be tightened
with a wrench. This is especially true if the cable in question gets
twisted or moved in such a way that it can transmit torque into the
connector. That will loosen a hand tight connector and sometimes even a
torqued connector.
73, Mike W4EF.......
On 12/4/2022 6:05 AM, Pete Smith N4ZR wrote:
I'm not sure if this is the right place or not, but thought I'd ask
because this is at least a feedline question.
I have a number of SMA connectors in areas of my station like my RBN
SDR and my N1MM Spectrum Display. It seems like every few weeks I
start running into problems, and have to go through and retighten them
to get rid of intermittent signal losses. Is there anything that can
be done to secure them better?
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