"Deadright" concerning the above, CoastGuardJohn.
A “trade off” to be realized with nowadays consumers equipment, whilst the commercial (and even “older” not to say vintage and of course more expensive one) ties(d) connectors to the (metal) cabinets, housing the PCBs. Expecially “tiny” connectors (as are RBs “SMA" ones) suffer this problem if “confronted” with rather thick and stiff coaxial cables, (Ecoflex, Aircell etc.) acting as a “lever arm” on the connectors, soldered directly to the PCB.
Two ways to get around: prevent moving the receiver / cable assembly if even possible, thus limiting the above “lever arm behavior”.
Better: provide a short peace of “flexible” (thin) coaxial cable (“pigtail” by its nickname) with SMA male / female connectors between the (thick / stiff) feeder Coax and the receivers SMA input connector.
Karl
PS.: BTW, I've seen hundreds of thousands of SMA connectors in my "RF / MW life". Not one,
whose inner connectors "withdraw", when plugged and screwed to its "counterpart", as happened to some RB users during attaching the antenna to the input connector, to be read up in earlier threads. Again a question of quality. And, a BNC connector would have done better. More rugged, and FULLY capable of handling the input signals frequency range that it is about.
K.
“PS.: & BTW 2”, always try to ONLY tighten / turn the “connecting nut” in the above and similar application if making a connection. NEVER twist the connectors outer contact-surfaces themselve against each other. Their fine surface coating will wear out, thus deteriorating contact between them, consequently increasing the connections attenuation.
It’s worth to “fight for any db” (even fractions of a db) in this frequency range.
K
