On a recent-ish project, I was almost able to implement a 50-200MHz VCO and amplifier circuit without a PCB or etched board. It wasn't pretty (see image), and at the end of the day it didn't work, but I was surprised by how close it was to working. The only issue was a crosstalk noise which I pinpointed to a panel-mount BNC plug which I had epoxied onto the board as an edge-mount connector. The crosstalk was between a solder cup connected to the core conductor of the BNC and a grounding lug connected to the shielding. This was just the way the BNC receptacle came out of the box, I didn't add any of these contacts.
I get that I was not using the right parts for the job, but how are edge-mounted coax/BNC/SMA receptacles supposed to be attached to avoid crosstalk issues? How can I approximate those standards on a quick-and-dirty prototype like the one in the picture? Thanks!
I get that I was not using the right parts for the job, but how are edge-mounted coax/BNC/SMA receptacles supposed to be attached to avoid crosstalk issues? How can I approximate those standards on a quick-and-dirty prototype like the one in the picture? Thanks!
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