Recently I de-soldered an f-connector (coax) from a pre-made circuit board. This consisted of 3 soldering connections, 1 for the center wire and 2 for the braid which was electrically connected through a mounting plate. Then I attached the V+ from a 18V battery to the where the center wire was, and ground to just one of the braid connections. My circuit seems to have experienced some signal loss as a result, and I am at a loss to explain why connecting the 2nd ground would affect anything. As far as I can tell, there is nothing on the circuit board even connected to the ground I left open. Any ideas? Before this, the battery was connected to a normal coax cable I had stripped, V+ to the center wire and ground to the braid. I'm thinking perhaps coax has some transmission properties that aren't matched by the now present 22 AWG stranded wire. Is that the case? The signal is in the 950-1450 range. I can provide pics if needed.