Y’know how a quarter-wave stub of coax feedline has interesting properties? Like, if you attach one end to an antenna analyzer and left the other end open at 1/4λ down, then the open circuit looks like a short on the analyzer; zero Ohms resistance. And if you short the end, it looks like an open; …
Tag Archives: Coax
Visual Mismatch
Sonofabitch. As it turns out, the 60-ish feet of 50ohm RG-8 coax feedline I “rescued” from the disused tower at my last office is actually 75ohm T-1253A. I should’ve looked at the silkscreen more closely. I’m a blind fool. That might explain some of my inability to match my antennas on some bands. The SWR …