Hi all, I've been trying to figure out how, using relatively simple equipment, to determine proper cable length for one-quarter wavelength cables of a given type of cable (i.e.: RG-400). One of my thoughts was to measure the open circuit resistance using an older MFJ-259, however this results in strangely low impedances that I believe hamper proper readings.
Basically, I'm trying to figure out if I need to cut the cable shorter or if it's too short, and right now nothing I have gives me any clue as to exactly where it is, short of transmitting a few watts and watching the SWR as I change frequency. -- Kris Kirby, KE4AHR Disinformation Analyst