Hi Guys, I'm wondering what the typical resistance should measure on a 100' length of RG-8 coax with one end shorted? I'm measuring 1.5 ohms when shorting one end of a 240' length of RG-8 ... is that
That seems about right to me. And yes, if the resistance gets higher it could point to problems, but I would blame it mostly on poor connectors rather than the cable unless it was corroding through t
K1TTT wrote... Or, put a good dummy load at the far end, and measure the RF power out of the exciter into the cable. Now, without changing RF level, move the power meter down to the dummy load end an
There is one big advantage of the return loss test, besides measuring double the loss (down and back) which gives a more sensitive test... and that is you don't have to go to the far end of the cable
The answer is simple, but one size does not fit all RG8s. First, RG8 is NOT a specification for coax, it generically describes a 50 ohm cable of about 0.4" diameter. That's ALL! There are wide variat
Dick, the ohm meter test is d.c. only but it will detect a shorted or open cable. The loss has to be determined with real r.f.. Starting with say, 100 watts, how much power is present at the end? Com
As long as the coax is not waterlogged and the braid is not corroded there will be little to no change in loss factor for old coax - especially the solid polyethylene center insulator... It may shri
Also, having a non-contaminating jacket is important for long life. Cheap CB type cables don't usually have a ncv jacket and the loss begins deteriorating the day it is installed and exposed to uv li