How to test it depends on whether you have access to both ends of each length of coax,have a bunch of coax im thinking may be damaged,possibly bad bnc to co-ax connection.
so,i know theres an answer out there waiting to make its debut on the world wide web!
I stand corrected. I was thinking of a time-domain reflectometer. That appears to do almost the same thing with less precision and at lower frequencies. Also at a much lower cost. For a pretty good one try:DC continuity/short checks will tell you only that much, or in other words whether or not it can be used as battery cable. What you need short of a Q meter and a bunch of RF theory under your belt is an antenna analyzer. Don't let the name fool you, you can also make some fairly complex transmission line measurements as outlined in the instructions. The bottom line here is there are two "Ohm's Laws", one for DC and the other for AC otherwise known as VAR, volt-ampere reactive. When you get up into RF you're in another world entirely.
"...you can't find any of that out without thousands of dollars worth of test equipment."
Oh contraire, I found this very useful and of course there are others similarly priced.
If your dmm does not have a continuity test selection then just use the lowest ohmYes,i do have availability to the full lengths,im concerned that the BNC connectors are poorly connected.
i picked up a box of misc antennas and some LM cable,hooked up the LM bot it seems,i dont know,not the esame feel i guess,not sure how to articulate the difference vs. the pre fab cable i had there already,
so im thinking test the cables,move em around a bit and see if the reading drops or peaks,then ill have a better idea if its the coax,if no i can move on to the BNCs..
just not sure what to set the mulit meter to..sorry for the vagueness,,i guess i needed to catch the replies to focus my intent,,thanks gents!
i think he means the foam dielectric cables(did i spell that right?),Styrofoam?
Many... Connector connections are usually the problem 90% of the time, but often the last thing checked or even considered. I've talked people into buying $5 continuity checkers at the hardware store and they finally discovered a problem they had for months.How many people pull their hair out trying to troubleshoot radio problems without doing a simple check of the coax.