Tom & all those that replied, Thanks for the replies. I do have a 259B I bought off of fleabay several years ago & no manual came with it. I only wanted it for SWR readings to adjust my vertical wires since opening the box.
I just downloaded the manual on PDF and read the "advanced" section dealing with distance to fault. Sorry to say I must not be as sharp as I used to be and I can't tell from what I've read if the RG6U needs a termination for this distance to fault test or if the coax is unterminated. Since it's the weekend I can't call MFJ but perhaps someone knows this answer & can let me know so I can have at it tomorrow. Apparently I'll need to find the velocity factor of this particular RG6U and then can do the math they describe. I just need to know if I test this on an open coax or with a 75 ohm carbon resistor at the distal end of this 75 ohm coax (or 50 ohm on RG-8). And, does it matter if I use either of the SO239 or the BNC ? Thanks for the pointers. 73 Gary KA1J > >I need to isolate if a problem I am having is in a faulty 75 ohm > coax > > (Remee RG6U flooded variety) where either a critter bit into the > coax > > or a Snap-&-Seal 6QS connector failed, or an electronics issue is > the > > culprit. > > > > What's my most expeditious way to prove if it is or is not the > Coax? > > MFJ analyzers, such as the MFJ-259B, have a distance-to-fault > function. I > use it on my system, and can find a problem within a few feet on a > 2000-3000 > foot cable. > > Of course a creative person could do the same thing with a simple RF > generator, a T connector, and some way of measuring signal level at > one port > of the T. > > 73 Tom > > --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com _________________ Topband Reflector
