"David" [EMAIL PROTECTED], who eschews obfuscation, said: > I have some hard line I that a friend gave me and was wondering how to > determine if it is any good?
If you can borrow one, a Time Domain Reflectometer can't be beat. You can backtrack the impedance and velocity factor if you know the length of the cable. Vary the velocity factor until the TDR indicates the proper length. Then inspect the cable carefully from end to end and look for any impedance bumps which are reflections. The TDR will tell you the distance to the fault, and the screen or outboard scope is you use one will show you the type of fault. I used the TDR to find a bad splice on a run, and water in the hardline to antenna jumper on top of a 285 foot tower with 600 feet of feedline. Good tutorial used to be at www.riserbond.com Am in Digest mode in case this already has been answered. Steve WA3SWS ******************************************************************* Steve Uhrig, SWS Security, Maryland (USA) Mfrs of electronic surveillance equip mailto:[EMAIL PROTECTED] website http://www.swssec.com tel +1+410-879-4035, fax +1+410-836-1190 "In God we trust, all others we monitor" ******************************************************************* Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
