Yes SMALL and PORTABLE is what I am interested in. I never wanted a TDR. Rig experts are fine analyzes but out of the league of what I want which is something to toss in my "go" bag
Ronnie W5SUM Sent from my iPhone > On Dec 1, 2017, at 11:19 AM, George Thornton > <gthorn...@thorntonmostullaw.com> wrote: > > The Time Domain Reflectometer (TDR) is a hugely important feature, and is now > available with other brands, including some of the RigExpert models. > > I do a lot of field work with both HF and VHF/UHF. In my experience most of > the problems I have encountered have been traced to cable defects of one kind > or another. The TDR function allows you to quickly and reliably test the > integrity of cabling, allowing you to identify the exact location of the > defect. > > I am partial to the RigExpert models, which have been reliable and accurate, > and very easy and intuitive to use. > > My only quarrel with RigExpert is that they do not offer water resistant > sealed cases. These can get damaged in a wet environment. > > > > T-----Original Message----- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Sheldon > Sent: Friday, December 1, 2017 5:39 AM > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] Antenna Analyzer > > I was introduced to the SARK-110 several years ago and besides being an > excellent antenna analyzer, it had one feature that nobody else had (when I > bought the SARK) and that is called a "Time Domain Reflectometer". This > allows you to find breaks, impedance bumps and other anomalies in cable runs. > > During my 20 years in the Army, I was introduced to a hugely expensive > HP-140A oscilloscope with a TDR plug in. We used it to find cuts in our > buried coax where the local people were digging it up for the copper (back in > 1967). From that point on, I always wanted a TDR but they were way too > expensive (even used) for a poor ham to even consider until I was introduced > to the SARK by a good friend at the "OzarkCon" QRP convention. It paid for > itself quickly by finding where a gopher (or > mole) had chewed mostly through some buried coax I had going to a vertical in > the back yard. The SARK's TDR pinpointed the break within a foot and it was > probably more accurate than that as my measurements when following the cable > were somewhat sloppy. > > It also makes a pretty decent signal generator as well, can be calibrated > against WWV with not too much effort, but the minimum signal you can output > is 50 microvolts (S9) so a good external step attenuator is needed along with > double shielded cables to minimize feedthrough of > the SARK's output signal. Oh yes, I did mention, it's an excellent > antanna analyzer as well and it will do Smith Chart plots and other stuff > too. You can control it with a computer via USB too. > > No financial interest in the company, just a very happy user. > > Jim - W0EB > > ------ Original Message ------ > From: "John Oppenheimer" <j...@kn5l.net> > To: elecraft@mailman.qth.net > Sent: 12/1/2017 7:23:20 AM > Subject: Re: [Elecraft] Antenna Analyzer > >> The SARK 110 is very small with many features: >> >> http://www.sark110.com/ >> >> John KN5L >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net Please help support this email >> list: http://www.qsl.net/donate.html Message delivered to w...@cox.net > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Message > delivered to gthorn...@thorntonmostullaw.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w5...@comcast.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
