I often wonder just how useful a precision dummy load really is in the amateur service. I picked up home brew dummy load at the club the other day. It measured 57ohms dc and comprises 4 wire-wound resistors attached in a cluster across the end of the coax. After lots of disparaging remarks I put it on the VNA and it didn't look at all bad out to 30MHz: nothing over 1.5:1 and no spikes or dips to indicate resonances. I'll have to do it again and make a print-out for posterity. I've heard that salt water in a bucket works after a fashion. So the question is: how good do you need it to be? David G3UNA
> On 22 July 2019 at 23:58 "hawley, charles j jr" <c-haw...@illinois.edu> wrote: > > > Used Bird Attenuator is a good deal. > > https://nm3e.com/AttenuatorSampler.htm > > Then you’ll have a sample to plug into your counter or scope > > Chuck Jack Hawley > KE9UW > ______________________________________________________________ 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
