There were some comments about speaker loss and the contribution of loss as a result of vinyl dielectric. A way to evaluate is to measure a length of speaker wire and compare to an air dielectric equivalent. Here is an example:
https://www.kn5l.net/SpeakerWire/ The Air dielectric equivalent model is for #18 with spacing for a Zo match with the speaker wire, 117 Ohm. Note that at 10 MHz, the speaker wire loss is over three times the air dielectric equivalent. A DC resistance of the speaker wire suggested that the wire size is actually closer to #19. Tough measuring these very low DC resistances, so decided to assume #18 for the air dielectric model. The speaker wire loss and Zo used a Zoc and Zsc data set. There are links to the two files for verification. Check my math! 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 arch...@mail-archive.com
