The cable comprised 28x0.19mm copper strands inside a 3mm diameter PVC jacket. Zo was measured as 130 Ohms and Vf as 0.66. These were the Copper losses, Dielectric losses and Total matched losses per
Jim, They do, by virtue of the way the data is derived! I make Open-Circuit and Short-Circuit S11 impedance measurements of the line; from which Zo=SQRT(Zoc.Zsc). Loss is determined from the input re
They do, by virtue of the way the data is derived! I make Open-Circuit and Short-Circuit S11 impedance measurements of the line; from which Zo=SQRT(Zoc.Zsc). Loss is determined from the input resista
OK.. so you didn't actually independently measure the copper and dielectric loss (I haven't had my coffee yet, and I'm not sure how you would do that other than by how you did it); You fit the measur
Jim, I forgot to say that the line distributed parameters - R, L, G and C - are all directly calculable from Zoc and Zsc; to that extent you can then calculate the losses associated with R as distinc
At 1 MHz skin depth in copper is 2.5 mil/65 micron. AWG 24 wire is 20 mil/511 micron diameter, which is 8 times the skin depth. Start going much lower, or using AWG 40 wire, and that thin tube assum
So it looks like we have an alternative to coax or open wire line to feed a dipole for example. If I took, say, #14 stranded, and twisted it, it would be a good match for a center fed dipole, low los
Author: Herbert Schoenbohm <herbert.schoenbohm@gmail.com>
Date: Mon, 13 Apr 2015 12:18:37 -0400
Telephone C drop wire may work in your case and it is very strong. I believe the characteristic impedance is 70 ohms. On 3/24/2014 4:15 PM, jpk5lad@cox.net wrote: From where I'm sitting, I can see a
In the 70's, there was a product named 'Saucerline' .. which had circular plastic insulators which were donut-shaped. It was 75 ohm line. 73 Don N8DE Telephone C drop wire may work in your case and i