be needed using coax with a velocity factor of 80 percent. I whacked off a 222 foot chunk, installed a PL-259 on one end, and started my "education". Solid dielectric cables have a very consistent v
Tom, The cable wasn't rated per se. It is a foam dielectric so I guestimated .8 as a starting point. Can the true VF be determined from the data I collected? 73 de Bob - K0RC -- Original Message -- _
I guestimated .8 the data I Sure. You can find the electrical length in feet, fractions of a wavelength, or degrees with an analyzer and the physical length in the same basic unit with a physical le
K0RC: collected? Vf = actual length / 268.75' (for 1.83 MHz). 268.75' is the free space 1/2 wavelength at 1.83 MHz using the formula 983.56/f * 0.5 for 1/2 wl (983.56 from ARRL Antenna Book). What yo
Tom, Once you explained how to calculate the Velocity Factor, I went "duh, I should have know that". Thanks for the refresher. This evening I tested the inverted vee with the new RG-8x 1/2 wavelength
Hello Bill, Thanks for the detailed calculations. But your method of calculation and making one cut at 200' would have eliminated ALL of the "play time" with my new toy!!! 73 de Bob - K0RC Message: 6
dropped from 43 to numbers make sense. should have a pretty 2.3 ohms? _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather S
Tom, That's what the analyzer is telling me, 2.3 ohms. My final "adjustment" is going to be taking the 1:1 balun out and feeding the antenna direct with the RG-8x. I will rerun the test and see if th
A follow up. I removed the balun from the antenna and fed the RG-8x direct. There was no significant change in any of the measured antenna characteristics. 73 de Bob - K0RC __________________________