From an engineering perspective my first guess would be “skin effect” and some phase shift. By bending it you’re causing irregularities and introducing resistance.
Conductors all have different skin depths and it changes with frequency and how the eddy currents affect the cross section. Basically as frequency goes up the depth gets shallower. 73, Jay Sent from my iPhone On Aug 13, 2025, at 4:54 PM, Richard Bonica via BVARC <[email protected]> wrote: To All, I am working on a Dual Band J Pole. What I am wondering is the following... if I use 90degree copper connectors and pipe, I get a nice clear signal and an SWR of like 1.4 If I use a pipe bender, that all goes out the window. The SWR stays the basic 1.2 - 1.5 but the actual audio has a weird pop and the signal loses a lot of strength. Anyone have a clue why the nice neat bends make the signal sound like garbage? Do I need to really use the ugly joints? -- Richard Bonica C: 281.935.7222 Email: [email protected]<mailto:[email protected]> Freq: 147.000 - DMR - Digital Mobile Territory: NE Fort Bend CERT, CST, EST, WEB EOC, HSEEP, FEMA PD, Wilderness First Aid, CPR, Extra Ameture Radio ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected] http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/[email protected]/
________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected] http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/[email protected]/
