Ok.. With that said, is there a way to bend without changing the resistance? This sounds like the most plausible scenario.
Richard Bonica C: 281.935.7222 Email: [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 On Wed, Aug 13, 2025, 9:17 PM Daniel Poirot <[email protected]> wrote: > Does this affect the Velocity Factor that you see on the calculators? > > Dan KJ5IZK > > > > On Wed, Aug 13, 2025 at 6:42 PM Jay Davidson via BVARC <[email protected]> > wrote: > >> 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] >> 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]/ >> >
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