My only contribution to this discussion is to say that I've tried RS clamp-on ferrite chokes in multiple applications from coax shielding for antennas to shielding the cables for the old CRT's for the computer, and never found that they did anything.
Russ Edmunds Blue Bell, PA ( 360' ASL ) [15 mi NNW of Philadelphia] 40:08:45N; 75:16:04W, Grid FN20id <[email protected]> FM: Yamaha T-80 & Onkyo T-450RDS w/ APS9B @15' AM: Modified Sony ICF 2010 barefoot --- On Mon, 9/6/10, Chuck Hutton <[email protected]> wrote: > From: Chuck Hutton <[email protected]> > Subject: Re: [IRCA] Cable connectors > To: [email protected] > Date: Monday, September 6, 2010, 2:36 PM > > Rick - > > I liked your explanation except for the part below. > Considering the choke impedance to be part of a voltage > divider along with the ground resistance, you surely need a > choke with at least several thousand Ohms of impedance. With > a poor ground connection (sandy soil), you can need even > more. I won't bore everyone with the explanation. > > Bottom line: I don't think you can ever get even close to > that with the over-the-cable chokes. I can recommend only > the chokes made with mini-coax and high permeability (at > least 2000) material. > > > Chuck > > > From: [email protected] > > To: [email protected] > > Date: Mon, 6 Sep 2010 13:20:37 -0400 > > Subject: Re: [IRCA] Cable connectors > > > > > > Mark, > > (CLIP) > Too little added impedance and the effects > > aren't all they should be. Usually, paying attention > to the core material for > > the band in question, and getting large enough > over-the-cable tubular chokes, > > or winding an appropriate number of turns of cable > through a toroid core, will > > do the trick. > > (CLIP) > > > > Rick Kunath > > _______________________________________________ > > IRCA mailing list > > [email protected] > > http://montreal.kotalampi.com/mailman/listinfo/irca > > > > Opinions expressed in messages on this mailing list > are those of the original contributors and do not > necessarily reflect the opinion of the IRCA, its editors, > publishing staff, or officers > > > > For more information: http://www.ircaonline.org > > > > To Post a message: [email protected] > > > > > > > _______________________________________________ > IRCA mailing list > [email protected] > http://montreal.kotalampi.com/mailman/listinfo/irca > > Opinions expressed in messages on this mailing list are > those of the original contributors and do not necessarily > reflect the opinion of the IRCA, its editors, publishing > staff, or officers > > For more information: http://www.ircaonline.org > > To Post a message: [email protected] > > _______________________________________________ IRCA mailing list [email protected] http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: [email protected]
