Wes That is an option you have and no one is making anything do anything. It is 100% up to you.
Happy New Year On Fri, Jan 1, 2021 at 1:21 AM Wes <[email protected]> wrote: > Hi Mike, > > I've read all of that stuff and more many times. Frankly, I'm not > motivated to put a 10 pound lump of ferrite on every wire into or out of my > shack. It appears that common-mode chokes and articles about them, have > become a cottage industry. I will leave my opinion of the topic at that. > > Back to the actual case at hand, a ground-mounted, inherently unbalanced > antenna, with a bunch of radials. I contend that the coax outer conductor > is just another radial. As an approximation the currents in the radials > will divide by the number of radials. Because of its different length, > there will be asymmetry in the coax "radial" current but it could go either > way. So tell me where exactly do I choke this "radial" and why? > > Wes N7WS > > On 12/31/2020 8:22 PM, Michael Walker wrote: > > Hi Wes > > The chokes do a few things. For transmitting, they keep the RF off the > feedline. It is critical for RX and TX. > > Just as importantly, they keep RF and Noise off the feedline while > receiving, and this is what you want. The quieter you are, the more you > can hear. > > Common Mode Currents can raise make it harder to hear weak signals and I > have seen and heard this with my own ears, as many others have. How about > I reduced my 80M noise floor from S9 to lower than S6. I'm not sure on > 160M as I didn't really get going on 160 until after I was loving chokes. > I now buy them in lots of 50 in bulk from Digikey. > > Read these pages. This is where I started a long time ago > http://www.yccc.org/Articles/W1HIS/CommonModeChokesW1HIS2006Apr06.pdf. > Well worth the read. > > Next, read Jim's stuff http://k9yc.com/2018Cookbook.pdf > > He is part of this group, and I know he will comment at some point. > > Mike va3mw > > > On Thu, Dec 31, 2020 at 9:50 PM Wes <[email protected]> wrote: > >> I have the same situation and no choke. IMHO the transmission line is >> just >> another random length radial. I don't have chokes on any of the others >> either. >> >> Wes N7WS >> >> >> On 12/31/2020 5:15 PM, Kenneth Silverman wrote: >> > Hello, I have an inverted-L and the radials are laying on the ground AND >> > the coax is on the ground too with radials right near the coax run. Do >> I >> > need a choke to stop any feedline coupling/radiation, and if so, where >> in >> > the feedline? >> > >> > The antenna is in the woods so burying either the radials or coax won't >> be >> > easy. >> > >> > Many thanks, Kenny K2KW >> > _________________ >> > Searchable Archives: http://www.contesting.com/_topband - Topband >> Reflector >> >> >> _________________ >> Searchable Archives: http://www.contesting.com/_topband - Topband >> Reflector >> > > _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
