Jim, I have been following the thread on radials and I have a question which I have not seen clearly discussed. My setup (just got the tower up this fall radials will be next spring) is an 80' free
80' free standing AN Tower. It sits on a 12X12 base of concrete. My plan is to place a copper tubing ring around the outside of the base (slightly buried) to it I will connect radials for 40/80/160.
Rick, I noticed this response and have a question. Background: I have an 80m 4 Square insulated 25G verticals and another tower that is grounded that I shunt feed for 160m. In all cases the radials a
You can estimate 20 nH per inch for these hook up wires. On 80 meters, think of that as as about a half ohm of inductive reactance per inch, or 6 ohms of inductive reactance per foot. Thinking of it
On 12/13/15 10:56 AM, Richard (Rick) Karlquist wrote: You can estimate 20 nH per inch for these hook up wires. On 80 meters, think of that as as about a half ohm of inductive reactance per inch, or 6
Putting strap, ribbon, or multiple parallel wires (that are close to each other) reduces the R but doesn't change the L very much. The magnetic fields couple between parallel wires or "filaments" wit
Thanks for the responses! Sounds relatively easy to fix. I was worried I was going to not learn anything today :-). 73...Stan, K5GO Sent from Stan's IPhone ___________________________________________
Rick, OK. Just read this. What would your best suggestion be for me to most effectively fix what I have described? Stan, K5GO Sent from Stan's IPhone _______________________________________________ _
OK. Just read this. What would your best suggestion be for me to most effectively fix what I have described? Stan, K5GO I think the general advice is to have a ring around your foundation where the r
What works great for me .. and always has ... is putting groups of a few radials in 'solder lugs'... and then taking all those lugs and putting a single bolt/lockwasher/nut through them all .. with,
Rick, Thank you for the advice. I don't know when I'll get to this with my busy retirement schedule (seriously these verticals with the current set up and then see what they look like after the chang
Hi Rick, Why wouldn't you just run all of the radial wires up over the foundation to a small ring or combined connections right at the tower? 73 Gary K4FMX ___________________________________________
That might be the thing to do on a new installation. Unfortunately my radials are about two feet short for that. I decided to drive to my station and see what would happen by making Rick's suggested
Why wouldn't you just run all of the radial wires up over the foundation to a small ring or combined connections right at the tower? 73 Gary K4FMX If the radials are taut and the base is elevated, th
Sent from my iPad A 33-ish foot stub connected at about 64-66 feet? Might need more than one to decouple the top of the tower. Elsewise, it might read like a full-wl vertical (firing upwards). 73, ke
Rick, Just finished one of the 80m 4 Square Towers. Before any change it was resonant at 3540 - R = 38.7. That was with two wires going from plate with female UHF connector to radial ring. Now I have
Author: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Mon, 14 Dec 2015 20:22:15 -0500
Guys should attach to a guy bracket! A guy bracket is a substantial assembly of 1/4" steel on a 25G. I don't know the width, but think it's probably about 1.5 inches. The bracket assembly completely
Author: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Mon, 14 Dec 2015 22:17:21 -0500
Sho nuff! Hmmm. I open a post, answer it and it ends up in the wrong thread. Ever have one of those days when every thing you touch turns to ahhh ...Well you know the rest I did make this answer a bi
Another way to think about this is that your antenna starts at ground. When you have a long ground lead (any length) from the radial system to your feed point that lead is part of your antenna. It do