Fixing and Testing the 73's Cobweb Antenna (
Вставка
- Опубліковано 26 сер 2024
- Today we are going to finish this antenna which includes getting it on top of a pole and elevated. Then we will test it to see just how effective is the 73antennas.com Cobweb antenna?
Subscribe: / davecasler . Ask Dave Playlist: goo.gl/inaQeB. Tip Jar: ke0og.net/tip-jar
Edited by Callum Jakeman.
To learn more about me, visit: www.dcasler.com...
Tip jar (on my website): www.dcasler.com... (provides a method to use your credit card via PayPal, Also describes Patreon)
To pose an Ask Dave question: www.dcasler.com... or www.ke0og.net/a...
To order the most recent and up-to-date Amateur Extra videos on a thumb drive: dcasler.com/aev...
Theme music is "Sour Tennessee Red," by John Deley and the 41 Players, courtesy UA-cam Music Library.
I use drawings from OpenClipArt.org, including the "walking man"
Technician training videos, see www.ke0og.net/t...
General training videos, see www.ke0og.net/g...
Amateur Extra training videos, see www.ke0og.net/e...
List of the Ask Dave videos, see dcasler.com/ask...
Thanks to my sweet wife, Loretta, KBØVWW, for both audio and video assistance! (Her website is www.aldea-art.com.)
My primary website: www.dcasler.com
The ham radio part of my website (direct link): www.ke0og.net
My publishing website: www.mtsneffelsp..., where you can find my fantasy and science fiction books, as well as some local history books I publish for the Ridgway Railroad Museum and the Ouray County Historical Society
My Amazon author page, which lists my print and Kindle books: www.amazon.com/....
I'm often asked what equipment I use to create the videos. The devices include the Panasonic DMC-G7 camera, Panasonic HDC-TM90 video camera, GoPro Hero2 HD camera, Tascam DR-05 audio recorder, Audio-Technica ATR-3350 lapel microphone, Sony Cyber-shot DSC-W560 digital camera, the Kodak Zi-8 video camera, my iPhone 5S. Software used: CyberLink PowerDirector 17 on an HP Gaming Pavilion, also using Smoothdraw 4.0.5.0, FastStone Image Viewer 5.3, FastStone Capture 8.0, Audacity 2.1.1, LibreOffice 5.0.4.2, and Ink2Go 1.7.2. You can see how my studio is set up by viewing • Tips for Making Instru... .
Twitter: @dcasler
I'll stick with an endfed wire antenna......after many years with Yagi's and towers, I like it simple now..... 73/K6SDW
Great video Dave!!! Maybe you should start a second channel on "Deer hunting on the antenna farm"!!!!!!! Big thanks to your helpers!!
Great video Dave. Glad your team was able to get the antenna up.
Looks like a finger smasher, head smacker project. Glad you got it in place!
Let's hear it for live TV!
Pro tip: when you're dealing with an object where 99% of the mass is at one end and you're trying to manipulate it vertically at the end that's the 1%... Big fun is guaranteed. :)
Glad your cameraman thought fast.
I think I'm going to start anodizing or painting all my nuts and bolts bright orange. Should make 'em easier to find in the grass!🙂
I start with putting a dot with a paint marker in white before I begin.
Those light duty springs are a good idea to keep the elements tensioned however they're not going to survive the first ice storm in the Northeast United States. The weight of ice on the elements will stretch the springs out and the additional diameter that would be added to the elements coated in ice will substantially increase the wind loading on the elements and the mast/guy system.
I had similar issues on 20m and 40m tuning an Octopus. I only had it 18' or so high, so the R value was low on those bands. Remembering that offsetting the feed point increases the feed point resistance, I moved it 3" at a time by extending one side and shorting the other, and the SWR came right down. Can't do anything about the low bandwidth due to hi-Q, but at least no tuner required.
Wondering if some wind chimes from the dollar store, or a bag a jingle bells (Walmart or Joanne's) hanging on the guy wires might spook the deer away?
Windy I learned never to put that up in the wind. The kid sure is earning his money.
Crazy as it sounds, it looks like a good family project. Kids workin with the old man, elbow knowledge along the way. That’s kinda cool. That said, it looked kinda dangerous
Love all the videos. Thank you.
Dave, did you ever do a comparison between your other antennas? I could not find it in your archives.
I can't find the video on testing this antenna on the air
Better to put the antenna and mast together laying on the ground with the bottom connected to a pivoting base, and then walk it up and lock the base. I use the same kind of surplus military mast on a wooden pivoting base that I built to support my dipole antenna. I can put it up myself, and it's much safer. It's also easy to bring it down to work on it if I need to.
Wish it was possible to order one of these antennas. It appears this company has gone out of business just as quickly as they started.
You have more problems with deer messing up your antennas. Need to make those deer into venison in your freezer.
Seriously, a hard hat is only $6. If that mast came down while you were guying it....You read the QST article on tower safety?
As Grace Slick said, please "keep your head!"
SWR for 40m would probably improve with more height... It is a nice antenna though. 👍
There are so many types of antennas out there and I’m new to this. Does anyone know if there is a list of all the types and what they do well?
Yes, Its called the ARRL antenna book.
@@forgetyourlife I found it thank you very much
Wondering if the high of the antenna is affecting the swr. That's the recommended high for this antenna?
Like Dave always says, Rule 1 of antennas is everything affects everything, and Rule 2 is height matters.
I'm trying to get my antenna game up to speed. I mentioned in another comment that I'm running the Alpha-Delta DX-CC dipole (82ft long). I know for a fact that it needs to come up off the ground more than it is. But I'm curious about the analyzer. I'm assuming it doesn't care about radiation patterns and it's calculating strictly resonance. So the analyzer wouldn't care about the antenna height. Is that correct? I don't want to spend $400+ on something that's not going to work because of a problem I already know I have. Still.. if I want to dial in whatever antenna I'm using, it'd sure be nice to have an analyzer.
The analyzer measures the parameters of an "in situ" (installed) antenna. Moving the antenna up or down or to a different spot will affect SWR and the analyzer will measure that.
@@davecasler Ah. Thank you. Well, I guess that means I need to figure out that height issue first. ;-)
@@davecasler I would have known that if I had just watched a few more videos. LOL. I'm working thru them.
If it doesn't work for you as an aerial you can always hang washing on it.
G4GHB
👍👍👍💯🤘🍻🙋♂
Ukraine, like America is not The America.
Thanks you for the nice video. Best 73's. Joël/F8MGW