I’ve looked for months how to shunt feeding a tower. The YT search had nothing. Found this vid on a bing search. The YT search ain’t what is was 10 years ago. Thanks sooo much for the comprehensive explanation.
Very interesting. I've been trying to research shunt feeding my 80-foot grounded tower, but most don't explain things this well. Thanks for posting. 73, AA2HA
Excellent Video. One thing I noted was that you didn't make use of the AA-55's Memory. You could have easily stored all of your measurements in one save, and then brought them into the house to put on the software for viewing. There would be no need for the computer outside. SWR, Phase, Reactance and Resistance are all stored with one save. Just a thought.
Thanks for making such a detailed video. Could you make a part two and show how you feed the shunt wires? For instance, did you replace the variable capacitor with a fixed capacitor? Was the measured value of the variable capacitor the same as what you ended up using for the fixed capacitance? How do the two shunt wires connect to that capacitor? How is the coax connected and the whole thing protected from the weather? It would be really interesting to see how the relays work at the bottom of the tower, too. That's an amazing remote antenna setup!
Wow. This was excellent! I have a commercial type tapered triangular tower which is 56 feet tall. On top is a Mosely TA-33 "senior". I am very interested in shunt loading this tower for 160m, and appreciate your video. I imagine I will use stainless steel for the arms, on account of ice and wind issues sometimes here, though. Thanks Steve.
Hello Steve: Many thanks for your videos, i really enjoined. I have a similar situation as you describe at the end of the video. In my QTH i have a VERY limited space. After 10 years with a StepIR GP antenna i tried an almos impossible mission, to install a SO2R setup with 2 small tribanders, 40m rotative dipole, 80m Inverted L and 160m inverted L in 66 square meter roof, avoiding using coils in my antennas. After 4 years of work and several test im almost finished. Now im just thinking in to the last step, to remove 160 InvL and shunt feed the tower. Yes you´re right. Dont believe all you read in groups or forums, just tried the best you can do and experiment by yourself.
Well done video. Special thanks for your warning about insulated elements on the tower. A friend of mine is about to shunt feed his 75 Foot fixed tower. He has a Steppir antenna, and we're going to have to look closely at what might be induced into that antenna during transmit. He often runs 1.5KW. Ken W8ASA
Interesting video. I am looking at options to load my AB577/GRC mast which is a portable 50 ft large diameter tube tower "rotatable". I would like to do so without having to connect to it, but finding very little information about inductively loading it.
Question, I have a 2nd floor apartment station with a small 21" 3 element yagi that's mounted on a 6" coat rack indoors that's actually doing well hitting repeaters 79 miles away. I can't ground anything properly so would a counterpoise do anything?
I’ve looked for months how to shunt feeding a tower. The YT search had nothing. Found this vid on a bing search. The YT search ain’t what is was 10 years ago.
Thanks sooo much for the comprehensive explanation.
Very interesting. I've been trying to research shunt feeding my 80-foot grounded tower, but most don't explain things this well. Thanks for posting.
73,
AA2HA
Excellent Video. One thing I noted was that you didn't make use of the AA-55's Memory. You could have easily stored all of your measurements in one save, and then brought them into the house to put on the software for viewing. There would be no need for the computer outside. SWR, Phase, Reactance and Resistance are all stored with one save. Just a thought.
Thanks for making such a detailed video. Could you make a part two and show how you feed the shunt wires? For instance, did you replace the variable capacitor with a fixed capacitor? Was the measured value of the variable capacitor the same as what you ended up using for the fixed capacitance? How do the two shunt wires connect to that capacitor? How is the coax connected and the whole thing protected from the weather? It would be really interesting to see how the relays work at the bottom of the tower, too. That's an amazing remote antenna setup!
Excellent video on using RF knowledge for a practical solution!
Wow. This was excellent! I have a commercial type tapered triangular tower which is 56 feet tall. On top is a Mosely TA-33 "senior". I am very interested in shunt loading this tower for 160m, and appreciate your video. I imagine I will use stainless steel for the arms, on account of ice and wind issues sometimes here, though. Thanks Steve.
Hello Steve: Many thanks for your videos, i really enjoined. I have a similar situation as you describe at the end of the video.
In my QTH i have a VERY limited space. After 10 years with a StepIR GP antenna i tried an almos impossible mission, to install a SO2R setup with 2 small tribanders, 40m rotative dipole, 80m Inverted L and 160m inverted L in 66 square meter roof,
avoiding using coils in my antennas.
After 4 years of work and several test im almost finished. Now im just thinking in to the last step, to remove 160 InvL and shunt feed the tower.
Yes you´re right. Dont believe all you read in groups or forums, just tried the best you can do and experiment by yourself.
Well done video. Special thanks for your warning about insulated elements on the tower. A friend of mine is about to shunt feed his 75 Foot fixed tower. He has a Steppir antenna, and we're going to have to look closely at what might be induced into that antenna during transmit. He often runs 1.5KW. Ken W8ASA
Thanks for doing this video it was very informative. Please do more.
Great video, a pleasure watching it. Lot of info. Thanks.
Thank you Steve, Excellent video to cover the theory AND show it in practice at the tower. Well done!
Interesting video. I am looking at options to load my AB577/GRC mast which is a portable 50 ft large diameter tube tower "rotatable". I would like to do so without having to connect to it, but finding very little information about inductively loading it.
Awesome Steve, exactly what I was wanting to ask about your setup . might be possible for my small crankup. vy 73.
Fantastic video. thank you for all the tips. They will be handy with the new tower project!
Excellent analysis! Thank you!
I'm sure you know, this video is part of the ARRL Antenna book while reading the text.
Thanks for posting this Steve. Great video
Fred, K9SO
Amazing, excellent video TNX
Thanks Very much Steve - fantastic video. David VK3BDX
Thank you for the super informative video. Great job.
Barry, KU3X
Question, I have a 2nd floor apartment station with a small 21" 3 element yagi that's mounted on a 6" coat rack indoors that's actually doing well hitting repeaters 79 miles away. I can't ground anything properly so would a counterpoise do anything?
Thx for the video, will this work for a hazer tower? I'm thinking NO, b/c of the insulated tracks on the hazer.