A key trick for soldering a connection near a part that you want to avoid over-heading: As soon as the solder wicks into the connection and you remove the flame/iron, immediately cool off the end to be protected. Heat transfer continues to happen even after the flame is removed.
This is the second video of yours that I've watched. I'm thoroughly impressed by your ability to teach concepts that others have just talked about at great length without conveying so much understanding. New subscriber! 👏👏👏
Great build....Love it. You could take it a step further and put a BNC fitting on the bottom end of the tube so you could use different lengths of replacable coax between the bottom of the antenna and the radio. It would also allow replacement of the coax if damaged because sometimes things get rough when out in the field. A piece of shrink tube or sealing tape would make it waterproof, yet still removable. I'd use a Signal Stick Antenna from "Signal Stuff". Super flexible, you can loop it in a knot when not in use, it's tough as nails and has a lifetime warranty. It can be had with a BNC connector as well as the SMA types. You could also drill a small hole at the rounded corner of the cap and bring the shield wire through it and solder it on the outside. That way, you don't have to worry so much if when soldering the cap to the pipe that the connection will come lose. I'm 100% making one of these. It's a 1/2 wave dipole. Very efficient.
Excellent video and great concept. You may want to look on Amazon an order some MOLLE elastic binding ribbons. Three of these should do the trick to secure your antenna. I use these for tying down small pieces of gear like flashlights to my plate carrier.
I just caught the last bit around 21:25. Yes, France and the US are very different. I just completed some antenna testing with my plate carrier (with a full load out) and the local Sherrif's department smiled ear-to-ear and gave me a thumbs up as they passed me on my run. Arizona is pretty good about this. Cheers from the US.
Although not a big problem in the developed world, in Afghanistan we had a problem with our radio operators who had antennas similar to this and would be walking around and every once and a while the antenna would hit a low slung, uninsulated power line. Ouch to the radio, the operator or both. Great build. There are a number of antenna systems designed for plate carriers. Yours if the first diy I’ve seen. Charlie KM4ZZ
Great video Gil. I made something similar to this for the side of my backpack. Think I've used it once made it about a year ago. Got into HF sota now 😉 Hope to work you on the air. Motters M7TRS 🇬🇧 73 👍🏻
This is similar to the Sperrtoph antenna made by ON4CFC. The inner is the positive part of the antenna with a sleeve on the outside being the negative. Mind you it is just over 1 metre tall so if it came to backpack it would be sticking out a bit. More like the flowerpot antenna but made from copper itself.
Gil, The antenna will certainly give you elevation for 'distance' but the only 'downside' that I can see is 'no flexibility' - perhaps a tape-measure type tactical antenna (for the top section) would be safer - especially near low-hanging branches? 73
Slot the end of the pipe...put a hole in the cap run the shield out..put a bit of epoxy on the feed...slip the pipe down and soldier the pipe and shield to the outside
Ive built something similar but used over flow pipe. I wrapped the pipe in foil and soldered copper braid on the end stop and taped the braiding to the foil. I used a telescopic whip and adjusted it to get a good SWR reading. I can send you the plans if you want.. not my design though!
I've been playing with coaxial sleeve antennae. Run a small diameter (rg-316) radiator up the thin end of a fishing pole and it would be better than a rubber duck. Not great, but better. It doesn't have the flexibility in swapping out the top side like your design though. Bonus, no soldering if you choose the right connector on the coax when purchasing. Buy it long enough, you could make 2.
In a pinch, you can also wrap 19 inches (about 48 cm) of adhesive copper tape around the end of a 48 inch section of fiberglass camo net support rod. Drop your coax extension down the rod with the connector and rubber duck sticking through the end cap. Ideally you'd solder the coax braid to the copper tape... or just peel back the coax insulation, stick the copper tape to the braid, and shove the whole thing down in your rucksack. Please don't ask how I know that works.
Géniale comme réalisation. Pour souder le blindage de ton fil sur le bouchon, la solution serait de percer un petit trou sur le côté du bouchon, en partie haute, et d'y glisser le blindage. Soudure finale et c'est réglé..
I use to use a 70cm dipole that spans across my shoulders and loops back to my radio, it is all made with coax, heat shrink tubing, and covered with camo 550 cord exterior sheathing. It works better than the rubber ducky, but having a dipole against your body isn't the best either. In the end I find it best to use a stub comet antenna with a BNC adapter then when needing to reach out I whip out either an Abbree 48inch with BNC, or hoist a slim Jim up into a tree.
WOOW, A Shop Wich Sells SMA Connectors? We Don`t have That In Latvia. But Copper Pipes, YES WE HAVE, i have so much and so many variates of copper pipes, copper wires, small and super thick. I make antennas left and right, but i still need to make the antenna that is not visible on radio because its illegal here to listen to frequencies im listening in so when im holding radio its obvious that its a walky talky and not a phone, i need to make some antenna that goes into my backpack or on my neck, i dont know, but i will think something out and i will make a video on it, i will test it with my nanovna before that and stuff, then i will remake it on video to show You guys how i made it and how good or bad it works. :) by the way, radio related materials and devices and parts, i have so so many things from radio related things, i inhereted a large portion of devices and so many parts, like selenium rectifiers and so manu soviet diodes, resistors, everything is soviet made, variable capacitors and all that, if you have any wish to buy some of it from Me i can give You the discord link where you can see images of the items i have, every now and then i go to take photos of everything and i just add the photos, if you have interest in the thing in image, just point it out and we can make a deal. the discord link is - discord.gg/6DVRpHnzKD
Hi great project, but regarding the antenna model, what is the impact of the gap in the center ? Also, usually the feedline goes perpendicular to the dipole , now it is parallel, is that the reason to put it inside the grounded leg ?
Gil, do you think the copper can be spray-painted without affecting the performance of the antenna? Anodizing doesn't affect the aluminum of - say - Chameleon's antennas, but I was wondering about paint on copper. Merci and 73 from Idaho.
That was a Donald Duck moment - 3:48, not a Brandon moment. Like when the Duck claimed over international TV, during a NATO meeting, that his parents lived in Germany and had a nice house there (his father was New York for heaven's sake). We all watched, across the world, and we were like whhhhhhaaaaaat????? Definitely a Donald Duck moment
16 turns and what do you get? 🎜 Another day older and deeper in debt. 🎜 St. Peter don't tell me that I can't go🎜 I owe my soul to an old radio🎜📻 Very good Idea, I will try to emulate what you have done, see you down the road.
Nice to see you back Gille thank for the great show de 2e0ree
always good to see you Gil, I hope all is well
All right, thank you!
Drilling a small hole in the copper end cap to let the shield poke through from the INSIDE, would allow you to solder it from the OUTSIDE! 😃
A key trick for soldering a connection near a part that you want to avoid over-heading:
As soon as the solder wicks into the connection and you remove the flame/iron, immediately cool off the end to be protected.
Heat transfer continues to happen even after the flame is removed.
This is the second video of yours that I've watched. I'm thoroughly impressed by your ability to teach concepts that others have just talked about at great length without conveying so much understanding. New subscriber! 👏👏👏
Thank you!
Veri informative video. Thank you for putting this together and sharing.
Excellent build.
Cool Gil! Good to see you are still posting neat ideas!
Awesome build my friend,
Awesome build 👏.
VERY GOOD JOB , CONGRATULATIONS
Thanks Gil, I will try one of these for myself but based around a favourite backpack. Thinking about it now. 👍
Great build....Love it. You could take it a step further and put a BNC fitting on the bottom end of the tube so you could use different lengths of replacable coax between the bottom of the antenna and the radio. It would also allow replacement of the coax if damaged because sometimes things get rough when out in the field. A piece of shrink tube or sealing tape would make it waterproof, yet still removable. I'd use a Signal Stick Antenna from "Signal Stuff". Super flexible, you can loop it in a knot when not in use, it's tough as nails and has a lifetime warranty. It can be had with a BNC connector as well as the SMA types. You could also drill a small hole at the rounded corner of the cap and bring the shield wire through it and solder it on the outside. That way, you don't have to worry so much if when soldering the cap to the pipe that the connection will come lose. I'm 100% making one of these. It's a 1/2 wave dipole. Very efficient.
The BNC connector would need to be insulated from the tube..
Brilliant idea Gil
Welcome back Gil..... interesting.
Welcome back!
Excellent video and great concept. You may want to look on Amazon an order some MOLLE elastic binding ribbons. Three of these should do the trick to secure your antenna. I use these for tying down small pieces of gear like flashlights to my plate carrier.
I just caught the last bit around 21:25. Yes, France and the US are very different. I just completed some antenna testing with my plate carrier (with a full load out) and the local Sherrif's department smiled ear-to-ear and gave me a thumbs up as they passed me on my run. Arizona is pretty good about this. Cheers from the US.
Excellent project sir! its worth mentioning this is also useful for the IC-705 in its backpack!
That's a great idea. Thankyou.
Fantastic video very well done .. thankyou for putting the time into making this.a very easy step by step program. Cheers from rob 👍 👌
Awesome plate carrier merry Christmas 🏴🫡
Merry Christmas!
@@RadioPrepper hope u have a great day look forward to seeing more experiments 🔬
Une conception intéressante, à creuser !
Thank you brother for explaining this I knew of this but didn't know how to do it thank you so much my friend
Nice to see you Gil. It´s a verry good idea.
mny tnx de Bernd, 73
Although not a big problem in the developed world, in Afghanistan we had a problem with our radio operators who had antennas similar to this and would be walking around and every once and a while the antenna would hit a low slung, uninsulated power line. Ouch to the radio, the operator or both. Great build. There are a number of antenna systems designed for plate carriers. Yours if the first diy I’ve seen. Charlie KM4ZZ
Interesting thanks. Those lines must have been pretty low.. I can see it happening with an HF whip though..
Great video Gil. I made something similar to this for the side of my backpack. Think I've used it once made it about a year ago. Got into HF sota now 😉
Hope to work you on the air.
Motters M7TRS 🇬🇧 73 👍🏻
This is similar to the Sperrtoph antenna made by ON4CFC. The inner is the positive part of the antenna with a sleeve on the outside being the negative. Mind you it is just over 1 metre tall so if it came to backpack it would be sticking out a bit. More like the flowerpot antenna but made from copper itself.
Very good build very neatly done👍
10/10 for this solution.... 73
Works on a backpack too!😀
1:35 *Hight is might* Nice one..Gil. 👍
Gil, The antenna will certainly give you elevation for 'distance' but the only 'downside' that I can see is 'no flexibility' - perhaps a tape-measure type tactical antenna (for the top section) would be safer - especially near low-hanging branches? 73
Very good love the content on this antenna 👍💯⚛
Slot the end of the pipe...put a hole in the cap run the shield out..put a bit of epoxy on the feed...slip the pipe down and soldier the pipe and shield to the outside
Yep, that would work!
Ive built something similar but used over flow pipe. I wrapped the pipe in foil and soldered copper braid on the end stop and taped the braiding to the foil. I used a telescopic whip and adjusted it to get a good SWR reading. I can send you the plans if you want.. not my design though!
Es usted un mago de QRP 🙌👋👋
73
I've been playing with coaxial sleeve antennae. Run a small diameter (rg-316) radiator up the thin end of a fishing pole and it would be better than a rubber duck. Not great, but better. It doesn't have the flexibility in swapping out the top side like your design though. Bonus, no soldering if you choose the right connector on the coax when purchasing. Buy it long enough, you could make 2.
Exactly. Indeed a correct connector and a bit of epoxy could avoid soldering!
In a pinch, you can also wrap 19 inches (about 48 cm) of adhesive copper tape around the end of a 48 inch section of fiberglass camo net support rod. Drop your coax extension down the rod with the connector and rubber duck sticking through the end cap. Ideally you'd solder the coax braid to the copper tape... or just peel back the coax insulation, stick the copper tape to the braid, and shove the whole thing down in your rucksack. Please don't ask how I know that works.
Géniale comme réalisation. Pour souder le blindage de ton fil sur le bouchon, la solution serait de percer un petit trou sur le côté du bouchon, en partie haute, et d'y glisser le blindage. Soudure finale et c'est réglé..
Oui, merci!
I'm thinking that fitting a spring into the copper tube and soldering the shield to the spring might be easier than soldering inside the end cap.
That would work..
I use to use a 70cm dipole that spans across my shoulders and loops back to my radio, it is all made with coax, heat shrink tubing, and covered with camo 550 cord exterior sheathing. It works better than the rubber ducky, but having a dipole against your body isn't the best either. In the end I find it best to use a stub comet antenna with a BNC adapter then when needing to reach out I whip out either an Abbree 48inch with BNC, or hoist a slim Jim up into a tree.
Horizontally polarized the others would need to hold their antenna horizontal too or you lose 20db...
Horizontal whilst everyone else is using vertical means you wont be getting as strong a signal out to them.
WOOW, A Shop Wich Sells SMA Connectors? We Don`t have That In Latvia.
But Copper Pipes, YES WE HAVE, i have so much and so many variates of copper pipes, copper wires, small and super thick.
I make antennas left and right, but i still need to make the antenna that is not visible on radio because its illegal here to listen to frequencies im listening in so when im holding radio its obvious that its a walky talky and not a phone, i need to make some antenna that goes into my backpack or on my neck, i dont know, but i will think something out and i will make a video on it, i will test it with my nanovna before that and stuff, then i will remake it on video to show You guys how i made it and how good or bad it works. :)
by the way, radio related materials and devices and parts, i have so so many things from radio related things, i inhereted a large portion of devices and so many parts, like selenium rectifiers and so manu soviet diodes, resistors, everything is soviet made, variable capacitors and all that, if you have any wish to buy some of it from Me i can give You the discord link where you can see images of the items i have, every now and then i go to take photos of everything and i just add the photos, if you have interest in the thing in image, just point it out and we can make a deal. the discord link is - discord.gg/6DVRpHnzKD
Hi great project, but regarding the antenna model, what is the impact of the gap in the center ? Also, usually the feedline goes perpendicular to the dipole , now it is parallel, is that the reason to put it inside the grounded leg ?
Yes, it is not optimal but more practical. The gap was just there, no purpose.
You could have used a bulkhead connector and you would not have had to solder the coax. Nice idea. Thanks for the video. de N1PCE
Bonjour
Pouvez vous preciser ce qu’est le 143 dans votre calcul ? (143/146=0.98)
Un peu moins de la moitié de la vitesse de la lumière, considérant le facteur de vélocité du cuivre..
Would have loved an A-B test with the stock antenna!
I might do that...
Gil, do you think the copper can be spray-painted without affecting the performance of the antenna? Anodizing doesn't affect the aluminum of - say - Chameleon's antennas, but I was wondering about paint on copper. Merci and 73 from Idaho.
Absolutely.
I would try plastic instead of copper tube and wire for grounding inside.
That would save some weight...
Hi Gil,
Can you give me details for the butane torch you used for soldering? Is it European?
No markings but the gas containers are made by Campingaz. Bought in France at Castorama (store).
@@RadioPrepper Thanks Gil
Mike
Do steel plates alter the signal?
Not sure, mine are polyethylene.
I would have thought that a 1/4 wave of coax fed to a connector of the antenna would act just the same as the copper tube.
Not quite I believe.
I though your body works somewhat as a counterpoise?
Not unless you touch the radio ground, and even then...
How about a Field Range Test comparison test rubber duck vs your dipole contraption? Wear a jacket over the plate carrier for the "Gray Man" effect
Without the plate carrier, on a backpack, that would work..
That was a Donald Duck moment - 3:48, not a Brandon moment. Like when the Duck claimed over international TV, during a NATO meeting, that his parents lived in Germany and had a nice house there (his father was New York for heaven's sake). We all watched, across the world, and we were like whhhhhhaaaaaat?????
Definitely a Donald Duck moment
Standard Dipole with balun would have been better.
On VHF on a plate carrier, how? A BALUN? How? Did you watch the video? I is essentially a vertical dipole..
Nice Antenna, Gil. Its not a problem if you run with that antenna. If you dont cry alahu akbar, its all fine. ;-)
best greets from germany, 73 de jan
Yes, that would do it!
16 turns and what do you get? 🎜
Another day older and deeper in debt. 🎜
St. Peter don't tell me that I can't go🎜
I owe my soul to an old radio🎜📻
Very good Idea, I will try to emulate what you have done,
see you down the road.