Thanks, yes this one works well. Finished one this morning and used it for 10M POTA activation today. Got a few contacts , not the best reports but I had only 5w and had forgot my telescoping pole so did not get it too far up into the trees. :-) SWR was just around 1.1:1 so all good there at least. What was a bit strange is when I first tested with a 50 ohm resistor across it showed almost 2:1 so I was a bit sceptical then, but worked out very well with real wires!
I've been watching your videos for more than a year... So much useful information! I'll be soon embarking in the adventure of getting my ham licence. Your videos will help me build my own gear. Thank you for what you do. 73!
Excellent project! Good to see how well something simple but built performs. I'm sure it will be even better when it is higher up. Thanks for the video. 73.
Nice work Paul! I wish I had an antenna analyser back years ago when making antennas. Would have had some more success and less frustration with some designs. My tip is to put some Loctite Red on the BNC socket nut to prevent it from working loose with connect/disconnect cycles. Same with the nuts on the eyelets used for the dipole supports. 73's!!
Beautiful work Paul. SWR looks good for 10m. I wonder where we can get colored enameled copper wire. It's not that easy with ebay and aliexpress given correct dimensions.
I Only make things for my Shortwave EF Long Wire Antenna.. If you use it (or make it), then I know it's good.. 🏆👍 (My 64:1 UnUn 140-43 Material) 18 AWG (Solid Enameled Wire) 3 turn Primary crossover Winding Style (ROCKS) the Windings are (3+9 Total 12 Turns. Then crossover to another 12 Turns.) along with a 100 pf 3 KV Capacitor.. (A Bit overkill for Size).. But, That's OK. 💪.. Now I'm going to add this 1:1 Common Mode Choke BalUn.. Because I hear it will help reduce the EMI .. (Just another thought ?? 🤔??..) I wonder how Well using Litz Wire would work to make an UnUn or Ballun.. (One Day I will Get a VNA) to Verify my Guess work. Thanks for Posting this to show it's Excellent Performance.✔73s
Please write the dimensions of the plastic box for installation, I want to order one, but there are a lot of them and it would be good to know the dimensions of yours.
The number of turns and the ferrite mix both determine the choking impedance of the balun for a given frequency. Do a quick search online for "karinya common mode chokes" and you'll see some charts that answer your question. 73
Very good work, Pavol 👍🏻 Maybe you can try making an "fan dipol", so you don't have to switch wire connection between 10 and 20m band. 73's Stefan DG4RBS
@@adistef The bifilar windings become a transmission line. All transmission lines have an impedance, and that impedance is based on both the spacing between the wires and the diameter of the wires. In this case, those wires form a 100 ohm transmission line. By using TWO 100 ohm transmission lines in parallel, we now have a 50 ohm combined total, which is a perfect match to our 50 ohm coax. Each side is wound opposite from each other so that the magnetic fields oppose and cancel out. Hope that helps. There are many good videos on how baluns work if you search YT. Take a look at TRX Lab as he explains it well. 73
That is a poor way to make a 1:1 balun. By connecting those 2 pairs in parallel, you decrease the common more impedance and the inductance by half just like paralleling 2 resistors together. A better way would be to use RG316 coax and wind as many turns as possible on the toroid. It is much easier to build and much more effective. Use mix 43 cores for 80 meters and up and mix 31 for 160 meters.
With RG316 you will get max.5 turns on to this small toroid... what's the point of this then?? Small size of BALUN was the reason of chosing this design. I can put this BALUN in to my pocket 😊
@@OM0ET A balun does no good in your pocket, I would build it right and put it on the dipole instead! Have you measured the common mode impedance of your tiny balun? It's not going to be much! Use a single pair of wires and you can get more turns on it and more CMI!
![ROSÉ(로제) - APT. (Band VER.) (With. 이영지) [더 시즌즈-이영지의 레인보우] | KBS 241129 방송](http://i.ytimg.com/vi/IW8qaemx74g/mqdefault.jpg)
Thanks, yes this one works well. Finished one this morning and used it for 10M POTA activation today. Got a few contacts , not the best reports but I had only 5w and had forgot my telescoping pole so did not get it too far up into the trees. :-) SWR was just around 1.1:1 so all good there at least. What was a bit strange is when I first tested with a 50 ohm resistor across it showed almost 2:1 so I was a bit sceptical then, but worked out very well with real wires!
I think one of the most enjoyable parts of the hobby for me is making antennas. Good job on such a detailed video :) 73
I've been watching your videos for more than a year... So much useful information! I'll be soon embarking in the adventure of getting my ham licence. Your videos will help me build my own gear. Thank you for what you do. 73!
Thank you! I am so happy that you find my videos useful 😊👍 and I hope to hear you soon on the bands with your own callsign! 😉 Best 73!
Excellent project! Good to see how well something simple but built performs. I'm sure it will be even better when it is higher up. Thanks for the video. 73.
Thank you! Yes, this low hight was just for testing purpose, but higher antenna would work much better, especially for DX. Thanks 4 watching! 😉
Nice work Paul!
I wish I had an antenna analyser back years ago when making antennas.
Would have had some more success and less frustration with some designs.
My tip is to put some Loctite Red on the BNC socket nut to prevent it from working loose with connect/disconnect cycles.
Same with the nuts on the eyelets used for the dipole supports.
73's!!
I am impressed by such craftsmanship, I just listen to radio channels and try to find them 🤣
Beautiful work Paul. SWR looks good for 10m. I wonder where we can get colored enameled copper wire. It's not that easy with ebay and aliexpress given correct dimensions.
Looks nicer, yes! But you could use permanent markers, I think!
Great job. Enjoyed this video.
Great explanation. Beautiful construction. 73
Awesome job 👍
MUY BUENO..!!
amazing explain my friend! many tnx! what do you think if i use if it for 6mt and 4mt band? 73,Ricky de IU1PZC
Can use UTP cable wire.
I Only make things for my Shortwave EF Long Wire Antenna.. If you use it (or make it), then I know it's good.. 🏆👍 (My 64:1 UnUn 140-43 Material) 18 AWG (Solid Enameled Wire) 3 turn Primary crossover Winding Style (ROCKS) the Windings are (3+9 Total 12 Turns. Then crossover to another 12 Turns.) along with a 100 pf 3 KV Capacitor.. (A Bit overkill for Size).. But, That's OK. 💪.. Now I'm going to add this 1:1 Common Mode Choke BalUn.. Because I hear it will help reduce the EMI .. (Just another thought ?? 🤔??..) I wonder how Well using Litz Wire would work to make an UnUn or Ballun.. (One Day I will Get a VNA) to Verify my Guess work. Thanks for Posting this to show it's Excellent Performance.✔73s
Please write the dimensions of the plastic box for installation, I want to order one, but there are a lot of them and it would be good to know the dimensions of yours.
hi
how to make a balun for 75 to 50 Ohms for 2.4 GHz WiFi ?
Great video, very interesting. I follow your channel, subscribed, always like.
Very nice!
I think the earth in your yard is highly reflective Paul 🙂
You don't believe in a good antennas? Hi 😃😃
Thanks for the video! I was just looking for instructions yesterday. Are the 12 turns important, or does it just have to be equal turns both sides?
I believe more turns you have = lower RF current on the coax shield will be 😉
The number of turns and the ferrite mix both determine the choking impedance of the balun for a given frequency. Do a quick search online for "karinya common mode chokes" and you'll see some charts that answer your question. 73
Hi! Why does it need to be on bought sides? I have seen ones made just wrapped on one side not with coax but parallel wires. What is the difference
Very good work, Pavol 👍🏻
Maybe you can try making an "fan dipol", so you don't have to switch wire connection between 10 and 20m band.
73's Stefan DG4RBS
@@adistef The bifilar windings become a transmission line. All transmission lines have an impedance, and that impedance is based on both the spacing between the wires and the diameter of the wires. In this case, those wires form a 100 ohm transmission line. By using TWO 100 ohm transmission lines in parallel, we now have a 50 ohm combined total, which is a perfect match to our 50 ohm coax. Each side is wound opposite from each other so that the magnetic fields oppose and cancel out. Hope that helps. There are many good videos on how baluns work if you search YT. Take a look at TRX Lab as he explains it well. 73
Well done Paul. 73 OM
Bandung Indonesia stand by
Can I use other rings than the one you use? (as a core)
MAGIC
are you a professional engineer by trade ?
9:14 you are so pedantic! .. but I would have done that too .. 🤣
😆👍
Not à specialist in soldera !
That is a poor way to make a 1:1 balun. By connecting those 2 pairs in parallel, you decrease the common more impedance and the inductance by half just like paralleling 2 resistors together. A better way would be to use RG316 coax and wind as many turns as possible on the toroid. It is much easier to build and much more effective. Use mix 43 cores for 80 meters and up and mix 31 for 160 meters.
Sounds like it's working well to me
@@AcidOllie Based on what?
With RG316 you will get max.5 turns on to this small toroid... what's the point of this then?? Small size of BALUN was the reason of chosing this design. I can put this BALUN in to my pocket 😊
@@ironton655 ruclips.net/video/8MibznEtrTE/видео.html
@@OM0ET A balun does no good in your pocket, I would build it right and put it on the dipole instead! Have you measured the common mode impedance of your tiny balun? It's not going to be much! Use a single pair of wires and you can get more turns on it and more CMI!
Pfftt...
nonsense