Okay, I've been holding my breath for part 2 for over 3 years now. Fortunately, I have a cardiopulmonary bypass machine hooked up to my femoral artery that allows me to do this but I am still getting tired of waiting.
This is fantastic. Just walked through a motorcycle shop in Rochester, NY--you know, the old "cool" style shop with only old classic bikes--anyway, what did I find on the floor in the frame section? A tubing roller exactly like the one Jeri shows us in this video. Owner grants use with his blessing! I am in old-man heaven! Thanks Jeri!
I built a Magnetic Loop back in 2004. It was awesome. It worked great on 40m. I have the parts to make another one with a Vac. Variable and a motor drive. It's my winter project. I have a 50 foot vertical but honestly, I want the best power and match. I also like how selective the loop is. I work Qrp and love weak signal. Thanks for the video ! I am also watching and brushing up on my electronic basics. It has been fun watching your channel. cheers.
Outstanding video. I'm starting to think I live at the North Pole or something, I've never seen your channel before. Excellent build and looking forward to the next one. 73 Julian oh8stn
Hi Jeri, I have enjoyed your in depth videos in the past and am happy to see you are posing once more. Your knowledge and subject expertise is very broad and informative. Please keep up the good work and know that it is appreciate by many. Regards, Don
Very good instructions! The white cutting boards made of polyethylene(milk jug plastic) are a good cheap source of insulation material. And it takes threads well.
Cool - nice build! I've got just enough room for a 80m dipole, but not nearly high enough for DX. I'll be really interested to see what kind of Q (bandwidth) you get, especially on 160m. I'm liking it so far! 73 de Alan W2AEW
The Q was interesting because it changed radically with the coupling method I used. Using a gamma match was fairly high Q on both bands. I plan on exploring if I can get the 1/5th diameter loop and ferrite coupling method to behave better.
Hmm - that is interesting. I wouldn't have expected the coupling method to have that much of an effect. I hope you explore this in future videos - great job (and proud to have you among the ham community) 73 de W2AEW - Technical Coordinator for the NNJ Section of ARRL.
Great build. I can't wait for part 2 !! Please talk as much as possible about the math behind your design. I am currently working on loop made with 4" copper ribbon - hopefully maximizing surface effect but we shall see.
I've actually had pretty good luck with the 1/5-sized coupling loop, getting bandwidths similar to those predicted by, e.g., AA5TB's spreadsheet which can be found on-line. But, that calculator and my loops are all single-turn, and I'm not sure what the double-loop design does to the bandwidth. Good luck and 73, K7HKR.
Really really interested in building the antenna!!!! I hope part 2 construction and a part 3 use video are coming soon. Thanks for all the great info!!!!
Would be GREAT to establish a series of this type of illustrative videos as part of a concerted, collaborative Elmer/mentor program... LOTS to consider!!
So...you're a QRPer! It's fun if you enjoy designing and building your own antenna systems. A lot of times, achievable distances can be highly atmospheric conditions dependent, but still, when you get that 1,000 mile shot at .25 watts....it's kind of awesome. Then again, there's also a rather satisfying feeling of having 70kw of RMS RF at your fingertips especially when you've designed and built it all yourself too. =)
I see you have an IC-7300. I love mine. Can't wait for Part 2 of this series, as I have been considering building one for 80 and 160 myself, and am always looking for new ideas. In days past, hams would take pieces of dowel rod and soak them in paraffin to keep them from absorbing moisture, and build their open wire feed lines with them.
Not sure but I am thinking if you wrap a bunch of coil around that antenna, juice it and jump through it with a magnetic body suite on its going to transport you to a different dimension! If it works radio back your results Jeri! XD
Nice to see you back Jeri, what about using a 9:1 UNUN matching unit driving a long wire antenna, and having the unit in the roof space and bringing the wire out through a hole to a insulator some 1mle from the house.
Great Jeri nice video as a Magnetic loop user and builder sure enjoy it. looking forward to catch Part 2 , Oh!! follow you on the Transformer fields video ""had to backup few times "" Hay we got it lol lol scratching my Head a little, at one time a girl taring Electronic things apart dad Giving her more and here she is Young Lady, to my eyes ""75yrs old"',Showing and giving me info never too old to learn keep up the good work , I Built one of those few years back it worked great still using Loop antenna indoors now QRP, like you see how far I can go under 1 watt. 73's De Dale wb8woj
OMG!!! THERE YOU ARE!!! I wondered what the hell happened to you.... i found your videos on here and you just blew me away! i think you're awesome! (crush) but then- poof! no more videos :( untill now!!! happy happy happy :)
Encourage Jeri to make more videos. If you can afford the bandwidth, paste this link to her playlist in the address bar: ruclips.net/video/hzYaQDNl280/видео.html Leave it running while you are not using your computer. Turn off your AD blocker, click the arrows so they turn blue to "Loop playlist", put the settings to "Quality 144p" and "Speed 2". When Jeri sees the AD revenue increase, she may feel better about making more videos.
Hi, A slight improvement in the signal can be noted by pointing the "holes" of the loop to the generating source. The plane of the nulls of this antenna are parallel to the construction of the larger circle. You can use this feature to improve more good signal and attenuate noise source. Part of the noise can reach the tank tuned circuit by the coax cables through the common mode currents. A simple BALUN 1:1 installed before the smaller coupling loop can also greatly reduce noise. The balun must be BAlanced UNbalanced ... with turns ratio in 1: 1. Only producing the lag between the unbalanced antenna and the balanced coaxial line. 73 DE PU2SRZ
I think there needs to be more enforcement of shielding and drives to move back to the idea of fiber optic implementations and less wireless that isn't so well managed. Seems can create more jobs also that aren't so dangerous for enforcement operations. I suppose the JFK pervs next generation has taken hold and deviated systems to cause more jamming (not just Hollywood's), static, noise and interference. I'm sure there is more than one root cause.
The noise is lower for me using various loops than any other antenna. I usually have built full wave loops, some vertical, some horizontal. I have a decently sized piece of property. Could easily fit a 160 full wave loop. Dipoles have always been very noisy for me.
I am anxiously awaiting part 2. My favorite part of this hobby is antenna building. I have wanted to build a mag loop antenna for a while and you have inspired me to get off my couch and do it. I also went back to some of your older videos and really enjoyed them. My father worked with the team that designed and built the Digital PDP-8. I remember the old memory cores like the one you showed in one of your videos. Subscribed and can't wait for more!
Howdy Jeri, K4IVE, Kevin here... Your loop looks very similar to mine, except I used 3/4 inch copper water pipe and couplings to form a giant 6.5 foot octagon. I have 50 or so photos and videos of the build, so I know exactly how much work it is to chronicle a complicated build like this. It's amazing how well the modeling of the antenna system resembled the finished product. My capacitor is a massive homebrew contraption using 3/4 inch and 1/2 inch copper pipe in a compound trombone configuration. My tuning mechanism is all hydraulic, using all plastic components and water... What a crazy project, huh? 73! de K4IVE
So very happy to see you posting videos again; you were quite an inspiration back when I was in undergrad :-) I have an unfinished loop of similar diameter, though I opted for a single turn comprised of copper foil wrapped around 4" flexible poly drain hose, with (in theory) all the seams soldered. I really ought to get back to it, as it worked very well for reception, and now I have a 1000pF vacuum variable good for a few kV...
Awesome! Looking forward to the next video. I once made an octagonal 21ft perimeter mag loop, but making a spiral is a great idea. Thanks. What's the efficiency on either bands?
Wow! Glad you're doing videos again. You're a ham now, and you're doing a series on mag loops. This is the trifecta of awesome! Love the detail and video production work too. I look forward to the upcoming vids, and may tackle this in a scaled down QRP-ish in the future. Thank you, this is pretty rad!!!
Hi Jeri, good to hear that you uploaded a new video. Thanks. And also a video useful for radio listeners and radio amateurs like me. The magnetic loop has good properties, small/tunable bandwidth etc.
Jeri, love your videos. One thing though I want to point out ( @ 3:26 in the video) is that Hams don't "broadcast", we "transmit". Broadcast is generally accepted as a one way transmission where there is no expected reply like in AM or FM radio stations that broadcast their signals. Hams are almost always looking for a reply or communication with another Ham thus we transmit to each other.
Dearest Jeri Ellsworth: Love your stuff, and want to build this antenna-but I'd like YOUR advice/dissent on sourcing a variable capacitor (I'd rather not fail often and buy the wrong parts over and over (fail often) as my time and funds are somewhat limited and I have to fish too). You speak of them, but not _about them_ it in this video. Hope you are well and we get to see a PART 2 sometime soon. I'd like to build, test and tweak before Winter of 2018. You make really great videos. Thanks so much, 73.
carabela125 Is this figure based upon the assumption that 90 extra megawatts is the difference between mere time travel (1.21GW a la Doc Brown) and an intergalactic wormhole?
Well after almost 3 years either she forgot about it, has too many projects on her plate OR couldn't get it to work how she wanted and has dropped the project video series. Sad because it looked like a nice build.
Okay, I've been holding my breath for part 2 for over 3 years now. Fortunately, I have a cardiopulmonary bypass machine hooked up to my femoral artery that allows me to do this but I am still getting tired of waiting.
Bummer .... Oh dear just got interested in this kind of antenna and as I also have a background in racing cars I were hoping she would lead the way..
@@kristhompson8112 Try M0MSN's channel. Mike is building a lot of Mag Loops.
What about joining forces and research the next steps ourselves? She will be happy to have inspired others.
Me too .... but nothing found
Bummer, won’t bother watching or giving it a like or follow
This is fantastic. Just walked through a motorcycle shop in Rochester, NY--you know, the old "cool" style shop with only old classic bikes--anyway, what did I find on the floor in the frame section? A tubing roller exactly like the one Jeri shows us in this video. Owner grants use with his blessing! I am in old-man heaven! Thanks Jeri!
Jeri, it was great to meet you at Pacificon. Looking forward to the following videos.
Someday we'll have more than 30 seconds to chat.
I built a Magnetic Loop back in 2004. It was awesome. It worked great on 40m. I have the parts to make another one with a Vac. Variable and a motor drive. It's my winter project. I have a 50 foot vertical but honestly, I want the best power and match. I also like how selective the loop is. I work Qrp and love weak signal. Thanks for the video ! I am also watching and brushing up on my electronic basics. It has been fun watching your channel. cheers.
Outstanding video.
I'm starting to think I live at the North Pole or something, I've never seen your channel before.
Excellent build and looking forward to the next one.
73
Julian oh8stn
That's quite the spiffy intro Jeri! Thanks for sharing your projects with us in such an enjoyable and educational form!
Good to see more videos from you. Looking forward to the rest of this series.
Hi Jeri,
I have enjoyed your in depth videos in the past and am happy to see you are posing once more. Your knowledge and subject expertise is very broad and informative. Please keep up the good work and know that it is appreciate by many. Regards, Don
Very good instructions! The white cutting boards made of polyethylene(milk jug plastic) are a good cheap source of insulation material. And it takes threads well.
Nice project ! It might be a good idea to cut slots in plastic hangers for avoiding water bridges under rainy conditions.
Thanks for the suggesting. Very good point.
Cool - nice build! I've got just enough room for a 80m dipole, but not nearly high enough for DX. I'll be really interested to see what kind of Q (bandwidth) you get, especially on 160m. I'm liking it so far! 73 de Alan W2AEW
The Q was interesting because it changed radically with the coupling method I used. Using a gamma match was fairly high Q on both bands. I plan on exploring if I can get the 1/5th diameter loop and ferrite coupling method to behave better.
Hmm - that is interesting. I wouldn't have expected the coupling method to have that much of an effect. I hope you explore this in future videos - great job (and proud to have you among the ham community) 73 de W2AEW - Technical Coordinator for the NNJ Section of ARRL.
Great build. I can't wait for part 2 !! Please talk as much as possible about the math behind your design. I am currently working on loop made with 4" copper ribbon - hopefully maximizing surface effect but we shall see.
Absolutely. I had a lot of compromises around loop diameter and matching that surprised me.
I've actually had pretty good luck with the 1/5-sized coupling loop, getting bandwidths similar to those predicted by, e.g., AA5TB's spreadsheet which can be found on-line. But, that calculator and my loops are all single-turn, and I'm not sure what the double-loop design does to the bandwidth. Good luck and 73, K7HKR.
Really really interested in building the antenna!!!! I hope part 2 construction and a part 3 use video are coming soon. Thanks for all the great info!!!!
Would be GREAT to establish a series of this type of illustrative videos as part of a concerted, collaborative Elmer/mentor program... LOTS to consider!!
So...you're a QRPer! It's fun if you enjoy designing and building your own antenna systems. A lot of times, achievable distances can be highly atmospheric conditions dependent, but still, when you get that 1,000 mile shot at .25 watts....it's kind of awesome. Then again, there's also a rather satisfying feeling of having 70kw of RMS RF at your fingertips especially when you've designed and built it all yourself too. =)
Thanks for coming back Jeri I've missed your informative videos:) ZL2CIT
Very inspiring video. I am subscribing to watch more
Beautiful work, I'm anxious to see the second part.
I see you have an IC-7300. I love mine. Can't wait for Part 2 of this series, as I have been considering building one for 80 and 160 myself, and am always looking for new ideas. In days past, hams would take pieces of dowel rod and soak them in paraffin to keep them from absorbing moisture, and build their open wire feed lines with them.
Glad you are back making build videos!
Ha. I am not the only one wanting the rest of this series. Hope all is well.
N3QT 73
Not sure but I am thinking if you wrap a bunch of coil around that antenna, juice it and jump through it with a magnetic body suite on its going to transport you to a different dimension! If it works radio back your results Jeri! XD
I read somewhere if you turn the loop into a mobius strip it lowers the resonant frequency.
Nice to see you back Jeri, what about using a 9:1 UNUN matching unit driving a long wire antenna, and having the unit in the roof space and bringing the wire out through a hole to a insulator some 1mle from the house.
Great Jeri nice video as a Magnetic loop user and builder sure enjoy it. looking forward to catch Part 2 , Oh!! follow you on the Transformer fields video ""had to backup few times "" Hay we got it lol lol scratching my Head a little, at one time a girl taring Electronic things apart dad Giving her more and here she is Young Lady, to my eyes ""75yrs old"',Showing and giving me info never too old to learn keep up the good work , I Built one of those few years back it worked great still using Loop antenna indoors now QRP, like you see how far I can go under 1 watt. 73's De Dale wb8woj
OH Jeri I am tune in Now with the SUB Button lol Dale
Very cool! Nice work!
Thanks Jeri, will be following this project closely.
73,
N9MB
Hi Jeri - Thanks for this informative vid. Was there ever a part 2 to this video. I couldn't find one.
Looking forward to seeing the next videos
Hi Jeri, tnx for your nice Video about magloop antenna and in the past about sdr !!! Best 73 es 55 de Ralph DB 9 FQ C 31 KM
Would love to see more on magloops and designs!
Hey Jeri, When are you going to post part 2? We are eagerly awaiting your next video
Good project,congratulation
Yay, you're back.
Awesome! Excellent video! Take care! 73 de ve3hip in Welland Ontario Canada 🇨🇦
😊👍🏻......Beautiful project!!!! How far apart are the two pipes?
Great work! May I ask what simulation software you used for your research? I did not see any clues in the video.
Where's the PART 2 of this video?
I use only loop antennas,and openwire feed. rt/tx end 1:4 or 1:5 Balun.
JERI! - You are back :)
I would like to know where you purchased your tube bender from. I haven't been able to find one no matter where I look.
OMG!!! THERE YOU ARE!!! I wondered what the hell happened to you....
i found your videos on here and you just blew me away! i think you're awesome! (crush)
but then- poof! no more videos :( untill now!!! happy happy happy :)
great stuff 73s
Good work
That is an amazing view to have from your house, I'm jealous :(
Great Part 1!
Any plans for publishing 2,3...?
Thanks
Very nice!
Thank your for sharing this video. Looking forward to hear you on the air. 73 de sv1onk
Jerry where are the other parts of the 160m mag loop. I want to build one - KA5MAL
I am long time CW operator in Nevada, interested in building this for a friend in CA living on very small LOT
It's been 441 days since this video was posted. Are the subsequent parts to the video coming?
hmmm. I was hoping to go and watch part two. there is no part two.
Are the two loops in your antenna in series or parallel?
How high in the air on tower have you put loop ant
What happened to Part 2?
Where did you get the tube bender????
Is their a part 2?
why not angle the dipole?
What software did yo use for your dipole simulations?
EZNEC
You love building things ? Get QRV on 630m and 2200m ^^
part 2?
Encourage Jeri to make more videos.
If you can afford the bandwidth, paste this link to her playlist in the address bar:
ruclips.net/video/hzYaQDNl280/видео.html
Leave it running while you are not using your computer.
Turn off your AD blocker, click the arrows so they turn blue to "Loop playlist", put the settings to "Quality 144p" and "Speed 2".
When Jeri sees the AD revenue increase, she may feel better about making more videos.
A new Jeri Ellsworth video. Life is good.
Waiting for next "Magnetic Loop Antenna -Part 2".......WAITING! WAITING! WAITING! WAITING!
ME TOO AND HALF THE HAM GLOBE
I've been sat on the edge of my seat for a year waiting for part two. Hopefully I will not be too old to enjoy it.
Hummm been awhile,,she's working on better stuff now lol
@@m1cxf dont stop breathing lol
Me too! Did the studio cancel the series?
this was so cool!
HI Jeri. Very nice work! How is the "noise" at your location? I'm located at a very high point as well.
Noise on 160m is fairly bad on the dipole, but the high Q of the mag loop helps a lot.
It's pretty high here as well, even with underground power lines. Lots of noisy consumer electronics. It's good to see you making video's again... 73
Hi,
A slight improvement in the signal can be noted by pointing the "holes" of the loop to the generating source.
The plane of the nulls of this antenna are parallel to the construction of the larger circle. You can use this feature to improve more good signal and attenuate noise source.
Part of the noise can reach the tank tuned circuit by the coax cables through the common mode currents.
A simple BALUN 1:1 installed before the smaller coupling loop can also greatly reduce noise.
The balun must be BAlanced UNbalanced ... with turns ratio in 1: 1. Only producing the lag between the unbalanced antenna and the balanced coaxial line.
73 DE PU2SRZ
I think there needs to be more enforcement of shielding and drives to move back to the idea of fiber optic implementations and less wireless that isn't so well managed. Seems can create more jobs also that aren't so dangerous for enforcement operations. I suppose the JFK pervs next generation has taken hold and deviated systems to cause more jamming (not just Hollywood's), static, noise and interference. I'm sure there is more than one root cause.
The noise is lower for me using various loops than any other antenna. I usually have built full wave loops, some vertical, some horizontal. I have a decently sized piece of property. Could easily fit a 160 full wave loop. Dipoles have always been very noisy for me.
Welcome back!
Jeri.. where are the other parts to this video.? I want to make one too.. :)
It's Jeri!
I am anxiously awaiting part 2. My favorite part of this hobby is antenna building. I have wanted to build a mag loop antenna for a while and you have inspired me to get off my couch and do it. I also went back to some of your older videos and really enjoyed them. My father worked with the team that designed and built the Digital PDP-8. I remember the old memory cores like the one you showed in one of your videos. Subscribed and can't wait for more!
I’ve been waiting years for part 2. I guess if it hasn’t happened by now it’s not going to?
Howdy Jeri, K4IVE, Kevin here... Your loop looks very similar to mine, except I used 3/4 inch copper water pipe and couplings to form a giant 6.5 foot octagon. I have 50 or so photos and videos of the build, so I know exactly how much work it is to chronicle a complicated build like this. It's amazing how well the modeling of the antenna system resembled the finished product. My capacitor is a massive homebrew contraption using 3/4 inch and 1/2 inch copper pipe in a compound trombone configuration. My tuning mechanism is all hydraulic, using all plastic components and water... What a crazy project, huh? 73! de K4IVE
That's awesome!
Newsflash: we love you!
You can contact with Poland now. :)
Siana Gearz I
I can't find part 2
Are you working on part 2
Travis
K5HTB
So very happy to see you posting videos again; you were quite an inspiration back when I was in undergrad :-) I have an unfinished loop of similar diameter, though I opted for a single turn comprised of copper foil wrapped around 4" flexible poly drain hose, with (in theory) all the seams soldered. I really ought to get back to it, as it worked very well for reception, and now I have a 1000pF vacuum variable good for a few kV...
For those curious: the larger diameter of the conductor should lead to improved bandwidth.
zinckensteel
So 3/4 inch tubing will give better bw than 1/2 inch?
Yes, but that small of a change might not be noticeable in practice.
Awesome! Looking forward to the next part!
GadgetUK164 - Retro Gaming Repairs & Mods
Clearly we have the same great taste in channels.
It's getting tough to not see you on here. lol
+ElectronAsh LOL! Yep! Another great channel that we both watch lol
Looking forward to the rest of the series. How's it coming along ? KG5KYM.
A
Watching her is like watching The Return of the Jedi the long waited leader who finally returned
:D
Did part two get lost in the ether?
Finally she's back !!!!!! Missed your video's Jeri.
Awesome! Looking forward to the next video. I once made an octagonal 21ft perimeter mag loop, but making a spiral is a great idea. Thanks. What's the efficiency on either bands?
Hello Jeri, which tool are you using for the radiation pattern simulations?
EZNEC which is easier than most, but not super easy.
@@jeriellsworth even better is "4nec2" which can interface with ITSHFBC to produce signal strength prediction maps
Wow! Glad you're doing videos again. You're a ham now, and you're doing a series on mag loops. This is the trifecta of awesome! Love the detail and video production work too. I look forward to the upcoming vids, and may tackle this in a scaled down QRP-ish in the future. Thank you, this is pretty rad!!!
Hi Jeri, good to hear that you uploaded a new video. Thanks. And also a video useful for radio listeners and radio amateurs like me. The magnetic loop has good properties, small/tunable bandwidth etc.
6 months and still nothing. You are a tease.
Hi Jeri when will we see the next episode of your loop antenna make
she back
So glad to see you back :)
Great video. When will the Part 2 video be available?
I was wondering myself
YOU’RE BACK!
Ha Jeri , thanks for this build but when are we gonna get part II !
Best regards Carl.
Looking for 'build a 160/80 meter magnetic loop antenna - part 2'
Same here :)
This and Applied Science are my two favorite channels! In a perfect world you’d have done a collaboration by now :).
We're both in Silicon Valley now. :)
i love ben!!!
Jeri is back :)
Ummmm, it's been two years without updates. Were you one of those kids who rang people's doorbells and ran away?
Jeri, love your videos. One thing though I want to point out ( @ 3:26 in the video) is that Hams don't "broadcast", we "transmit". Broadcast is generally accepted as a one way transmission where there is no expected reply like in AM or FM radio stations that broadcast their signals. Hams are almost always looking for a reply or communication with another Ham thus we transmit to each other.
10-4 Good buddy... Sorry I couldn't resist poking a little.
LOL, I do the same thing= cb vernacular, your response made me bust out with a chuckle
Dearest Jeri Ellsworth: Love your stuff, and want to build this antenna-but I'd like YOUR advice/dissent on sourcing a variable capacitor (I'd rather not fail often and buy the wrong parts over and over (fail often) as my time and funds are somewhat limited and I have to fish too). You speak of them, but not _about them_ it in this video. Hope you are well and we get to see a PART 2 sometime soon. I'd like to build, test and tweak before Winter of 2018. You make really great videos. Thanks so much, 73.
fantastic tutorial
If I apply 1.3 gigawatts of power will that open a wormhole into another universe? Just kidding, welcome back !
carabela125 Is this figure based upon the assumption that 90 extra megawatts is the difference between mere time travel (1.21GW a la Doc Brown) and an intergalactic wormhole?
Well after almost 3 years either she forgot about it, has too many projects on her plate OR couldn't get it to work how she wanted and has dropped the project video series. Sad because it looked like a nice build.
OMG, she's a HAM now!
... and according to the FCC site she has an "amateur extra" license - that's the
Premium Unleaded Gasoline of amateur licenses.
You Guys Have So Much Tools That Are Epic Cool, I Make ANtennas The Old Way, With Soldering Iron And Other Shitty Tools :D