Can a LOOP antenna make HF contacts ? | K7SW ham radio

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  • Опубліковано 6 жов 2024

КОМЕНТАРІ • 108

  • @hamradiowithkevin
    @hamradiowithkevin  Рік тому +2

    Where would YOU try a Mag Loop antenna ?

    • @lasantiagoa
      @lasantiagoa Рік тому +2

      I have the F LOOP 3.0 in a very controlled apartment in Zürich. Working beautifully, and the only reason why I'm able to get on the Air on the apartment right now.
      How are you able to show the SWR on the KX2 while tuning the loop?
      73 de Luis, HB9HJU

    • @pd4dd71
      @pd4dd71 Рік тому +1

      Close to the shore line or near our canals. great loop u have there. sir . 73 subbed

    • @thestonerguy5276
      @thestonerguy5276 Рік тому +3

      Just about anywhere. I have the Chameleon F-Loop 2.0 and it's used daily here in the shack. SWR reading are never over 1.5:1 covering 80-10m. As you mentioned, the nulls are a Godsend for knocking down noise levels. When the weather isn't killer (SE Texas, at a highly humid 90-100 degrees) I'll take it down to the front yard or driveway, in the back. I've never officially done POTA, but I've taken my IC-705 + loop to some local parks which provide excellent shade. Hamfest setups in the tailgate section brings a lot of attention to my table as well.The great part of a mag loop is that you're no longer in need of ground radials, poles, stakes, or trees ('cept for shade), and because you are actually tuning the variable capacitor there is no need to drag along an AT. I use a tiny A/B coaxial switch box that's used at home or elsewhere. Position "A" takes the antenna straight to the rig, while Position "B" diverts it to one of those very lightweight Rig Expert analyzer sticks. I in find it pretty easy to tune the antenna until the stick tells me "It's go time", switch to "A" and then - on the way to making contacts. For most occasions, 5-10 watts is all I need to have fun, indoors or outside. Enjoyed your video - Thanks! 👍

    • @amnchode
      @amnchode Рік тому +2

      I picked up a OM0ET MC-20 MLA back in Aug, and used it extensively until I was able to get my EFHW higher than 10ft...indoors even (I was able to WAC on 40M in my living room). Now, I tend to use my EFHW at my QTH and use the MLA for POTA activations, where it works great for digital work. Setup is a piece of cake...no need to hunt for trees, except for shade...no radials to run. Just mount it to a tripod, hook it up to the radio, and I'm ready to rock and roll. Plus, it plays well in areas/parks that are prone to having lots of noise, stores nicely into a 17" laptop bag (making it easy to transport), and only has around a 3ft footprint (tends to keep other park goers from walking into it).

    • @Orvulum
      @Orvulum Рік тому

      Anywhere... to get away from the plasma TV and other QRM that surrounds my house ! 😃 I've just started building a mag-loop, still waiting for a few more parts, but it's already under construction... Will be for 10 and 15 meters, made with scrap piece of 7/8 inch Heliax and a Vacuum Variable capacitor. I'll set it up to be motor tuned, but on the tripod, I should be able to tune it manually for portable operation. Looking forward to trying it out!

  • @darrellfreeman3577
    @darrellfreeman3577 3 місяці тому +1

    Nice presentation, really enjoyed it. Just getting back in hobby after 56 years (been in Military Service and State Department.

  • @coolspace2136
    @coolspace2136 Рік тому +4

    I have an AlexLoop mag loop set up by my second desk in the shack. My main rig is an IC7300 with an end fed wire. The second rig is the AlexLoop with my Xiegu G90. I hunt POTA at 5 to 20 watts with the mag loop and it works great. Another big benefit of the mag loop set up indoors is that you can operate during storms without worry of lightning strikes. When I go portable, I just put the loop fully assembled in the back of my van, toss in a tripod, and there's no delay when I get there. Set up and running in just a few minutes. I also find it very easy to tune. Thanks for the great video.
    73, W5DUI - Brian

  • @pthithic
    @pthithic Рік тому +5

    This was a really great video for several reasons. Does a great job showing operating
    Too many videos skip setup though, they assume you wouldn't care, but newer hams certainly would want to see more actual station setups

  • @randychapman2309
    @randychapman2309 Рік тому +3

    20 meters is a breeze with these. I regularly make contacts with my G90 from the kitchen/dining area.

  • @denelson83
    @denelson83 Рік тому +2

    I have the F-loop with the additional "power compensator" capacitor puck to increase the power-handling capability, up to 60W on SSB or 25W full-duty-cycle on CW or digital modes. I have tested this as a receive-only antenna so far, and was able to pick up very many FT8 signals on 20 metres. If you are going to operate on this antenna while sitting right next to it, you must sit in the nulls to avoid excessive RF exposure.

    • @hamradiowithkevin
      @hamradiowithkevin  Рік тому +2

      Using the Floop on high power, I would get the "remote tuner " option . It is safer and easier to tune.

    • @user-zp2tb1kf9p
      @user-zp2tb1kf9p 9 місяців тому

      A mag loop always gives me a nausea when sitting near to it and transmitting in just a few minutes.

  • @kd8opi
    @kd8opi 5 місяців тому +1

    I once did the math on these. Basically, what I remember is that you get 10% or less efficiency on 40m, about 20% on 20m, and 50% or maybe a bit more on 10m. You get about 2-3 db of gain in the plain. I’ve had success with them. At the last solar maximum, I made a contact in turkey. You’re probably radiating 5w on 20m. Not horrible. Is it worth $300? Probably not.

  • @kennethblackwell1137
    @kennethblackwell1137 Рік тому +4

    Well done Kevin. Great portable antenna....but I've worked many folks in an apartment, etc using one of these when they had antenna restrictions.

    • @hamradiowithkevin
      @hamradiowithkevin  Рік тому +2

      Thanks Ken, I am looking forward to trying an in home or balcony deployment to see how it works. You are proof that it does work👍

    • @va7dgp
      @va7dgp Рік тому +2

      @@hamradiowithkevin I live on the ground floor and use my for JS8call at 20 watts. I've used it for Winlink, Vara Chat all on the ground floor.

  • @dave-wk4t
    @dave-wk4t Рік тому +3

    I like mine. I bought it on a whim but it’s a solid performer.

  • @Johnyrocket70
    @Johnyrocket70 Рік тому +2

    I have a mfj telescopic whip out to around 102 inches leaning on a plant sticking out of my 2nd floor balcony at an angle in So Cal. Yaesu 991A 95 watts been hitting Japan on 10 no problem.

  • @AlanC.-ne4te
    @AlanC.-ne4te 5 місяців тому +1

    Great reports..I think this is the antenna I need..or at least some brand of Loop Antenna. Thank you so much. Love your channel.

  • @aerofart
    @aerofart Рік тому +1

    I really like this channel! Very well done antenna tests done in the wild is the next best thing to being there. It really gives a sense of what’s involved with setup, locating, operating and performance of the gear. Thanks, Kevin!

  • @floydteter4323
    @floydteter4323 Рік тому +1

    Tried a mag loop (the very one you're using here). Didn't impress me, TBH. Performance not even close to an EF random wire. Returned it after several weeks of testing. Glad to see it's working for you!

  • @stephanblochlinger2596
    @stephanblochlinger2596 Рік тому +1

    hahaha, min 5.40 - "the" human beacon on 28.425, it is also my indicator when 10m is opening! 73 from zs1ec

  • @temporarilyoffline
    @temporarilyoffline Рік тому +1

    Looks like a winner. I'm looking forward to the side by side with a similarly portable antenna.

  • @DK5ONV
    @DK5ONV Рік тому +1

    Wang Dannng. This is how we roll. Good job Kevin, the Mag Loop works as she should. Happy Monday into the Beehive State! 73 de YFUG 💯🙋‍♂

  • @vincentditizio8790
    @vincentditizio8790 Рік тому +1

    I have the older version of the Chameleon F Loop. Love it! Good for my hoa situation and very easy to set up portable. It's a nice easy day compared to putting up a wire. I use an antenna switcher and an antenna analyzer to tune. Even easier!

    • @hamradiowithkevin
      @hamradiowithkevin  Рік тому +1

      As much fun as it sounds like your having, you may like the next upgrade coming for the FLOOP series, almost an automatic tuning feature ! Video to come

  • @randalltom9750
    @randalltom9750 Рік тому +1

    I’ love the idea of a Mag Loop. High Q, directional, and effective with a KX2. One problem, price. I’m looking into building a home brew. Maybe I’ll bite the bullet, we’ll see. Thanks for the video, good stuff!

    • @stargazer7644
      @stargazer7644 4 місяці тому

      This is a very easy to build high perfomance mag loop - and it's inexpensive! ua-cam.com/video/B-tYtbTts0s/v-deo.html

  • @KD2ZTA
    @KD2ZTA Рік тому +1

    I have the Alex Loop and just ordered the Cha Loop 3.0. I love loop antennas and have had some amazing DX contacts on 10 meters with the Alex Loop. I am very interested in how the two will compare from the same location and height. When the weather is rough, I set up my Alex Loop in my 2nd story shack (by a window) and it still gets out. The real test for us will be when the solar cycle is low and the bands are more challenging. Thanks for the video, you talked me into taking the plunge on this loop (I got the TOTAL package). KD2ZTA

    • @hamradiowithkevin
      @hamradiowithkevin  Рік тому +1

      What a cool test you will get to make using those 2 antennas. I agree, loops can be real fun. Nice job adding to the antennas. You will be prepared.

  • @Locksnut
    @Locksnut Рік тому +2

    Another excellent video! I love my Alex Loop. Have you seen KB9RLW’s (another Kevin) homemade magloop? He also set up a signal meter on the loop for tuning by seeing max output.
    I finally worked you POTA a couple weeks ago! Was so excited I forgot to say my location! Lol. Very 73 de N4WLC Bill

    • @hamradiowithkevin
      @hamradiowithkevin  Рік тому +1

      Thanks Bill, I know what you mean. Sometimes it is hard even for me to recognise familiar call signs during an activation. Thanks for working me . 73

  • @1crazynordlander
    @1crazynordlander Рік тому +2

    Thanks for the video. The coax loop worked great. I can't wait for you to compare the aluminum to the coax. My loop is sitting by my feet in my shack in the bag it came in. Chameleon came out with a remote tuner servo for this 3.0 loop and later the 2.0 loop. It must be really slow turning. But there is no servo for direction. I think they are missing out on that feature.
    Someday I will have to try contact you on HF. I am done harvesting so I will have to get back on the radio and hunt POTA.
    Thanks
    Kevin KA0KAE

    • @hamradiowithkevin
      @hamradiowithkevin  Рік тому +2

      You bet Kevin,
      Looking forward to seeing how different the two are.
      73. Kevin

  • @johnwright2661
    @johnwright2661 Рік тому +1

    Great video. I would like to know more about the loop. Looks like you have different main loops you use.???

  • @CigarsOnTheAir
    @CigarsOnTheAir Рік тому +1

    That was awesome, thanks for sharing! Cheers and 73!

  • @krikka1
    @krikka1 Рік тому +1

    Great video, thanks👍

  • @larrypicard5969
    @larrypicard5969 Рік тому +1

    I have a number of loops, some homebrewed to varying degrees. MFJ make a few loop tuner boxes for example, MFJ-933C as well as variants of similar design that will handle 100+ watts. I have had good luck operating 40m, 20m and to a lesser extent 80m on portable loops and up to 100 watts from an FT-891. I have worked a number of Dx stations in Europe on phone and also on digital modes with loops.
    The best way to tune them is with a NanoVNA or some other antenna analyzer. Tuning for maximum noise only gets you to close to resonance. Loops are very high Q especially at lower frequencies relative to loop sizes. The useable bandwidth is a few KHz at any given setting. Loop tuning is also very to temperature, humidity and the local environment.

    • @hamradiowithkevin
      @hamradiowithkevin  Рік тому +1

      Larry, you have really had some experiences with loop operating.
      I think that is nice you were able to try so many variations. Thanks for sharing that story. Kevin

    • @o00scorpion00o
      @o00scorpion00o Рік тому

      I have the FT-891 also, if you might not already know then this might be of use to you.
      how I send a carrier is I press PTT and Up button on the mic and it sends a carrier and changes the meter from power to SWR, very convenient and it works great with the MFG-939Y auto tuner, saves having to go into menus and change the meter from power to SWR and from SSB to AM and Back.
      You just have to go to the menu and set the AM power level to 5 Watts.
      Check out my channel, I have the MFJ-935C and have had good success with it, made a couple of videos today.

  • @bassangler73
    @bassangler73 Рік тому +1

    I'm about convinced to buy a mag loop now 👍

    • @hamradiowithkevin
      @hamradiowithkevin  Рік тому +3

      Make, buy or borrow. A loop is worth adding to your "Antenna's I need to try" list

    • @bassangler73
      @bassangler73 Рік тому +1

      @@hamradiowithkevin 👍

  • @willieb6529
    @willieb6529 Рік тому +1

    i bolted a 10kv 500pf doorknob cap onto my cha-3 and can use 50W

  • @W-733_KWX
    @W-733_KWX Рік тому +1

    That's a great set-up and thanks for sharing; with that said i'd be concerned transmitting too close from a loop, imo i'd stay at least 7 ft from it at 20W and at least 15 ft at 100W, what do you think about that?

    • @hamradiowithkevin
      @hamradiowithkevin  Рік тому +1

      yes, RF exposure is a concern, you should definitely be aware of your limits. 90% of the time I use 10 watts or less.

  • @BobGarrett66
    @BobGarrett66 Рік тому +1

    Another great video Kevin! Thanks! How well does this loop breakdown for the back of the car. I’m guessing you were hauling it around in the bed of your truck?

    • @hamradiowithkevin
      @hamradiowithkevin  Рік тому +2

      Bob, good question! I have had this in my Mini van, my Jeep and the back seat of the pickup.IT all vits into a small duffel bag, Except for the aluminum loop and even that is not very big.
      I can not believe I did not show that setup, Thanks for the reminder. I will add that next time i make a loop video.

    • @BobGarrett66
      @BobGarrett66 Рік тому

      @@hamradiowithkevin Thanks for the reply Kevin. I’ve considered purchasing a loop but I’m not sure about adding a lot to the gear I take portable. I’ll do a little more investigating. I like the idea of having the antenna near you for making some adjustments on the fly. 73

    • @amnchode
      @amnchode Рік тому +1

      @@BobGarrett66 if it will help, my OM0ET MC-20 MLA will fit in a 17" laptop bag. If I didn't have my X6100 and battery pack in their own cases, I could fit everything but the tripod in it. As I like to keep them encased ;), I can fit everything in the laptop bag and a single strap tactical pack w/ the tripod in the "drink pocket" on the pack, easily transportable in a passenger seat and into the field.

    • @BobGarrett66
      @BobGarrett66 Рік тому

      @@amnchode Thanks Tim. That does help. I’m going to look into the loop Kevin has. I have a couple of Chameleon antennas now and have been impressed with the quality. I have thought about a loop but for some reason thought the size would be prohibitive for taking into the field, but if they’ll pack down to a size that will fit them into a 17” laptop bag, then I have a way to pack one up and transport it. Thanks for information!! 73

  • @Orvulum
    @Orvulum Рік тому +1

    Cool! 😎

  • @jozefbezan2501
    @jozefbezan2501 Рік тому +1

    Danke für das tolle Video.73,de Jozef OE1CJG.😊😊😊

  • @brentOhlookAsnake
    @brentOhlookAsnake Рік тому +1

    So every time you switch frequencies, you have to tune to the noice and then the SWR prior to transmitting to the other station ?
    Seems like a great antenna

    • @stargazer7644
      @stargazer7644 4 місяці тому

      Yes, mag loops have very narrow bandwidth, you have to tune them every time you change frequencies.

  • @Kody10538
    @Kody10538 Рік тому +1

    Hi, I came from your other mag loop video. Great video! I'm strongly consodering picking up one of these style antennas, as someone who travels for work to hotels and apartments and also does a lot of POTA. I have an 891 and an 817, and I've also been really wanting to get my hands on a KX2 so I've been really enjoying your videos. As far as tuning the mag loop...I see you mention sending a carrier. I'm still fuzzy on sending carriers. So I set the radio to low power (5 watts) and then just pick a random mode like cw or digital and just key down? Is that really all? As far as using a QRP rig like the 817, still set it to low power? Not sure what low power on the 817/Kx2 even amounts to wattage wise...Just want to make sure I know what I'm doing and do it correctly so that I don't damage anything. Thank you again.

    • @hamradiowithkevin
      @hamradiowithkevin  Рік тому +2

      Kody, thanks for being part of the channel, yes once you know how to turn the power down on your radio to lets say 5 watts. You would then select Digital or AM and push the ptt. you should at that point see the SWR reading ( if your menu is turned on) you will need to consult your manual for that part. ** on Yaesu, it will be the display that shows SWR /PWR. This will NOT tune your antenna, it just lets you know how far off or how close you have your antenna tuned. Feel free to email me if you have additional questions. ( look in the "about" section of the channel)

    • @o00scorpion00o
      @o00scorpion00o Рік тому +1

      I have the FT-891, amazing radio for the money and one of the most underrated radios in Ham Radio!
      Anyway, how I send a carrier is I press PTT and Up button on the mic and it sends a carrier and changes the meter from power to SWR, very convenient and it works great with the MFG-939Y auto tuner, saves having to go into menus and change the meter from power to SWR and from SSB to AM and Back.
      You just have to go to the menu and set the AM power level to 5 Watts.

  • @wk0djs-TheBigD
    @wk0djs-TheBigD Рік тому +1

    Hi, that is cool. I’m new to all this. What brand was that antenna tuner?

    • @hamradiowithkevin
      @hamradiowithkevin  Рік тому +2

      Thanks Dennis, there is 6:1 matching unit as part of this antenna. The antenna is made by chameleon antenna

  • @KevinMaxson
    @KevinMaxson Рік тому +1

    Can’t we just hook up a RigExpert and turn the knob until the SWR is good?

    • @hamradiowithkevin
      @hamradiowithkevin  Рік тому +1

      No, it doesn't really work like that. Plus, each radio is just a little different, so the sensitivity will be off . And leaving your coax connected and turning it this way, really is not that hard. You might be surprised. 73

    • @KevinMaxson
      @KevinMaxson Рік тому

      @@hamradiowithkevin You’re probably right. I tried it again with a NanoVNA, but couldn’t get anything other than infinite SWR. I’m hoping that putting it on the radio and just listening will work, though I’m not confident I can do it well.

  • @UABFWSS
    @UABFWSS Рік тому +1

    Do any issues arise if inner loop isn't in relatively perfect alignment with outer loop? Does the distance of inner loop top to outer loop matter much? Just curious about how finicky they may or may not be.

    • @hamradiowithkevin
      @hamradiowithkevin  Рік тому +1

      I wondered the same thing, with this loop at least, the way you put it together it is in the same position each time you use it. And that makes this loop fun to use.

  • @aarongriffin81
    @aarongriffin81 Рік тому +1

    What is an EFHW dipole? 9:48 Dipoles are center fed, EFHW is, well, end fed.

    • @stargazer7644
      @stargazer7644 4 місяці тому

      An EFHW antenna is also a half wave dipole. It is just fed from the end instead of the center.

    • @aarongriffin81
      @aarongriffin81 4 місяці тому

      @@stargazer7644 An EFHW is a monopole. A dipole, regardless of wavelengths, is a double pole. A dipole can be fed anywhere within the wire such as an off center fed dipole. If it is fed on the end it is a monopole or more known as end fed.

  • @n3yaz_us
    @n3yaz_us Рік тому +1

    What tripod are you using? I'm running an F-Loop 2.0 on an Amazon Basics and am nervous that the plastic will break soon.

    • @hamradiowithkevin
      @hamradiowithkevin  Рік тому +2

      Jason, I added to the video description also, Tripod is a Bogen Manfrotto 3011 Tripod with 3126 Fluid Head Made In Italy.
      Mine was used and broken for $6. The only place i can find them now is on Ebay for about $80 USD . I hope this helps. Kevin

  • @hgavhvhj
    @hgavhvhj Рік тому +1

    Can I connect the antenna to the ICOM 2300 device in the car and use it on the frequency (145.000) because I am looking for a long-distance transmission in the car

    • @hamradiowithkevin
      @hamradiowithkevin  Рік тому +1

      No that will not work. HF only

    • @stargazer7644
      @stargazer7644 4 місяці тому

      An IC-2300 is an FM radio. If you want long distance on 2M, you need to be using an SSB/CW radio with a long horizontal yagi antenna for weak signal work.

  • @BrianKolb71
    @BrianKolb71 Рік тому +1

    How about FM? 10 watts also? I was wanting to use mine on 29.600

    • @hamradiowithkevin
      @hamradiowithkevin  Рік тому +3

      Your welcome, My understanding is yes for 10 watts FM.

    • @BrianKolb71
      @BrianKolb71 Рік тому +1

      @@hamradiowithkevin thank you I didn't see it in the directions 73

  • @georgeluthy6512
    @georgeluthy6512 5 днів тому +1

    What loop are you using

  • @BretChilcott
    @BretChilcott Рік тому

    Great video! Thank you for sharing your knowledge. 73 Bret/AC0AE

  • @lf7961
    @lf7961 Рік тому +1

    What mount is used on the tripod to attach mag loop?

    • @hamradiowithkevin
      @hamradiowithkevin  Рік тому +2

      Attaching to a tripod is easy with the 1/4 20 camera thread on the base of the tuning unit of this loop. I use only a 1/4-20 thumb screw and hand tighten. Super fast and simple.

  • @brianfields4479
    @brianfields4479 Рік тому +1

    Wow, that's amazing, a directional ant which can be set up so quickly and get qsos like that, it's a winner. Thanks for sharing, 73 zl3xdj.

  • @popcorn7757
    @popcorn7757 Рік тому

    wow :O

  • @bill-2018
    @bill-2018 Рік тому +1

    I don't think I'd like to be that close to it.

  • @Johnyrocket70
    @Johnyrocket70 Рік тому +1

    That guy in Georgia calling cq on a loop recording jams 10 meters for hours at a time kc4** he doesn't respond to replies. Just transmits for hours.

    • @hamradiowithkevin
      @hamradiowithkevin  Рік тому +1

      And that is why I wanted to put part of his call in the video for those of us that know that 😉thanks for noticing. 73

    • @paulplack490
      @paulplack490 Рік тому +3

      Actually, I heard him reply to someone today! I also heard two others try to call him but he must have had the squelch up or been away grabbing a cold one. But yes - I laughed when I heard that clip, because anyone who monitors 10 knows that voice!

    • @brianveitenheimer4492
      @brianveitenheimer4492 Рік тому +1

      He has replied to me and told me to get some power. Basic jerk.

  • @DARTHDANSAN
    @DARTHDANSAN Рік тому +1

    Too bad I can’t do this with my UV5R lol

    • @carllavoie3804
      @carllavoie3804 Рік тому

      Yes you can with the following: www.amazon.com/dp/B09P8B6492/?coliid=I2DXHP17EGN2KO&colid=3UK9WF8E78QN0&psc=1&ref_=lv_ov_lig_dp_it

  • @WN8HGZ
    @WN8HGZ Рік тому

    Thanks wb8idy Swansboro nc

  • @AdamosDad
    @AdamosDad Рік тому +1

    ✋73's🎙 KD9OAM🎧📻📡

  • @pleasureincontempt3645
    @pleasureincontempt3645 Рік тому +1

    Works in the flat desert.

  • @pleasureincontempt3645
    @pleasureincontempt3645 Рік тому +1

    Can you hear me now? That’s the only thing that HAMS seem to do.

    • @hamradiowithkevin
      @hamradiowithkevin  Рік тому +1

      You might be thinking about my buddies on Verizon and Sprint.