End Fed Antenna Magic: Incredible Results with a VERY Long Wire Receive Antenna
HTML-код
- Опубликовано: 7 янв 2023
- A Full Demonstration and Exploration of How We Can Improve Reception. This is a full demo! Fantastic bit of science here - you will love it. Discovering the Amazing Capabilities of Predictive Science: I predicted some good receive ability - but I wasn't prepared for this. What else can we do to improve it again? Maybe we should transmit through it too! Please let me know what you think! Here's the links:
• Ham Radio Livestream o... - Original Stream these clips came from
• Fascinating VERY Long ... - Very Long Wire - Original video
73
Callum.
More videos:
▶️ • Antenna Modelling Antenna Modelling
▶️ • Tips and Tricks Tips and Tricks
▶️ • Antennas Antennas
▶️ • Live Streams Live Streams
▶️ • Commander World My Stuff
▶️ • Foundation Training Ham Radio Training 
Наука
I believe you are doing more for the future of ham radio than 99.9% of the rest of us. Thank you again.
I do this for me - but it's fun to share too!
Thankful you like to share.
When I was a 15-16-17 year old I had an HF radio and I would listen during all of my down time and every single time I heard hams chatting about antennas, antenna testing, tips/tricks, debunking silly designs, etc etc etc. Your series of antenna testing videos are what I need! It wasn't until you tested the vogue LOG antenna that I actually decided to try it. Keep it up Cal!
Nice one Bob!
During Lighthouse Weekend we use a 400+ foot long end fed antenna. We were located on a cliff about 100 feet above salt water. The antenna was supported by a 40 foot tall flag pole in the middle. To date it was the best antenna we have used at this location. We were at the Horton Point Lighthouse in Southold, NY
Being an End-Fed guy currently... I will now be buying a DX Commander because of your fair review. Thank You!
Have confidence :)
Nice one Callum! I once had a 1000 feet Beverage at 5 feet above the ground, pointing to the USA, in a field sloping to the north-west. I did some pretty good measurements, and it seemed that it was giving me about 20dB signal to noise advantage over my transmit vertical on 80m trans-Atlantic! It was lovely to hear the delight in the voices of the state-side guys with their "apple-tree" wire antennas! 😀
Yes, I'll bet that was a delight!
Great video Cal, thanks for doing what some of us cant do, no room for a long wire. looking forward to more of this experiment with interest
I’ve often wondered what a real long wire would do. Great presentation.
Very impressive. I enjoy these antenna R&D videos. Please keep them coming. Can't wait to see the other heights and end grounded.
Thanks, will do!
Superb again Cal! Your enthusiasm is contagious 🤠
Haha.. You need to feel sorry for Wendy! :)
I have a square loop on the ground, 40 meters on a side. I am always amazed at the clear signals when it works. Good show Callum. 73
Thank you for investigating the transformer end feds. I love my homebrew transformer and wire.
Very nice work, Callum. Looking forward to following experiments with this loop!
More to come!
Congratulations on a great antenna project... I love it when a plan comes together!
Thanks!
I will have to live vicariously thru you on this one. Wish I had access to enough space to give it a try my self.
A couple RX antennas I have is a 450ft loop on the ground, using a home-brew binocular torroid 9:1 transformer, and I also have a nearly 500ft beverage antenna, 7ft off ground, oriented towards Europe. I left my beverage "ungrounded", or without termination on either end, which enables it to be bi-directional on the RX signals. Both antennas are 14AWG stranded copper wire, and fed with 75ohm RG11 coax. Both are great tools in the ham radio tool box. My beverage, hands down, is my best RX antenna bringing weak signals to the forefront simply by reducing noise ratio from the signal. One TX antenna I use is an EFHW cut for 160m, 64:1 transformer, put up in an inverted-L configuration, also made of 14awg stranded copper wire.73 and thanks WD9M
Lovely!
great stuff about time lad keep it up 73s
This video is fantastic. Amazing experiment. Thanks Calum!
Glad you enjoyed it!
Thank you for these insightful and informative comparisons! I've been thinking about setting up something just like this and now I'm even more motivated
Do it :)
Just found this channel. I live for antenna experimenting and I'm loving your content thus far.
Welcome aboard!
This sounds like a fun project.
Brilliant! That length of wire did the trick! There’s always more to learn about this hobby. Thank you!
You bet!
Nice to see you so excited about your experience, which is what the best of Ham Radio is all about.
Couldn't agree more!
17:59 Bits of wire... I wholeheartedly agree! I'm still "young" in ham radio, but that comment resonates with me a LOT as I don't run an amplifier. Thanks!
Cal I just had a conversation with a friend that has an end fed pointing east west and how he can hear Vancouver from his farm just outside of Moose Jaw. We didn’t understand why he could receive well along the length when we understood the transmit signal is strongest broadside to the wire. I still don’t understand but you just proved it’s not uncommon. Cheers from Moose Jaw
Tim VE5THF
Coming back to the hobby young man, this video is f*** epic !! Glad to see you’re fit and well brother ❤❤
Appreciate it!!
Wonderful experiment and demonstration, really goes to show how much a quiet receive antenna helps. Not just signal to noise but it's also easier on the ears. 👍
Yes, exactly :)
Absolutely brilliant and so enjoyable to watch. Every time you walk around a field with a reel of wire, sometimes in the cold or drizzle, you post a video, and it feels like we’re there with you! You continue to experiment with ‘things radio’, (which, as we know, is the purpose for which we were all granted amateur radio licenses), and you share your results, good or bad, with the rest of us, to increase our knowledge. For this, I thank you, and long may you continue to make these videos…73.. John..G4EIJ
Yeah, I know.. The colder and wetter it it for me, the more you enjoy it! LOL
Thanks for sharing the results of your work.
No problem 👍
This was actually exciting 👍👍
Absolutely fascinating. Yet another great video
Thanks again!
Your testing helps us in our ham radio practice. I am a visual learned so videos are priceless
Perfect!
Very interesting and great that you've got the space to try this out for the rest of us. I'd love to see what transmitting on this antenna would be like
Yes, we'll have to give that a go!
Very good experiment. Thanks for posting. Love the long wire antenna, often underestimated.
Thanks for watching!
Excellent, looking forward to your other videos on this
More to come!
Wow... I'm about to put up a long fence around my property. Thanks for doing the experimentation. Really looking forward to following the progress.
Nice
Nice one Callum, you might also want to run wspr on that antenna for 24 hours and see what shows up on the map!
That's a good idea!!!
This is very interesting experiment thank you and I look forward to your future antennas
Yes Peter.. I'm loving it.. Already planning a switchable array..
Great video Cal. See you Friday for the livestream.
Thanks for the best source of information about end fed antenna as well as on 'Beverage' antennas. Just started to experiment with long wire, but my backyard is small and neighbors are noisy (including my own house). So far, long wire antenna do not outperform simple dipole, but hope to rise wire as much as possible to get more out of it. Thanks again!
Hi Cal! This is the content i love your channel for! Hope to catch you again on the air :) .
For sure!!
Excellent video DXC, it lends a whole lot of credibility to the fact that you can use a chain link fence, barbwire fence line on a farm, a railroad track, the options re limitless. It's great to see you involved in the experimentation of long wire for RX & TX. I believe you have touched on a new and advanced method of using home made or existing long wire antennas for ham radio...go for it my friend, can't wait for the next video....:-) KI4TOL 73s
Yes, we need to try just the fence next!!
you are amazinig Callum 😀 im doing some tests like you , to find out with antenna will be best for me. I love discovering new experience
Have fun! I love re-discovering stuff..
Excellent!
This video was awesome!!! Thanks for being entertaining and informative. Amateur radio needs more Elmer’s like you.
Wow, thanks!
Hello Callum: I love your energy as well as your continued strive for bringing us groundbreaking antenna information + the digital data thru your videos. Most hams think they know antennas but in reality it's what there buddy said or out of the ARRL HANDBOOK. O'l chap please keep on kicking it up,
73's , good health, 👍, God Bless. TMP, Unit 22 from N.J.
Erergy.. Yes, even though I might be wrong sometimes :)
Now this has me thinking how I can run a long long loooong wire here... very interesting info and tests .. great job Callum!!
Go for it!
Inspired me to have a go at this, have the 64:1 built now, wire is ready. Just going to be 1 to 1.5 meters off the ground right now but looking forward to testing! *Now if it would quit snowing and do springtime that would be swell*
I've always enjoyed the older books, and not just on subjects like this. In the days before the internet and whatnot, it was more about making do with what you could actually get your hands on, as opposed to what you could afford. It is always neat to go through those old books and see the things that we have generally moved beyond and kind of forgotten over the years, but are still very valid and useful today. There's a lot of that "old school" stuff I learned over the years that I still find incredibly handy in my job as a bike mechanic, despite all the electronic doo-daddery they absolutely jam into those things these days.
Very, very cool stuff. Really looking forward to see what else you dig up from the book.
Yes Thor.. We will try a few more!
Very interesting indeed. I experimented with a 40m bev, then un grounded the end into a end fed, 40m rx was fantastic compared to the vert into eu. I then in a smaller garden put it back up, only 20m long, still rx on 40m was better than the vert. Both 1m high.
I look forward to your future experiences with this very fascinating ant.
I just bought a 2.5 acre lot with a chain link fence around the perimeter. I am going to try this technique. Thanks so much for the inspiration Cal! 73 K6TjO formerly of CA now residing in OK
Especially well done Callum, this is a prime example why most of the contest stations use beverages/recieve antenna's, "Phat" example of a good tech example/educational story. Respect!
Good point!
For some reason, this video is just hitting my feed. Fabulous video. I am so encouraged by your spirit of experimentation and innovation. This is what originally attracted me to the craft. I agree wholeheartedly with your thoughts on the need for more focus on antennas as a key--perhaps THE key--component of the experience.
Although my CW skills are weak, I can imagine that this antenna would have just as dramatic impact on CW-receive as it does for SSB.
Yes, I am sure too.. Imagine being able to hear that well on CW..? Hell, you could get anywhere! :)
Just thought I'd make a quick comment on this gentleman. I wrote to him once about something I don't even remember.
He actually wrote back in under ten minutes. I had never previously written to him either.
He's a very down to earth guy. Very innovative as well.
Glad you had a pleasant experience..!
This is really cool. Thanks for the share.
You bet!
Another great video Callum. I only wish I had the room to do a160 meter end fed ( and a radio with a receive any jack). Looking forward to more testing. 73, N2IMB
That would be cool!
I experimented with a 49:1 and a wire as long as I could afford. The transmission is highly affected by the height, as expected. I used a very long fishing pole in the middle so it looked like an inverted V. Transmission and reception improved dramatically. Time and weather didn't allow me to continue experimenting but I have a 20m wire to install on top of my apartment, about 20m above ground. I have high hopes in this configuration
Awesome stuff Cal. I'm just back into the art after a 10+ year hiatus. Working on getting it right this time. Happy New Year and thank you for the inspiration. '73 de VA3HIE
Great!
Wow this is fascinating. I know very little about this subject but I follow you
Welcome aboard!
genius brother really cool
wishing you the best
God bless you and family
Thanks, you too!
Good stuff. Can't wait to see more!
Working on it!
Brother you did it you got your 3to 4. More DB with the long wire wow. Works great. Thankyou. KC9LRA. Bob. . Indiana.
Yeah, it's truly wonderful..!
Very interesting and clearly successful experiment. I use a random long wire for receive but in conjunction with a qrm eliminator, not the same but still helps. Great video Callum!
Great tip!
THIS IS AWESOME. I operate portable (SOTA) so every activation is a set-up in a new location, new conditions, varying ground conditions... etc. I'm also packing light so I don't have a bunch of meters/analyzers with me and the majority of my time is eaten up by the drive and the hike. So... watching your in-the-field experimentation with those variables made me feel A LOT better about my gear. Everyone acts like their "No-Tune Antenna" acts the same on the summit as it did when they analyzed it at home. THIS VIDEO explains that... no, there are so many other variables other than your antenna length when you deploy. Grew leaps and bounds watching this several times. Thank You!
Man with the tractor and hedge cutter will love you Cal. Interesting results I have a 240 m wire at my portable location. It does receive very well.
I did ask landlord if I could trim all these and he wasn't keen... Grrr.
Excellent video, quite interesting. And you have a great diction for us non-native English speakers.
I shall never have enough space for such an antenna, but I've learned a lot from your experiment.
Thanks for the entertaining 20 minutes.
Thank you! 😃
Hello from Kentucky,USA. I’m a new amateur..enjoying your vids…
Welcome!
One of the local hams was big into DX. He had DXCC on all bands. He ran 4 beverages N S E W. All were up about 4 feet with wooden stakes in the ground. Each had a termination resistor. Worked great. Another great video 73 Cal.
Wow
When Callum started describing this I thought "Cool, a beverage variant, gotta watch this". But all band DXCC and 4 beverages. Wow indeed. That's dedication.
Awesome experiment, I will watch the rest while at work.
Thank you! Cheers!
I just watched your video and I must say the "enthusiasm"you have for science/experimentation/ and ham radio is inspiring ! soi want to share my experience with 160M end fed, 1/4 wave. An Elmer I know taught about this, 1/4 wave doesn't require a balun. I have since added 3 more wires to that same coax, at a junction point , 160M, 40M, 30M, 20M. They run about 15 feet vertical, then out to a tree limb, horizontal. I compared these to an OCFD that I had ran for 5 years, only HF antenna I had ever used until this. The End Fed were quieter than the OCFD. WHen I compared RX to the 1/4 wave 160M end fed, it receives better than the OCFD where it is resonant. Looking forward to the next videos in this series !
Yes, there does not seem to be ONE antenna that does everything :)
Interesting. In a local EMMCOM zoom meeting I was talking about listening. Listening is just as important as talking as you may hear something no one else does . Great stuff! 73 de KE5ES
So true!
Well done mate.
not sure how I got here but this brought back fond memories. in the last 60s I built a heath kit receiver (still have it and last time I checked, it still works on the original tubes!) and ran a wire out my bedroom window to a walnut tree out in the field, end fed. I used to listen all night real quiet so my parents couldn't hear, keeping careful records of where I could identify the sender. This was in California and I listened all over the world. Good ole days...
Great memories! And thanks for popping along!
Nice Intro Callum. 73 Joe
Very interesting! An antenna laying on the ground sounds exciting!
It is.. Mine is currently broken - I think I need to re-string it.
Hi Calem !! I've just come across you doing this really good bit here.. !!! Great, it's nice to see people learning and discovering the arts of antenna's.. I am a very old hat !! Merchant Marine Radio officer from the past ,, I was looking on the internet at how the modern day ham "looks" at wires antenna's of various descriptions. I was really amazed to see not much info at all !!! ,,,, and there you are !!! explaining the concepts,, through experimentation ,,, "well done" . It only gets better,,,, (good song that),,, thing can only get better !!!!.. At the moment I have 2 old fashion un-terminated V-beams, one is 320 mtr up at 40 mtr, and the 2nd is at 70ft and 120 mtr legs,, no1 points NW/SE,, no2, North and South over the poles,, not much in it really,, but amazing difference is signal strengths,,, I think when you get yours up a tad more, to lower the angle, the difference will be really there,,, to be seen.,, carry on, I will be looking with interest at your results,,,, my very best regards to you,, and your followers .. Carl
Hello.. I think your name might be Carl. Welcome.. Yes, I'm mucking about with wires! V Beams also fascinate me, not sure I have the room.. See you again soon, I absolutely LOVE your credentials!
Very cool and inspiring. Thanks for posting
Glad you enjoyed it!
I run a 80 to 10 meter 59:1 End Fed Half Wave antenna with about 132 feet long wire in a Inverted VEE up about 32 feet using a army surplus mast held up with a T-Post and rebar into the base wrapped with plumbers tape. I've had great results with this antenna, background noise is low. I also use a 20 foot counterpoise as well.
This is the kind of content that really inspires me with amateur radio.
Ah! Fabulous :)
I operate almost entirely portable. I've built and deployed dipoles, verticals and used hamsticks. By far, my best results have come from my homemade end fed and a 35 collapsible pole. I can deploy in under 10 minutes and work all of the US with very little effort with occasional DX.
I love the leg kick when you're throwing the wire.
Yes.. I think I almost took-off!
Very interesting mate. Keep up the good work
Thanks 👍
Great stuff Cal mate.. see you on the bands.. 73
FAB!!
Interesting stuff! So wild to see what a dead simple wire antenna can do!
Take care and God Bless.
Yeah! :)
Wonderfull! I will try. Thank ya Callum. HNY 2023!
Have fun!
Great video Callum
Thank you!
Great experience! I love endfeds!
Glad you enjoyed it!
Brilliant work, Callum. Idea direct thru to implementation !
As I watched your video, I kept asking, "Can I lay a long wire on the ground for the same effect, but without animals (deer and turkeys in my yard) clipping a wire at waist height?" And, towards the end, you bring that up as an experimental option. I love it !!
Yes, I think maybe one direct on ground.. More to come!
So fantastic! So inspiring!
Thanks so much!
This is brilliant, Callum, cheers! I've only recently begun to think about having a separate receive antenna. When I was knee-high to a hedgehog I used to string up longwires everywhere to try catching SW stations, and the occasional amateur operator. And despite the fact that I had no bloody idea what I was doing, I seemed to be able to pick plenty of low-level signals out of the noise. Fast-foward to when I got into ham radio, and once I learned about all these sexy new transmitting antennas, I just assumed (no doubt stupidly) that if they can transmit to the 3rd outer ring of Saturn, they should be able to receive anything! Turned out not to be the case. Anyway, this is really an eye-opener that takes me back to those wonderfully experimental days when I wasn't worried about being bloody precise or 'correct'. I happen to have a lot more land where I am now than I ever have before, so I'm really looking forward to trying some of these things out. I'm going to start with the LoG from your previous video (which you mentioned here at the end. Seems like it's way too easy to do, so I just have to try it!
Great comment.. Yes, conventional wisdom IS that the transmit and receive antenna should be same.. But hey, why not move into the past! :)
@@DXCommanderHQ And if it works, then all the better!
Nice job! Need more videos like this...cant wait to see the comparison to 160m loop and getting the eflw up in the air (and on the ground, lol)!!!!
Coming soon!
Excellent video Callum. I used 500 metres of electric fence cord as a Beverage at no more than 1 metre about ground, pointing at North America. The end was terminated in a potentiometer connected to an earth rod. The pot was adjusted to peak signals at the receiver. This was obviously a 2 man job, or at least man and daughter with mobile phones. The results were remarkable on 160 and 80, many local nets we audible in the US and Canada that were completely inaudible on my 160metre horizontal loop or 3/8 wave end fed for 160 (190 feet long, mostly at 40 feet high). It's great to experiment at minimal cost. The biggest expense was bribing the daughter to help me.🤣
Fabulous story! Thanks for sharing!
good video. I am going to build one for Xmit and Rec.
I get good results on my EFHW 49:1 , I have it mounted in a sort of sloping inv L, half is up around 55-60 feet and rest slops down to around 3 feet off the ground, I have the transformer there and grounded.
It’s got a ceramic capacitor in the middle to increase resonance on 80m without having to physically shorten it which would mess up the other bands.
It does 80-10m , I get good NVIS and good DX. Very happy with it.
When propagation is good I’ve no problem having qso on 80m.
Hello Mr DXCommander, ive copied one of your ideas, and I have made a loop on the ground with 4:1 in my garden; it works like a dream. Finally, I can receive stations outside the EU; I love the idea of a long wire and will wait for more tests and results; I may use this type of RX antenna when operating a portable QRP station. Best regards many 73,s de M7SZY
Fantastic!
This sounds like a terrific idea. I've been considering the same thing because when I was a kid... I had a short wave radio receiver and played with various antennas. It had about a 4 foot long telescoping antenna built in. However, I wasn't happy with the results it gave me. I started out adding bits of wire to lengthen and found I got slightly better results. Eventually I removed the telescoping part and tried a roughly 200 foot long wire connected to the swivel nub the antenna used to attached to. Running the wire out my window and horizontally through the tree tops. I found this gave me much better results for some signals but not so much for others. I didn't understand at the time why that was though...
With that in mind, I have thought about trying a large horizontal loop as a receive only antenna.
Wonderful memory!
It's not that older information has been forgotten. It's that sharing that information seems to turn in to an argument. The massive influx of new hams over the past few years has seemed to breed a "buy a plug and play solition" mentality with a lack (and sometimes fear) of experimentation. Thank you for stepping out of that box!
Yes, mandatory!
I made a 160m square up 4m fed with 300ohm twin lead for receive only. Absolutely fantastic!
Nice!
Hey Callum, what a great video and just to listen to the US on receive antenna is awesome. I know in my small yard. I’m not able to have an antenna that long. But I am very fascinated. Just a simple wire what you can do with that. Cannot wait to see what other experiments with the receiving antenna will be like. Take care and thank you for sharing the video.
WD5ENH
Steve
Steve, I admitted in the video that very few of us have the room, I know.. But it's fun to be educated.. And maybe the sort of thing we can for Field Days..?
Interesting experiment for sure. I also like to refer to the older antenna books too. There are some interesting and simple ‘forgotten’ designs in those books. It would be very useful just to check and eliminate any coax feed differences between the antennas (perhaps swap them over and conduct similar experiment just to be sure one coax feeder hasn’t gone ‘soft’). I’ll keep watching with interest. Happy New Year!
Nick M1DDD
Yes Nick. Good idea..
Another fantastic vid
Thanks again!