The Myantennas.com 8010P End-Fed Antenna, Part 1/2.
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- เผยแพร่เมื่อ 3 ก.ย. 2017
- Testing the Myantennas.com 8010P, which should be resonant on the 80/40/30/20/17/15/12/10m bands. The antenna is 130ft long, 39.6m. It is reasonably priced and well built, so if it works on all those bands will be a keeper. Please see: / radioprepper DISCLAIMER: The Radio Prepper logo (depicting a microphone) is indeed inspired from a famous flag created in 1775. It is NOTHING BUT a symbol of freedom and independence. It does NOT imply support to any political group. It does NOT imply, represent nor support any ideology with an intent on harming anyone. Freedom means freedom from persecution based on any human trait or belief such as, non exhaustively, race, gender, religion, sexual orientation or nationality. The Radio Prepper channel is a technology and science channel with a focus on preparedness and use of radio technology for disaster relief and small group communications in times of need. It is apolitical and open to anyone sharing the same interests. .
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I have made a few of these now and it is my, and my neighbor who has his Extra, new favorite antenna. It is all I use now for the entire spectrum for many reasons. Thanks again Steve Ellington. ;)
Hello Steve. Thanks again for letting me use your image. I built the 49:1 transformer, 21-3 winding for 80m. The video should be out on Monday, if the weather cooperates!
I own the Myantennas EFHW-4010-1K version and it's an outstanding performer. I have no complaints at all and would buy another one, with no hesitation.
I have never heard a bad review on them 👍🇬🇧
I have this same antenna. After shortening the wire by 3 feet by wrapping the wire back on itself, the SWR came right in on the upper portion of each band. I don't need a tuner. I love this antenna.
Very good TH-cam Gil on the END FED antenna =)
+Pat Hopkins Thanks Pat.
What I did for my mast (have the same one) is to cut a small piece of cordage, maybe 4 inches and put the cut ends into the opening of the tip with a small amount of epoxy. Now when I remove the cap, I have a small loop to grab and pull it out. That's a nice key you have there. I'm taking the CW Academy level 1 course now, so I'll be operating in CW soon!
+Ron C Great idea, or a piece of tape.. We'll set up a CW contact when you're ready!
I have one of these and it works well! My antenna is up 20 ft and in a 3 sided rectangle. Higest SWR at the ends of any band is 4:1 I shortened mine by 12 inches to center the best SWR near the middle of the bands. I do have mine grounded by a long ground rod at the base Seems to have no effect one way or the other. Great antenna, work lots of DX with it. I only contest rarely with my club mates, but never at home, other interests in radio too! Nice presentation
Thank you :-)
Hello, my name is Santana. I really enjoy your video and work. I live in a small city in São Paulo state, in Brasil. My license is PY2PBG. Congratulations from Brasil, my friend!
Thank you Santana!
Thanks for the video!
I've been thinking about their EFHW-8010 to use specifically for the lowbands from the home QTH this winter season. I usually use a dipole but an end-fed would simplify things with my tree geometry. Thanks for the video.
+AE5X Part 2 will be out soon...
I use this same antenna plus two others. The problem with using multiple HF antenna’s is that you run the issue of getting RF in the shack from the transmitting antenna going into the other antenna. When I use my other antenna, I unhook my EF because I have been told that my signal going out, when all three antenna’s were connected, was distorted with RF interference. I also found that the EF is very positional, meaning that you really need to get the distal end off the ground at least 30 to 40 feet or you’ll have ground loss issues. It is true that you do not need a tuner, which is a good thing. The EF will be noisier on some bands, particularly 80, at least in my shack. There are always trade-offs on EF antenna’s, they are not perfect, but they are cost effective and often work great most of the time.
Hello. I have not had too much ground losses issues, even using a 134ft HWEF six feet from the ground, but of course losses are there, just like a dipole. I see no reason why they would be noisier other than people using them often vertically.
You are getting better results than my 9:1 UNUN EFHW thats designed for 40 on up!
9:1 is for random/non-half-wave wires. You need a 49:1 or 64:1 for half-wave wires.
What a slick little analyzer! I enjoyed your video on the EFHF Antenna. New and refreshing from the EU area. I will watch more of your work. Can you tell me how to source the analyzer. 73 from W5GPA
Hello. Search for MR100 on Ebay.
The coil is there to enhance performance on 20m. I have the same antenna and it works great. It’s the only antenna I’ve used the last 2 Field Days. The now make a wire that moves resonance from the bottom of 80m up tp 75m.
Keep up the good work!
How far is the coil from the box?
@@AlabamaDad I would like to know as well. Looks like about 6ft. (2mtrs) or so. 6 turn coil. 1 inch form. 16ga wire (i believe.)
Correct.
Nice video. What is the antenna analyzer you are using in the video? I don't recognize it? thank you.
+WB0WQS MR100.
Yep
Sure do like your Clansman!
How much are they surplus?
+KF4LBG Around $300 minimum.
Hi Gil, A suggestion for your telescopic mast problem - drill a small hole through one side if the tip section (at the tip) and then tie a short piece of chord into a loop through the hole, works well for me. Great work with the channel and the videos, simply - thank you. Bryce, VK3NBI.
Hi, I made a 3D printed cap for the top..
I like the quality of this end-fed antenna! I am looking for an antenna for My Panasonic Shortwave receiver! So I will copy this one to see how well it does with international Stations ! My Panasonic 2600 is a real good quality device and has been called the best SW receiver! YES it is a loading coil I recognized it! Did you know Ms. Tourie Gimzel that ran the Beach and Sun Hotel on Tamyamy drive? My Aunt was the owner it's now the Burt Reynolds Convention center! Loved Sarasota in the 60s and 70s great place! Even better we did have to get a motel room! Renegade (WDX4 JPS)
Hi, didn't know her. Of course Tamiami Tr is very long! I miss Sarasota!
Hey Gill, great video, as always - like the ‘English’ jacket too, what make is it?
Highlander, found on EBay :-)
Have a good one
I have the 8010P as my base antenna and it works very well at only about 30 feet high and slopes one side to 15 feet and the feed point down to 10 feet. I often wondered if radials would improve it since this version requires no radials or ground at the box side like the regular 8010. I guess the coax shield is the counterpoise.
Maybe a counterpoise under it for NVIS...
@@RadioPrepper Good point. I'll try that.
Gil, can you put any half way on that balun? for example could you put on half wave for 160M?
I believe so.
I love the little s-meter
You mentioned that the case is large. Does the box house 2 transformers as the view of the back of the box shows two indents? Can you show the diagram you said came with the antenna.
I don't have it anymore. Maybe a transformer and a choke...
Great video and just what I have been looking at myself, some others that caught my eye too, all simular multiband end feds ultimax & vibroplex the other names.
With the Ultimax there is a choice of 2, 1 at 66ft and 1 at 24ft in length.
Now 24ft I can mount anywhere and would suit my set up fine, although homebase I would like to venture, so taking it down wouldn't be a problem, where 66ft is longer than my garden, would need a dog leg or such.
So ultimax 100 is 3/54mhz and will work just as good as the 66ft 1 with more wire, what am I missing here please, using a vertical multiband atm, works but I know a wire/longline would work better.
Thanks for any advice, interested in 7,10,14,21,28mhz
But 24ft is not a half-wave so probably a 9:1 to use with a tuner, not a 49:1 or 64:1. You will not get the same performance, probably not very good on 40m and near useless on 80m with a 24ft wire.
th-cam.com/video/0zF7bDoqkG4/w-d-xo.html
Thanks for the video, and yes I have the MFJ 941e, and as cheap as they are to buy, always nice to have 1 in the shack, or down the garden
RP, nice video. Can you make out the part number above "Made in Germany" ?
Well, It's on my roof now, so... Maybe when I take it down...
@@RadioPrepper Ok You can order this one by DX-Wire.de in Germany . i use als this one vor max 100 watts . but this one can cover the "240 " Amidons and ist also a good base vor dipols or endfeed ! By the way, like your YTs 73 DD0DR
Please note your tuner tunes the coax you still have the high swr only if the tuner is at the feed point or the other end of the coax not the radio end kg6mn
It amazes me how many hams don't know wtf an antenna tuner actually does, it just fools your transceiver into seeing a 2:1 or lower match and absorbs the reflected power. Most Extras don't even know this fact. Not surprising since in the US you just memorize the test and you're an Extra.
I'll be using RG 8 coax .
According to the FAQs on the myantenna website, portable antenna analyzers can give a falsely high SWR due to overload from strong nearby broadcast stations. Could this be true in your situation?
I doubt it. I never heard of such a thing happening. We'll see in part 2...
Right here on their website .myantennas.com/wp/f-a-q/efhw-antennas-f-a-q/ If I think about it, it's a very long wire and there's no tuned circuit to keep RF out of it at any frequency... Seems plausible.
The only thing nearby is a cell phone tower... Who knows. More likely a calibration problem..
I have the 4010P, and the wire is too heavy, what gauge wire is the thinness that I can use, max power is 100watts.. i was looking at wireman #26
That is what I use for my 135ft wire.
Muy buenas tardes, Radio Prepper, solo quiero mencionar que me guestan muchos tus videos, he podido apresiar bastantes de ellos y cabe destacar muy lindos los paisajes. El propocito de estas linea es preguntarte si tenes conocimiento de antenas loop magnetica, estoy investigando pero no sale mucho en internet o sea hay mucho pero eso mucho es informacion valida. Desde ya mchas, gracias, 73. LU2MAT
Hi, which spiderbeam mast length did u use for 80m efhw?
Hi, 12m. I wish I had a 15m for a half wave on 30m but the 12m mast is heavy enough as it it... Works well for inverted Vs.
6:51 Wow, that mast is really earning its pay today!
Yep, it's been great, pretty strong!
Thanks for the video. It was informative. I went to the myantennas website and they are predicting way better SWR across all supported bands. The highest SWR they showed on the website was 2.0 I am also trying to find a light weight, portable, end fed antenna for QRP voice and digital. Any suggestions?
+Mike Simpson I hope they make a QRP version as I suggested... I haven't heard anything... Otherwise look at end-feds from LNR Precision.
I have used this antenna exclusively on HF for over a year now. It is hung in an inverted-vee with both ends at about 30 feet and the apex at about 50 feet. I operate at 100 watts SSB and 25-50 watts FT8. At first, it would not tune on 17 meters. After adding 5 ferrite beads on the feed line it tunes fine on all bands from 80 to 10 meters (I have not operated on 60 meters). Performance is remarkable on all bands. Contacts often comment that they can't believe I am not running high power and a beam. Highly recommended. AD8DT
I wish they made a QRP version...
I second your opinion about a qrp version of this antenna. My experience with this Co. (myantennas.com) has been positive. Products aren't cheap (if you're looking for cheap knockoffs, you'd know were to look too!) but well worth the price. The balun box can be had from www.dx-wire.de, which's why it says "Made in Germany"
Great video! Love the hat. Who is John Galt???
+mdunnrt You're the first one who catches it!
mdunnrt
Altruism
John Galt is the engineer who leads the revolt of the producers against the moochers and looters in Ayn Rand's novel Atlas Shrugged. Read it!
@@kennethtalbott6961 went right over your head...LMFAO
Where did you get that antenna analyzer.?
+Ted D On EBay.
I know two extra class operators that swear by this antenna. Thanks for the video.
Extra class means little, but the antenna works very well.
@@RadioPrepper both of these guys have decades of experience with ham radios and honest. Personally your attitude seems a little condescending.
Just pointing out that Extra is just a piece of paper. Years of experience, now that counts...
We love the pREPPPPPPPEEEEERRRRRR
The basketball hoop frame is detuning it?
I suspect my cheap analyser...
F4wby?
Is your qth in Florida USA?
+KF4LBG Used to be in Sarasota, now in France.
I don't like Contest very much either Gill much prefer to have a good chat..I thought the ham on CW that you replied to could have had the decency to reduce his Morse speed to better match the speed you where sending at seems he was using a computer to send and not a key....I don't have any HF equipment at the moment mainly due to space for any Antennas and finding the money to buy a new secondhand HF right. ..it would be great to have a QSO with you one day even tho i am only in Liverpool UK lol....If you don't mind me asking Gill what happened to your forehead....another very interesting video Cheers 73 de Steve M0BFM ex ZL3LFC
+Steve Jones LOL, I had just woken up, it's an imprint from my pillow on my forehead! We could definitely try a contact on the air! gil@radiopreppers.com
Build a Magnetic Loop Antenna. I used one for years. They are great. Great from an apartment.
end fed antenna 49:1 balun (transformer) diy = just about free, make it to the size you need, its so easy.
Who makes your SWR meter in this video?
Made in China, found on EBay, MR100.
I've heard antenna s have to have a refictive surface electrical to radiate efficient ly .
Prc 320 , military radio . It's idiot proof .
Pretty much...
Best configuration is 40ft above ground, in a straight line configuration...
Perpendicular actually.
I got EFHW-4010.. works perfect.. Can some one explain the purpose of the coil on the radiating element ??
-vu3oum
It is to adjust the frequency for 10m..
@@RadioPrepper ohh ok.. Thanks
Can you please identify the Transcevier you are using ? Looks very interesting , and can it be purchased and from where ? , THanks
PRC-320 on EBay or www.clansman-radio.co.uk
That old, beat up radio you have looks so cool, I couldn` read the front of it, obviously military surplus!? Nato? Doesn`t look American. Thanks, just saw your channel. I subbed. 73, KC3BXZ Joe
+1fanger British military PRC-320.
Thanks, be well.
What is the radio from vehicle or backpack or??
Mostly portable operations, for me...
@@RadioPrepper originally what was it in I meant sorry.. Military isn't it?
Yes for the PRC-320 which is a military manpack radio. The other one is a KX2 portable radio.
@@RadioPrepper beautiful rig!
PL 259 connectors .
pourrait-il faire plus de blog en français?
Oui!
@@RadioPrepper mercis j'aime vos blogs en français très bien expliqué merci.
Il y en aura d'autres!
This type of antenna is perfect for radio scanner more than transmission, cuz impossible to get an optimal resonance with such types of antenna
It is possible if you can keep it away from other things...
I'd love to have one of those milsurp radios!
Thank you for the video!
How do you like the antenna?
73's de KF4LBG
+KF4LBG The antenna works well. I wish for a QRP version...
Oh , I forgot to ask about coax legth .
I think you just need to avoid quarter-wave multiples...
You need to do a review of the DxCommander vertical. www.m0mcx.co.uk
A vertical fan dipole. 1.2 on 40-6 meters. Portable. You will want one.
find SOME STICKS AND USE THEM AS SUPPORTS EVEN AT 5 FEET TO 10 FEET OFF THE GROUND.... 73 FROM W3LES
MFJ makes a knock off version of these antennas including a QRP End-Fed version, MFJ-1982LP. Also if you search EBAY using "qrp end antenna", you will find QRP multiband end-fed offerings.
+Brent C Thanks, I'll check it out.
Is this a 49:1 or 9:1?
49:1 if I remember well..
Infantry radioman had "life expectancy of 5 seconds" in 'Nam.
Prime target :-(
Actually, that coil **IS** a trap, for 80m only, of about 110mH.
Man, looks like this mil transceiver has pathetic selectivity :) So much interference. Or do they ride the same frequency?
It has good selectivity actually.
My wife asked me if she needed to get a radio to talk to me
Guess why I'm single? LOL. Tell her she needs to get her license ;-)
That's why I don't have one ;-)
My ex told me I'd probably like her a lot more if she had knobs and dials on her. I said ok, let's start with an on/off switch, lol. She didn't appreciate my humor.
My radio is only 4 wats .
That's plenty..
Contests are a waste of bandwidth, that being said, sometimes they are the only way to make a contact when everybody is listening but not transmitting. I enjoyed your video Gil, but that antenna is not for me, its too big and heavy.
My thinking also. It really is a home base antenna...
It's a choke.
+Dale Myers Thanks, I guess it could be! You usually have those on the coax...
I agree, I hate contestors, it ruins everything for ham radio, they are rude and sit all over the band.
If only they used a restricted part of the bands...
A quick search of the qrz forums will give a great example of why we should never support that company. The owner of myantennas is a hater who attacks other companies/operators to promote his own.
The box is made in Germany not what's inside!
+OH8STN Thanks for the info! I only test the product.... But I will look into the company a bit more...
Julian, I have apologized for my "Technical outburst" about antenna you promoted on QRZ.com and you accepted the apology. Now, you are calling me a hater and doing exactly the same and even worse of what you accused me of. I never said that people should not buy or use the antenna you have promoted, I simply gave my technical assessment of mediocre antenna design which I as professional antenna designer have right to do regardless of your biased opinion. I am sorry that your ego was so bruised that you can't let go and have to use this channel to propagate malicious attempts to paint me personally as an unscrupulous hater of " other antenna companies". I still think that you are wonderful videographer but very limited in knowledge about antenna and RF technology. Best 73 Danny E73M aka N4EXA an owner of Myantennas.com
Daniel Horvat The wonderful thing about QRZ is you can't delete your comments! Had you attacked Chameleon Antenna professionally, you would not have heard a peep from me. Instead you chose to attack me on a personal level. It's right there for the world to see, and qrz.com won't delete it.
You can hate all you like on other companies, just don't add the personal attacks, and nobody will care.
Well, how do you call this personal attack you made in form of this statement:"The owner of myantennas is a hater who attacks other companies/operators to promote his own."?
So, I also would like to point out that you have to stop slander and unprovoked personal atack as you made it in the post above. Sorry, but obviously you are not one who can judge me and my character... Take a look in the mirror, do you see "hater" too or peace loving and forgiving angel without flaws whose opinion has to be forced on other people youtube channel... So, enough of this pissing contest, I do not hate you or wish you ill, just want to show you that people make mistakes just like you made the hateful post above. I am sorry again, for everything you found offending in our QRZ.com exchange. I hope you will find some place in your heart to learn to forgive just like I learned to forgive to so many of my enemies of which some become my dear friends despite the fact that they were trying to kill me during the Bosnian war 1992-1995. Julian, life is too short to hold the grudge over trivial things like forum exchanges... Danny E73M
OH8STN don't take the bait! This guy is a keyboard Commando making emotional replies. I took a screenshot of his reply before he edited it for politeness. Let me know if I should email that to you.
I also read his comments on qrz. Sorry you have to take abuse from this guy. I hope it doesn't put you off from making videos. I agree, he's a hater, or perhaps he just stopped eating his pills.
I found Gil through you Julian, both of you are doing an amazing job.
I was thinking of getting one until you said plastic. Thats just rediculous. No excuse for using plastic. No thanks
Metal might interfere with magnetic fields..