Testing The ARRL End Fed Halfwave Antenna (
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- Опубликовано: 31 июл 2024
- I an going to put up and test the EFHW antenna. In the previous video I built the EFHW and now I am gong to see how well it works. Watch to learn more about this antenna and how to set it up.
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Hey Dave, I love your videos, I hope you make many more. I AM worried about that shortness of breath, brother. Stay well, keep smilin' and play radio.
I’m worried about his shortness of breath too.
Yeah, I agree. He's wheezing like crazy.
Better go to a doc. Maybe you Need an inhaler and everything will be fine in future. 73 my friend
@@horstjaeger2569 Well, like most hams, he's overweight. Losing weight would probably help.
I concur, that's a telltale sign of underlying issues; Dr. would prescribe 150 minutes of level 2 cardio per week + 3x weekly resistance training to increase base metabolic rate... Motion is medicine... Use it or lose it.
Good demo, Dave. I like your rule: "With antennas, everything affects everything". Software is like that - I think of it as a big net full of fish. Change one line and it's like snipping one string and everything moves!
Thank you for your knowledge Dave.
Lovely out these days! Thanks Dave!
Thanks Dave. Glad you have your channel is back. I have this antenna and I found that it did not have a weep whole and the humidity got to it. Great kit but I would suggest a weep hole.
Dave, thanks for the good video and groundwork footage. Looking forward to future video updates on the EFHW. 73, AC3HT
Thanks!
Great video. I bought that antenna when I first started. I had to shorten it some for sure!
Very interesting video Dave. I just built that same antenna and have been listening to hf until I can pass my general test. My SWR was very close to yours without any tuning. I put a tuner in line and got the SWR’s all down to around 1.2 to 1.
I am looking forward to the results! It is still a little too chilly here for me to have tried the experiment (using the cap in the middle of the 80M antenna) that you suggested, but I'll get there. Will also be using a ~95' EFHW for the Armed Forces Day Crossband Test (13 May 2023) on 60M. Be safe!
Likewise my first HF antenna. Still don't have it permanently up but got one end out to a nearby tree. Good results on the 40/20/15/10m bands and found it will tune on 17m. Wound up taking nearly 6' off. Having a ball w/FT8 and FT4.
I built my ARRL EFHW last December. I haven't gotten around to properly testing it or putting it on the air yet. I plan to use it this year on Field Day.
Just subscribed!
What was your final wire length you used on this video?
Great video this.The Flag pole just needs a Flag 😊
You can put up a Rhombic with that ammount of property....Eric said
By golly you just gave me a wonderfull idea, I'll get started on the blue prints...Dave replied!😏👍
Appreciate all you do for ham radio enthusiasts. I'm concerned about your shortness of breath. Hope you stay healthy.
Asthma, under a doctor's supervision.
@@davecasler…you are at altitude as well, that does not help for asthma. Great video, studying installation videos as I am considering purchasing a 20 meter end-fed (want 40 multi-band but cannot due to space restrictions); this to augment my Comet CHA-250 HD vertical, end-fed should be better for Europe DX (I am in Florida). My main rig is a FT-710 AESS. de KF6TSD
Hi Dave,
Another fine testing video. May I suggest, since the trouble you had with your channel, you mention in the description below the title when the video was made. Your videos are now all out of order. Getting a notification of a new video upload is somewhat useless when you are uploading older videos to the channel. You and Loretta stay safe. 73 WJ3U
I had to lower my feed point to bring the swr down. and got it down to a 1.1 to a 1.5 on most bands.
Great video Dave, lovely area you live in. Just one question the structure that is behind you at the start of the video, is that you guest cottage????
House next door.
Nice job, I have mine from ARRL sitting in the order que. waiting to pull the trigger. But I don’t have a lot of space , so it might be just a field antenna.
All the best and good health.
KN6JHC
Antenna reviews should have on air comparison to your standard antenna.
Is there a way to measure impedance EFHW? Given that no transformer is between the TX/RX and the EFHW?
I am confused by the question. There is a 49:1 transformer (un-un) between the coax and antenna.
@@NgakpaW Let me clarify. Imagine having no un-un or transformer between efhw and tx/tx ( test only setup ). We know that 50 ohm does not match efhw impedance. And we know the impedance skyrockets when we feed dipole antenna from one end. But is there a way to measure it's impedance at the end? How much is it in real time/real life? By measuring it.
Couldn't you measure the impedence with the 49:1 inline and then multiply your reading by 49 to calculate what the impedence is on the antenna side?
Hi Dave, who does the property belong to behind you?
Behind me is Billy Creek State Wildlife Area. Mt Sneffels, elev.14,150 ft, is in the distance.
What about counterpoise and counterpoise length?
He stated in the video that the length of the coax cable will serve as the counterpoise.
Perfect weather here to work on antennas, just nobody around to help. And my health is getting to were I just can not do that much any more
Same here Ben. I understand the situation. Good luck with finding help
We’ve been waiting all winter to find the right time to do our antenna work. It seems when we have time, it’s either rainy and cold or the wind is blowing 70mph.
Should tie a SheetBend vs double overhands
I can barely tie a square knot!
Dave you going to make it? Lots of huffing and puffing....
Asthma, under a doctor's care.
Copd? Pulmonary disease?
Asthma, under a doctor's care.
Dave!! Do us ALL a VITAL FAVOR, OK?!! PLEASE,...do not allow your weight to continue to get out of control!! I WAS THERE, BROTHER, and I KNOW HOW YOUR BREATHING IS AS MINE WAS!!! PLEASE!! That extra weight is causing a compression on your lungs, cutting-down on the amount of your useable lung capacity. We all love you, and your shortness of breath worries us ALL out here, a lot!! You are the VERY BEST, ..BUT for how long? We would ALL BE DEVISTATED if we lost you to some simple, solvable problem!! PLEASE LOSE THE WEIGHT, DAVE!! GOD BLESS!! ..Ron K
Why not try an tune better
Liked this video, so I am viewing it again. N0QFT
Stop eating!