Видео

@2:55 and @13:25 Why do you keep saying it wrong? At least you realized but this is not something I would expect from another Extra Class ham - It's TWENTY TWO HUNDRED and NOT TWO TWO TWO ?!?!? Excellent info and super helpful - thanks for producing and sharing!!!

Thanks for sharing your expertise. VK6ADA

Great presentation! Even though I’m familiar with the program, I always learn something new. W1GRL and W1BOY will enter updated submissions on January 1. Thanks Mark!

Great show! You reminded me of many things I’d like to buy. One gift I thought of is time. My husband (W1BOY) and I (W1GRL) take turns with contests and large blocks of radio time. It’s the best gift when one of us says to the other, “I’ll take care of food and snacks, you can operate all day.”

Great show, thanks.

Nice thanks!!!

Great presentation.

I have watched a few EFHW videos over the years and I can say that this is the most accurate one I have seen. I believe I can say this as the original lumped element EFHW design was done by me in 1999 as a result of wanting a simple antenna for hiking. I began marketing them in 2000 under the trademark name EndFedz. The Z was my homage to the antennas used on the Zeppelins. The end fed design was an offshoot of my On-Glass half wave antenna Patent used in commercial two way mobile installations. The first designs were monoband and used an L network for matching. In fact if one wishes to use the antenna on a singe band, the L network is a more efficient matching network than is the ferrite transformer (it is NOT balun BTW, it is just a transformer). Around 2002 I designed the current 49:1 transformer with the shunt capacitance, as Ward properly says is there to reduce winding inductance that begins to upset the Return Loss above 15M. By 2010 orders were becoming larger than we could handle and yet still retain our military and aerospace clients and I sold the line to LNR Precision. At that time, we were still the only ones manufacturing EFHW. LNR eventually sold to Scott at Vibroplex when LNR decided to go back to selling only QRP radios. I guess imitation is the best form of flattery. BTW, way back in 1999 I asked a trusted ham friend if he thought the EFHW design was worth manufacturing. His answer was "No, I just don't see it going anywhere". Dale W4OP PAR Electronics, Inc.

Thank you for posting. I bought the app based on this review.

My 5 devices came in but I think I fell victim to the non-power negotiating ESP32 dev module. Do you have more information on the usb adapter you mentioned that can remediate that issue?

Interesting project. I have a ton of handy talkies already, but this appeals to my love of gadgets.

I live in the small town of Monson, Maine. It's notable from people who hike the Appalachian Trail because it's the last stop (when hiking northbound) before the 100 mile wilderness at the northern end of the trail at Mount Katahdin. I want to get some of the hikers interested in using ham radio, starting with use along the trail and hopefully in their 'normal' lives as well. I think your project could be a better approach than my original idea of getting them kitted with Baofengs because this is easier to use, more versatile, and most importantly - lighter. I hope to have about 10 built by the time the season starts again in May, and then lasso some of the hikers into learned about ham radio and getting their tech license so they can enjoy all that fun & safety that such a radio gives.

I have 5 "pre-built" devices coming from PCBWay. 5 Units, all devices soldered, pins clipped, pretty much ready to go sans case and antenna for $106.15 ($21.23 each). They should be here in a few days and I'm really looking forward to putting them through their paces. Since I don't really need 5 of them, I'm going to send a couple to a HAM friend of mine to experiment with too. Thank you for all of the hard work it took to take this project from concept to a real, working device. K4GSL

Well done! Really inventive of you. o7

Great presentation, but you are wrong about the loss of 43 mix. The resistive permeability is greater than the inductive at 10 MHz and up. But the mismatch because of low inductance at lower bands explains the loss there. The inductive "loss" (mismatch) at higher bands is low, because the the inductive reactance is higher.

I believe the internal antenna tuner "ratio" listed on your chart for the Kenwood TS-590SG is incorrect and should be 3:1.

At age 77 I've become convinced that one of two things are true: I will never learn cw well enough to actually use it OR I will at some point be functional with cw but it will take a very long time to get there. I have memorized the letters and numbers heard at 30 words per minute. I cannot copy sentences at any letter speed, even at a word rate of 5 words per minute--I will always be one, two or three words behind, which means I will miss about 2/3 of the words sent. "Get on the air." There is no one sending code slow enough for me to copy it. The supposedly "slow speed contests" ( maximum speed 20 wom) are useless to me. Remember, 20 wom was the extreme mountain to climb on the way to one's Extra that many hams never conquered. 20 wom IS NOT slow speed code. If I am to successfully learn CW (eventually, per outcome #2 above) I need a process designed for very slow learners. In two years of searching, I have yet to find one. Even LICW Club eventually leaves me in a ditch, way behind the pace of the class. I'm almost convinced that age 72 is beyond the window during which one can learn CW.

Interesting. Thank you for probing the frontiers of digital tech in AR.

I have 3 EFHW and have worked all over the world chasing DX. Just worked cocos and keeling island the other day from MI. Literally the other side of the world on SSB.

This is my second time watching this. I wasn't ready to learn the first time. But lately, I've been learning CW on a free ap on cell phone. I 've learned about 14 letters. It's interesting that I frequently mess up A and N (two of the first letters I leared and have reviewed the most); but I rarely confuse R and K. I thought I was going to confuse lots more letters, but so far only A and N, although there are more cvhallenges to come as variations increase.

Great Presentation, especially the current and voltage graphs did help me visualize the concept. Also the small amount on the "Counterpoise" was very interesting. I run the KJ6ER POTAperformer vertical antenna with tuned raised counterpoise(s) (2). Ward can you perhaps, in the future, do a presentation on counterpoises? Lastly, I do know of some QRO folks who have installed a small FAN to the case of their EFHW transformer to cool down the torrid stack, especially with FT8. They tell me the torroids heat up quicker than they cool down. Great job. 73 Art W1SWL

The wkcares tactical call sign is no good on winlink.

Where is this app I've been to the website and all I see is a developers link no download or any contact to get info on it

One of my best antenna builds was a 136' doublet fed with 6" spaced ladder, made with 4mm stranded copper wire (blue coated). Paxaline centre and end insulators, made the spacers out of conduit from local B&Q DIY center. Many thanks for the very interesting video demo, I enjoyed it very much. Best 73 GM0KET 😎 👍 🏴󠁧󠁢󠁳󠁣󠁴󠁿

Old Con Man Alert at 54:18

Are you seriously explaining websites to people in 2024?

Many thanks 73 Rob G3RCE

Thank you for allowing and mentioning AREC New Zealand and other Kiwi operators in this video. 73 ZK6EXC

Happy Weekend into the Silver State. 73 de Uncle Günter across the Pond 💯👍🙋‍♂

It won't be the Japanese who make the radios for this. VERO is much more likely.

Good information 👍

With any organization there needs to be accountability. If the ARRL appears to be rigging elections, disenfranchised members may feel the only way they can vote is through their dues, unless they're life members. Advocating for spectrum can't be an excuse for tyranny without consequences. At the current rate of the decline of the ARRL, hams may soon lose advocacy. The presenters may be opposed to members voting with their dues, but members are likely to make that choice themselves. BTW, thanks so much for posting this meeting -- very helpful.

As to the question that comes up at about 57:46, or so. This is something that I think we really need to focus on, as a community. There's a gold mine of folks out there, who are far enough out of school as to be able to afford to spend money on a hobby like amateur radio, who are simply unaware that it even exists. This is something we could easily correct. If we just try.

With the shenanigans of the ARRL in recent years I stopped my long-standing membership. Gonna have to do some real convincing to get me back. 73

Excellent video - very interesting to know the history and what human communications folly during loss of the Titanic! de N6DBZ

The foam insulation is going to solve my problem of getting the 450 ohm line into my shack, a metal building. I'm finally going over to the dark side and in a few days will see why so many guys brag about open feeder and doublets.

Anthony............... another Great YT !!! - Kudos on the AI Ham pic

Tropo ducting is fun. One night last year I noticed my IC-9700 had a very strong signal on a saved memory channel but the radio wasn't stopping scan on it. I took it out of scan and turned off tone squelch. Listened for a couple of minutes to 2 guys talking (with strong southern accents) trying to figure out what repeater they were on. I used tone scan to find the PL tone and called out. Asked them where the repeater was that they were using and I didn't recognize the town. Said what state are you in and got a reply of GA. I'm in PA. Signal was so strong I figured it was a new local repeater, was I ever wrong. I talked to them for a hour and a half and then the within a minute or so the S-9 +20dB signal I was getting faded away. I stayed on frequency and about a half hour later it returned. Talked for another 15 minutes or so and that was the last I ever heard of them. One of them was the president of their club and sent me a club QSL card to confirm our tropo contact. Point being, as you said tropo propagation on the east coast can get really strong at times. The further down south you are the stronger it is.

This worked on FRS simplex but I cannot make it work on VHS repeater. Why?

Whats the nasty high pitched noise in the first 8 min? Interesting antenna

A good presentation .... very useful. 73 de GI8WFA.

If you are relying on the internet to make a contact you are no longer using RF on the amateur bands it's that simple. These "qso's" should count for nothing, one might as well use Skype.

Nader Heights

Excellent.. Thank you! I just ordered a handful of digilink mini interfaces for my family/friend group. We initially wanted a method of communication in the event of a disaster or emergency which takes out conventional means of communication. Winlink should be a great addition to the SMS and voice communication we have. Thank you.

Very professional presentation. Thank you.

Two is one and one is none and 3 is parts. That's how I heard it from a grizzled old Vietnam vet anyway.

So I've used the maps and find a plethora of hams surrounding me in every direction, isn't that wonderful. BUT maybe one out 0f twenty of them actually use their license and operate! I drew a circle around my house with a radius of one mile and that shows 37 licensed hams, WOW, amazing isn't it? Well I looked up all the calls in QRZ and found that all but two of them (including me) have no activity shown using "lookups" as the value measure of activity. Lookups occur when contacts are made and hams are curious about the operator. I concluded that most licensed persons have done so as a "prepper" in case of a catastrophic incident where communications are a part of survival. I'm certain that most if not all of them have a cheap VHF/UHF Chinese radio they think will aid them in some way when civilization begins dissolving. I doubt that nearly all of them would not know how to use the radio effectively or if such a radio would be of any value. If you want to find a fellow ham to whom you would like to get to know, share radio experiences and so on, you have to use the map AND QRZ to find those rare hams who actually use their license.

This is really some amazing research done on the state of the band, at all levels, from the history, to the regulatory text, to possible future technical possibilities and current hardware options. As a former merchant mariner and 20-year Coast Guard veteran, I had never heard of AMTS before I watched this video. I sincerely believe there is no AMTS service being offered or provided to any subscribers anywhere in the U.S, and that any bandwidth rights obtained for AMTS use are being used for other purposes or have been leased to non-AMTS operators. AMTS service appears to have been devised back in the day when there were coastal and inland maritime "dark zones" for routine communications. This was before the digital cell network was built out and before satellite internet for domestic voyage U.S. vessels was practical or affordable. Considering this and that no AMTS operators have specifically identified themselves to the ARRL as the regulations at 47 CFR 80.475(b) require, I assert that amateur operators should be able to notify the ARRL of their intentions to operate on the 219-220 band with 30 days notice and proceed without fearing the restrictions of being within 80 km of an AMTS coast station. The ARRL or amateur operators should not have to go on a wild goose chase to hunt down 219-220 licensees to see if any are in the AMTS service or not, the rules require them to make themselves known to the ARRL. Amateur operations would still be secondary to other licensed activity on the 219-220 band, though. I wish luck to the amateur pioneers in this band!

Spot on! Looking forward to viewing the series. 73

End the FED! oh, never mind.. carry on...