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Sierra Nevada Amateur Radio Society
United States
เข้าร่วมเมื่อ 7 ต.ค. 2018
The Sierra Nevada Amateur Radio Society is an Amateur Radio Organization serving the greater Reno/Tahoe Area and beyond.
Club Business & ARRL Board Presentation, Jan 4, 2025
Barry (K6ST) provides Club Business & Financials for the January 2024 SNARS meeting. Tony Marcin (W7XM) Director of ARRL Pacific Division, provides a recap of the January ARRL Board Meeting, along with upcoming events and initiatives.
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Pacificon 2024
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Pete Harris (KE6ZIW) gives a "picture tour" of the 2024 Pacificon Ham Radio Convention. View the full Pacificon 2024 photo album at: www.flickr.com/photos/11636522@N06/albums/72177720321489770/
Club Business, December 7, 2024
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Club Business & Financials for the December 2024 meeting of the Sierra Nevada Amateur Radio Society.
Learning CW
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Learning CW with the Long Island CW Club and CW Ops. Presented by Kyle, AD0ZC and Craig, AE7I
Club Business, November 2, 2024
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Club Business & Financials for the November 2024 meeting of the Sierra Nevada Amateur Radio Society.
Carson Valley Radio Club & Fusion System
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Robert Plant, NV7D, gives the SNARS members a presentation on the Carson Valley Radio Club & Fusion Repeater System.
Club Business & Presentation, October 5, 2024
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Club Business & Financials for the October 2024 meeting of the Sierra Nevada Amateur Radio Society.
Club Business & Presentation, September 7, 2024
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In this combined video, Barry K6ST reviews Club financials, and Jim Shepherd W6US gives a talk about the upcoming NVQSO Party.
Living With Nevada's Earthquakes & How Ham Radio Can Be Of Service
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Steve Metzger (KK7RHH) gives the SNARS members a presentation on Nevada Earthquake Geology and Doug Edmondo (W7DBE) follows up with a discussion on how Ham Radio can be of service.
Club Business, July 6, 2024
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Club Business & Financials for the July 2024 meeting of the Sierra Nevada Amateur Radio Society.
SNARS Field Day 2024
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KOLO 8 News story on the 2024 SNARS Field Day event at Washoe Lake State Park
Club Business & Presentation, June 1, 2024
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Club Business and 2024 Field Day Presentation for the June 2024 meeting of the Sierra Nevada Amateur Radio Society.
7th Area QSO Party - Live On Air
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A live on-the-air demo of how to make contacts in the 2024 7th Area QSO Party (7QP). Recorded during the May 4, 2024 SNARS Monthly Meeting with Barry Bettman, K6ST.
Club Business, May 4, 2024
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Club Business & Financials for the May 2024 meeting of the Sierra Nevada Amateur Radio Society.
7QP Contest
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Link to Presentation below. Jim Shepherd (W6US) gives a presentation on preparing for the annual 7QP contest. Jim covers what to do before the contest starts, the exchange process, scoring, log submissions and more. For a copy of Jim's PowerPoint presentation, click here: snars.org/data/uploads/documents/monthly-meetings/7qp.pptx
Club Business & Pacificon Recap, November 4, 2023
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Club Business & Pacificon Recap, November 4, 2023
It IS the hole which transmits. The electric field is in the hole.
I've been looking for this SIMPLE info for 65 years. Now you've created a Yagi building monster.. (grin) Thank you.
I have, over the years, built Yagis (quads and quagis too), I've use the NBS technical note 688 method, and the Tilton (W1HDQ) designs from the ARRL Handbooks (as is and scaled), etc. The thing is, antennas want to work.
Anyone under 90 attend this?
Over 100 scouts attended with many of their parents, and lots of other youth engaged in electronic kit building and on-the-air activities. Despite some assumptions to the contrary, there are currently close to as many licensed hams in the United States (about 748,000) as there have ever been since radio got it's start around 1909. We do need to interest more youth to become involved. When all other systems go down, in cases of disasters and emergencies, ham radio has, and continues to be the last and only line for critical communications. Pete Harris, KE6ZIW
@@odyssey570 Thank you for the comment Pete. We both know ham radio does not fill that role, except for maybe a few very specific cases. In fact it makes ham radio look bad for hams to run around trying to sell that line.
You like to say everything two or more times, Alzheimer’s?
Excellent. I built a 4 element quad for 10 meters back in the 80’s on a 16 foot square aluminum boom that rocked. Everyone told me that it was spaced incorrectly, even though I was 20 db over 9. I spaced the 2 directors the driven and the reflector evenly, and did the 5% rule. This was based on a book of quads from Bill Ohr w6 something. So yes the basics you talked about work. Thank you !!!! Now back on the air and working on a 40 m yagi design. Here we go!
You state a Gamma Match is hard to adjust. Maybe try this method. Water proof box to hold your air spaced capacitor, Attach rod and adjusting strap. I have a Rig expert AA600, because I have one.no other reason. (working or purchasing a VNA.) I go to all modes and adjust adjusting strap for 50 ohms. Then dip capacitor for close as to 1:1. Then look at dB return loss and see where best spot is. Adjust driven element length accordingly if required. and repeat resistance and capacitance as necessary. . Should put tune spot on quite quickly. Capacitor can be measured and replaced with a fixed capacitor ensuring the correct voltage is used Your thoughts please. John.
Great ideo
Thanks John for this brilliant presentation! Have you tried the rules to design a HF Yagis?
This does make it easy. You're right, there's all different dimensions of element spacings for Yagi's. Perhaps we should more correctly call them Yagi-Uda beams. I made a note for a five element Yagi for 2m years ago from a design in the ARRL Handbook with element spacings of R to D.E. 16", D.E. to 1st D 12", then two spacings of 20". Three directors reducing by ½" going forwards. It was fed with a coax delta match. It worked okay. I think I'll give this one a go, 5 elements maybe, the hairpin match look easier and the overall design simpler. Thank you. I no longer have the first one or it would have been interesting to compare the two. G4GHB.
Thank you so much, cheers from the U.A.E
A plain old humble non razzle dazzle country engineer enjoyed this video. A good demonstration of breaking down the VHF lower UHF directional beam antennae intricacies into manageable steps. Innovative and inventive, the heart and soul of good engineering. Caution is advised as the scale of the dipole and resulting reflector and director elements and type of match compound as wavelengths increase towards the HF bands, but the basic concepts do not change much. One will not find many snow markers in the temperate zone which will extend to the thirty-five of feet or so needed for a director for the 20-meter band. Much more revealed here as one studies the presenters' thoughts carefully. I would prefer two digits for the element spacing, as Mr. Gibilisco's videos and books. I agree for the UHF/lower VHF the simplifications are more than adequate. I do take a bit of exception to the word newbie as my life experience has shown that learning to recognize what one does not know is more valuable than knowing the name of something. We are all newbies to most things; except for those discoveries we make use of every day. As a very practical physicist once said, knowing about something is much more important than knowing the name of something. Please push yourself to understand the underlying concepts, complex math is used to describe the concepts after the discovery is made, the thrill is finding something out. Enjoy!
Many thank's for this video John ! How calculate the gain of the antenna ? Thank you for your response, best 73 ! F5JXS Louis
Lol Simple😂 ok
Yeah... I bought the book.
Love this approach! What impact does the different diameters most store-bought yagis use for reflector, radiator, and the parasitics?
Thanks, Mr. Portune, This video really helped me. The horizontal polarization’s lower noise property appeals to me. KC3JJH
interesting and useful info. I am surprised with the hairpin system as I thought it would short out the coax and hence transmission signal and blow the transmitter.
Thanks So Much for your Wonderful 'Simplistic' Approach .... I 'Sucked Up' Every Word .....Just could not get enough ..... :-) :-) :-) Very Best to You, Yours and All from ChCh, NZ
Great video. I love your presentation style. Great Job!!!
Well you guys say it's easy, you say it not me, can I have the specification for the 2,3,4,5 element yagi flat side antenna for 11 meter, please an thanks watching from Jamaica west Indies !!.
At 32 min, the very important part, he is cut short. Come on. Very frustrating.
Any time someone like Ed gets talking about their passion, you let them talk.
@@sweet65mustang I really like Justin "Unlocking the Secrets of the J-Pole Antenna: " I learned a lot from him.
I agree. Like he was really about to explain the manufacturing process and science, then he gets interrupted
Hmm, I always set my spacing to give a 12.5 ohm impedance where the 12.5 ohms was transformed to 50 ohms by using as the driven element a folded dipole with a wire spacing that multiplied the 12.5 by 4. This turned out to be common speaker wire. As far as being flimsy wire, it was taped to dowels similar to the fiberglass rods. Any method you know that works is good enough and I do like the simplicity of the method shown here.
By fiddling around with some modeling software, it brought me to the 12.5 ohm impedance for an optimum gain and FB ration 3 element. Using the simple 2 rule tactic made my 20 meter project over 24' long for a 3 element beam! haha Modeled out pretty good but I was able to get the FB ration better by moving the driven closer to the reflector. The .2 WL on the director does work out pretty close to maximum gain though.
2:31 😂 This didn’t age well 💉
March 2016 page 37 in QST
Thank you 😃👍
excellent explanation.
Excellent presentation! Thanks for sharing your knowledge.
It's just as easy to drill PVC pipe as wood.
It is harder to keep the elements centered in plane
Thank you, do you need to consider the width of beam when deciding on the element lengths? I.e.. is it simply the amount exposed or includes material passing thru the beam?
Thanks for sharing!
I still Don't completely Understand exactly How the 3 Element yagi works....Would a 3 Element Optical Equivalent using a Mirror reflector, 360° light bulb Source & Convex Lens produce an Easier to understand & Improve 3 Element yagi antenna ??
@@Gabaab The question is indeed a good one. Radio waves and light waves share the property of traveling at the speed of light. Light and radio waves being part of the electromagnetic spectrum exhibit constructive and destructive interference. This property of constructive and destructive interference is the behavior which the Yagi takes advantage of to focus a radio wave in the forward direction. The frequency of the light from a filament light bulb has an exceptionally low frequency as the typically supplied AC household current oscillates at 60Hz, not 3500 (80 meter band) or 144,000 (2 Meter Band) thousand. In fact, turning a light switch on can produce a radio wave due to the spark which is created within the switch when contact is broken. So light and the principles of optics are indeed closely related to radio waves and can be helpful in illustrating how a Yagi works.
My accurately Calculated & precision Built/Cut & feed Match 10 element Vhf & Uhf yagi antennas Based on your Recommended model Performs only 75--85% as good as Commercially available 10 Element yagis.....What's wrong & how can I Recover the Lost 15--25% Gain potential ??.....Thx for all your Helpful info....
Hentenna = portmanteau of hen (変な) and the English antenna meaning "strange antenna" in Japanese. Really interesting video thanks!
Super video, thanks for posting.
Thanks for the video!
I am a new Ham (paid the fee today). My first radio ( bought before i should have) is a HT analog. My house is like a farady cage . I will need an antenna outside and getting it inside has to meet my wifes approval. I am thinking this is a good first step? It can get my on the air and if spend the time and and effort can then get a outside antenna or even base unit. Does this make sense?
Thanks for all of the great information 👍
Maybe you should research microphones a little more. Your voice sounds like it’s through a soup can and a string before you’ve transmitted it anywhere.
Specifically the introduction, not the bulk of the lecture
Also, a ClearZero can do ethernet by adding a $7 usb-ethernet adapter. Just remember to get one w/the micro USB connector...
I think Clearnode would better be described as 'turnkey', rather than 'commercialized', though it is certainly that too.
Iv had a CN for 4 yrs and it is truly awesome.
Awesome video guys!
Does Dr. McIntosh have an updated prediction on the strength and timing of the peak?
working on my first. good video!!
I like to Make if these for My SDR Play RSP DX Receiver!
I've run resonant (no tuner) Hentenna / Skeleton Slot galvanised fencing wire antennas on 160,80,40,20,10,6,2,70cm and 23cm for ten years, and there's a lot you've said that I'd disagree with. I agree though, the Slot is a remarkable antenna with big performance. I did the cube antenna, but formed in a circle instead - this does go very well. The biggest lesson I learned was the antenna is nothing if it's not resonant - attach a tuner to a non-resonant at your peril - an ordinary half-wave dipole outperformed it if I did. The 160/80/40 slots can be built inside each other and fed with one feedpoint for a jaw-dropper of an antenna - I mount mine with all four corners equal height above the ground, a cloud warmer as you put it, but it seriously outperformed any other DX wire antenna fullstop, as well wound any NVIS local stations' S-meter right off the end of the meter and caused many a disbelieving moment, especially with full legal into it.. Strongly encourage anyone to try this antenna - practice first with a six meter Hentenna since it is only the size of the hood of your car, and once you have the hang of it then progress on to a 40m slot, and then to 80 and 160, and watch the insanity... A word of warning, the Hentenna / Skeleton Slot is going to teach you how to use your analyser, this is a hard task master, as you will see. Rules of thumb - narrower slot is lower impedance, longer antenna is lower frequency, height above ground should be about the same as a yagi reflector distance.
Would love to see some of your antennas. Got a link?
@@dougtaylor7724 If you want to see one, then build it.
Make a video.
@@Redbelly357 make an antenna
The vhf/uhf slot antennas mentioned as being on the concorde at 4:24 were in fact HF notch antennas. Also used on the DC-10.
How about a slot antenna for 80mts
Do it. Goes well. I've made lots.
Ever cool and educational. Thank you