- published: 27 Jan 2012
- views: 496170
The 15-meter band (also called the 21-MHz band or 15 meters) is an amateur radio frequency band spanning the shortwave spectrum from 21 to 21.45 MHz. Almost all countries permit amateur communications on the entire band.
The 15 meter band is considered a DX band (i.e., used for long-distance communications). Since signals on 15 meters propagate primarily via reflection off of the F-2 layer of the ionosphere, the band is most useful for intercontinental communication during daylight hours, especially in years close to the solar maximum. However, the band also sees long-distance openings during solar minima, and into evening hours, and does not require high-power station equipment to make contacts even at these times.
Because the 15-meter wavelength is harmonically related to that of the 40-meter band, it is often possible to use an antenna designed for 40 meters on the 15-meter band, as well.
The 15 meter band was created by the 1947 International Radio Conference of Atlantic City in part to compensate for the loss of the 160 meter band to amateurs by the introduction of Loran during World War II. The 15 meter band opened to amateurs for CW operation only in the United States on May 1, 1952, and telephony operations were authorized above 21250 kHz on March 28, 1953
Year 15 (XV) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Caesar and Flaccus (or, less frequently, year 768 Ab urbe condita). The denomination 15 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
The bus drives through snow wall between Bijodaira and Murodo in Tateyama, Japan. In April, the snow remover cars get the snow on the road off by using GPS with an accuracy of centimeter. The snow wall was 15 meter high that year.
READ ME ******************** Worst Car Accident Ever Recorded ,the woman gets thrown out her car 15meteres plus in the air. this Fatal, Deadly, Horrible, Horrific Car Crash in Russia [2013] , a Head on Collision throws one of the passengers very high from the car and fell at high speed. The accident involved 7 cars Comments and shares welcome Hit the like button if you glad it wasnt you !!! Check out my Chanel for MORE Videos : http://www.youtube.com/channel/UCUC61eap3rvVTZvuzuFcL5Q TAGS ********** Bad Car Accidents Worlds worst car accident Woman learns to fly woman gets thrown in the air, worst car accidents Fail Compilation Pinetown Accident Insane Car Crashes Win Compilation cctv bmx fails Superman tricks Russian Drivers Taxi Drivers Armed Robbery You must be bored to read the...
Asgarnian is ski jumping on his homemade 15 meter ski jump. Some Epic Slow Motion Flight time!
scared video which shows a ship against 15 m wave!
The 15 meters amateur radio band from 21000 - 21450 Khz
Oglądaliście film 'Wielki Błękit'? Jest w nim taki epizod gdy Enzo bez przygotowania zakłada ABCD i 'od strzału' nurkuje do wraku aby uratować uwięzionego w jego wnętrzu nurka. To było filmowe uproszczenie sprawy. W praktyce tak długich i zarazem niebezpiecznych zanurzeń na wstrzymanym oddechu nie da się wykonać bez przygotowania, bez przeprowadzenia wcześniej adaptacji organizmu. Na tym nudnym 'filmie' pokazuję przykładowo jak się przygotować do podobnego zadania. Nie chcę żeby ktokolwiek oglądając moje filmy nabrał mylnego przekonania, że jestem 'gwiazdą' freedivingu. NIE JESTEM i zawsze to podkreślam gdy mówię i piszę. Freedivingu jako dyscypliny sportowej nie trenuję już od wielu lat. Ze względu na wielokrotne kontuzje płuc z przeszłości muszę uważać by nurkując nie przekraczać już pe...
Meeting: "Alles was fliegt" in Celle Germany August 2016 Flugsportvereinigung Celle Modellfluggruppe e.V. http://www.fvc-celle.de/ More videos from this event you can see my playlist: https://www.youtube.com/playlist?list=PLP1RlhOjgp0_B3GAGJ-y65b06aLkOc_s0 Copyright: RC MEDIA WORLD
Vi testar och påvisar skillnaderna mellan en bra och en dålig HDMI-kabel på 15 meter. Eftersom det i många tester påstås att det aldrig är någon skillnad på HDMI-kablar av olika pris/kvalitet så vill vi påvisa skillnaderna mellan en lågpris "noname"-kabel och en kvalitetskabel.
messing around
In 23/02/2014
Part 3: Making the 15 meter trap.
Spinosaurus - Der Urzeit-Gigant ========================== Rasiermesserscharfe Zähne, meterlange Kiefer und sichelförmige Krallen: Der Spinosaurus war der größte Räuber aller Zeiten. Anhand eines in der Sahara gefundenen Skeletts zeichnen die Paläontologen Paul Sereno und Nizar Ibrahim das Leben dieser Urzeitbestie nach und lassen sie digital wiederauferstehen. Die beiden Forscher beweisen, dass der knapp 15 Meter lange Riese nicht nur der größte Fleischfresser unter den Landsauriern war, sondern auch der einzige von ihnen, der im Wasser jagen konnte. Dino-Playlist: https://www.youtube.com/playlist?list=PLC59ysAvLa1Itvw2tYXCTdrLlAIn_p4je Viel Spass beim Schauen!
Day two of the 2016 Nephi Open, Standard, and 15 meter glider nationals. This was another fun practice day heading out to the east and then down south before swinging west and home. I had a fun fast run down a canyon towards the end coming home. Fun to share! OLC flight trace: http://www.onlinecontest.org/olc-2.0/gliding/flightinfo.html?dsId=5139579 Thanks so much to Andy Blackburn for the amazing airport footage at the beginning. He met all FAA requirements to fly the drone at the airport during this event. The glider is a 15 meter ASW-27B and camera used is a GoPro 3 Black. Location is in Nephi, Utah which is about 60 miles south of Salt Lake City, Utah. Hope you enjoy! Bruno - B4
I am so excited to share gliding Wyoming's Salt River Mountain range with all of you! There are lots of scenes shooting through ridge gaps at speeds well over 100+ mph with the wing tips just feet away from trees. I share my decision making process to try and not kill myself up here in the mountains. It was pretty exciting in the cockpit and this video does a pretty good job sharing that excitement back on the ground. The glider is a high performance ASW27B 15-meter (50 feet) wingspan racing sailplane. It is capable of flying 180 miles per hour and can glide 48 feet forward for every foot dropped. I took off from Logan, Utah during a fun mountain flying camp where we had 40 gliders come from all over the country to fly the mountains. This flight was the highlight of my week. Expect anot...
Set from the nº1 dj in the world in the magnific beach of Barcelona. The video begins far from the stage but later we went in font of it (10-15 meters). Enjoy it, there's some unreleased songs from Hardwell you can hear him saying it! 16:52 NEW SONG!
One of 65 gliders racing under amazing storm shelves during day 6 of the 2016 15 Meter, Standard, and Open Class Glider Nationals held in Nephi, Utah. I really enjoyed this flight. There are some great 10 knot thermal climbs on video and a fast and bumpy final glide at the end. I really hope you enjoy! Here is the gps trace of the flight: http://www.onlinecontest.org/olc-2.0/gliding/flightinfo.html?dsId=5164502 Thanks so much Andy Blackburn for the amazing drone footage shown during the start of each of these race day videos. The glider is an ASW27 and the pilot is Bruno Vassel IV. Camera is a GoPro. Thanks for watching! Bruno - B4
More information: http://www.space-affairs.com/index.php?wohin=mig29nn Okay. Hundreds of our fans asked us: how it is looking during a high aerobatic flight with the MIG-29 "Fulcrum"? So we decided to show it to you! Fasten your seat belts, dim the lights, sound on, switch to HD and see it with the pilots eyes! Have a good flight! Some statistics of this flight: Total flight time: 36 min 48 sec Hmax: 4,500 meters Hmin: 15 meters Vmax: 850 kph Vmin: 0 kph Gmax: +8,5 g Gmin: -2,0 g Pilot in command: Andrey Pechionkin (RUS) Second pilot: Max "The Ax" Angelelli (I)
Get ready to race along with Blaze and The Monster Machines, Nick Jr.’s newest show! It’s time to tear up the track with Blaze and his best friend AJ! The Blaze and the Monster Machines app introduces preschoolers to STEM (science, technology, engineering and math) concepts as they race along pre-set courses or build their own tracks! Each mode – race and build – encourages children to apply critical thinking skills and explore scientific principles, including acceleration, adhesion, force, traction and more! Race! Help Blaze & AJ compete against other monster trucks – Starla and Crusher – in one of three locations: The Badlands, The Snowy Slopes or The Monster Dome! Use blazing speed and problem-solving to overcome obstacles along the way. Each location contains the following: • Envi...
The rain is beating on my face
My bikes still hot as a pistol
Running like i’m in race
Some kind of suicidal missile
They’re in some motel somewhere
My baby donme me low
Thought i’d never be there
But now they’re both gonna know
I been a long time gone
Been real close to hell
I kept my mouth tight shut
Thought they wouldn’t like prison too well
They took the money and run
Left me with a smoking gun
Said she’d always wait for me
But what she left me was misery
I can’t feel no colder
Outside or in
Cut down mosburg in my bag
Five shells for her and three for him
They gone and broke my heart
Supposed to be my friend
This should keep them apart
Hell all things come to an end
Hey boy just tell me the number
Point me to their room
If you want you can call the law
While i play around with doom
When it’s over i’m gone
This tigers running just fine
I’m gonna kiss my baby goodnight