Directional Antennas

[mashurst]

What a great way to explain the yagi! I love the light bulb setup. I'm so making one. thanks

[dan30cal]

Awesome video!

[mrmilleniumproof]

Thats fresh bounce signals off the moon. I was aware of skywaves. But I didn't think that you could bounce them off the moon.

[kishoreVU2002SWL]

hi diana,

ur fantastic in explaining the yagi antenna !!

[john600cc]

Cheers ;)  73's

[Sorebonz]

NIce. Particularly interesting demostration of the physics associated with a yagi. Very helpful, as I am a visual learner. .

[quidproquo2004]

88 de KF5DWR

[tyronesantikaTV]

Cool as so i was just wondering why do you comunicate with satellites????

[zooky443]

You are amazing.

[themeaningoflife38]

Wow Diana you are so perfect

[visnevskiscom]

nice. maybe could mention vertical axis too :)

[zidane444]

thanks allot for the sharing ! relay help.

[2627mhz]

Good job...

[ax25100]

Interesting .. 73 PC1L

[yigalrechtman]

Excellent!

[QatarOwner]

nice video

73a

de A71CV

[JohnMHoyt]

Thank you very much for your video. I'm going to show it to my daughter and son who are interested in getting their ham radio license.

73 DE W5UGD & W5RIT

[jekader]

really interesting stuff! Thanks!

[TheFaustianMan]

Tesla was right about sending power through the air. Too bad he ran out of funding.

[fishbolt]

Very neat. Thank you.

[SouthTuningSwiss]

Nice vid! 73`s from HB9THC ;-)

[todd3293]

great video! who knew there were such cute ham operators out there? 73 Diana :)

[Time2Repent]

Do not those who plot evil go astray? But those who plan what is good find love and faithfulness.- Proverbs 14:22

[leloodallasmultipass]

awesome. luv it.

[Lazydogtv]

Cute & smart. I like^^.

[patrickdarcy]

well done

[8aetroya8]

keep bringing the tech videos, try to ignore the human mutant scum that berate your videos, they apparently are between racial rants on XBROKE Live.

[azukita18]

She looks like she's a really sweet person. Really smart too.

[VonDenHottentotten]

I've seen sweeter. The glasses ruin it for me.

Oh, wait, dude! This video isn't about cute women.

[nsasigintel]

she needs an r2d2 t-shirt

[MotorolaOpus]

ROFL

[PasswordOVER9000]

This girl is super nerdy. Oddly I don't find that attractive........she's still cool, though.

[havocdaemon]

A cutie that has a DIY satellite connection? This girl needs a fan club. >.>

[musicman02]

sooooooo cute. <3 you.

[lehman]

Is the surname 'Eng' related to the surname 'Ng?'

[ericbwertz]

@lehman I *think* that Eng/Ng is the Cantonese equivalent of the Mandarin "Ying"

[mongojerry72]

Nice demonstration.

A fashion designer with brains? Refreshing combination.

[westkan]

Do we assume U ID correctly at the end of every transmission during the course of making this video? :) A good demonstration for using such a simple setup, and using VHF.

[sandyny]

BAHAHAHAHAAA

[kellyrkeeton]

good heavens how unsafe, we can assume its 2m or 70cm which has greater effect on the body and then you put gain to the antenna and stand in front of it!! also not showing that you made a transmission on a radio with no identifier? education sure but missing out on some serious safety and governing rules might as well just play with microwaves they are a lot cooler if you don't care about safety

[chrisofcolombia]

Kelly: Re safety, even with 2 or 3 directors, 5 watts isn't going to fry her brains aye?

And as for identifiers, what are you - one of those creeping FCC anal retentives who made CB such a nightmare of regulations and threats and fines for us back in the 70s? Relax and enjoy life a bit!

[westkan]

The CB radio service was a usable radio service until every fool and their brother bought one and started ignoring regulations that where in place since the late '50s. I also made a comment about ID, but it was more in jest than anything else. I knew she didn't dare ID properly, because the YT JA who make crude sexual remarks could learn her location.

[chrisofcolombia]

Well, you're right about every fool and his brother (your forgot their respective dogs too!). But my point was more the classic "establishment" attitude... I can almost hear a faint Gestappo accent (with all due respect to the Germans) "Vee haff ways ov makin yu obey... YOU VILL OBEY!"

Establishment is always threatened by civil rebellion (real & imagined) and can only resort to stricter enforcement. Listen to yourself: "Missing out on some serious... governing rules"! Lighten up Kelly.

[westkan]

@chrisofcolombia what in the world R U going on about? Save for gross interference issues there was little enforcement of the regulation during the height of the CB craze. Call me crazy, but when it comes people ruining what was a good thing by ignoring regulation for their own selfish reasons, I''ll support the establishment enforcing reasonable regulations. Just looking out for my own interest in using a resource I'm more than willing to share. Nothing more than that

[chrisofcolombia]

OK, have it your way, Kelly.

I guess all those FCC cars with DF loops trying to triangulate (horror gasp) operators without a license, but who otherwise respected the courtesies of vox operation... were all our collective imaginations aye? Enforcement for Enforcement's sake (oh, and to get the money out of their pockets which THEY OWE US!!!). Just catching gross interference were they? Sure, sure.

I don't think we've anywhere much left to go with this convo.

Have a good one - and cheers.

[kezza069]

nice vid, very interesting :)

[dave251430]

Cool and Thanks for the Video Diana !

[RJHEllis]

Is this a step toward wireless electricity without batteries or solar power?

[744682532]

Nicola Tesla experimented with wireless electricity. Do a search on Google for wireless electricity. It's quite feasible for small devices.

[monkeysrcute]

He also had a love for pigeons :P Creepy guy.

[RJHEllis]

oh ok

[dfg1ml]

simply genial

[nahjos]

Excellent video Diana. Ignore the stupid jokes...

[lido3]

Nice video!

73's from Croatia! Boris, 9A6KTB

[PetrFM]

Geek chic

[NYCkush]

shes cute..

[yodude400]

WIRELESS ELECTRICITY?!?!

[Drobnjak1]

Superb video Diana. Very good job. Keep 'em coming.

cheers

[altradude]

So what you are saying iswith a good antenna I could light my house? ;-)

Just kidding, awesome video!!! Learned allot.

[FailedSquare]

i think shes cute.

[vlajkozr]

@FailedSquare

well you are a retard

[Olirap]

well you cant say shes ugli

[VictoreCelia]

super

[kahvac]

Excellent video ! the demonstration was very clear and easy to understand. I just might build my own. Thanks for taking the time to make it.

[davidl343]

wireless power!

[miledbill]

Great demonstration, Im a Ham too!

[jimhale777]

Nicely done. That makes it real for me.Thanks!

[bodintinis]

and whats the connection between directional antennas and body parts?.you guys are insane LOL

[westkan]

RF heats body parts.Directional antennas increase the level of RF in a certain direction, as vid shown.

[redgy83]

WOW I JUST LEARNED SOMETHING!

[checkmyvagina]

COOL...my buttplug has a build in camera and`the wire tend to crawl up in my colon..with an antenna like this, all my problems are solved!

[FailedSquare]

i lol'd

[Sirbirdbill]

You need a shorter dress and wear nylons

thank you

[ringes70]

Isnt everyone tired of watching asian faces on you tube????

[Froggy19510]

No but we are tired of stupid jackass redneck swamp scum with little penises and brains with too much time on their hands that are so insecure in their manhood that they have to pick on a woman who is smarter than his whole inbred family. You are a pathetic bigoted little maggot sucking the putrid flesh of dead rats and you can only feel good about yourself if you are tearing some one else down. Any way I have to run. Tell your mom that I will be sending her my man brownies soon. Love..Dad

[GutpileCharlie]

Very good video, very informative.

[ringes70]

Why dont you play with a dildo better you ugly ass gook face!

[thpoul]

always enjoying your videos. thank you for the wonderful information you share Diana.

[Leszarom]

why did i just watched this whole thing?????

[invisibletime]

cool

[HGarden27]

wate if your sinding power in waves threw air. then it is posable to have electric cars the would never have to run off gas or ever never have to die bc you could constily add power to the car.

[pfun41]

@HGarden27 that would be the principal behind the tesla coil, unfortunately once you have enough electricity to flow through the air youve created a bolt of lightning.

[HGarden27]

o i see... well there must be a way to keep power in a wave like from. i think that once we figer that out we would be able to work in small worm holes in time.

[ClamChowder44]

hey you're from project runway

[2ot001]

I bet my radio and antenna can transmit enough power to blow up that lite bulb and give her a new hairdo

[zeproo]

women + technology = sexy

[adriancastravete]

Wow, this is very interesting. I always wondered how signals can be directed.

[kd1s]

Very good demonstration of the operational characteristics of a directional Yagi.

And you were keyed down for some time, you should have at least ID'd.

[guns4good]

ID'd? She was using WAY low power and a directional antenna aimed at...nothing. The likelyhood that anyone in her area, who happened to be on the random frequency she used, actually even knowing she was keyed up is slim.

Just saying. ;)

[kd1s]

Um, whenever you key down it is good practice to ID unless you're radiating into a dummy load.

[rudyiking]

Even so, rules are rules.

Neat demo!!

[MorikoKitsune]

wow she is just every where...she has been on threadbanger several times.

[pagafantas]

i like that the videos will be subtitulated, i don't understand english talking

[st2nh]

Great work

tnx for the wounderful viedio ,FB, 59 PLUS

notice:- make sure not stand infront of yagi while transmmiting . safity first :-0

73&88

ST2NH

[mallard003]

what I'm wondering is why she needs an antenna that can communicate with sattelites

[taz3000nice]

to talk with E.T XD

[guns4good]

There are communications satellites in orbit that are used exclusively by amature radio operators (for DX, packet, TV, RTTY, etc.). Also, the ISS and Space Shuttle have ham rigs on them, in order to communicate with them, it helps to point your signal in the right direction.

[rudyiking]

Because "Ham radio" has satellites in space. So if you want a good contact you need a good antenna.

73, KCØGQT

[Froggy19510]

This one of the best demonstrations of directional antennas I have ever seen. Dr. Hidtsugu Yagi would be proud of you. I hope you keep making these amateur radio videos. How about one on quads for six meters? Thanks!

[jedreadproductions84]

that is very interesting

[Dirkzero1]

imagine 300 of these, pointed straight up, pushing 50 BILLION watts of energy into our upper atmospheres... think that might create some problems?

[ledbulbz]

i smell rhetorical sarcasm..lol

[Xiver1972]

No, because the amount of energy at any given point is inversely proportional to the square of the distance from the source to the destination.

So if you transmitted 50 billion watts of energy a mile it would be reduced to about 1500 watts. That number also decreases dramatically depending on how far apart the sources are spread.

[kd1s]

The square of the distance rule.

[MrShoy]

Thanks! :D

[pakscienceclub]

Great info..... Thanks

[VideoGuyNC]

Neat! This would be great for a young student who is just developing an apatite for science.

[basbrun]

Wow ... thanks for the good info!

[SimonSays5995]

lol

[stirlingfromla]

Great info and wow, she's cute!

[bigbrothermaster]

hot smart asians XD

[matthewbond007]

nasty...

[VViitard]

wtf, thats my aunts name lol

[ankh99]

I'm sure quite a few people share that name... but I believe she is the most famous one (considering her Project Runway fame)

[arixrobotics]

wow that was fantastic! great explanation! i wish my RF lecturer showed us this experiment before...

[drakon32]

Excellent!

[sim2lew]

What's with the polarisation on that antenna? Looks like it wants to be vertical, but horizontal at the same time. The dipole is on horizontal, so why the vertical directors? But there is another dipole on the vertical axis. What's going on there???

Also, space is only 60 miles away, not 'millions'...

[Stylizedplayer]

I'm pretty sure she was talking about those rovers out in space which ARE millions of miles away

[sneakerset]

Diana's set-up is a home-built cross-polarized dual band antenna(2 meter/transmit and 440 mhz/receive). For a more detailed breakdown of the operating aspects of LEO Amsat birds(including avail. freqs.,passes,and Doppler shift) please visit YT user K7AGE....or (Google)Amsat (Emily's primer for new users).

[westkan]

I believe she said OUTER space.

[rooftoptile04]

FREE ENERGY MAN! FIGHT THE POWER!

[catmaster141]

How is electricity turned into radio waves? i would like to learn more :P

[catmaster141]

Coiled wire im guessing.

[flahr1]

@catmaster141

any alternating current in a wire creates radio waves...simple huh

Satellite TV, Cell phones, microwaves, bluetooth etc. all transmit are radio waves with different frequencies (of alternating current frequency).

[catmaster141]

i see...

[widget1985]

Radio == Magic

[Pandacycle]

Bring her back for more ham radio videos!

[bill48m]

i wish she was my teacher

[xmaddict]

wow, cool!! I love things RF!

[adu4278]

Hello, So is there a way to increase cell phone reception in a low elevation area? The surrounding higher elevation has a strong signal.

[zetimzetimzetim]

What would be amazing is if someday they can use this type of technology to charge portable devices such as laptops or cell phones

[westkan]

Someday was yesterday. They exist already, albeit somewhat clunky add on equipment

[bilyisbored92]

can u charge stuff with that

[erallen97]

i wonder if that causes cancer

[Jourei91]

Everything can cause cancer. The effect just is right next to nothing...

[AVerbene]

wireless energy

[urmommawasfun]

can you make a vid showing me how to make a yagi that would work for 2.4 ghz or 900Mhz?

a smaller version would be nice tho...

[catmaster141]

thats a bit high frequency, dont you think?

[ankh99]

sounds like someone wants to boost their cordless phone signal.

[urmommawasfun]

haha i guess someone might but im doing FPV fist person view flying. essentially i have a remote controlled plane which uses 2.4 ghz and then i have a camera on the front of the plane which sends a live video feed down to me using 900mhz so i can see what the plane sees. my goal is to fly 5 km from my house... but i need a big yagi for that...

[Quazzar36]

You mentioned sending signals to satellites. What are you sending to satellites, who owns these satellites, and do you get a response signal?

[catmaster141]

Thats what i want to know too.

[rudyiking]

She is making contact with other "Amateur / Ham" operators.

I've never done it yet myself, but since she wouldn't have to much time to chat, most likely they just exchange basic info.

The satellites can be owned who ever built them.

If you get an Amateur radio license you too could talk on those satellites.

73, KCØGQT

[freedumfighta]

nice vid but all of that bullshit just to light a little freaking bulb that u can do with the flip of a switch...

[rudyiking]

Wow man. Are you saying there's a light switch that could broadcast an RF signal and power a light bulb wirelessly?

Cool, I'll take one.

[Caveman0713]

not necessarily hot but I'd still fuck her. I am pleased with the level of explanation.

[BrysonLax]

yeah but thats just bc you are a caveman hahaha

[Tafheemwii]

You would?

I'm pretty should I wouldn't..

[MICROmor]

that was a really cool vid, nice!

[jenn011754]

I like the vid and am glad for this level of explanation. I am much clearer now on some aspects that were a mystery. Thanks, Good Job.

[capman911]

we used to that with a florescent tube and point the end next to a vhf antenna on top of a vehicle and cause half of the tube to light up.

Great video.

[pinchiecajones]

you can even use a yagi antenna on a uhf & scanner radio

[Jacobsenacc]

It looks like this technology could really send small amounts of electricitry across a room...

Too bad you get radiation poisoning if you use it for that purpose.

Maby we could power more than a lightbulb in the future.

[simgag]

@Jacobsenacc I think that a company like sony or JVC have made a digital camera rechargeable by only putting it anywhere on a flat base (no electrical contacts)

[Jacobsenacc]

Yea, I seen a demonstration made by some large company, lighting up a lightbulb from across a room.

But they said then it was dangerous from doing it across a room.

[scott91372]

Very good video.

[ElectricTutorials]

Awesome video and her nerdyness is super hot lol

[Probewitch]

Sweet.

We could use a teacher like that

to tour our motorola centers.

[esthermofet]

Makes me want a yagi... and a better transceiver than the one I have now. Who says she didn't transmit her callsign? Maybe she transmitted it when the camera wasn't rolling (or maybe the callsign clip just wasn't included).

[sneakerset]

The idea of using a small LED as a visual RF detector is very cool....and a great teaching aid,Diana. Well done. Be careful about posting your call on this venue. I'm hoping you'll consider doing a vid. on the ARISS/ school program. Waving a hand(from SoCal),and we'll see ya on the Amsat birds......

[tj7729]

Wow, that was really helpful to understanding the reality of yagi's. I've always 'known' they work but never thought it could be so clearly demonstrated. Nice job!

[YoLninYo]

Have you heard of "encyclopedias" or this newfangled thing called Wikipedia?

[jdogface]

damn I love smart chicks!

[mzoli1222]

This video was really, really worth watching! Thank you Diana!

[kickercaster18]

you guys are kinda pervy, and that's not cool. :(

She has a sweet personality, and she's smart, and that's why she has this job in the first place. So please stop talking about whether or not you'd do her or not.

BTW- this vids about radio waves...in case you guys hadn't noticed. TT

[Poulpc]

cool

[intimeoflilacs]

i wouldn't be surprised if it was edited out. i wouldn't want a bunch of mouth breathers knowing my call sign either.

[K9LLL]

Wow, this is terrible radio practice transmitting without broadcasting your call sign

[jedichad]

Rofl, Yeah. I was going to say, "Maybe she is using a Dummy Load" But then I realized the huge antenna sitting in front of her.

[mrfnk]

@jedichad , you was going to say? you did say...

[jedichad]

No, I didn't.

[soseboogs]

cool.

tesla~ish.

Now I want to toy around with how far I could light a lightbuilb

[bassxbox]

nice very nice

[SoloTotoCoyote]

Cool......... although there's probably some poor guy in her apartment building wondering why his TV reception has suddenly gone bonkers. =D

[Drummingwizkid]

do you mean through something like rabbit ears?

[choosea44]

how did you make the ligt antenna thing

[JDogHerman]

Good Video.

Keep up the Ham videos.

Maybe show us how to make that receiving antenna

[rlewis1946]

Excellent demonstration; very instructive. First time I've hear of antenna elements referred to as mirrors and lens. Keep up the good work!!

RL Atlanta, GA USA

[hacktheplanet90]

i did not realize that

i do give her kudos for having an interest in radios

i would love to meet a girl that be this involved with technology and science

[FelixTheHouseFreak]

Wow a girl whos an amateur radio operator! I didnt know that existed!

[shantred]

You guys are retarded lol. This isn't the weekend project. This is one of the MANY random videos they have.

[gmw1964z]

are you trying to get cancer? Please don't stand in front of that antenna!