Can You Cook A Hotdog With Ham Radio? Is it dangerous?
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- Опубліковано 4 жов 2024
- I've always been facinated by the physical affects of RF. Today, a light experiment testing if can cook hotdogs with RF. The test incorporated a Chemeleon seventeen foot whip, the Wolf River Coil antenna base, Xiegu G90 and XPA125 amplifier.
To learn more about RF exposure and why you should care: www.arrl.org/rf...
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NOTE: Understanding the limits of RF exposure is important and we as licensed amateurs are responsible to keep everyone safe. This video was an experiment and does not underplay the importance of maintaining a safe station. www.arrl.org/rf-exposure
If anything I get the feeling this video will UNDERLINE the importance of a safe shack!
Use the hotdogs as the antenna. All good and you go George
Vince/n6oa
Timely. I just did a video on the RF exposure thing. ARRL just released a new FAQ on it.
"Honey? What's our neighbor doing?"
"Well, it looks like he's putting hotdogs on his ham radio antennas....."
ARRL needs to ask this question on the General exam so I can get one question right
ARRL doesn't ask the questions in the exams. The NCVEC and VE's from all of the VEC's make up the question pool. They (ARRL) could ask their VE's to propose the question but that's about it.
I’m sorry your experiment didn’t cut the mustard. It nice to hear you catch-up on the comments but I don’t relish the grilling you took. Frank-ly I’m impressed with your dedication to the craft. I’ll show myself out.
😹
That was legendary.
Hahaha
Maybe an amplifier with a PEP of 1500 watts would help...
Edit: Maybe use the hot dog as a 70cm quarter wave antenna? 🤣
I love that green color of the blooming bushes...your yard looks cosy and clean
You need to figure out how to cook it, then learn how to brew beer with it. Either way this was fun!
I have a few anecdotes that might offer insight. Years ago I had a friend that ran a 300 watt amp on a CB rig. His wife keyed up one day while we were in the front yard. There was a Mocking bird on the antenna and when she keyed up, there was a slight popping noise and the bird dropped to the ground dead. No visible burns, just a dead bird. On another occasion, my uncle had a friend over who also had a CB running power, not sure how much but it was a lot. He keyed up and a ball of lightning came out of the tip of his antenna. The lightning extended out about two feet in all directions. At night, it was pretty impressive. I also ran a CB back then and would regularly light a four foot fluorescent light from a distance of about six or eight feet when I keyed up. The takeaway here is that RF definitely has enough power to do some damage, maybe you just have to adjust your parameters a bit
Few weeks ago, had my first encounter with warmth from RF. I had forgotten I was calling CQ on FT8 and was checking my 18 gauge aluminum wire counter poise where it attached to a ground rod. Felt an eerie warm feeling as I touched the wire. This was on either 15 or 20m. I think I might see what happens if I attach a Vienna sausage to the counter poise at the ground rod.
I have a feeling you can get some pretty good success with a highly directional antenna and 1000 or 1200 W, in the 2.3 GHz band. Maybe even build a special box to reflect The energy around until it can be absorbed into the hot dog. 🧐
Interesting ideas to play with though, thanks for sharing.
I'm sure you said that on purpose, but at that point it's literally a microwave hahaha. Although the same principle still applies, the higher frequency RF resonates better with water molecules.
Josh, just connect the hot dog directly to the output of your amp on maximum power full key down. It'll be interesting to see which explodes first, the amp or the hot dog.
I’m think the amp would fold back. 🤣
@@HamRadioCrashCourse Aw darn, oh well it was worth a shot.
Josh, I'm guessing the foil will be like a faraday cage and protect the hotdog. You need to direct attach the dog to the antenna, maybe then wrap it to trap the rf.
Yep, there's no RF inside a faraday cage. The inside piece should be plastic. Even better, spear the hotdog over the antenna base.
Perhaps I should watch all the way thru before opening my mouth. I should have known you would have seen the problem.
With that said, I don’t think it makes a faraday cage as the foil is connected to the antenna. 🤣
@@HamRadioCrashCourse Still the energy should be diverted around the outside of the foil packets
This makes me want to go over to my local AM broadcast station where you can literally walk up to the transmitting antenna and touch a hotdog to it with a very long wooden pole. The hotdog is connected to ground. It’s running 10kw. My prediction if I did it would be a nice yellow arc to the hotdog and burn it.
No you HAVE to use ballpark frank cheese dogs.
That could help. 🤣
Good call!
Wrap them in saran wrap and hit them with 1.5kW. Not sure, but I think that may work.
Hey Josh cool experiments. I bet that at 440 mhz at something like 600 watts output I bet those hot dogs would be cooked just fine in short order.
Make a 70cm yagi antenna, get a metal mixing bowl, put the hotdogs in the metal bowl 70cm away from the tip of the antenna, and pump all you can from 70cm into the bowl.
I have no idea why this popped up in my feed two years later, but thank you! You made me laugh. RF exposure is a real thing. The FCC has required all amateur radio operators to do a RF exposure test for their stations. In my case, running 100w on all HF bands, I only need a 2ft. radius. On VHF/UHF running max 50w I need a 5 foot radius. The real danger, however, and you didn't cover, because most hams don't have the capability, is the 1.2Ghz band (microwave), which, even at low power (like 2 watts), will cook a hotdog if you happen to be standing in front of that beam.
This reminds me of how one engineer suddenly realized he had a melted candy bar in his pocket while near a Radar Testing Rig (mmWave) which led to the invention of a microwave oven.
I like your ball cap. Haven’t heard you on the nets. Hope to hear you soon 👍
You should have cooked ham Josh.
Hmmm, normal hotdog cooking with radio waves (rf)...
A) use microwave oven - approx 2.5 GHZ. Set @ 1100 WATTS! Cook for about 2 minutes. (No! Don't wrap them in aluminum! Arcy-sparky!)
Alt. Method - find a much bigger microwave; i.e. million Watt radar from an F-14 TOMCAT! Put hotdog on long wooden stick (warning: point radar over side of aircraft carrier away from everything; including other ships & have fire extinguisher handy!) - hit radar test for about 2.5 seconds - with stick & hotdog in front of radar dish. Finished & cooked hotdog ready to eat -yum!
That's right - 2.5 seconds!
[For the record; 4 seconds WILL ignite both the dog & stick - hence, the fire extinguisher!!!]
By the way, we really did use this method for the 'quick test' of the radar.
It's all about the power baby! (& frequency - we used a much higher frequency than a microwave oven)
This was a legitimate question of mine.
Fallow up question: at what range?
My goal is 100 yards
What?
@@HamRadioCrashCourse at what range can you cook a hotdog?
I’ve wanted to cook one at 100 yards since I was young. At the time i planned to disassemble a microwave oven. Several ovens later, I’ve learned to fear disassembling the magnetron.
Any tips on antennas?
@@doomgod314 David?
@@devineskridge5279 Nope. Not david
@@doomgod314 won't work. Propagation will make sure of that. You'd be looking at 400,000 watts at least and a custom made waveguide and horn that would have to violate the laws of thermodynamics. Let me know if you figure it out. Some men in black suits would be very interested
In stitches..... laughing so much. On a serious note, have you seen the UK OFCOM proposals for risk assessing your antenna set up? Check it out, would love to see your views, given your in depth experimentation
Hi Josh,
You had one positive result. it made me hungry for some hot dogs. :-) You and the family stay safe. 73 WJ3U
Hot dogs must be wired in series with the antenna. Like loading coils to block and absorb the lower frequencies.
Try 2,400 -to- 2,483.5 Mhz range.
Then _and only then,_ will hot dogs teleport and *re-appear* at the far end of the Smith Chart.
Never tried like this but I have heard stories about EME stations setting a birds nest on fire and other tales about holding a hotdog on a long stick in front of a microwave dish and cooking it in a minute or less.
haha , nice funny experiment , thx for vid . Maybe you should have replaced the capacitor of the loop with that saussage , and tune with mustard tuning lines ;-) .....
I was under the impression that most of the rf on a perfectly tuned vertical came off the tip of said vertical.
The sun UV could be a factor to consider.
Not cooked, but hotdogs are pretty good cold if you're truly hungry.
You shielded them with foil!
Stick one on a metal skewer that is grounded and place it 1 foot from the antenna to simulate a human standing to close to a mobile whip. I get the 7 foot dish up and the 550 watt 1.2ghz amplifier I could dangle some in front of the feed horn LOL
Maybe finish the video???!
The foil will block some of the RF. Put the hotdogs in a zip lock bag and secure it to the antenna with tie wraps. Oh, and add a KW amp to your little radio.
Watch the whole video. 🤣
It was not all that many years ago when HF diathermy treatment was frequently used in the treatment of muscle and joint issues. Many physicians kept diathermy machines in their medical offices--the machines generated a few hundred watts of RF at about 14 MHz, causing the treatment area to be warmed internally. It was a gimmick (quackery) at best and hardly a safe one. In the last few years, however, some patients suffering from dementia have been shown to exhibit improvement in their condition or even reduction in the advancement of their disease when treated with magnetic fields focused on certain brain areas (QST--month?--had a short piece concerning this back in 2019). I do not know if enough data concerning this treatment has been collected in order to show any statstical significance (or whether it turns out to be just the luck of the draw).
First Contact with a Hot Dog....Last Contact being the Hot Dog guy. I have much to look forward to in this hobby hahaha. Seriously though appreciate all the knowledge I learned from this channel.
#TeamReplay for the win!
Next time stab the radiating element through the dog
Josh Nass is the Linus Sebastian of ham radio :D
I wonder if you ran coax or wire through it...
higher up on the whip should proivde higher voltage, right?
Hey this got me thinking about a part 2 and I’m curious myself,
What if you used an end fed or end fed half wave, ran the wire through the hotdog (somehow), hooked to your 811H while transmitting at your normal operating power???
I was talking about amplifiers once and a gentleman said “well if you pump in 1500w to your end fed in the tree, transmitting long enough you could catch the wire and maybe the tree on fire” How about a little ham radio mythbusters??
Hehe , were I been. 20 years ago when doing sar ,NZ army donated 20 hours chopper time with crew..we sizzled a sasage in 20 seconds peeled off an fell on our plates on the grass , also they were bossy about being by tail antenna while transmitting..ang gas smell they throw out our packs in flight..500 Watts think.
the aluminum foil is a faraday cage protecting the hot dog.. if you want to cook a hotdog you will need to use 2 meters or higher and shove the hotdog directly onto the stinger. and keep it to the tip of the stinger. or cook them on 10 meters with 500 watts
My guess is that to heat it up significantly you'd need to be running a frequency that has a lower wavelength as the size of the object, like a microwave at 2.4GHz, but then, I don't know if you can run the power that would fully cook a wurst
Un buster ,I've seen it on the chopper tail antenna, 20 seconds an split off antenna .it was a demo for our young team($@$8) ignorance to high Watts..an also it was dinner time around the camp...It must have been 500 Watts HF,
Fact: Hundreds of thousands of people are cooking with RF as I type this, for forty years or more - using a (shared) amateur band, without a license, 2450MHz.
A hot dog is too small to efficiently absorb the energy of waves many meters long, and what little energy that does get absorbed blows with the wind.
😳
@@HamRadioCrashCourse
It's called a microwave oven.
This is going to be great! Looking forward to this.
Ball Park? Yeah okay. I'm a Sabrett guy personally, but it's cool. LOL ;)
They plump when you RF them!
I wonder what would happen on a high voltage point at the end of an inverted vee.
It would have worked on the hexbeam. LOL Leah, Josh needs another hexbeam in the interests of science.
50 watts is useless, you will need a few hundred watts say 300+ try vhf band2 or may be 144Mhz 2m band, u need a lot of power to burn and cook a hotdog. A 2.45Ghz 1kw microwave works, its a radio transmitter. Note:- attach the hotdog and stand well back behind a rf shield. Caution be sure not to damage the rf amp, from excessive SWR.
The antenna will not cook the hot dog but will the skillet antenna?
Proof that an ATU can even tune a hotdog antenna
Remember those hot dog electric cookers that cooked by running current through the dogs. It made the hotdogs taste like burnt wire smells.
I really thought direct contact would have done it
You should have put a hot dog inside a coil with a parallel cap resonant on 10 or 6 meters. It would not take many watts out to cook the dog and the RF would not be wasted radiating out to space. Putting them in aluminum foil prevented ANY RF from passing thru them.
Great video!
Ah yes, the pioneers of ham radio :) very entertaining video
Need to do test 2.0 and bring the Ameritron out with some watts
Do I see a ham radio cooking show in your future? :-D
Can’t wait for your wife’s comments on this on the podcast 😂😂😂🌭🌭🌭
Lol. I’ll ask her about this on the show!
I don't know if it would cook a hot dog as we've all been told but you are definitely in the wrong bands. 30-300 MHz is more likely to work. Get into the gHz and odds are even better. So 6 meters might have given you a chance.
Also, FT8 is on standby a large percentage of the time so that's not helpful to the purpose. You need a 100% duty cycle. While digital, FT8 transmits then listens so you have a 50% duty cycle.
And yes, the aluminum foil (probably) completely or largely nullified any RF heating as RF travels on the outside of the conductor. Thus, even if the RF traveled on BOTH sides (and not just the outside) of the foil, you've again reduced the RF available for the cooking.
And now that I've seen this I'm going to have to do some experimentation. I think 6 meters with a continuous transmission (in an appropriate part of the band for experimentation) MIGHT do the trick. I suspect 2 meters might work better than 6 with the same power.
Why not try running your amp at max power and try it again?
Gotta try with a 1kw amp next
I knew it. You can't cook dinner on your antenna. Glad you finally proved this.
Energy = hf. Where h is a constant and f is frequency. Need to be in Giga hertz range. But even a microwave oven is around 700 to 1500 watts And that is focused. Therefore no surprise it didn’t cook
Try turning a microwave oven into a transmitter. lol
Can you transmit HF using a gas BBQ (presumably with the gas turned off)?
I watched a video following Field day a few years back . A group oh hams had forgotten a Balun so they wrapped the Coax around a stander plastic coffee can (it had coffee in it) . At the end of field day the coffee roasted to a dark roast . What you need to do is spend all day playing radio and you might get some better results. Or you can do what I did and grab the Antenna bare handed while transmitting. I wasn't thinking good thing It was on low power. Another thing to consider is going to a VHF or UHF freq. and trying it there. Microwave ovens are in the 100s of Mhz range . Remember to protect your self from RF you have to calculate Frequency Time and distance. To try to cook those dogs in a shorter time you are going to have to go to a higher freq. . Possibly 420 band
Maybe 6m and put the hotdog a few inches from the antenna?
good job from indonesia
wait a minute.. AFAIK the most efficient way would be to make sure the wavelength is the same or shorter than the height of the hotdog, isn't it? well Josh, now's the time to D.I.Y a 20 meter hotdog
Did the hotdog increase antenna efficiency?
Cut about halfway through the hot dog and sit it on a G5RV so the wire is going through the hot dog 🌭 using high power in a voice mode. De N9NJN Jeff.
I think that you need to make an antenna out of the hot dogs!
🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔👍
New Contest: HOTA (Hot dogs On The Air)
I was thinking.... a raw dog, taped to your beam element with a kilowatt . Just for the sake of science.
can you do burgers on a sat dish next please
Did you ground those hot dogs?
Watch the whole video. 🤣
How do expect the hotdogs to cook when wrapped in a Friday shield
Watch the whole video. 👍
Your science fair project wasn't thought out very well. Try electrically grounding one "side" of the hot dog (not the end, but the side) and expose the opposite side of the hot dog to the radiating element. Repeat the test. While the hot dog is absorbing the energy, it might be necessary to wrap the hot dog in not conductive insulation (a non-metallic thermal blanket) to allow the heating of the hot dog to not be lost to the surrounding, moving air. Possibly use a infra-red camera to observe hot dog temperature rise above ambient.
Watch the whole video. 🤣
Scientific method FTW. This should included in the technician, general and extra classes. I bet John Taylor would never have thought of testing FT8 this way @ Princeton.
@@bryan94591 the creator of WSJT-X
@@bryan94591 en.wikipedia.org/wiki/Joseph_Hooton_Taylor_Jr. I stand corrected with Joe instead pf John. But yes, K1JT, Joe Taylor is a Nobel Prize winning physicist who, among other things, is actively developing WSJT ("Weak Signal/Joe Taylor"). Cheers and 73, de HI8ILO / KC3RRN
I hate that I watched this and don't have any hotdogs in my fridge.
I could bbq a wild boar with 50 x 2SC2879's...char broiled, well done...burned. Just go and make your order. Don't worry, I'll wait... 😂😂😂👍
Are Ball Parks or Oscar Meyers more resonant? LOL
Damn it!! Now I want a hotdog!! 73 from VE6GCM.
The foil is shielding the RF from the hot dog .
Watch the whole video :D
Use the hex and 1500 watts
Can I use this to fight the new EMF regulations being laid down by Ofcom for exposure to r.f. and keeping people a safe distance from aerials? They say the higher frequencies are safer so less distance is needed. Do they understand what a microwave oven is?
G4GHB.
Not enough power! Even if you magically had perfect swr, IT WILL NOT COOK! Just think of the thermal mass of an antenna in relation to how much power you are dumping into it. It would be like asking room temp air to cook it . Hell, you'd be better off blowing on it with hot breath 😂 rf burns are tricky, these usually happen when equipment is damaged or not working correctly, and it's not the rf doing the burning, it's usually a burn from someone dumping a crap ton of power into say like a piece of crushed coax.
think it would be better if they weren't shielded by the foil
100 watts isn't enough. You should do this again at 1kw :)
Watch the new video lmao
Skin effect remember RF and electricity travels on the outside edge of the conductor for the outside edge of the aluminum foil was your radiating element therefore no RF reaching hot dogs whatsoever
Keep watching… 🤣
I want to see Gordon Ramsey react to this.
Maybe the hot dog needs to be grounded
The RF just ran on the skin of the foil not the skin of the hot dog, try putting the dog on the antena tip like you would on a stick over a fire.
Can you cook a ham while you dog eats a hotdog?
Intrigued!!
How did you expect to absorb rf through a protective foil shield? Please try the experiment with plastic wrap instead. Our bodies have no metal shield.
You didn’t finish the video. 🤣
@@HamRadioCrashCourse Hey, what matters is you caught this in editing, and at least tried to amend the video. Even if the result is the same, doesn't mean people won't comment about it though... Heh, that was a good way to end my Monday Josh. 73 de W8IJC
So now maybe the buttheads that complain that if you have an HT with over 6 Watts you're going to cook your eyeballs, can just be quiet now?
Try some bacon and then it really would be 'ham' radio.
leave to Josh , Mad scientist lol.