Extend Handheld Radio Range With a Yagi-Uda Antenna.

[@crocodiledondii]

Fantastic music bed! I *LOVE* listening to it while I watched the vid!

[@James_Bowie]

I'm the opposite, _especially_ when it's a loop of electronic stuff.

[@krisraps]

The Beam is Like A Sniper, Wow! So Cool. If You Know Where The Spot is - PERFECT !!

[@cesarzillopu9czl985]

Good job! Thanks for the class.

[@James_Bowie]

Perfect for zooming in on sources of RFI, like powerline noise.

[@somarmd]

Nice demonstration. I enjoy your videos very much.

[@charlieb.4273]

Brilliant video. Thanks for sharing.

[@jmd62800]

👍💪 good idea

[@josselin6267]

J'avais pas vu cette vidéo 😊, super

[@survivalcomms]

That worked out great. Thanks for sharing !

[@davidniehoff899]

I have a homebrewed 5 element Yagi I made for hiking. First test with it got 122km on 5 wats on 435MHZ. Looking to go higher in elevation and push the limits of UHF.

[@RadioPrepper]

Great, was that using FM?

[@davidniehoff899]

Yeah that was FM.

[@RadioPrepper]

FB!

[@graysonstanley7467]

With al the precise measurements, why is it not clear if the element spacing is on center or space between? I would like to know which...help thanks

[@eduardopower5254]

Excellent video!

[@TobyKoehn]

great vid, good work 73

[@richardbutterfoss2353]

Thank you!

[@richardbutterfoss2353]

KD2QXQ

[@oladapoaloba]

Awesome video mate. I'm a novice in ham radio just watching your videos is quite educating and informative. I'm gonna try and build one thanks for sharing. Ah I've subscribed to your videos. Have a good one mate 👍😃

[@RadioPrepper]

Thanks.

[@kaikart123]

Well, your antenna has 40 degree beam angle, it's shouldn't be that hard to point to the target. Anyway you got up to 13 dbi gain over there. Nice.

[@karlmadsen3179]

Don't worry about offending people with the coiled snake flag. It was supposed to be a warning to those who would deny freedom. Don't tread on me. Freedom. Forever.

[@James_Bowie]

Never any need to apologize for the use of global metric. America will get the message one day -- and it's not like they don't have metric rulers available.

[@crocodiledondii]

btw... 11-element in the HTML, 9 in yours. No wonder it's so sharply directional 😊

[@iainmeteorscan1555]

Hi Dashing Donny - 12 elements in the HTML - just saying!

[@gravestonemyth]

Good video, Gil. Have you tried listening to the ISS repeater with this antenna? I might build this version and a 2M version to optimize my handheld radio’s performance through the repeater.

[@RadioPrepper]

Hi, not yet :-)

[@janlamprecht470]

Hi. Does the length of your coax cable have an effect on gain? Say 6 meters?

[@RadioPrepper]

No. It would have to be longer to start seeing losses, but it depends on the quality of the coax. I suggest LMR-240-UF for anything longer, or even LMR-400 for fixed installations.

[@janlamprecht470]

@@RadioPrepper Thank you Gil. I want to make a permanent fixture for the yagi. I will see whether I can find the coax you mentioned here. Thanks again.

[@RadioPrepper]

It's pretty common, albeit a bit pricey..

[@ElectronicNoobBlog]

I like the idea but i need something more "tactical" (for portable use, that i can get into backpack). It's too long for carrying so what would You say for using a "tripod telescopic leg" for a main shaft construction that could be easy retracted , and steel measuring tape covered in heat-shrink tubing as directors, reflector and driving element? When not needed they could be folded to shaft and attached using Velcro for storage and carrying. Tell me driving element should be electrically isolated from everything else except hot wire, but what about reflector and director? Could they all be grounded including shaft in that case? Regards

[@RadioPrepper]

Give me your email...

[@ElectronicNoobBlog]

I send email address via KZbin message

[@MoTown44240]

No match on the driven element? I would think at least a hairpin stub would be required unless is frequency specific for the repeater frequency only. 73 KB8AMZ

[@RadioPrepper]

Hi, I haven't checked yet...

[@marcisberzins]

Thank you, Gil, de YL3GU

[@belabertalan]

Have you designed the driver element's length for the receive or the transmit frequency? As when working with repeaters, the two have an offset of about 7 MHz on UHF?

[@RadioPrepper]

In between...

[@RadioPrepper]

Not sure actually, it was a long time ago...

[@belabertalan]

@@RadioPrepper Thanks anyways. Do you have a radio amateur website?

[@belabertalan]

@@RadioPrepper Actually I've just noticed, that the video says: "Calculated and built for 435 MHz". Not sure if you still know the repeater's RX/TX frequencies. Or the repeater name. The details might be online..

[@RadioPrepper]

radiopreppers.com

[@theodoreathome]

How does one make it for UHF television? My hope it be nice for tvdxing. I be looking to build it for my friend. Who livesnear Salem Oregon.

[@RadioPrepper]

You just need to know the frequency and cut the elements at the correct length. Use the calculator link in the description..

[@RandyUpchurch]

Thanks for the video. 73 Randy, N4NOM

[@barrykelly2722]

Lol. I dont need the whole stick. I'm going to get two 2:16 - 2:25. LMBO

[@mumi009]

can you provide specs for a 2 meter yagi uda like the one you show in this video for 70cm?

[@RadioPrepper]

See the video's description...

[@26CW128Jake]

Can you please use this for a 70cm France to UK QSO video like you did on 2m?

[@RadioPrepper]

I thought about it!

[@26CW128Jake]

Radio Prepper Maybe UHF CW may be needed (If FM and SSB fail) but I suppose portable 70cm CW rigs are far and few between except the 817 of course.

[@RadioPrepper]

Well, I plan on getting a transverter for my KX2...

[@26CW128Jake]

Radio Prepper Can't wait to see a video on the topic!

[@CroPrepper]

very cool... Could be used to pinpoint a rogue transmitter.. We have one guy that is annoying the guys on the repeater all the time, he has no ham license. Unfortunately the authorities aint doing anything about it.

[@RadioPrepper]

That would be quite easy...

[@samualwhittemore228]

You ARE the authority. Hunt him down for fun one weekend. Then ask if would quit irritating folks. Tell him that if he doesn't y'all will plaster his name and address all over the internet. And wouldn't be able to guarantee his safety.

[@OH8STN]

Outstanding video Gil! Liked, shared, added to my favs. Well done! Thanks for sharing 73 Julian oh8stn

[@RadioPrepper]

Thanks Julian!

[@mrdanielhodgson]

Radio Prepper great video. Can you tell me what ferrite beads you used for the choke?

[@RadioPrepper]

Hi, it was a "mystery" core, LOL. Maybe FT-140-61, but it's just a guess... Hence the importance of labeling...

[@aurtisanminer2827]

Are those ferrite beads that you epoxied over the coax?

[@RadioPrepper]

Hi, yes. Just heat-shrunk tubing, no epoxy.

[@aurtisanminer2827]

Oh, it looked like they were epoxied to the wood beam. Ill take another look. I’m still learning. Seeing these diy components really helps me understand how they work.

[@aurtisanminer2827]

Are the ground and driven elements connected or separated?

[@RadioPrepper]

Ah those, yes, sorry..

[@janlamprecht470]

@@RadioPrepper How many ferrite beads would you need for the 11 element yagi?

[@soswcwiczenia]

What radio do you use ?

[@RadioPrepper]

TYT MD390.

[@TeamOrdigamer]

Could I connect one of these to an old am/fm portable radio for airband?

[@RadioPrepper]

If you calculate and cut it for the required frequency, certainly.

[@TeamOrdigamer]

Radio Prepper Would I cut every single metal “pipe” for the proper length? Also, those old fm am radios don’t have f-connectors. How would it connect? Just metal to metal connection?

[@RadioPrepper]

See the calculator link in the description, everything you need is there. Also go to radiopreppers.com for help.

[@TeamOrdigamer]

Radio Prepper I don’t understand how to connect such and antenna to an old whip antenna

[@RadioPrepper]

You would use a coax cable between radio and antenna. On the radio side, the center of the coax connects to the whip. The outer shield of the coax to the minus of the battery or any ground connection. See the video for the antenna side.. Go to radiopreppers.com if you need help.

[@raykiii]

That antenna looks heavy. Do you plan to mount it on a mast or tripod?

[@RadioPrepper]

It is too heavy indeed. Not sure yet... My next one will have a lighter boom.

[@raykiii]

Thanks Gil. I feel like I have inside information. We have a store here that gives away metal tape measures. We make Yagis out of them and then do Fox Hunts to sharpen our skills.

[@RadioPrepper]

Never used tape measure, but to be able to fold the antenna into a shipping tube would be great...

[@raykiii]

You need to put something on the ends ( like electrical tape) because where you cut the tape measure gets sharp and you can cut yourself.

[@ElektroLUDIKITS]

Heat-shrink tubing could be a nice solution to that issue.

[@duaneshuster6366]

It works ..huh cool

[@philshnieder9188]

Where ya get your music? You have a list

[@RadioPrepper]

epidemicsound.com

[@philshnieder9188]

Radio Prepper ty. Sms Great videos too. Im only into fm 460mhz.. nothing else for now

[@RadioPrepper]

Thanks. Look into amateur radio :-)

[@vedicscientist2284]

I need yagi uda anntena for my satellite project whoes range must be 500 km and frequency of440 Hz so, can you PLEASE HELP ME with this Or suggest any other antenna of similar range Please help me as it's important for my UPCOMING project!

[@RadioPrepper]

For a satellite antenna a few elements should do fine. The question might be, does the satellite use the same band for uplink and downlink? You might need a dual band Yagi.

[@vedicscientist2284]

@@RadioPrepper first of all thank you for your quick reply! And secondly how much a dual yagi would cost me?

[@RadioPrepper]

I don't know... Check out Arrow Antennas, they make them. Good luck.

[@vedicscientist2284]

@@RadioPrepper thank you sir it was a great help now I have got a direction for my project

[@RadioPrepper]

Hi, I would suggest making one yourself, it's pretty easy. I made a single band Yagi, see the video in my list. Making a dual band Yagi shouldn't be much harder. I would search for designs and build videos or blogs...

[@samcgill]

NEVER apologise for metric.

[@RadioPrepper]

Right. It is a better system.

[@ElektroLUDIKITS]

Moi aussi faut que j'essaye la bidouille en chaussettes ! 😁

[@RadioPrepper]

LOL, oui...

[@WuLe993]

Nice one. 73 Almir E73AV

[@jeromegrzelak8236]

i kept the moxon and put elements i can go ssb and fm good ant build stain the wood fb om kg6mn

[@RadioPrepper]

I'll make another Moxon! I should epoxy the wood really...

[@andl9433]

Volume too low

[@RadioPrepper]

Noted thanks.

[@maximebeaudoin4013]

Pas besoin de t'excuser parce que tu utilise le systeme métric.😂

[@RadioPrepper]

It is simpler!

[@damnthiccassboye7138]

Des français ?

[@RadioPrepper]

Oui!

[@damnthiccassboye7138]

Ton antenne a l'air d'être correcte sauf que le reflecteur est plus petit que le dipole donc ça marche comme une antenne à deux directions alors que le but est d'en avoir qu'une. Essaye plus tard de construire une antenne avec un design plat et plusieurs dipoles en fourchette .

[@iainmeteorscan1555]

@@damnthiccassboye7138 Hi Yokoxs: Vous parlez de détritus! Le réflecteur est PLUS LONG que le dipôle (pas plus petit)! Et veuillez expliquer ce que vous entendez par «construire une antenne avec un design plat et plusieurs dipôles de fourche». Votre réponse sera intéressante, j'en suis sûr. You are talking rubbish! The reflector is LONGER than the dipole (not shorter)! And please explain what you mean by “build an antenna with a flat design and several fork dipoles”. Your reply will be interesting, I am sure.

[@damnthiccassboye7138]

Iain Meteorscan Hello, the antenna created by our dear inventor has a reflector smaller or equal to the length of the first dipole ... And the design I proposed was a multidirectional antenna with several dipoles as you can see on the internet...

[@RadioPrepper]

Le réflecteur est plus long.