DK7ZB Dual Band Yagi Antenna Build and Testing

[@pcmultimedia1]

I built four of the 16 ele versions for 432mhz, these got me working off the moon after also building a solid state rf amp for 70cm,

[@dxexplorer]

Woaaaaaa. Now you give me ideas 😁. Is on my list since I was a kid and I was reading in books about EME. Maybe this coming summer I get to try this too. Good reminder, thank you. 73, YO6DXE

[@pcmultimedia1]

Check out the antennas by DG7YBN. These were the version I adjusted for 70cm EME working.

[@giovannifumatorre2140]

Greetings from Romania!!!73 from Deva.

[@dxexplorer]

Ohooo... greetings from Romania as well... today from Sibiu... on my way home in Brasov tomorrow. 73, YO6DXE.

[@multilecful]

Should have a good bandwidth Ciprian. Good build. Looks as strong as a Tonna. There is no real worry about mounting arrangements , you have many mounting options.

[@dxexplorer]

Thanks Nigel. Indeed it really has a nice bandwidth. Way better than I was expecting if I would compare the SWR sweep to the graphics that were available in the article. Really happy about the way it turned out. Solid... ohh yes ))) We chat more tomorrow. Time to put the nephew to sleep hahaha. 73

[@Istoryahetvvlogs]

Great antenna designed.. good job and 73 (DW6WPO)

[@dxexplorer]

A very well though design. I am really happy I found it. It works like a charm. Thank you and 73 DE YO6DXE.

[@alvarogaitan2529]

great job thanks Cipriano 73 from kb2uew

[@dxexplorer]

Thank you as well for watching my friend. 73, YO6DXE

[@wancable9702]

thank you bro, this video really inspired me.. i love to homebrew, but no luck with gamma match..

[@dxexplorer]

This one had no Gama match and the SWR is amazing for both bands if the dimensions are as in the instructions. www.qsl.net/dk7zb/Duoband/4+5_2m-70cm.htm

[@wancable9702]

I've just been working for this, using what ever left.. a little adjustment... its working well.. get fun with amsat.. thanks.

[@dxexplorer]

That is great to hear. I want to use the one in the video at home... and build one more ( a light version ) for portable work. Have fun with the sattelites 😀😀 73.

[@azarellediaz4892]

Did you ever get around to making the blog post for this antenna? You never provided the link to where you got your data to build it.

[@dxexplorer]

Almost yes. I have half of it written and I was working on the drawings and details. I will finish it once I get home as I will also make a new video as well since I am planning to build one more that weights less.

[@skr4021]

Expecting a simple 2m band receiver video from dx explorer as sooner😍

[@dxexplorer]

I haven't tried yet... but I think I've seen a few videos on KZbin and some simple schematics on Google and Pinterest. I may try one not a bad idea.

[@johnemmons9087]

Hi. Looked on your blog for dimensions but couldn’t find any. Thank you!

[@dxexplorer]

I didn't had the chance to write the article... but here is where I found it: www.qsl.net/dk7zb/Duoband/4+5_2m-70cm.htm 73, YO6DXE

[@johnemmons9087]

@@dxexplorer sure! I understand! God Bless and thank you!

[@dxexplorer]

@johnemmons9087 Always a pleasure. I hope to slowly catch up and write all the articles for the videos I posted so far.

[@joselobo8731]

Hi, please take me two doubts 😃: regarding the coil, please tell me the correct diameter and number of turns. I read 25mm and 5 turns. Is correct? The other doubt is the connection between elements and boom. Can the elements be in contact with boom (even with only one screw) or totally isolated. Thank you and really liked your video. Simple and efective. 73's

[@dxexplorer]

Hi Jose... yes the diameter of the coil is 25mm and 5 turns. And yes is ok if the elements are in contact with the boom. I was also confused on the same thing when I built it jajaja. 73

[@joselobo8731]

@@dxexplorer Thank you very much for your answer. Glad i was not the only with that doubt 😄. Seen dozens of photos and videos but there were the two versions. I am going to make my elements suport in 3d If you want i can send you the stl's for printing. 73's from CT1BRN.

[@dxexplorer]

@@joselobo8731 Thank you as well. I don't have a printer... but some plexiglass and a little patience got me some nice raisers haha. Just make sure that you keep the proper distance between the driven elements... the 1cm if I remember well. And it has to be 12mm in diameter. Is a must )). 73

[@joselobo8731]

@@dxexplorer ok, thanks. Bought the tubes today. Had to go another shop to buy the 12mm but it´s here. 73's

[@dxexplorer]

I have to buy the 12mm tubes as well as I messed up as explained in the video and want to replace them to the proper length. Good luck building yours. 73, YO6DXE.

[@sv2tcb]

Very stable antenna! Bravo! I have heard that the baofeng has some problems like poor reception when it is connected to external antenna. Is that true? 73's

[@dxexplorer]

Not at all. Maybe only if the antenna is not properly adjusted I guess. Mine works like a charm. No issues at all.

[@sv2tcb]

@@dxexplorer i am looking for a vhf uhf transceiver that's why i am asking. Thank you, keep up the good work!

[@dxexplorer]

Cheaper ones as the Baofeng I don't know. I didn't search much either honestly... I was happy with what I have. What I want is not pleasant for my bank account )))

[@sv2tcb]

@@dxexplorer i like the icom 2730 or the kenwood tm-v71 but they are way too expensive! I may start with a baofeng as most people do. Thanks for the reply. Looking forward to seeing the antenna outside!

[@dxexplorer]

I have on my list a vintage Yaesu... let's maybe I will make my self a Christmas present. For now I'm happy with the little I have... is better than nothing ))) The antenna video at work... let's see maybe this weekend I will have time to film. I was busy cutting the wood getting ready for winter. I just got in the house a little ago dead tired lol. 73 buddy.

[@sv2tcb]

Hi there! Are you working on the ssb transceiver? Many 73's!!

[@dxexplorer]

Hi Nikos. No my friend... I was crazy busy with work and working a little on my photography website / business. I have to make a loving as well ))) ... I come back to play with the toys in a little.

[@sv2tcb]

@@dxexplorer oh i understand, ok then, hope to see you with another project soon! 73's

[@dxexplorer]

Almost done running around so I hope soon I have the time. 73 my friend.

[@anilkumar-u7r1u]

making video plice (VU3 RFN)

[@dxexplorer]

In this video ? I can't remember I must watch it again.

[@tapaschakraborty3961]

Ok Nice de VU2TKC KOLKATA INDIA

[@dxexplorer]

Thank you. 73, YO6DXE.

[@radioclubcampina4644]

Felicitari pentru constructie! 73! YO9IGS

[@dxexplorer]

Multumesc mult 😀 73, YO6DXE.