20M LOADED DIPOLE - HALF A YAGI?

[@Steve-GM0HUU]

👍 Thanks for posting. Years ago, I made a 20m coil loaded dipole. I used it vertically end-fed. I used toroids for the coils and sealed them inside old plastic 35mm film canisters. It certainly worked OK on a 5m fishing pole. However, I have rarely used it as I found antennas like a 1/4 vertical with raised radials took up the same space but had more gain and lower radiation. Using the loaded dipole idea like this to make a mini-beam is perhaps more interesting. Already wondering 🤔 how to make a lightweight version that could be carried for portable operation. Looking forward to see how you get on with this.

[@BrokenSignal]

Great project. Will be interesting to see how the SWR changes as the antenna is mounted higher in the air and then when transformed into a yagi.

[@AB1Vampire]

Thanks for posting great video. I just finished a 20M aluminum full size 20M dipole. It's 5-6' higher than my 40M EFHW and there's almost no difference btwn the 2 except directionality. Both are 70' free-space above ground.

[@TechMindsOfficial]

This is the problem I have, with almost any antenna I test in my small garden, none seem to beat my EFHW which is in an Inverted L config.

[@harleyreaper5146]

Would love to hear how this yagi turned out. Especially after a years worth of use

[@markg6jvy135]

Nice project Mat 👍👏👏

[@dxexplorer]

I only have a (tr)uSDX to play with on HF.. so I thought the best way to improve the signal is by building a better antenna. Comparing to my EFHW this would be a lot better. Great you shared this as I will try to build the Yagi as well. The fishing pole idea and the loading coils seems great. I was just thinking that I must find long aluminum tubing to do this. 73 DE YO6DXE.

[@datatransfer277]

Great Video, Wanted to check if you ended up trying the Yagi. I am quite keen to try this and wanted to check how you went.

[@TechMindsOfficial]

I haven’t yet but I will definitely be recording it when I do, hopefully within the next couple of months.

[@jiml40]

Well ??? You going to build it out not??

[@W0KNI]

Thanks for posting Matt. What SDR + radio setup are you running? Are you using a TX cut out box during TX? L+S

[@TechMindsOfficial]

I’m using the Hermes Lite 2, it’s a fully SDR radio controlled by SDR Console. Check my video dedicated on the Hermes Lite 2, it’s a great radio!

[@LBJ-bj]

hi Matthew what type of your wire ，AWG size？and how many turns on pvc tube? thank you

[@ifell3]

Nice build!!!

[@daviddavidson1372]

Walmart has these poles under the black widow name.same poles.they also have a 13ft pole also black widow.

[@markwhittington8198]

Hi Matt - great video! Did you get chance to build the 2ele Yagi or is this still in the pipeline? Thanks for the great contentI really enjoy your videos. 73s Mark (G1VGK)

[@TechMindsOfficial]

He Mark! Thanks for your kind words, I’m glad you enjoy them :) I havn’t built it yet, but I plan to later this this as I will have more space to play antennas! I’ll definitely be making a video on it. Cheers!

[@gingerunit]

Wow wish I could build that antenna. I imagine it would be ideal for 20m SSTV, which is my interest. Thanks so much for the video. 73 CHRIS G7OGX

[@zrdcorp]

Great Video. Have you tried measuring the inductance with the VNA? The L/C meter you used may produce a different measured value since it uses a very Low (MF) frequency (500 KHz) to measure the Inductance.

[@rickblythe4864]

You said that you going make this dipole into a yagi. You further said that you would make a video about it. I have looked every where for it. I could not find it. Help!

[@TechMindsOfficial]

Yeh, I got busy and didn't finish the project. However, it is most definitely on my TO DO list :-) Thanks

[@msn164]

First

[@erikakaszoni7362]

Hi! There are 32 moves in the drawing In the video there are more on both reels 🤔. What is the reason?? Thx! 🙃 88 & DX! 😘 Erika ( HA8GF wife )

[@TechMindsOfficial]

Inductance, mostly because wire thickness may not have been the same as the original designer used, so more or less windings would be needed to get the same inductance. Cheers