Another 6m Yagi, Loop Fed this time...

[Crawdad]

I have the ingredients for another homebrew Yagi for 6 meters. This one will be a 5 element LFA and will go on the mast where my HexBeam has been.
The ingredients have almost all arrived:

 

[Crawdad]

Was planning on using Plexiglas for the element-to-boom brackets when it hit me that possibly they could be 3D printed?? After exchanging some DMs and some crude drawings with @danmcclain and @brandon7861, ended up with this:

@brandon7861 converted my crude drawings into whatever language a 3D printer needs. Big thanks Brandon!

@danmcclain then printed them and shipped them out. They fit over the boom perfectly. No force needed and no side to side slop. They'll keep the elements square to the boom and parallel. Big thanks Dan!

 

[Crawdad]

Bending the Driven Element 3/8" loop ends was easy with a cheap Chinazon tubing bender.

 

[danmcclain]

Was planning on using Plexiglas for the element-to-boom brackets when it hit me that possibly they could be 3D printed?? After exchanging some DMs and some crude drawings with @danmcclain and @brandon7861, ended up with this:
View attachment 75192View attachment 75193
@brandon7861 converted my crude drawings into whatever language a 3D printer needs. Big thanks Brandon!

@danmcclain then printed them and shipped them out. They fit over the boom perfectly. No force needed and no side to side slop. They'll keep the elements square to the boom and parallel. Big thanks Dan!

I'm glad they worked well for you... 3D Printers do have their uses sometimes... Dan

 

[Crawdad]

I'm glad they worked well for you... 3D Printers do have their uses sometimes... Dan

They do in my book Dan.......

 

[danmcclain]

They do in my book Dan.......

And thanks to the internet there are endless files to download and print... Dan

 

[Crawdad]

The dimensions of the antenna are in the public domain thanks to Justin G0KSC, the owner/designer of InnovAntennas @ https://g0ksc.co.uk/2013-yagis.html:


I plugged the dimensions into EZNEC:

I tweaked the dimensions slightly to get the resonant point where I'd like it to be:

The graph says resonance will be somewhere near 50.136, hopefully reality will be close to that.

Using EZNEC these dimensions can fairly easily be resized for other bands. Doing one for 27MHz would not be difficult. They show some really good bandwidth, covering 11m is very doable. They have a natural 50ohm feedpoint impedance, no matching devices needed.