Finished UNUN for EFHW End Fed Half Wave antenna I am building

avatar

Yesterday I finished building the UNUN (unbalanced transformer) for the EFHW End Fed Half Wave Ham Radio antenna the I am going to put up in my back yard. This antenna will allow me to get on the air in the HF Ham Radio bands that I am licensed to transmit on here in Canada.

I forgot to take a picture of the hand wound torid that I built under the awesome guidance of Dave VE3GSO who guides us noobs at the LARC (London Amateur Radio Club) kit building sessions. Yes we do follow COVID-19 guidelines.

Here is a picture of the inside of the enclosure:
20200930_145324.jpg

Here you can see the hand wound torid connected to the input coax connector and a groung lug.

Here is a picture of the closed up box:
20200930_145432.jpg

In this photograph you are able to see the bolt out the back of the box which connects to the antenna pole.

Now I just have to get the pole and antenna wire mounted before winter gets here.

technology hamradio diy
0
0
0.000
3 comments
avatar

Congratulations @mytechtrail! You received a personal badge!

You powered-up at least 100 HP on Hive Power Up Day! This entitles you to a level 3 badge
Participate in the next Power Up Day and try to power-up more HIVE to get a bigger Power-Bee.
May the Hive Power be with you!

You can view your badges on your board and compare yourself to others in the Ranking

Do not miss the last post from @hivebuzz:

Hive Power Up Day - Introducing the Power Up Helper!
0
0
0.000
Reply
avatar

Nice job wiring the toroid!
Do you have a schematic of the wiring?
Looks like you've used Stainless Steel bolts as well!

0
0
0.000
Reply
avatar

Thanks, my elmer drew it up. I can get it to you if you want. Yes, they are stainless steel so they won't rust.

Got the antenna up, but need to get it tuned (cut to length). My elmer has a nano VNA we can use.

0
0
0.000
Reply