Homebrew UHF YAGI tested against dipole
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- Опубліковано 5 жов 2024
- Testing my "Home Brew" antenna with Geoff M0IDL/P. We used a Dipole for a reference antenna, it really helped to see the potential of the newly built Yagi. The antenna is 10 element and officially it has 12db of forward gain.. So did Geoff like it???..
I would ask him but he's to busy building one right now "literally"!. Some of my equipment..
FT817 radio amzn.to/2PIvcGY
17m whip antenna amzn.to/2Q6qVw5
20m whip antenna amzn.to/2zjdcsm
10m Antenna pole amzn.to/2TpkFyp
Antenna Analyser amzn.to/2Q7FKP4
Thanks to Geoff for the help testing this antenna project built from Scrap!
73's
2e0vov
73 good antenna
Hi. Thanks for the video. Just wondering what the feed point is on the yagi and how it is matched. I am interested in building my own. Many thanks. Jason VK2XJM. 73
vk2xjm hi Jason. its a standard driven element like a dipole nothing fancy.. I used a tuned length of tube over the feeder to act as a choke but that's just good practice.. Search google for various designs, I chose this one purely as I had enough scrap materials to make it for free.
I am thinking to make a log periodic wide band antenna but then add passive directive elements in front of it for the highest frequency band. It appears to me that the larger elements for the lower bands have the smaller elements in front of them which might act somewhat as directors however the smallest elements have no further directors. I can't find any info. Any ideas?
izzzzzz6 I have no idea as i havent studied the Log antenna design principles 73
Hi. How is the distance between the active dipole element on the Yagi and the 1st director calculated? It looks quite close to the 1st passive element compared to the distance between the other directors.
Hello! What distance was between your anntennas in the test?
distance about 7 or 8 miles
+mk1tina thanks, interesting!
His car antenna was awful but it helped complete the test