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tuning antenna

May 20th 2016, 20:35

0001529375H80

Joined: May 12th 2012, 23:56
Total Topics: 0
Total Posts: 0
I built a inverted v antenna for 40/80 meters. The swr on the 40 meter band was great, 1.2 across the band.Adding the 80 meter coils causes the 40 meter section to go way out of the ball park. The 80 meter section swr goes to infinity & cannot tune it out. Any suggestions to fix it. Thank you. KC6BIU
May 21st 2016, 09:26

W1VT

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0
https://rsars.files.wordpress.com/2013/01/w3dzz-antenna-iss-1-31.pdf
Typically, you add traps rather than coils to prevent the 80 meter coils from also loading down the antenna when you want to use it on 40 meters.

Zack Lau W1VT
ARRL Senior Lab Engineer

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