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Old 24-Apr-2020, 2:17 AM   #28
Tim
Senior Member
 
Join Date: Nov 2014
Location: Acworth, GA
Posts: 291
Quote:
Originally Posted by bobsgarage View Post
Thanks Tim, I'll look at that dipole calculator.



How do I specify if I'm building an antenna for all hi VHF channels RF 7 - RF 13 ?


Again thanks for the info you just made it interesting for me!
Unfortunately you can't with that particular calculator. For channels 7 to 13 you'll need to cover a range from 174 to 216 MHz which is probably not possible with a Yagi (that I am aware of).

You might want to check out a log periodic antenna. Enter your min and max frequency and maximum boomlength into this calculator (https://www.changpuak.ch/electronics/lpda.php) and see what you come up with. You could probably get about 10 or 11 dB of gain on a 12 ft boom with about 15 elements.
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