VHF radios have a wide range of uses, but only if they have a good antenna. If you need help choosing the right VHF antenna length, here are some tips to make it simple.

Why Does Antenna Length Matter?

If you want to get the best signal to and from your VHF radio antenna, you need to make sure your antenna is properly equipped for that. This starts with making sure you’re buying a quality product that works with your radio and isn’t too difficult to install. However, you also need to make sure you’re buying the right length antenna. The length of your antenna determines how good it is at handling certain frequencies; according to experts, there’s a sweet spot that gives you the best signal. If you use an antenna that’s too long or too short, your signal might cut in and out at times.

Choosing the Right VHF Antenna Length

Considering how important getting the right VHF antenna length is, it’s no surprise that there’s a clear-cut guide for choosing the right size antenna. The wavelength of a signal should always be 1/4 the length of the antenna you’re using, as this gives you the very best efficiency. While you don’t have to pick an antenna whose length is exactly 4 times the wavelength of the signal, it’s a good idea to get as close as you possible can.

Aside from choosing the right antenna length, you also need to make sure you’re properly positioning and angling your VHF radio antenna. The quality of your VHF radio signal is determined by the length of the antenna you choose, the position in which you install it and how you adjust it to pick up a signal.

Finding the perfect VHF antenna length is easy if you know what to look for. If you’re still not comfortable making the call, have a professional help you pick one.


  1. Larry Longoria on November 25, 2020 at 6:10 pm

    I am presently using the Marathon 2600 antenna. I have a problem when my LED yard accent lights come on, I will loose my channel 8-1 thru 8-5, and transmitter tower is 67 miles away. I have installed 4 conductor twisted and shieded power cable, for the light transformer. I upgraded my RG6 coax, with RG11 quad shielded and relocated the antenna on the roof. Do you have any advice besides, choose the tv or the lights.

  2. H.G. Bushey on December 21, 2020 at 9:33 pm

    somebody tell Larry the LED lights interfere with VHF. USCG has an advisory. Also, RG6 & GR 11 are tv coax 75 Ohm. VHF requires 50 Ohm cable. No wonder it doesn’t work. Bad install.

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