## How long is a 80 meter wire antenna?

Read more about . . . . Dipole Length Calculations.

Approximate Lengths for HF Ham Band Dipole Antennas | ||
---|---|---|

Band (MHz) | Length (Feet) | Length (metres) |

3.5 (80 metres) | 137 | 42.2 |

7.0 MHz (40 metres) | 68.5 | 21.1 |

10.1 (30 metres) | 47.5 | 14.7 |

### What is the gain of a 1/4 wave vertical antenna?

With a normal sloped roof shape and mid-car size ground, the 1/4 wave has -6.59dBi at 2 degrees TO. Maximum gain is 3.05dBi.

#### How long do radials need to be for a vertical antenna?

Butternut recommends a minimum of 30-60 radials at 65 feet each. Hy-Gain suggests numbers based on a chart similar to Table 1 below. It’s obvious there isn’t a consensus among vertical antenna makers. If you need a number to start, twenty 32-foot radials will give you a workable system with most vertical antennas.

**Is a half-wave antenna better than a quarter wave?**

A half-wave antenna is a good choice when your entire device is much smaller than a quarter-wavelength, or when you are building an antenna that is physically separated from the transmitter.

**What is the best antenna length?**

The most effective antenna has the same length as the length of the wave it is used for. For practical purposes, half or a quarter of that length will suffice. Most LoRa antennas are a 1/4 wavelength.

## What is the size of the 80 meter band antenna?

The large diameter yields broadbanded coverage of the 80 Meter Band. It’s an 1/8 wave vertical on 160 meters also. This antenna is 58 ft tall and is mounted on a hinged base.

### How tall is a 1/4 wave antenna?

In the summer of 2010, I decided to construct a 1/4 wave 80 meter vertical using 3″ OD Aluminum Tubing. The large diameter yields broadbanded coverage of the 80 Meter Band. It’s an 1/8 wave vertical on 160 meters also. This antenna is 58 ft tall and is mounted on a hinged base.

#### What is the best HF vertical antenna for business?

Try Business Prime free. Hy-Gain AV-18VS – 10/12/15/17/20/30/40/80 Meters HF Vertical Antenna. The Hy-Gain Model 18V-S is a trapless, vertical antenna which is manually tuned to any band, 10 thru 80 meters, by a simple adjustment of the feed point on the base inductor.

**What is a short vertical antenna for 80 MTR?**

This page is a collection of short vertical antennas that I built over the years, for the 80 mtr band. With “short” I mean between 3 and 10% of λ. That is a lot shorter than a standard 1/4 λ vertical. Anything less than 75% of full-size is actually a real compromise.