# Kyoto2.org

Tricks and tips for everyone

# What is dBuV antenna?

## What is dBuV antenna?

dBuV is short for decibels-microvolt. This is a measure of Voltage: Electric Field Strength-per-unit-of-area and is usually taken at a fixed distance from the Transmitter.

## What is the difference between dBuV and dBuV M?

dBuV = decibels (voltage level) referenced to 1 microvolt across 50 ohms. dBuV/m = decibels (voltage level) referenced to 1 microvolt per meter; used for electric field intensity measurement.

How many microvolts is dBm?

Another convenient number to remember is that 1 microvolt equals -107 dBm (in a 50-ohm system). Let’s convert the 25 µV signal level at the antenna terminals to dBm by using the figures in Table 1. The ratio of the signal voltage to 1 microvolt is 25:1.

### How is DBUV M calculated?

dBµV/m = dBµV + AF Where AF is the antenna factor of the antenna being used, provided by the antenna manufacturer or a calibration that was performed within the last year.

### What is dB in signal strength?

dB (Decibel) The difference (or ratio) between two signal levels. Used to describe the effect of system devices on signal strength. For example, a cable has 6 dB signal loss or an amplifier has 15 dB of gain. This is useful since signal strengths vary logarithmically, not linearly.

What is antenna factor dBm?

Antenna Factor (or correction factor) is defined as the ratio of the incident Electromagnetic Field to the output voltage from the antenna and the output connector. Gain (dBi) The ratio of the signal received or transmitted by a given antenna as compared to an isotropic or dipole antenna.

#### How many microvolts are there?

One microvolt is equal to 1/1,000,000 of a volt, which is the potential difference that would move one ampere of current against one ohm of resistance. The microvolt is a multiple of the volt, which is the SI derived unit for voltage.

#### Which is better dB or dB?

It’s double the power! For every +3 dB gain translates to doubling the signal strength. For every +10 dB is 10 times the signal strength….Why Knowing How to Read dB Gain is Important.

Decibel Gain Power Increase
10 dB 10 times the power
12 dB 16 times the power
20 dB 100 times the power
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