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keetat
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can anyone describe wat is dB level.
can dB level be showed through receiver or field strength meter?
thx for helping
can dB level be showed through receiver or field strength meter?
thx for helping
mgb_phys said:dB is decibel is a measure of the relative power or amplitude between two signals.
It is an exponential unit
because signal strength covers such a wide range of values,
basically all you need to know is that every 3dB change is a doubling of power and every 6dB is a doubling of amplitude.
keetat said:can anyone describe what is dB level.
can dB level be showed through receiver or field strength meter?
chroot said:The decibel is a way of expressing ratio -- nothing more, nothing less.
A dB level, or decibel level, is a unit used to measure the intensity of sound or the strength of an electrical signal. It is important to measure because it allows us to quantify and compare the loudness or strength of different signals or sounds.
A receiver is a device used to pick up and decode radio signals, and it typically has a built-in dB level meter. A field strength meter, on the other hand, is a device specifically designed to measure the strength of radio frequency waves. While both devices can measure dB level, a field strength meter is more accurate for measuring signals from a distance.
To measure dB level using a receiver, you will need to tune the receiver to the desired frequency and then adjust the volume until the dB level meter reaches the desired level. It is important to make sure the receiver is set to the correct scale (usually dBu or dBm) and that any external amplifiers are turned off.
To measure dB level using a field strength meter, you will need to first calibrate the meter by adjusting the sensitivity and zero controls. Then, hold the meter at least 3 feet away from the source of the signal and record the reading. It is important to note that the distance between the meter and the signal source can affect the accuracy of the measurement.
Yes, there are limitations to both methods of measuring dB level. A receiver may not be as accurate for measuring signals from a distance, and a field strength meter may not be as accurate for measuring signals up close. Additionally, both methods may be affected by external factors such as interference or environmental conditions.