Soldering Project KIT
When performing maintenance work on communication equipment, the noise bridge is used as a device for measuring and testing parameters of various antennas, communication lines, determining elements of resonant circuits and their characteristics, measuring antenna impedances, etc.
With this device, you can determine a number of necessary antenna parameters, such as:
* Impedance (wave resistance) and its nature (inductive or capacitive)
* Resonant frequency of single and multi-element antennas.
Using this device, you can determine the length of the feeder and select it if necessary with a multiplicity of half-wave or quarter-wave.
There are no difficulties in making it, and any Amateur radio operator can build it.
The scope of application of the device can be significantly expanded with a sufficiently close acquaintance with the principle of its operation.
A noise bridge, as its name implies, is a bridge-type device. The noise source generates the frequency spectrum of the signal in a wide range and covers the entire area of the Amateur short-wave section from 1 to 30 MHz. The noise bridge works in conjunction with a radio receiver that is used to detect the signal. The radio receiver determines the accuracy of the measurements. This can be a radio receiver or any transceiver with a digital scale is Suitable, in principle.