SINPO code

The SINPO system used in the estimation of the received short-wave radio transmissions to radio communications. Here, the signal strength (S: Signal Strength ), the disturbance impression (I: Interference ), the noise component (N: Noise), the intensity of propagation conditions (P: Propagation ) and the overall impression (O: Overall Merit ) of the signal with digits assessed.

Details

With S the signal strength is called. An S- value of 5 means local stations quality, as only rarely occurs in shortwave broadcasts. The S value of 1 indicates that just a radio signal can still be seen, would be without understanding that speech or music. The value I denotes the interference of a radio signal, which can occur by adjacent stations or transmissions from other radio services. As noise N are disturbances of natural origin, such as lightning, static summarized. With P propagation conditions are assessed. Here is fading phenomena, which manifest themselves mostly by variations in signal strength. The overall O is a summary assessment of the short- wave signal.

Occasionally one meets on the SINFO Code, in which the F stands for fading, so fading phenomena.

Extensions

As an extension to SINPO system, there is the SINPFEMO system. Here are additional influences of fading ( Q: fading), modulation quality ( E) and modulation depth (M: Modulation ) assessed.

Similar systems

For the assessment of emissions in the amateur radio service is often only the lower level of the RST system is used. For the assessment of radio transmissions ( Phonie ) the RS system is along the same lines used in which the assessment of sound quality does not matter. For the assessment of digitally coded signals ( radio telex, data transmission ), the RSQ system is used.