SINPO

SINPO is a code used to describe the quality of radio transmissions, especially in reception reports written by shortwave listeners. Each letter of the code stands for a specific factor of the signal, and each item is graded on a 1 to 5 scale (where 1 stands for very bad and 5 for very good).The use of the SINPO code is subjective and varies from person to person. Not all shortwave listeners are conversant with the SINPO code and prefer using plain language instead.
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Sinpo is a port city on the coast of the Sea of Japan (East Sea of Korea) in central South Hamgyong province, North Korea. It is home to approximately 158,000 people. The average templature is -4.1 ℃ in January and 22.6 ℃ in August. The average annual rainfall is 688 millimeters. It is an important base for fishing, and particularly for aquaculture. There are aquacultural cooperatives and a central aquaculture office.
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