Community hub
Recent from talks
Knowledge base stats:
Talk channels stats:
Members stats:
SINPO code
SINPO, an acronym for Signal, Interference, Noise, Propagation, and Overall, is a Signal Reporting Code used to describe the quality of broadcast and radiotelegraph transmissions. SINPFEMO, an acronym for Signal, Interference, Noise, Propagation, frequency of Fading, dEpth, Modulation, and Overall is used to describe the quality of radiotelephony transmissions. SINPFEMO code consists of the SINPO code plus the addition of three letters to describe additional features of radiotelephony transmissions. These codes are defined by Recommendation ITU-R Sm.1135, SINPO and SINPFEMO codes.
SINPO code is most frequently used 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 indicates nearly undetectable/severe/unusable and 5 indicates excellent/nil/extremely strong).
The code originated with the CCIR (a predecessor to the ITU-R) in 1951, and was widely used by BBC shortwave listeners to submit signal reports, with many going so far as to mail audio recordings to the BBC's offices.
SINPO and SINPFEMO are the official signal reporting codes for international civil aviation and ITU-R.
The use of the SINPO code can be subjective and may vary from person to person. Not all shortwave listeners are conversant with the SINPO code and prefer using plain language instead.
Each category is rated from 1 to 5, with 1 being unusable or severe and 5 being perfect or nil. A higher number always indicates a better result. Where signal and overall merit are graded in terms of strength (where 1 is the lowest and 5 is the highest), interference, noise and propagation are graded in the opposite way – their degrading effect is measured. For example, a 5 for signal strength represents a very strong signal, but a 5 for noise indicates very little noise.
Many raters misunderstand the code and will rate everything either 55555 or 11111 when in reality, both extremes are unusual in the extreme. 55555 essentially means perfect reception akin to a local station while that is occasionally possible, when talking about long-distance short-wave reception, it is rarely the case.
Another common mistake in rating is presenting an O rating higher than any previously rated element. By definition, a reading cannot present perfect reception if there is any noise or interference or fading present. In other words, it cannot be considered perfect local quality reception if any of those things are present.
Hub AI
SINPO code AI simulator
(@SINPO code_simulator)
SINPO code
SINPO, an acronym for Signal, Interference, Noise, Propagation, and Overall, is a Signal Reporting Code used to describe the quality of broadcast and radiotelegraph transmissions. SINPFEMO, an acronym for Signal, Interference, Noise, Propagation, frequency of Fading, dEpth, Modulation, and Overall is used to describe the quality of radiotelephony transmissions. SINPFEMO code consists of the SINPO code plus the addition of three letters to describe additional features of radiotelephony transmissions. These codes are defined by Recommendation ITU-R Sm.1135, SINPO and SINPFEMO codes.
SINPO code is most frequently used 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 indicates nearly undetectable/severe/unusable and 5 indicates excellent/nil/extremely strong).
The code originated with the CCIR (a predecessor to the ITU-R) in 1951, and was widely used by BBC shortwave listeners to submit signal reports, with many going so far as to mail audio recordings to the BBC's offices.
SINPO and SINPFEMO are the official signal reporting codes for international civil aviation and ITU-R.
The use of the SINPO code can be subjective and may vary from person to person. Not all shortwave listeners are conversant with the SINPO code and prefer using plain language instead.
Each category is rated from 1 to 5, with 1 being unusable or severe and 5 being perfect or nil. A higher number always indicates a better result. Where signal and overall merit are graded in terms of strength (where 1 is the lowest and 5 is the highest), interference, noise and propagation are graded in the opposite way – their degrading effect is measured. For example, a 5 for signal strength represents a very strong signal, but a 5 for noise indicates very little noise.
Many raters misunderstand the code and will rate everything either 55555 or 11111 when in reality, both extremes are unusual in the extreme. 55555 essentially means perfect reception akin to a local station while that is occasionally possible, when talking about long-distance short-wave reception, it is rarely the case.
Another common mistake in rating is presenting an O rating higher than any previously rated element. By definition, a reading cannot present perfect reception if there is any noise or interference or fading present. In other words, it cannot be considered perfect local quality reception if any of those things are present.