SINPO
The SINPO code is a way of quantifying reception conditions in a five-digit code, especially for use in reception reports to broadcasters. The code covers Signal strength, Interference (from other stations), Noise (from atmospheric conditions), Propagation disturbance, and Overall. The code is as follows:
3 moderate 3 fair 2 poor 2 severe 2 severe 2 severe 2 poor 1 barely aud. 1 extreme 1 extreme 1 extreme 1 unusable
Why Do radio amateurs need to know this? 5mhz one of the new frequencies available to full licencee's with a NoV (Notice of Variation)
| (S)ignal | (I)nterference | (N)oise | (P)ropagation | (O)verall |
|---|---|---|---|---|
| 5 excellent | 5 none | 5 none | 5 none | 5 excellent |
| 4 good | 4 slight | 4 slight | 4 slight | 4 good |
| 3 fair | 3 moderate | 3 moderate | 3 moderate | 3 fair |
| 2 poor | 2 severe | 2 severe | 2 severe | 2 poor |
| 1 barely aud. | 1 extreme | 1 extreme | 1 extreme | 1 unusable |