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| Both sides previous revision Previous revision Next revision | Previous revision Next revisionBoth sides next revision | ||
| projects:freqbuddy [2024/01/21 18:28] – How it works simpel | projects:freqbuddy [2024/01/21 18:32] – [Calculation of the freedom from intermodulation] typo simpel | ||
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| This tool calculates the best interference-free radio frequencies (UHF) within a TV channel (8 MHz grid). Only one TV channel is analyzed in isolation. Additional frequencies from other TV channels are **not** checked for compatibility. | This tool calculates the best interference-free radio frequencies (UHF) within a TV channel (8 MHz grid). Only one TV channel is analyzed in isolation. Additional frequencies from other TV channels are **not** checked for compatibility. | ||
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| ==== Important note ==== | ==== Important note ==== | ||
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| * min. 200 kHz spacing 2TX-IM(3) - 3rd order intermodulation of 2 transmitters | * min. 200 kHz spacing 2TX-IM(3) - 3rd order intermodulation of 2 transmitters | ||
| * min. 100 kHz spacing 3TX-IM(3) - 3rd order intermodulation of 3 transmitters | * min. 100 kHz spacing 3TX-IM(3) - 3rd order intermodulation of 3 transmitters | ||
| - | * Intermodulation strength: **F1**: 54 %, **F2**: 65 %, **F3**: 49 %, **F4**: 67 %, **F5**: 81 %, **F6**: 63 %, **F7**: 82 %, **F8**: 66 % (The higher the percentage, the better the signal.) | + | * Intermodulation strength: **F1**: 54 %, **F2**: 65 %, **F3**: 49 %, **F4**: 67 %, **F5**: 81 %, **F6**: 63 %, **F7**: 82 %, **F8**: 66 % (The higher the percentage, the better the signal.) |
| The minimum requirements for intermodulation resistance are met in all cases. These values apply to the increasing frequency intervals. The order must be reversed for the descending frequency intervals. | The minimum requirements for intermodulation resistance are met in all cases. These values apply to the increasing frequency intervals. The order must be reversed for the descending frequency intervals. | ||