Kalendar aktivnosti HRS-a za 2018. godinu
| Nadnevak | UTC | Natjecanje | Opseg | Napomena |
| Siječanj | ||||
| 21. | 0700-1200 | 9A Activity Contest - 1. period | 144, 432, 1 296 MHz | UKV |
| Veljača | ||||
| 18. | 0700-1200 | 9A Activity Contest - 2. period | 144, 432, 1 296 MHz | UKV |
| 18. | 0700-1200 | Brod | 144 MHz | UKV |
| Ožujak | ||||
| 3. - 4. | 1400-1400 | Hrvatski zimski UKV kup | 144 i viši | UKV |
| 18. | 0700-1200 | 9A Activity Contest - 3. period | 144, 432, 1 296 MHz | UKV |
| Travanj | ||||
| 15. | 0700-1200 | 9A Activity Contest - 4. period | 144, 432, 1 296 MHz | UKV |
| 15. | 0700-1200 | Podravina | 144 MHz | UKV |
| Svibanj | ||||
| 5. - 6. | 1400-1400 | Hrvatski proljetni UKV kup | 144 i viši | UKV |
| 5. - 6. | 1400-1400 | Zagreb FM contest | 144 | UKV |
| 20. | 0700-1200 | 9A Activity Contest - 5. period | 144, 432, 1 296 MHz | UKV |
| 20. | 0700-1200 | Pokuplje | 144, 432, 1 296 MHz | UKV |
| Lipanj | ||||
| 2. - 3. | 1400-1400 | 9A Microwave contest | 1,3 GHz i viši | UKV |
| 2. - 3. | 1400-1400 | Zagreb FM contest | 144 | UKV |
| 16. | 0800-1300 | 9A VHF QRP contest | 144 MHz | UKV |
| 16. -17. | 1400-1400 | IARU I. region 6 m Contest | 50 MHz | UKV |
| 17. | 0700-1200 | 9A Activity Contest - 6. period | 144, 432, 1 296 MHz | UKV |
| 17. | 0700-1200 | Antunovo | 144 MHz | UKV |
| 17. | 0700-1500 | Alpe Adria UHF/SHF Contest | 432 MHz i viši | UKV |
| Srpanj | ||||
| 7. - 8. | 1400-1400 | Hrvatski ljetni UKV kup | 144 i viši | UKV |
| 7. - 8. | 1400-1400 | Croatian 50/70 MHz contest | 50 i 70 MHz | UKV |
| 7. - 8. | 1400-1400 | Zagreb FM contest | 144 | UKV |
| 15. | 0700-1200 | 9A Activity Contest - 7. period | 144, 432, 1 296 MHz | UKV |
| 15. | 0700-1200 | Otok Ivanić | 144 MHz | UKV |
| Kolovoz | ||||
| 5. | 0700-1500 | Alpe Adria VHF Contest | 144 MHz | UKV |
| 19. | 0700-1200 | 9A Activity Contest - 8. period | 144, 432, 1 296 MHz | UKV |
| 19. | 0700-1200 | Bilogora | 144 MHz | UKV |
| Rujan | ||||
| 1. -2. | 1400-1400 | IARU I. region VHF Contest | 144 MHz | UKV |
| 1. - 2. | 1400-1400 | Zagreb FM contest | 144 | UKV |
| 8. - 9. | 1800-1200 | IARU I. Region ATV Contest | 432 MHz i viši | UKV |
| 16. | 0700-1200 | 9A Activity Contest - 9. period | 144, 432, 1 296 MHz | UKV |
| 16. | 0700-1200 | Kutinska Dunja | 144 MHz | UKV |
| Listopad | ||||
| 6. - 7. | 1400-1400 | IARU I. region UHF/SHF Contest | 432 i viši | UKV |
| 21. | 0700-1200 | 9A Activity Contest - 10. period | 144, 432, 1 296 MHz | UKV |
| 21. | 0700-1200 | Lipik | 144 MHz | UKV |
| Studeni | ||||
| 3. - 4. | 1400-1400 | 9A CW VHF Contest | 144 MHz | UKV |
| 3. - 4. | 1400-1400 | Marconi Memorial VHF CW Contest | 144 MHz | UKV |
| 18. | 0700-1200 | 9A Activity Contest - 11. period | 144, 432, 1 296 MHz | UKV |
| Prosinac | ||||