We meet at Mt Colah Community Centre in Pierre Close, Mt Colah 4th Tuesday (February to November) and the Hornsby-Manly Target Rifle Club, 66 Rosamond St. Hornsby on Second Tuesdays; both at 8:00 pm, unless advised otherwise. Occasional BBQs, etc.
Nets using VK2MA: Monday 8:00 pm, on VK2RNS; Wednesday 8:00 pm 3086.5 kHz LSB; Friday 9:00 am 7.106 MHz LSB.
| Formed | 26 May 1976 |
| Website | https://hadarc.org.au/ |
| BlueSky | https://bsky.app/profile/vk2ma.bsky.social |
| https://x.com/vk2ma |