Hornsby & Districts Amateur Radio Club, Inc., a #ham club in northern Sydney. We run VK2RNS repeater on 147.250 FM in Hornsby & VK2RHT DMR in Chatswood. Meets @ Mt Colah Community Centre, Mt Colah & Hornsby Rifle Range; on Terramerragal land. hadarc.org.auhttps://bsky.app/profile/vk2ma.bsky.socialhttps://bsky.app/profile/vk2ma.bsky.social/post/3mkhuswdvqk2aSome members may head west for a daytrip, now we have decent PT out where your publicity officer is: https://www.transport.nsw.gov.au/system/files/media/documents/2026/gwh-vic-pass-closure-bus-and-rail-timetable-20-March-2026-1.pdf27 Apr 2026 10:36 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3mkhuswdvqk2ahttps://bsky.app/profile/vk2ma.bsky.social/post/3mkayhtuftc2tInternational Marconi Day is today, April 25 - 0:00 to 23:59 UTC, or 10 am Saturday to 10 am Sunday Eastern VK time. Listen for VK2IMD in HF, and other stations across all bands. IMD.24 Apr 2026 16:53 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3mkayhtuftc2thttps://bsky.app/profile/vk2ma.bsky.social/post/3mee7qwaicc26Another series of antenna ideas: Patents! https://www.aktuellum.com/notable-patents-on-antenna-design/ #HamRadio #HF #Zepp08 Feb 2026 15:10 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3mee7qwaicc26https://bsky.app/profile/vk2ma.bsky.social/post/3mee7alpuq22613 February (Friday) is UNESCO's World Radio Day https://www.unesco.org/en/days/world-radio HADARC is holding an informal dinner at Magpies club in Alexandria Parade, Waitara, NSW, opposite Waitara Station a few days early, this TUESDAY (10th) at 6:00 pm. #HamRadio #Ham #AmaterRadio #Radio #VK2MA08 Feb 2026 15:01 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3mee7alpuq226https://bsky.app/profile/vk2ma.bsky.social/post/3meawygcb7k2oAn interesting omnidirectional antenna for 2 metres SSB, CW, and "weak signal" modes: https://dcarc.club/presentations/2022-05-07%202m%20Triangle%20SSB%20antenna%20project%20W4RQ.pdf07 Feb 2026 07:56 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3meawygcb7k2ohttps://bsky.app/profile/vk2ma.bsky.social/post/3mc5iuvtzts2aHADARC is running a BBQ at the Hornsby Manly Riffle Club at 66 Rosamond St, Hornsby this Tuesday (13 Jan) at 18:00. Please indicate attendance using the President option at: https://www.hadarc.org.au/cgi-bin/hadarc/webmail.cgi Bring a few dollars (coins / notes) for costs, and to buy drinks from the host club.11 Jan 2026 12:15 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3mc5iuvtzts2ahttps://bsky.app/profile/vk2ma.bsky.social/post/3mbyczystns2iStill on post-Christmas leave? Retired and wanting a summer / big wet or winter project? www.hadarc.org.au/QUA-excerpts/ https://www.hadarc.org.au/QUA-excerpts/09 Jan 2026 10:47 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3mbyczystns2ihttps://bsky.app/profile/vk2ma.bsky.social/post/3mbeerh76pk2xHelp US hams operate from home using effective antennas: send-a-letter.org/hoa/ https://send-a-letter.org/hoa/01 Jan 2026 12:25 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3mbeerh76pk2xhttps://bsky.app/profile/vk2ma.bsky.social/post/3mbeejf7qv22x2m or 70 cm antenna: https://vu3dxr.in/high-gain-collinear-antenna-for-145-mhz-and-433-mhz-bands/01 Jan 2026 12:20 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3mbeejf7qv22xhttps://bsky.app/profile/vk2ma.bsky.social/post/3mbeec4l6d22xHADARC's next in-person event is a BBQ on the evening of 13 January at the Hornsby Manly Rifle Club rooms in Rosamond St, Hornsby. #NSW #HamRadio01 Jan 2026 12:16 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3mbeec4l6d22xhttps://bsky.app/profile/vk2ma.bsky.social/post/3mbed7hcbwk2xHey @bsky.app you are ***NOT*** on the list of companies which the (un)Australian government requires age verification. And we are a radio club, not a person.01 Jan 2026 11:57 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3mbed7hcbwk2xhttps://bsky.app/profile/vk2ma.bsky.social/post/3lwocugvu3k2aOur friends at the BLUE MOUNTAINS AMATEUR RADIO CLUB, INC are holding its annual Trash and Treasure Day (Winter Hamfest) at their Clubrooms: The Old Scout Hall, 4 Moore Street, GLENBROOK. Gates open at 0830am. A sausage sizzle will be available for lunch See: bmarc.org https://bmarc.org/18 Aug 2025 11:40 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3lwocugvu3k2ahttps://bsky.app/profile/vk2ma.bsky.social/post/3lv6pj5irz22lAldi in VK has an autoranging CAT III 600V multimeter for $17.99, and a VDE screwdriver set for $12.99, from Saturday 2nd. And sewing stuff from today (Wed 30th), including cutting mats and tools.30 Jul 2025 13:19 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3lv6pj5irz22lhttps://bsky.app/profile/vk2ma.bsky.social/post/3lui4qcnbg22cHADARC's next meeting is Tuesday night 22/7 at 8:00 pm at the Mt Colah Community Centre in Pierre Close, and opposite Mt Colah Station. Talks are by Walter VK2XWB on repairing & upgrading power supplies used in Ham Radio and how they work; while Rod VK2DAY is showing a homebrew PSU from 40+ yrs ago.21 Jul 2025 13:44 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3lui4qcnbg22chttps://bsky.app/profile/vk2ma.bsky.social/post/3ltenqo4hnk2zAssuming this URL posts in a sensible manner, you can paste it into your calendar app to view club events: https://calendar.google.com/calendar/u/0?cid=bnUwbjBvcmdndTZuM2Q3MWl1czNudnJhdDBAZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ Clicking it in a browser signed into your google account *may* also allow you to add it.07 Jul 2025 11:13 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3ltenqo4hnk2zhttps://bsky.app/profile/vk2ma.bsky.social/post/3lrzu2qa76s2gThe next HADARC meeting is this Tuesday (24 June) at the Mt Colah Community Centre at 8:00 pm. Presentations will be: Chris VK2YMW on his portable antenna and mast combo. Rob VK2DIO will share the latest on Reticulum / Meshtastic, a messaging and data transfer system based on LoRa. #Sydney #HamRadio20 Jun 2025 10:41 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3lrzu2qa76s2ghttps://bsky.app/profile/vk2ma.bsky.social/post/3lrztqfjth22gWe are on Mastodon / Fediverse too now, via one of the Ham radio servers: mastodon.radio/@vk2ma https://mastodon.radio/@vk2ma20 Jun 2025 10:35 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3lrztqfjth22ghttps://bsky.app/profile/vk2ma.bsky.social/post/3lmbfkqor622gThe Club's next meeting is tonight (Tuesday) at 8:00pm at the Hornsby Many Rifle Club rooms at Hornsby Rifle Range, in Rosamond Street. It is the informal gathering. #HamRadio #Hornsby #Radio #Hobbies #HADARC08 Apr 2025 02:12 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3lmbfkqor622ghttps://bsky.app/profile/vk2ma.bsky.social/post/3ll6uowliys23Meeting tonight at Mt Colah Co0mmunity Centre, 8pm. The talk is by David VK2CZ, on hard core contesting. #HamRadio25 Mar 2025 08:39 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3ll6uowliys23https://bsky.app/profile/vk2ma.bsky.social/post/3ll4jygpyb223The UTC day of 26 April 2025, being the Saturday closest to the 25th is International Marconi Day. Listen for VK2IMD on a range of bands, operating from Wahroonga (northern Sydney), NSW. For locals it is 10:00 am eastern time. The station list for 2025 is: https://gx4crc.com/imd/official-imd-stations-2025/ #hamradio #imd24 Mar 2025 10:22 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3ll4jygpyb223https://bsky.app/profile/vk2ma.bsky.social/post/3ljhzvt5qfk2bAmazon "Metal Film" resistors? No, they are carbon film, as the resistance falls instead of rising when heated! https://www.youtube.com/watch?v=PMAUh3a6DLI03 Mar 2025 13:16 +0000at://did:plc:6z2ro33kxstfk2unoxp3aqhe/app.bsky.feed.post/3ljhzvt5qfk2b