#cqww — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #cqww, aggregated by home.social.
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#hamchallenge week 3: Understand how your antenna works. 🧵
Let's check out the lowband vertical antenna I built before #CQWW in November. It is 16.5m long, built with an 18m Spiderbeam mast minus the top element. About 18m of wire are coiled up on it (for stability), and it is tuned at the feed point with a CG3000 automatic tuner. There are 12 ground radials with an average length of 10m below it. When I built it and laid out the radials, I noticed that the feed point impedance stayed at about 37 Ohm at the resonant frequency of ~ 4.1 MHz any more after 12 radials, so I left it like that. HC03 @hamchallenge #hamradio #antennas
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#hamchallenge week 3: Understand how your antenna works. 🧵
Let's check out the lowband vertical antenna I built before #CQWW in November. It is 16.5m long, built with an 18m Spiderbeam mast minus the top element. About 18m of wire are coiled up on it (for stability), and it is tuned at the feed point with a CG3000 automatic tuner. There are 12 ground radials with an average length of 10m below it. When I built it and laid out the radials, I noticed that the feed point impedance stayed at about 37 Ohm at the resonant frequency of ~ 4.1 MHz any more after 12 radials, so I left it like that. HC03 @hamchallenge
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In the middle of the #CQWW contest, my SO2R Mini+ started to generate illegible Morse code. I didn't have the nerve to debug this during the contest, so I continued with a changed setup. Today I finally found some time to analyze the problem. Turns out something went wrong with the K3NG keyer firmware; the dots were normal but the dashes were almost infinitely short (1st picture). Re-flashing the Arduino and even (or so I though) deleting the EEPROM didn't fix this. However, after I resetted the keyer by holding both dot and dash paddle held down, everything was back to normal. This confuses me; I wish I could have understood what setting was corrupted, but at least it works again and I know how to fix it next time. This also sort of fulfills the @hamchallenge challenge for week 45 🙂
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We now have more than 2500 registered users on the #DXCluster (DXspider) node DA0BCC-7 of the Bavarian Contest Club, (telnet://dx.da0bcc.de:7300) which I am the SysOp for. Typical daily connected user count is in the range of 70 (early morning UTC) to 250 (evenings), but I am sure next weekend during #CQWW we will see mor than that. Let's hope the cluster network and especially RBN sustains the load of the biggest #morsecode contest of the year! #hamradio
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We now have more than 2500 registered users on the #DXCluster (DXspider) node DA0BCC-7 of the Bavarian Contest Club, (telnet://dx.da0bcc.de:7300) which I am the SysOp for. Typical daily connected user count is in the range of 70 (early morning UTC) to 250 (evenings), but I am sure next weekend during #CQWW we will see mor than that. Let's hope the cluster network and especially RBN sustains the load of the biggest #morsecode contest of the year! #hamradio
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We now have more than 2500 registered users on the #DXCluster (DXspider) node DA0BCC-7 of the Bavarian Contest Club, (telnet://dx.da0bcc.de:7300) which I am the SysOp for. Typical daily connected user count is in the range of 70 (early morning UTC) to 250 (evenings), but I am sure next weekend during #CQWW we will see mor than that. Let's hope the cluster network and especially RBN sustains the load of the biggest #morsecode contest of the year! #hamradio
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We now have more than 2500 registered users on the #DXCluster (DXspider) node DA0BCC-7 of the Bavarian Contest Club, (telnet://dx.da0bcc.de:7300) which I am the SysOp for. Typical daily connected user count is in the range of 70 (early morning UTC) to 250 (evenings), but I am sure next weekend during #CQWW we will see mor than that. Let's hope the cluster network and especially RBN sustains the load of the biggest #morsecode contest of the year! #hamradio
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The 2025 CQ World Wide DX SSB Ham Radio Contest, A.K.A. The Return Of The Girls’ Weekend Getaway
https://web.brid.gy/r/https://km1ndy.com/2025-cqwwssb-girls-weekend-getaway/
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The #hamradio #CQWW is largely a bust for me. Solo op and 8hrs scattered over 3 sessions and I have a total of 40 contacts. Bleach. Now we did have a rain storm over night and this morning. FT8 showed that propagation was horrible, so that could be it. But dang if that isn't discouraging. Could hear many ops but couldn't get them to hear me. #ic7300 and 100W on an end fed random draped over my house roof ~30ft AGL.
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The #hamradio #CQWW is largely a bust for me. Solo op and 8hrs scattered over 3 sessions and I have a total of 40 contacts. Bleach. Now we did have a rain storm over night and this morning. FT8 showed that propagation was horrible, so that could be it. But dang if that isn't discouraging. Could hear many ops but couldn't get them to hear me. #ic7300 and 100W on an end fed random draped over my house roof ~30ft AGL.
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The 2024 #CQWW #CW #AmateurRadio contest was fantastic for me this year! I made 152 contacts with 49 different countries and 25 CQ zones for a total score of 48564 points and achieved an all-time distance record of 11318 miles from #Arizona to #Mauritius which was also an all-time new country for me! #HamRadio #DX
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Enough for this weekend. #CQWW CW was a good opportunity to give my half-finished remote setup at SO5CW a good test drive. Just above 1000 QSOs in about 20h on-air time. https://3830scores.com/showrumor.php?arg=RvYizV777LJJxU #hamradio #morsecode
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In this weekend's #CQWW #CW #AmateurRadio contest I worked #Mauritius on 20M tonight, which is approximately 11,300 miles away from #Arizona! Not only is that an all-time brand-new country for me, it is also an all-time distance record! I still marvel at the miracle of high-frequency #HF ionospheric radio wave propagation! #HamRadio #DX #3B8M
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In this weekend's #CQWW #CW #AmateurRadio contest I worked #Mauritius on 20M tonight, which is approximately 11,300 miles away from #Arizona! Not only is that an all-time brand-new country for me, it is also an all-time distance record! I still marvel at the miracle of high-frequency #HF ionospheric radio wave propagation! #HamRadio #DX #3B8M
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Working the #CQWW on my old RS HTX-10. Contacts from EU to JA 😂. #hamradio #radioshack
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During this weekend's #CW #CQWW contest I made 53 contacts with 25 different countries with three of those being new: Cape Verde, Guam and Venezuela for a new grand total of 92 countries worked! #AmateurRadio #HamRadio
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OK, the #cqww #cw contest is not over yet, but I'm done. With a (tuned) vertical EFHW 4.9 m long, a (tr)uSDX putting out about 3 W, with 8 AA NiMH batteries, and a straight key, I have managed to complete 58 QSOs in about 11 h total (11 min/QSO), reaching zones 05, 06, 14, 15, 16, 33 and 35 on 20 and 40 m, unassisted, dealing sometimes with stations hammering away at 40 WPM. I am reasonably satisfied!
