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#hamchallenge

7 posts6 participants4 posts today
DF5GO<p>And of course receiving the <a href="https://radiosocial.de/tags/SSTV" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SSTV</span></a> images from <a href="https://radiosocial.de/tags/ISS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ISS</span></a> then also completes <a href="https://radiosocial.de/tags/HC42S" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HC42S</span></a> <a href="https://radiosocial.de/tags/HamChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HamChallenge</span></a> </p><p>BTW, more infos on the SSTV transmission can be found here: <a href="https://radiosocial.de/@ARISS_Intl@mastodon.hams.social/114320747283699311" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">radiosocial.de/@ARISS_Intl@mas</span><span class="invisible">todon.hams.social/114320747283699311</span></a></p>
DF5GO<p>Received <a href="https://radiosocial.de/tags/SSTV" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SSTV</span></a> images from the <a href="https://radiosocial.de/tags/ISS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ISS</span></a> using a HT with a HB9CV antenna and Robot36 on the smartphone. 🛰️ </p><p>I was a fun activity, and the kids enjoyed this, too.</p><p>I count this as <a href="https://radiosocial.de/tags/HamChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HamChallenge</span></a> <a href="https://radiosocial.de/tags/HC10S" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HC10S</span></a> <br><a href="https://radiosocial.de/tags/hamradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamradio</span></a> <a href="https://radiosocial.de/tags/amateurradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>amateurradio</span></a> <a href="https://radiosocial.de/tags/amateurradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>amateurradio</span></a></p>
Dr.-Ing. Siwli.<p>I managed to receive one of the images sent by the ISS today, using my little Baofeng UV-5R and the Robot36 app on my phone. The image is not perfect due to noise but I'm still really happy it worked.<br>Counting this as <a href="https://toot.berlin/tags/hamchallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamchallenge</span></a> HC42S and HC10S 😎<br><span class="h-card" translate="no"><a href="https://mas.to/@hamchallenge" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>hamchallenge</span></a></span></p>
Fabian Kurz, DJ5CW/SO5CW<p>For this week's <a href="https://social.darc.de/tags/hamchallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamchallenge</span></a> I observed the QRSS transmissions of S52AB on 30m. They're running 24/7 so it's a good indicator for the propagation on this 800km path. Each day I noted the times when the signal became visible in the morning and when it disappeared. The results are tabulated below. Typically the signal comes out of the noise with a big peak in the morning and then becomes weaker again, the same peak can be observed before it fades out. HC15S <span class="h-card" translate="no"><a href="https://mas.to/@hamchallenge" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>hamchallenge</span></a></span></p>
Gary @N8DMT<p><span class="h-card" translate="no"><a href="https://mas.to/@hamchallenge" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>hamchallenge</span></a></span> HC34S Match an Impedance. Successfully matched 36 Ohms to 50 Ohms at 7 MHz. Created a quick posting with the two solutions over at <a href="https://qsl.net/n8dmt/ham-challenge-hc34-match-an-impedance/index.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">qsl.net/n8dmt/ham-challenge-hc</span><span class="invisible">34-match-an-impedance/index.html</span></a> (Did not want to be spoiler to those who would work this challenge in the future. But walk-through solutions are there for check-use as helpful.) <a href="https://mastodon.radio/tags/HamChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HamChallenge</span></a> <a href="https://mastodon.radio/tags/HamRadio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HamRadio</span></a></p>
Fabian Kurz, DJ5CW/SO5CW<p>For <a href="https://social.darc.de/tags/hamchallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamchallenge</span></a> week 15 (<a href="https://social.darc.de/tags/HC15" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HC15</span></a>) I will monitor the QRSS transmissions on 30m by S52AB. The reception usually follows a clear pattern: The signal appears in the morning when the skip zone gets small enough to arrive, during the day we see increased D layer absorption, and some time at night the signal disappears again. Interestingly, if often briefly re-appears at night, probably due to sporadic E. <a href="https://social.darc.de/tags/hamradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamradio</span></a> <span class="h-card" translate="no"><a href="https://mas.to/@hamchallenge" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>hamchallenge</span></a></span></p>
HamChallenge Bot<p><a href="https://mas.to/tags/hamchallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamchallenge</span></a> week 15: Monitor a beacon or transmitter that's transmitting continuously, such as a NCDXF beacon or the DWD RTTY transmission on 10100.8 kHz, and take notes of the field strength over the course of a week (as often as you can manage). What did you notice? Did it behave the same on all days or were there differences? <a href="https://hamchallenge.org/2025/15" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">hamchallenge.org/2025/15</span><span class="invisible"></span></a> <a href="https://mas.to/tags/hamradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamradio</span></a></p>
Lars DC4LW<p>For <a href="https://social.darc.de/tags/hamchallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamchallenge</span></a> HC14S I do on- and off-site backups of my computers regularly. So my logs are also in the backup. I use <span class="h-card" translate="no"><a href="https://fosstodon.org/@restic" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>restic</span></a></span> for backup for some years already (and it is developed by a fellow amateur radio operator). From time to time I already restored some data from the backup, so this works as well.</p><p>The bigger problem are too many logfiles. Quite every digimode app comes with its own logging abilities. And I did not find a proper way to merge all logs yet.</p><p><span class="h-card" translate="no"><a href="https://mas.to/@hamchallenge" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>hamchallenge</span></a></span></p>
Jo<p><span class="h-card" translate="no"><a href="https://mas.to/@hamchallenge" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>hamchallenge</span></a></span> <a href="https://mastodon.radio/tags/hamchallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamchallenge</span></a> HC14S.</p><p>I have a laptop and a PC in the shack, both running Linux. Although my main logging is on paper, SKCC contacts are logged in SKCCLogger and WWFF logs are entered with FLE under Wine. Backup is made once in a while on an external harddisk using "Back In Time": <a href="https://github.com/bit-team/backintime" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">github.com/bit-team/backintime</span><span class="invisible"></span></a></p>
🌈 mischk 🇮🇱<p>this one was easy again. I log with POLO and export the logs, then upload them to wavelog and qrz.com. I also save them on my laptop, which is backed up once a month on an external disk. <span class="h-card" translate="no"><a href="https://mas.to/@hamchallenge" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>hamchallenge</span></a></span> HC14S <a href="https://bunt.social/tags/hamchallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamchallenge</span></a> <a href="https://bunt.social/tags/amateurradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>amateurradio</span></a></p>
Ed W8EMV :radio_tower:<p>The important bits of my ham radio log are kept in Obsidian, and my backup strategy for that is to have a copy synced to git on another machine, and another copy backed up with Backblaze. </p><p>It's not a contest log (I don't do that) and I'm not perfect about keeping it, but when it works right it lets me keep track of things like who is interested in what on various local discussion nets.</p><p>Bonus: completion on call signs, tagging, hyperlinks etc. </p><p><a href="https://mastodon.radio/tags/hamchallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamchallenge</span></a> HC14S @hamchallenge</p>
ei7ijb<p>For the 14th challenge, 'Implement and describe a backup solution for your ham radio log.’, I realised that my backup options are simple. I keep copies of my ham log in different places like QRZ, Club Log, HamQTH etc., a copy taken automatically into my personal cloud backup, and my favourite paper logbook. I’m not an active operator and do not have the need for an offsite backup. <a href="https://mastodon.radio/tags/hamchallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamchallenge</span></a> HC14S <span class="h-card" translate="no"><a href="https://mas.to/@hamchallenge" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>hamchallenge</span></a></span></p>
Jo<p><a href="https://mastodon.radio/tags/hamchallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamchallenge</span></a> <span class="h-card" translate="no"><a href="https://mas.to/@hamchallenge" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>hamchallenge</span></a></span> HC13S</p><p>Last week I made 61 QSO's from an unusual location: the second highest SOTA summit in the Netherlands at 101 meters. Story at <a href="https://reflector.sota.org.uk/t/first-sota-close-to-home-from-pa-pa-006/37784" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">reflector.sota.org.uk/t/first-</span><span class="invisible">sota-close-to-home-from-pa-pa-006/37784</span></a></p>
Jo<p><a href="https://mastodon.radio/tags/hamchallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamchallenge</span></a> <span class="h-card" translate="no"><a href="https://mas.to/@hamchallenge" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>hamchallenge</span></a></span> HC12S</p><p>Today I made a QSO with an unusual antenna (Nigel M0NGN on 7 MHz). It is a linear loaded vertical with 2 radials. The radiator is 7 meters long and consist of 450 Ohm ladder shorted at the top. This runs along a 10 meter Spiderbeam mast, so the feed point is at 3 meters high.</p>
Fabian Kurz, DJ5CW/SO5CW<p><a href="https://social.darc.de/tags/hamchallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamchallenge</span></a> Week 14: My <a href="https://social.darc.de/tags/hamradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamradio</span></a> logbook <a href="https://social.darc.de/tags/backup" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>backup</span></a> system is simple: My central log (to which I live-log contacts and import all my contest logs) is the console logger "YFKlog", which uses a MySQL database backend. It's running on a Hetzner VPS which creates nightly snapshots of the system disk that reach back seven days. In addition, a nightly cron-job creates a database dump which gets rsynced to another VPS in another datacenter. I also regularly upload my log to LoTW. <a href="https://social.darc.de/tags/HC14S" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HC14S</span></a> <span class="h-card" translate="no"><a href="https://mas.to/@hamchallenge" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>hamchallenge</span></a></span></p>
Gary @N8DMT<p><span class="h-card" translate="no"><a href="https://mas.to/@hamchallenge" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>hamchallenge</span></a></span> HC22S <a href="https://mastodon.radio/tags/HamChallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HamChallenge</span></a>: Simulate an electric circuit. Used free LT-Spice to model a ~35W P-P RF power amplifier. Included a simple output graph showing dB gain of the circuit. Other possible simulations include input return loss, output match, time domain waveforms, harmonic distortion vs. drive level, and much more. Lots of fun to learn and experiment with this circuit simulation tool.<br><a href="https://mastodon.radio/tags/HamRadio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HamRadio</span></a> <a href="https://mastodon.radio/tags/RFDesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RFDesign</span></a> <a href="https://mastodon.radio/tags/Simulation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Simulation</span></a></p>
Adam - K3CAN<p>For this week's <a href="https://social.k3can.us/tags/hamchallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamchallenge</span></a> : My primary logging software is <a href="https://social.k3can.us/tags/wavelog" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Wavelog</span></a>. The webserver and backend database both run on virtualized machines in a <a href="https://social.k3can.us/tags/highavailability" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HighAvailability</span></a> <a href="https://social.k3can.us/tags/proxmox" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Proxmox</span></a> <a href="https://social.k3can.us/tags/cluster" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cluster</span></a> (same one that hosts this instance!). Those are backed up daily to another machine on site via PBS, then those backups are synced to a remote server running in a house in another city.</p><p>In addition, my log is also synced to both <a href="https://social.k3can.us/tags/qrz" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>QRZ</span></a> and <a href="https://social.k3can.us/tags/lotw" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LOTW</span></a> every 6 hours or so, but I didn't think it qualifies as a true backup, since there is some data which those logs don't record.</p><p><a href="https://social.k3can.us/tags/hc14s" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HC14S</span></a> <span class="h-card"><a href="https://mas.to/@hamchallenge" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>hamchallenge</span></a></span> <a href="https://social.k3can.us/tags/hamradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamradio</span></a> <a href="https://social.k3can.us/tags/amatuerradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>amatuerradio</span></a></p>
HamChallenge Bot<p><a href="https://mas.to/tags/hamchallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamchallenge</span></a> week 14: Implement and describe a <a href="https://mas.to/tags/backup" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>backup</span></a> solution for your <a href="https://mas.to/tags/hamradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamradio</span></a> logbook</p><p>Describe/document your logging arrangements. Which software do you use, how do you merge logs (if at all)? Do you keep separate logs for different callsigns? How you can export/save your log, e.g. into an ADIF file? Describe how you back up your file. Do you use a cloud service? Save it on a memory stick, external HDD, or NAS?</p><p>Let's hear all about it, and hope you will never need it!</p>
Christoph Berg<p><span class="h-card" translate="no"><a href="https://mastodon.social/@philj2" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>philj2</span></a></span> I think you've passed <a href="https://mastodon.social/tags/hamchallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamchallenge</span></a> 12 and 13 😃 </p><p><a href="https://hamchallenge.org/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">hamchallenge.org/</span><span class="invisible"></span></a></p>
Lars DC4LW<p>I'm really struggling with this week's <a href="https://social.darc.de/tags/hamchallenge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamchallenge</span></a> HC13. I cannot think of an "unusual location" for doing a QSO. I would do a QSO from quite everywhere as long as it is not risky. So, I think, I'll skip this challenge for the time being and probably I'll find a suitable location later on this year. <span class="h-card" translate="no"><a href="https://mas.to/@hamchallenge" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>hamchallenge</span></a></span></p>
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