Mastodawn

#hamchallenge week 6 - Whistle a DIGI- or CW-QSO!

While it says this is an easy challenge arguably whistling a digimode might be very hard. Hint: It doesn't say you need to use a radio anywhere. Maybe you toot a video of yourself whistling and receive a mention back? https://www.hamchallenge.org/challenges/7/toots #hamradio

52 Week Ham Radio Challenge 2026

52 weeks, 52 challenges. The #hamchallenge is meant to inspire you to extend your horizon in amateur radio by weekly challenges that touch all aspects of ham radio.

DJ3CE 4d ago

Since I saw this years #hamchallenge s I was awaiting this week: From my QTH I have a good LOS to DB0FLX and had set up a Ubiquity device together with a Raspberry Pi for routing into the Hamnet from my local network some time ago.

For HC05S I looked at some tracroutes to see the involved links and used APRS, DX-cluster and MQTT via HAMNET(-Servers) and right now think about using MQTT as a chat…

@hamchallenge

🌈 mischk 🇮🇱6d ago

The nearest access point to Hamnet is only 1.6 km away as measured in a straight line, but i am on the second floor with many houses in between, so I am unable to establish a radio connection.
I connected to Hamnet via VPN and browsed around a bit. The web part seems a bit like the early Internet, with many private or club sites and broken links. I wish I could add a personal website, hosted on a Pi, to Hamnet. HC05S @hamchallenge #hamchallenge #amateurradio

Fabian Kurz, DJ5CW/SO5CW 6d ago

#hamchallenge Week 5: Use HAMNET.

OK, I don't know what I am doing, but it only took 5 minutes to get started on #hamnet with #wireguard thanks to https://vpn.hamnet.network/w/de/

@hamchallenge #HC05S

DJ3CE 6d ago

#hamchallenge no 2 was a good motivation to use RTTY, which so far I had only been decoding. Except for the one time I *thought* I would be fast enough to use the memos of an Icom rig to have sth like a RTTY-QSO (dr op pse excuse my unpolitely short answers…). Now I made a sked for a 2m RTTY QSO, using fldigi, answering properly. Faszinating mode, but it feels a bit weird not being able to hear the received content. We later switched to BPSK, which turned out to be more reliable :). HC02S @hamchallenge

HamChallenge Bot Jan 26

#hamchallenge week 5 - Use HAMNET!

Can you get access to the HAMNET? What services did you find useful? How did you get access?https://www.hamchallenge.org/challenges/6/toots #hamradio

NOTE: Did you know you can click the heading of a challenge on the website in order to toggle a detailed description? Plus you can click any user name anywhere in order to show more detailed statistics for that user. Try it out!

52 Week Ham Radio Challenge 2026

52 weeks, 52 challenges. The #hamchallenge is meant to inspire you to extend your horizon in amateur radio by weekly challenges that touch all aspects of ham radio.

Show thread

Fabian Kurz, DJ5CW/SO5CW Jan 19

@hamchallenge My IC-7100 has a power setting in percent rather than Watts. I just gave it a try: RW7K is CQing on 1824.7 kHz with a S9+ signal on my remote (SO5CW). With Power "0%" he didn't react to my call. With "1%" I got a "?", with "2%" I received a "CW?" and with "5%" we completed the QSO. Maybe he would have copied the full callsign even at 2% but I didn't want to torture the operator more than necessary, and I already knew he copied part of my callsign with 2%. Antenna: 16m long vertical. That's HC04S for me 🙂 #hamradio #hamchallenge

HamChallenge Bot Jan 19

#hamchallenge week 4 - How low can you go in QRP?

This challenge is about hitting the lower bands with your QRP rig: How low can you go? Can you make it to 80 m or maybe 160 m? Hint: The mode is up to you 😉 https://www.hamchallenge.org/challenges/5/toots #hamradio

52 Week Ham Radio Challenge 2026

52 weeks, 52 challenges. The #hamchallenge is meant to inspire you to extend your horizon in amateur radio by weekly challenges that touch all aspects of ham radio.

Lieven - DF1CN Jan 15

After failing to fall asleep I spend some time on the current #hamchallenge. I have a 27.5m long ZS6BKW antenna. Based on that the antenna should resonate at 5.45 MHz. Since the feedline isn't matched it acts as an impedance transformer. If the I include that in the calculation I get the second plot. Which looks quite close the the plot of the NanoVNA. The plot suggest that the often quoted length of 12.2m is not optimal and a longer feedline should be used. I will keep that in mind when I need to work on my antenna again. HC03S @hamchallenge

Fabian Kurz, DJ5CW/SO5CW Jan 12

#hamchallenge HC05 - Use HAMNET!
This is something I should have done a long time ago already - especially since I have line of sight to the Olympiaturm in Munich, which hosts DB0TVM (picture shows the view from my flat). However, according to hamnetdb.net it is currently under renovation... https://hamnetdb.net/index.cgi?q=db0tvm - I will observe the status. Would be much nicer to access the hamnet via radio rather than some VPN... #hamradio #hamnet @hamchallenge