52 Week Ham Radio Challenge 2025 - Week 34: Match an impedance!

Challenge for 2025-08-18 - 2025-08-24:

Category: 🛠️ - Difficulty: 🔴

Match an impedance!
You've got an antenna that has a feed point impedance of 36 Ohms at 7 MHz. How can you match it to 50 Ohms? Try using an online Smith Chart tool to create a matching circuit!


Toots mentioning this challenge

DateUserUser scoreStatusToot summary & link
2025-04-08 22:15:25n8dmt@mastodon.radio21Success!HC34S Match an Impedance. Successfully matched 36 Ohms to 50 Ohms at 7 MHz. Created a quick posting with the two solutions over at https://qsl.net/n8dmt/ham-challenge-hc34-match-an-impedance/index.html (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.) #HamChallenge #HamRadio
2025-08-18 20:42:21ian@mastodon.radio32Success!Ham Challenge week 34 was to use an online Smith Chart tool to create a matching circuit for an antenna with an impedance of 36R at 7MHz.I still haven't really got my head around Smith Charts, but I seem to have done the job with a 4nF capacitor in series and then a 1uH inductor to ground? Maybe!#HamChallenge HC34S
2025-08-21 21:44:58ei7ijb@mastodon.radio8Working on it...For the 34th challenge, 'Match an impedance!’, I will give it a try. #hamchallenge HC34 @hamchallenge

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