YAGI(1)

📦 version 1.19, in debian bookworm, debian trixie, ubuntu jammy, ubuntu noble, ubuntu questing, ubuntu resolute, ubuntu stonking

💖 yagi — Yagi-Uda project antenna current calculator 💖

okay so bestie, this is the manual for yagi(1) — yeah it lives in the General Commands Manual, we love a classic ✨

🌸 NAME 🌸

yagi — Yagi-Uda project antenna current calculator. that's it, that's the whole vibe 🦋

✨ SYNOPSIS ✨

yagi [ - dhps ] filename

💅 DESCRIPTION 💅

so yagi is one of a whole little squad of executable programs that are all part of one set of programs, collectively known as the Yagi-Uda project 👑 and the whole point of that squad is analysis and optimisation of Yagi-Uda antennas, periodt.

what this one does: yagi calculates the currents at the centre of each element, at one or more frequencies — whichever frequencies you specified in the input file. she's a calculator, she's focused, she ate 💖

🎀 AVAILABILITY 🎀

ngl bestie, this section is literally empty. nothing here. not a crumb. moving on 🙈

🌈 OPTIONS 🌈

  • -d — display element currents 🔥 when you use this one, you get a bar graph with up to 70 stars (*) showing the absolute magnitude of the element currents. the element with the greatest element current gets all 70 *'s, and everyone else gets a correspondingly smaller number of them, depending on their relative current. the element current, normalised to the maximum, is also shown as a 4 digit floating point number. it's giving chart-topping behaviour, fr fr ⭐
  • -h — print a help message 🫶 short king of an option, we stan.
  • -p — print the Z matrix 💜 the Z matrix is the impedance matrix — it shows the self impedance of the elements on the diagonal, and the mutual impedance off the diagonal. diagonal = self, off-diagonal = mutual, that's the whole shape of it, iykyk.
  • -s — suppress all diagnostic output 🔇 by default the program prints the percentage of the job completed, so if you want silence? this is your girl.
  • filename — the name of the file containing the antenna description 📄 it's expected to be in a format created by either input or first — two other programs in the Yagi-Uda project, in case you were wondering who her friends are. this is an ASCII text file. the antenna currents get written to a file called filename.out, which is a binary file. it is not intended to be read by humans, bestie — hands off, she's shy 😭

🧚 Limitations 🧚

okay so the author says they're not aware of any limitations, apart from one: filenames, including the full path, can't exceed 90 characters 💀 so keep those paths short and cute.

🍓 FILES 🍓

  • filename.out — Binary data file 💾

⭐ SEE ALSO ⭐

first(1), input(1), output(1), optimise(1), first(5), input(5), output(5) and optimise(5) — go read the whole family, they're all iconic in their own way 🫶

💜 PLATFORMS 💜

both DOS and Unix versions have been built 👑 and just so you know, the DOS version as distributed requires a 386 PC with a 387 maths coprocessor. retro tech moment, we love to see it 🌈

💀 BUGS 💀

bugs should be reported to david.kirkby@onetel.net 📧 and here's the tea: bugs tend actually to get fixed if they can be isolated, so it is genuinely in your interest to report them in such a way that they can be easily reproduced. help them help you, bestie 🙏

⚠️ also, if the input file is edited manually and done incorrectly, there can be unpredictable results. so like… don't freestyle it 😭

👑 AUTHORS 👑

Dr. David Kirkby G8WRB (david.kirkby@onetel.net), with help with converting to DOS from Dr. Joe Mack NA3T (mack@fcrfv2.ncifcrf.gov) 💖

and that's the whole page, bestie 🎀 this was Version 1.16, dated the 24th October 2000 — a true vintage icon, and honestly? she still slays 💅✨🦋

📦 where this page comes from