OPTIMISE(5)

💖 OPTIMISE(5) 💖

okay bestie, gather round, because this is the OPTIMISE(5) page from the File Formats Manual and it's literally all about the output data file formats for the Yagi-Uda project's optimise program. yes we're talking file formats. yes it's iconic. let's go 🦋

✨ NAME ✨

optimise — output data file formats 💅

🌸 DESCRIPTION 🌸

so this page spills the tea on the output formats of the files that the Yagi-Uda project's optimise program creates. 🫶

the input files that optimise needs are plain ASCII, and you can get them from input or first. or honestly you can just hand-craft them yourself in a text editor if you're careful about it — no gatekeeping here, just be careful, okay? the format that optimise actually requires is described over in input(5). 📝

and the output files? they've got the .bes extension, and they're the exact same format as the input files — which, again, input(5) explains. so yeah, it's giving full circle. 🔥

🎀 Example of a .up file 🎀

the .up file is basically the receipts of every glow-up optimise gives an antenna design. you start from the original design, and then every single time a new and better design gets found, the file gets appended. 💖

here's an example, and heads up: the final line is the performance of the 4 element beam with the .dat file shown earlier. 👑

    1 7.57dBi,  16.93dB F/B, Z=(31.77-56.34j) Ohms, SWR=3.95, SL=16.95 dB
   84 7.58dBi,  16.93dB F/B, Z=(31.78-56.32j) Ohms, SWR=3.95, SL=16.95 dB
  623 7.58dBi,  16.93dB F/B, Z=(31.78-56.28j) Ohms, SWR=3.95, SL=16.95 dB
89345 9.74dBi, 103.06dB F/B, Z=(37.55 +1.61j) Ohms, SWR=1.33, SL=17.78 dB

🧚 What is what in the .up file 🧚

okay so decoding time, because this is the part where the columns are lowkey doing the most:

• the first column is an integer that tells you the iteration ✨
• then, reading left to right, the other columns are: gain (dBi), FB, input impedance, VSWR, and the level of the most significant sidelobe — which is measured in dB down on the peak gain 💅

🌈 SEE ALS0 🌈

yagi(1), output(1), input(1), optimise(1), first(1), input(5), output(5) and yagi(5).

👑 AUTHORS 👑

Dr. David Kirkby G8WRB (david.kirkby@onetel.net) 💜 — and big shoutout for the help with converting to DOS from Dr. Joe Mack NA3T (mack@fcrfv2.ncifcrf.gov). 🫶

aaaaand that's a wrap, bestie! 🎀 this whole thing is Version 1.16, dated 24th October 2000, and it lives in OPTIMISE(5). mwah, go optimise something gorgeous ✨💅🦋