W4/VP9KF

W4/VP9KF Logo

W4/VP9KF




 

 RSS news feed help F:132 A:19 K:2.67 SSN:98  WWV Log VP9KF, G4BKI & EI6LC
Last reload: 2025-07-12 05:28:31Z

Latest WWV data: 2025-07-12 05:15:09Z

 Data policy  Disclaimer

Moxon HF antenna design calculator
v0.5. Under testing.
Calculate Dimensions
Wire diameter:
In millimetres
Frequency of operation:
In MHz


This is a World Wide Web front end for a public domain program written by W4/VP9KF using PHP. This program has been derived from a public domain BASIC program written by L. B. Cebik, W4RNL and previously published on the web.

Reviews:
Hi Paul I have used your Moxon calculator for 2 antennas. One for 24 MHz the other 18 MHz using Ali tubes. The calculator is spot on and no SWR adjustments required. Thank you. I am Amazed. Michael ZS1RJQ. G8RJQ.

Just a little feedback regarding your online Moxon calculator. I used another calculator online, built and tested an antenna, seemed ok until I bought a NanoVNA and found that the antenna was actually resonant a whole 1 MHz below the intended frequency! Re-built the antenna using your calculator, it’s now within 50Hz of my design frequency, way better. I’ll put it to the test in the next few days, see how it performs, many thanks. Regards - Brian (CT7BOD)

footer
  © 2003-2025 W4/VP9KF, Paul H. Evans. All rights reserved. IP footer
User Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com) IP Address: 216.73.216.252