1
\$\begingroup\$

Was checking few online calculators for dipole antenna length computation, and found that each tool, gave a different length. Is dipole construction based purely on heuristics, or is there some sound mathematical model to determine the dipole lengths ?

The two calculators, for instance, whose answers do not match -

Any one of the two, which I could consider authoritative ?

\$\endgroup\$
1
  • \$\begingroup\$ @Mods, you could go ahead and close the question, as there was a misunderstanding on my part. See comment on accepted answer. \$\endgroup\$
    – bdutta74
    Commented Mar 24, 2013 at 20:31

2 Answers 2

2
\$\begingroup\$

so at 100 MHz, Calculator one yields a dipole antenna length of 4.68 feet, while calculator two give a length of 4.6822 feet. How closely do you expect them to match?

\$\endgroup\$
2
  • \$\begingroup\$ Thanks @Dave for taking time to answer, but I must've been very tired to have missed the decimal conversion of metric units. While one tool reported 6-1/4 inches for 900MHz, the other gave 0.52 feets. What I missed was converting feets into inches. So yeah, effectively the tools do agree. \$\endgroup\$
    – bdutta74
    Commented Mar 24, 2013 at 20:30
  • \$\begingroup\$ No Problem. Unit conversions have stumped everyone once or twice... \$\endgroup\$
    – rfdave
    Commented Mar 24, 2013 at 20:39
0
\$\begingroup\$

I plugged-in 100MHz and got 1.426m on both. One of us is being stupid and I'm not ruling out that it is me.

\$\endgroup\$
2
  • \$\begingroup\$ Nope @Andy, the stupid guy in this case, is writing this comment. See my clarification above as comments to Dave's answer. \$\endgroup\$
    – bdutta74
    Commented Mar 24, 2013 at 20:37
  • \$\begingroup\$ @icarus74 LOL - I was beginning to have personal doubts!! \$\endgroup\$
    – Andy aka
    Commented Mar 24, 2013 at 20:45

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.