http://arrrrv3dzzoluxubt3p24lpn7qu4rxuem3fb4kcmboji3dgpkgt4b2ad.onion/worter/antenna
Divide the speed of light by the
frequency, making sure to keep the units consistent (m/s and Hz).
For ADS-B, our frequency is 1090MHz = 1.09*10^9. λ=(c/ν)=299729458 (m/s) / 1090000000 (1/s)= 0.257 (m) Additionally, cables have a slower electromagnetic velocity than air so we have to compensate in our cable lengths.