nyan:link_budget
−Table of Contents
Link Budget
PRX=PTX–LTX+GTX–Lfreespace–Lmisc.propagation−Lpolarisation+GRX–LRX
Polarisation loss from heal can be calculated. It might also be worth working out losses due to heal and aerial directivity.
Free space loss
Distance (km) Distance (nautical miles) Frequency (MHz) Loss (dB) Fresnel r (m) 1 0.54 434 -85.2 13.1 1 0.54 869 -91.2 9.3 10 5.40 434 -105.2 41.6 10 5.40 869 -111.2 29.4 20 10.80 434 -111.2 58.8 20 10.80 869 -117.2 41.5 30 16.20 434 -114.7 72.0 30 16.20 869 -120.8 50.9 40 21.60 434 -117.2 83.1 40 21.60 869 -123.3 58.7 50 27.00 434 -119.2 92.9 50 27.00 869 -125.2 65.7 60 32.40 434 -120.8 101.8 60 32.40 869 -126.8 71.9
Bibliography
nyan/link_budget.txt · Last modified: 2023/12/11 14:13 by river