32 908
modifications
Modifications
Sauter à la navigation
Sauter à la recherche
Ligne 16 :
Ligne 16 : + + + + + + + + + +
→Introduction
[[Fichier:COMMON-CANSAT-ANTENNA-10.jpg]]
[[Fichier:COMMON-CANSAT-ANTENNA-10.jpg]]
* 23 watts cover 24 milliard of Km.
* 1 watt cover 1.04 milliard of Km.
* 0.1 watt cover 100 million of Km.
A RFM69 radio module at 20 dBm have an emitting power of 0.1 watt (100 mW).
Compared to Voyager I, the 100 mW of the RFM69 should be quite enough to transmit the data over kilometers.
{{underline|Remark:}}<br />using a rule of three between the Voyager I distance and radio power is a bit over-simplistic but is good enough for a rough estimate.
== Antenna connector ==
== Antenna connector ==