29 917
modifications
Modifications
Sauter à la navigation
Sauter à la recherche
Ligne 1 :
Ligne 1 : − == Introduction ==+ − What ever you do, the antenna is always one of the most sensitive component when working in the radio area. − The following schema shows how to wire the RFM69HCW to transmit data. − − [[Fichier:ENG-CANSAT-RFM69HCW-TEST-00.jpg|520px]] − − As you can see, the antenna is made of a simple wire. − − Remove the wire and the data would not transmit at 1 meter of distance, even on the same desk! − − Remember, '''the antenna is the key''' to transmit data over a long distance! − − == Antenna connector == − The radio modules usually offer a spot to solder antenna. − − With the RFM69HCW the antenna spot allow you to connect an antenna in 3 different ways. − − [[Fichier:ENG-CANSAT-RFM69HCW-Antenna.png|240px]] − − Later on, you would focus on antenna choice: − * A wire inside the antenna hole (also said a ''wire dipole'' or ''simple dipole''). − * A {{pl|1418|µFl connector}} to plug antenna. − * A {{pl|1419|PCB SMA connector}} also to plug other kind of antenna. − − The cheapest antenna is the wire antenna (''simple dipole'') and the best option is the SMA connector (also mode heavy). − − The {{pl|1418|µFl connector}} (also named uFl) is looking to this: − − [[Fichier:ENG-CANSAT-RFM69HCW-TEST-uFL-connector.jpg|150px]] − − A {{pl|1419|PCB SMA connector}} is looking to this: − − [[Fichier:ENG-CANSAT-RFM69HCW-TEST-SMA-connector.jpg|150px]] − − == Cheap Yagi == − While reading [https://arduino103.blogspot.com/2018/08/ballons-meteorologiques-tout-savoir-sur.html some resources on the QSO magazine] (Belgian Radio Amateur Association magazine written in french and dutch), we did discover a Yagi Antenna tuned for 433Mhz. − − [[Fichier:ENG-CANSAT-ANTENNA-10.png|480px]]<small><br />Source: QSO Magazine via [https://arduino103.blogspot.com/2018/08/ballons-meteorologiques-tout-savoir-sur.html this publication] - '''click to enlarge'''</small> − − xx − − −
Contenu remplacé par « {{ENG-CANSAT-NAV}} {{COMMON-CANSAT-ANTENNA}} {{ENG-CANSAT-TRAILER}} »
{{ENG-CANSAT-NAV}}
{{ENG-CANSAT-NAV}}
{{COMMON-CANSAT-ANTENNA}}
{{ENG-CANSAT-TRAILER}}
{{ENG-CANSAT-TRAILER}}