Altoids tin bandpass filter for 868MHz Meshtastic

LoRA mesh networking is gaining a lot of popularity, especially Meshtastic. The available modules have very lax bandpass filtering. This can be fixed by a simple filter from a tinned still can and some semirigid coax. The construction is based upon the W1GHZ Altoids Tin Filters publication for 901MHz, but tuned a bit lower. Construction Continue reading "Altoids tin bandpass filter for 868MHz…