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  1. weedogt

    Linbudget for a 433 MHZ system

    VE1BLL, the path loss is correct, there's just a typo in the calculation. It should look like this: Path loss (free space) = 20*log(433)+20*log(180)-28 = 69 dB Yes, the Tx power and Rx sensitivity should be in dBm (not dB). /weedo
  2. weedogt

    Linbudget for a 433 MHZ system

    Hi, I'm designing a simple 433 MHz radio link to transmit some low rate measurement data from a bridge/quay to a building nearby. I need some help estimating if I will get a reliable communication. Please have a look at this page (a draft of the surroundings)...

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