Description
This DIY kit contains everything you need to assemble a simple Low Pass Filter (LPF) for the Raspberry Pi WSPR Transmitter using GPIO pins. Note: An amateur radio license is required to transmit. Raspberry Pi not included. Assembled filter displayed in the photo is the 20m version. This kit can be used for other QRPp applications, but is designed for the Raspberry Pi. NOTE: This kit contains an updated design with Schottky diodes to provide some level of protection to your Raspberry Pi from stray voltage when the antenna is connected! NOTE: The kit no longer contains the vinyl standoffs! 10m version