Whole shack mains power filter

This is based on a shack mains filter described by GM3SEK. The aim is to filter all power entering the shack before it connects to all equipment. The purpose is to remove interference which can cause increased QRM on the receiver. The design feeds power to the shack via a Schaffner FN2030-16-06 power line filter before passing through a type 31 clip on ferrite then a binocular ferrite core and finally a type 43 ferrite.

Live ADS-B and Mode S Flight Tracking

I collect live aircraft transponder data using a Raspberry Pi with a Software Defined Radio (SDR) dongle attached. A collinear antenna feeds the received signals to the SDR which are then processed by the Pi. Receivers around the world send this data over a real-time connection to FlightAware, which aggregates the data and provides flight tracking data and interfaces.

Aircraft with an ADS-B transponder broadcast their identification and this three dimensional position (latitude, longitude, altitude) on 1090MHz or 978MHz, which can be received by a radio within line of sight of the aircraft (a maximum of 300mi / 480km at cruise). Approximately 70% of airliners around the world and 10% of private jets currently have ADS-B, whereas nearly 100% have Mode S.

TingGS Satellite Ground Station

TinyGS is an open network of Ground Stations distributed around the world to receive and operate LoRa satellites, weather probes and other flying objects, using cheap and versatile modules. I support the network using a TTGO T-Beam ESP32 LoRa APRS 433MHz +OLED T22 ERP32 GPS.

PIXIE 7MHz QRP CW Transceiver

The PIXIE is a low power QRP CW transceiver kit. Constructed the PIXIE transmits on 7.023MHz with an output of 0.8 Watts at 9 Volt / 1.2 Watts at 12 Volts. For those holders of the UK Foundation licence this is an ideal, cheap project to use as part of your Intermediate course.