Another GM3OXX OXO Transmitter Build by AA7EE

This project details the construction of a GM3OXX OXO transmitter, designed to utilize FT-243 crystals. The author shares insights into the design process, including the use of 3D-printed holders for modern crystals, specifically the FX-243 kit by John KC9ON. The build incorporates a trimmer capacitor of 45pF, which can be wired in series with the crystal, and offers options for additional components like a series inductor for frequency adjustments. The construction method emphasizes the use of a diecast case for housing the transmitter, highlighting practical considerations in the design phase. This project is aimed at homebrewers interested in building compact transmitters compatible with vintage crystal types.