I make all of my pcbs in my work shop. I use the toner transfer method to transfer the design to the copper. Etching is done with potassium persulfate.

Design mixer: https://odysee.com/@MeesElectronics:8/Building-a-transmitter-part-3-the-mixer-and-reference-oscillator:c

Mees is pronounced: maze

More information and all the design files: https://www.meezenest.nl/mees

Open Source Creative Commons Open Source Hardware Association Open Source Initiative

My Dutch channel: @MeesElektronica

Support my work: https://ko-fi.com/meeselectronics

Sound effects: https://bigsoundbank.com https://freesound.org