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1750 Hz Pipe

Tags: pipecalc amateur-radio

For many amateur radio repeaters a 1750 Hz tone call is needed to access them. As a fun project I designed a pipe that produces that tone.

1750 Pipe 1
1750 Pipe 2
1750 Pipe 3

1750 Pipe 4

I printed it on an Anet A8 3D-printer at 0.1mm layer thickness and it works fine. Depending on the pressure it generates tones between 1600 and 1850 Hz before it overblows. I was able to access multiple repeaters with this pipe, but some require a pretty steady tone.

Download

STL file