For PM3D multi installs we have used the L-bracket that is supplied with the cellular modem to mount it to the sprayer. However, this bracket is limited din the size of member it can be bolted to, and it has been determined it is not sturdy enough and may break over time due to fatigue from repeated bouncing of the modem.
What done looks like
A complete part entry in PartsBox with a 3D .STEP files and a pdf drawing showing important dimensions.
Cost estimate for 20 pcs from SendCutSend or OshPark.
Source any additional hardware, like the screws that attach to the back of the modem. (The ones supplies are low quality and probably the wrong length.
Additional Information
Design the bracket from stainless steel or powered coated aluminum or similar (heavy corrosion environment)
1/8" SS or 1/4" Al is probably sufficient
Co-ordinate with installer to determine likely U-bolt sizes needed.
What's wrong
What done looks like
Additional Information