Reply to "Menards new engines are now online"

BOB WALKEROGR Forum Member SUPPORTING MEMBER

The two metal cans are most likely crystals which suggest a carrier around 900MHZ. The stripes on the left hand edge of the pictured PC board is the modem antenna. I have tested various control systems using all three RF carrier approaches and the carrier choice does not materially affect the system overall performance. Menard's choice may have been based on what modem chips they could obtain as there has been a widespread modem chip shortage affecting everyone.

12/14/212:25 AM

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