Shannon, great job moving the science forward. It seems like your line of experimentation could lead to a simpler way to count rain gauge tips and transmit the data to MMW possibly without using a ProTrinket. Maybe if a tip happens while a cellular transmission is happening the transmission could be interrupted, the tip could be counted, and then during the next send interval the data could then be sent to MMW. I am looking for a way to reliably count every tip and send all tip data to MMW even if a send interval is missed here or there.
Using @aufdenkampe ‘s advice as a clue I replaced the 25′ of extra, coiled, shielded analogue signal cable from the original installation between the rain gauge and the ProTrinked with a 3’ length of shielded analogue signal cable on 11/6/2020 and haven’t had any false tips since.
Thank you everyone for the input.