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If you are getting wind data from the TX board, and the TX led isn't blink at 3 seconds intervals, please check if you are powering the board through the 12v connector.

The TX Led is not supposed to blink every time there is a rain tip. Instead check if the value of today rain increases on the receiver display. Rain data packets are sent at each 31 seconds.
As you are still testing the system, it may help running the RX software in test mode

Tx1 and Tx2 are powered the same way through the same connector but 1 at a time, they were not connected concurrently. They are each programmed as "TX1" but not powered on at the same time. I did this because the rain was not registering so I was trying to figure out what was going on with the rain. The LED blinks every 3 seconds on Tx1 but does not blink on Tx2. I replaced the LED on Tx2 but it still doesn't blink. I am not overly concerned about the LED blinking on Tx2 because it is still transmitting wind data. "Tx2" will eventually be mounted in my basement to monitor the water level in the sump pump, and to provide temp/humidity, but mostly to make sure my basement isn't flooded because the sump pump failed.

The Rx is running in test mode. When I manually tip the rain bucket there is no reading on the receiver display or on the internal website of the receiver. I tipped the bucket slowly 20-30 times, quickly 20-30 times, and medium speed 20-30 times.

The wind speed, direction, and rain bucket I got off of ebay that are supposed to be replacement parts for the WH1080. On the actual box they came in it says WS-1000 if that helps.