by raceamerica » Mon Sep 17, 2018 1:46 pm
Your model numbers for the two TLinks are on the same frequency band, which is required for compatibility. I am assuming all TLinks are in good working condition and the older TLinks work with other older TLinks and the newer TLinks work with other newer TLinks from each group.
Next check the Optimizer Code located on the bottom of each unit to verify they are the same. If not, one set can be changed to be compatible with the other set. They all must be on the same Optimizer Code for compatibility.
The 5810EXR model will have higher RF output than the 5800A model, like 250% the RF output signal strength. Once these units are made compatible, the 5800A can be upgraded to the same higher RF output as the 5810EXR as a way of making all the units operate at the same level.