FT952 FPV transmitter 200mW 5.8GHz consistency issue

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If you fly an RC plane or multirotor using FPV then you need a good video transmitter but it seems that in some cases, you can't rely on consistency from some manufacturers. This is the second 200mW 5.8GHz mini FPV transmitter design I've found that seems to vary from sample to sample.
What is going on?
Initial testing indicates that this version is far superior to the one I tested previously (the TS5823) but stay tuned for a full review and comparison.
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