Good morning David,
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I just discovered the same issue! I use my Sanken COS-11D and Countryman EMW using the Rode Wireless GO II on my Zoom F4 with great results.?
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However, I tried pluging directly into Rode VXLR + on my Zoom and on my studio mixer, and I get about 10db static noise compared to the Wireless GO II.?
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I tried 2 different VXLR+ with the same results.?
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Where did you get your 100uF tantalum capacitor?
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Thanks