SPI-Upgred PTT uSDX Hf Qrp (PTT Baofeng AR152)

[@9w2vdnayub11]

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[@izzatyusni8212]

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[@fraga2663]

I'm going to put together a setup with a mini usdx, an ATU100 coupler and a BJ300 linear amplifier. Is any linear modification necessary due to SWR or does the coupler mitigate this problem?