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Pluto SDR Gnu radio companion Carrier Over shhot problem?

Category: Hardware
Product Number: Adalm Pluto SDR
Software Version: Gnuradio 3.10

Hi, I am a New user of plutosdr. when i am using Plutosdr Module with some modulation techniques i observed that the carrier is coming first with maximum gain, after 2 or 3 seconds modulated waveform is coming out of radio module. which effect causing problem to my power amplifier. i am looking for solution for this problem  

I am Uploading the video of the problem