Hi friends, i had not trusted using SMPS, had tried some and the noise level was never acceptable, however last two days i'm using a new SMPS Wouxun SPS30 with my K3/P3 and i checked noise level of this PS is really low, i have not been able to detect it visually on P3 nor acoustically. 30 Amps on small package is great!, K3/P3 and SMPS great combination.
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