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I have the Tecsun PL-310ET and PL-660 SW portables which are spec’d for 5V and 6V power sources respectively. Would it damage them if I tried to power them with a 9V Bioenno battery (actual steady voltage ~9.6V)?

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  • $\begingroup$ Welcome to ham.stackexchange.com! $\endgroup$ – rclocher3 Dec 11 '19 at 0:28
  • $\begingroup$ If the manufacturer doesn't explicitly say that the input voltage range can go up to 9V, then I would go on the assumption that catastrophic damage would occur. $\endgroup$ – Duston Dec 11 '19 at 20:41
  • $\begingroup$ To be safe use 4 or 5 rectifiing diodes in series with 9V battery and you will be in ballpark of safe voltage (there is 0.7V drop on each diode) $\endgroup$ – Pedja YT9TP Dec 21 '19 at 8:56

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