This appears to be cross-posted between mailing lists, something I would
not recommend. I'm dropping the one to which I am not subscribed.
There are two classes of "12V" equipment:
* equipment designed for lead acid batteries, of which amateur radio
equipment is typical;
* computer equipment.
The former is actually designed for 13.8V with a wide tolerance,
although mainly downwards.
The latter is designed for 12.0V with a tolerance of maybe 5%, and
expectations of rather better. Depending on what it contains, it may
actually tolerate a rather wider range.
--
David Woolley
K2 06123
On 05/09/17 01:09, Phil Kane wrote:
That is true for Elecraft equipment but I was referring to "generic" 12V
stuff. For example, some "12 V" things that I use are external disk
drives, powered USB hubs, radio accessories, and computer peripherals of
all sorts. Some manuals list this, sometimes we are lucky just to get
an instruction sheet with pictures let alone text.
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