Re: UPS Can Be a Noise Source
Posted by
N7US on
Aug 31, 2017; 10:29pm
URL: http://elecraft.85.s1.nabble.com/Wattage-Draw-K3S-100-vs-KPA500-KAT500-for-UPS-tp7633842p7633929.html
I forgot to add that the manual says it produces a sine wave.
73, Jim N7US
-----Original Message-----
I have an APC SmartUPS 700, which I bought many years ago from
http://www.refurbups.com/. The manual says it's certified as Class B.
73, Jim N7US
-----Original Message-----
On 8/31/2017 11:35 AM, Tox wrote:
> I had a couple racks of APC
> SmartUPS 2000 units with daisychained batteries to give extended
> holdup to a couple of racks of telecom and server hw. No clue how RF
> noisy those units are, though.
All of the APC units for which I've seen spec sheets are FCC Part 15 Class A
(the industrial spec, ILLEGAL to sell for residential use, roughly 20 dB
worse than Class B).
73, Jim K9YC
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