[Elecraft] UPS Can Be a Noise Source

[Phil Kane]

On 8/31/2017 2:56 PM, Jim Brown wrote:

> 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).

The spec sheets for both of my APC UPS devices (BE550R and BX1500G)
specify FCC Part 15 Class B.

> Second, a local computer guru, AE6KS, has observed that most UPS mfrs charge batteries at too fast a rate for good battery life. 

Both spec sheets show a recharge time of 16 hours.  Is that "too fast"?

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

>From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon