[Elecraft] Which of these would make the best power supply forthe K3(S)?

[Walter Underwood]

Extra mass does not help in a gravity outage. It would just make more momentum as the power supply was flying away from the earth (centrifugal force from the earth’s rotation). It might be useful in a gravity brownout. But maybe not.

In earthquake country, we do have something like a gravity outage. The 1994 Northridge Earthquake had peak accelerations of 1.8g horizontally and over 1g vertically. That is why we bolt the house to the foundation, because the foundation could drop so fast that the house would hang in the air and come down in not quite the same spot. Oops.

wunder
K6WRU
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Oct 29, 2015, at 2:38 PM, Gary <vk1zzgary at gmail.com> wrote:
> 
> Fred,
> Gravity outages? Seriously?
> 
> Now that just cracked me up, put a smile on my face that hopefully will last all day.
> 
> Thanks
> 
> Gary
> 
> -----Original Message-----
> From: "Fred Jensen" <k6dgw at foothill.net>
> Sent: ‎30/‎10/‎2015 7:15 AM
> To: "elecraft at mailman.qth.net" <elecraft at mailman.qth.net>
> Subject: Re: [Elecraft] Which of these would make the best power supply forthe K3(S)?
> 
> I deleted all but the last post in this thread
> 
> On 10/29/2015 1:41 PM, Phil Hystad wrote:
> 
>> There is nothing better than a rock solid Astron power supply.  I am
>> yet another guy who leaves the Astron on 24x7 unless we leave for
>> vacation of more than a day.  My Astrons (I have two) are Linear
>> because in the rare case that they need some repair I am more easily
>> able to repair them (less complicated).  So far, none of my Astrons
>> have failed so that is a weak reason for a linear supply.
> 
> My Astron experience hasn't been quite as stellar as many of the others 
> on this list.  In mountain-top repeater/remote service, we've had 
> several that have never failed despite some fairly severe environmental 
> conditions.  We've also had a couple that have failed.  I took one apart 
> and was quite surprised at the construction of at least that one ... 
> ground wires wrapped around a loose screw [no lugs], "floating" 
> components, and the like.  The intermittent problem turned out to be 
> paint under a lug with a loose screw.
> 
>> Well, I do
>> like them because they are heavy and are better at staying in one
>> place.
> 
> I power my K3 with a Yaesu FP-1030A [linear and heavy] that came with an 
> FT-847 I no longer have. It's set at 14.8 V and the meter needle might 
> just as well be painted on the glass because it never ever moves. At 100 
> W, the voltage on the inside of the APP's on the back drops to 14.6 V.
> 
> It's also good at securing the desk during gravity outages. :-)
> 
> 73,
> 
> Fred K6DGW
> - Northern California Contest Club
> - CU in the Cal QSO Party 1-2 Oct 2016
> - www.cqp.org
> 
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