I have run my K3 from batteries for many years. Since I first got it in
fact. I do have a power supply just in case but 4 Trojan T-105s keep its
fire lit.
I do not experience any thumping, whooshing, ringing, or other noises.
Except one: the relay clicking in. But, I expect that.
It would be nice if I could get it to sound like the TARDIS whizzing about.
Kevin. KD5ONS
On Sun, 04 Sep 2011 19:41:22 -0700, John Ragle <
[hidden email]>
wrote:
> Please excuse the fact that I cut the tail off this post. I think there
> are enough copies floating in reflector land that the subject will be
> recognized.
>
> It is interesting that a significant fraction of the respondents do not
> experience the thump reported by others. Although I don't consider this
> thump or click a defect, I wonder if it can have to do with the type of
> power supply being used, e.g. a regulator transient caused by the sudden
> load. I do not experience this thump, and I am running my K3 off a 13.8
> V Pyramid switcher...definitely not what I would call a super-quality
> power supply...I have not tried a battery, but am tempted by curiosity
> to do so. What sayeth the multitude?
>
> John Ragle -- W1ZI
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