[Elecraft] RFI on K3s

[Clay Autery]

That is woefully unacceptable voltage regulation...  you have an issue. 
I believe the MAX spread on the K3 is 11-15 VDC IIRC.

______________________
Clay Autery, KY5G
MONTAC Enterprises
(318) 518-1389

On 6/20/2016 12:33 PM, James Walker wrote:
> This thread has lead me to notice the comments on operating voltage. I’ve been having some trouble with my K-3 and the MCU LD message on startup. It was suggested that I monitor the voltage on the rig during operation. I get the 13.5 on receive. But the voltage drops as low as 10.5 on 100 watt transmit. I have an Astron power supply that is rated at 35 amps, very conservative for this usage. I have used it to power 100 watt rigs in the past with no problem.
>
> Is it normal to register voltage as low as I’m seeing on my K-3? The power supply has meters for amps and volts and the voltage indicated during power cycles is unchanged. So it appears the voltage drop is at the rig. I can ever see dimming of the dial light in some situations. I don’t think the power supply is failing since I don’t notice these symptoms with any other rigs. And no, I never use the power supply for more than one rig at a time.
>
> Jimmy Walker
> WA4ILO
> Macon, GA
>
> On Jun 20, 2016, at 1:09 PM, Clay Autery <cautery at montac.com<mailto:cautery at montac.com>> wrote:
>
> Mine IS one of the newer ones that was originally 14.19 VDC.  I
> learned where the pot was at HAMCOM, and the first thing I did when I
> got home was adjust it to provide the K3s 13.8.
>
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