[Elecraft] K3 - How much supply voltage is too much?

[Jim Brown]

On 5/10/2011 10:54 AM, Ross Primrose N4RP wrote:
> I have a surplus laptop switching supply that's 15V @ 5A. Is that too
> high a voltage to run my 10W K3 on routinely?

If it were my radio, I would add one or two silicon diodes in series 
with the positive lead to reduce the voltage to about 14 volts. For a 
10W K3, I'd guess that 5A diodes would be just fine.

If it's a laptop supply, I would also be concerned about RF noise that 
it might produce.

73, Jim K9YC