[Elecraft] New K3/K3S Beta Firmware, rev. 5.57: Faster response to high reflected power

[Don Wilhelm]

Bill,

Download and install the latest K3 beta firmware.  The time to power 
reduction due to high SWR has been reduced substantially.

73,
Don W3FPR

On 2/18/2017 8:58 PM, Bill Leonard N0CU wrote:
> I frequently wonder just how much protection a typical SWR protection circuit
> can provide against an instantaneous discontinuity if it relies totally on a
> feedback approach. If the response time of the feedback circuit isn’t faster
> than the risetime of the voltage at the output transistors that results from
> a sudden failure, then it isn’t apparent to me how this approach can provide
> reliable protection. A well-designed feedback circuit can provide adequate
> protection during tune up into a high SWR.