[Elecraft] K3 sensitivity below 40 meters

[Don Wilhelm]

The original question was *NOT* about the K3, but the KX3 which is 
different than the K3 due to a different design architecture.

73,
Don W3FPR

On 11/13/2012 9:39 AM, kt5d at charter.net wrote:
> Conventional wisdom historically has been that a receiver preamp is not
> used at 40 meters and below primarily because it is not needed, indeed
> it would typically degrade receiver performance. So why is it necessary
> to engage the 20 dB preamp on the K3 to get it to hear an S9 signal at
> the appropriate level of other receivers?
>