[Elecraft] When to use the preamps on the KX2/KX3 vs. K3/K3S (Wayne Burdick)

[Michael Aust]

Wayne,
   Have a KX3 here and use the Rx I/Q Ports with external SDR
receiver and applications need I/Q outputs with an HF 3dB splitter with a DXE RTR-1A
DXE box with Protection from overload Rx protection 


Noticed poor sensitivity due to the High NF when taking output from Rx I/Q at the 
Rx I/Q has great amplitude & Phase Balance ( outstanding ) 


Noted that to increase sensitivity in my Go Box had to add 
a Clifton Labs HF 11dB High IP2/High Ip3 LNA preamp to utilize the
Rx I/Q Ports on super weak Signals.


Found adding an External  Pre-Amp was necessary and with Pre-Amp On in the KX3 for Bands on 
20meters and Higher was necessary to get enough sensitivity for my necessary Rx I/Q 
applications and 3rd Party SDR Synced Receiver being driven by the KX3 and 
WIN4K3 software


73 Mike