When to use the preamps on the KX2/KX3 vs. K3/K3S (Wayne Burdick)
Posted by
WB6DJI on
May 22, 2018; 3:46pm
URL: http://elecraft.85.s1.nabble.com/When-to-use-the-preamps-on-the-KX2-KX3-vs-K3-K3S-Wayne-Burdick-tp7641068.html
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
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