Elecraft KRX3 - Manual (Page 3)

3
Introduction
If your KRX3 is already installed in your K3, turn to Using the Sub Receiver on page 46 for operating
instructions.
The KRX3 subreceiver features specifications identical to the main K3 receiver including up to five roofing
filters and an independent, dedicated DSP system. The subreceiver can tune the same range of frequencies as the
main receiver, including frequencies outside of the Amateur bands when it is equipped with the optional KBPF3
general coverage filter board.
The KRX3 has three major components as shown installed in a K3 in Figure 1. The shielded enclosure contains
the main KRX3 board, mixer and noise blanker pony boards, optional KBPF3 general coverage filter board and
roofing filters that you will assemble and mount in the enclosure.
Only a few basic tools are required to assemble the components and install them in the K3 (see page 6).
Figure 1. KRX3 Subreceiver Installed in K3.