Elecraft KRC2 Manual User Manual

Kr c2, Le craf t

Elecraft • www.elecraft.com • 831-662-8345

LE CRAF T

KR C2

BA ND D ECOD ER a nd C ONTR OLLE R

Assembly and Operating Instructions

For firmware Version 1.5 and later

Introduction

The KRC2 is a universal, programmable station control unit that can switch any combination of
antennas, filters, amplifiers, or other equipment. It supports analog, digital, and RS232 control
inputs, so it's compatible with transceivers from Elecraft as well as other manufacturers. Decoded
outputs are provided for all HF bands (including WARC bands and 60m), three transverter bands,
and general accessories. High-side (source) and low-side (sink) relay drivers are included. All
signal lines are RF bypassed to minimize RFI and noise pickup.
Individual driver outputs can be wire-ORed. However, the KRC2 also provides a PC-based
command interface, allowing the user to configure the unit. New firmware can even be
downloaded via the Internet.
Additional features are available when the KRC2 is used with our K2, K2/100, K3 and K3/100
transceivers. The ACC menu entry can be used to directly control the KRC2's accessory outputs.
Four buttons on the top of the KRC2 can be used as "hot keys" for instant access to CW message
buffers, fast switching of the RXANT jack, or other functions.

Specifications

Outputs

32 (16 sink, 16 source)

Output Driver Ratings

500 mA max, 50 V max (sink and source)

Analog Inputs

0-5 V (1 input), 0-10 V (2 inputs)

Band Decode Formats

Elecraft, Icom, Yaesu, Kenwood

Internal Current Drain

Approx. 20 mA (excludes output driver current)

Size

5.5" (L) x 3.5" (D) x 1.5" (H) (14 x 11.4 x 4 cm)

Caution: Some parts in this kit can be damaged by static discharge. Before handling any

transistors or ICs, put on an anti-static wrist strap, or touch a grounded, unpainted metal surface.

Refer to our web site for a complete listing of compatible formats and transceivers.