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E
LECRAFT
KXB30
30-METER ADAPTER
Assembly and Operating Instructions
Revision A, Oct. 14, 2003. Copyright © 2003, Elecraft; All Rights Reserved
Introduction
The KXB30 adds 30-meter capability to the Elecraft KX1 transceiver. It also significantly improves
performance in the 49-meter SWL band segment (receive only) by re-resonating the KX1's receive band-
pass filter at about 6.2 MHz when the operator tunes below 6.7 MHz (with 40 meters selected). High-
performance PIN-diode switches are used to minimize insertion loss and ensure good 30-m sensitivity.
With only a dozen or so parts, the KXB30 is easy to build. The module is installed on the top side of the
KX1's main PC board. The KXB30's filters can be aligned from the bottom side of the board through the
access holes labeled
30A
and
30B
, so the top cover can be installed prior to alignment.
Specifications
30-m coverage
Transmit/receive: 10100-10150 kHz; receive only: 8000-12500 kHz.
Added current drain
Approx. 3 mA
Size
1.5" (L) x 0.75" (W) (3.8 x 1.9 cm)
