Elecraft KX1 Manual - Manual (Page 4)

E
LECRAFT 3
Introduction
The Elecraft KX1 is a compact, multi-band CW transceiver
optimized for backpacking and travel use. With internal battery,
internal automatic antenna tuner, log-book lamp, and plug-in keyer
paddle, it offers a high level of integration.
Unlike most transceivers, the KX1’s controls are located on the top
of the cabinet, and the keyer paddle attaches at the front. This “trail-
friendly” format is ideal for hand-held or lap-top operation, e.g.
when sitting on the ground, using a camp chair, reclining, or even
standing. The KX1 is also at home on a table or desk, providing an
optimal display viewing angle without the need for a tilt stand. The
unique plug-in keyer paddle is both physically reversible for right- or
left-handed use.
The transceiver covers the full 40 and 20 meter bands, and optionally
80 and 30 meters. The VFO is based on a DDS (direct digital
synthesis) IC, so it can also tune well outside each band, covering
many popular SWL band segments. A variable bandwidth crystal
filter permits reception of SSB and AM as well as CW, facilitating
cross-mode contacts and broadcast reception.
The KX1’s internal six-cell battery pack can be changed in seconds
with the removal of two thumb screws. The battery provides 1 to 2
watts power output, which represents a good tradeoff between
battery life and communications efficiency. An external 12 V supply
increases output to about 4 watts. Low receive-mode current drain
(35 mA typ.) results in battery life of 20 hours or more. The low-
battery warning threshold can be adjusted to match the battery type
used.
The KX1 uses a 3-digit LED display that is physically rugged and
extremely efficient. It requires just 1 to 2 milliamps total current in
moderate lighting conditions, and about 10 mA at its brightest setting.
The operator can optionally configure the display to turn off 5 to 60
seconds after any front-panel control has been used. Operation without
the display is possible if the CW feedback feature is turned on (audio
Morse code). This provides audible announcement for the VFO dial,
menu text, and all controls.
Additional operating features include instant band selection, nine
frequency memories, three VFO tuning rates, receive incremental tuning
(RIT), USB/LSB receive on all bands, and an S-meter display mode.
The built-in keyer offers Iambic modes A and B and two message
buffers. In an emergency, two of the front panel switches can be
configured for use as a manual key or keyer paddle.
Despite its compact size and many built-in accessories, the KX1 is easy
to build. The basic unit consists of a single printed circuit board, with no
surface mount components to install (the three surface mount parts used
are pre-installed). Assembly and test are completed in phases to simplify
any needed troubleshooting, and only a few alignment steps are
required.
We’d like to thank you for choosing the KX1 transceiver, and hope it
meets your expectations for ultra-lightweight portable operation.
Wayne Burdick, N6KR
Eric Swartz, WA6HHQ