110 ELECRAFT
10. Options
The K2 can be customized using a variety of internal and external options,
which are briefly described here. Note: If you press a switch associated with a
missing option module, you'll see N O T I N S T (not installed) on the LCD.
Menu parameters for missing options will be displayed as "- - ".
KSB2 SSB Adapter: The KSB2 allows the K2 to transmit and receive LSB
and USB, which enables use of voice as well as PSK31, RTTY (AFSK),
SSTV, and other data modes. VOX and PTT are supported, and power output
can be set from about 0.5 to 15 watts (PEP). The adapter's crystal filter is
optimized for SSB transmit and receive, but can also be used for CW or AM
receive. Mic gain and speech compression level can be set using the menu.
Our MH2 Heil/Elecraft hand mic is ideally suited to use with the KSB2.
KNB2 Noise Blanker: The KNB2 is effective on a wide range of noise
sources, and includes two gain settings as well as two different blanking
pulse widths. The noise blanker is controlled using two dedicated front-panel
functions, N B and L E V E L .
KAT2 Automatic Antenna Tuner (ATU): Our internal QRP ATU handles
a wide range of impedances, tunes nearly any antenna–on any band–in
seconds, and stores all data for instant band recall. Best of all, it includes an
integral dual antenna switch (controlled by A N T 1 / 2 ), providing the
functionality of two antenna tuners in one. The KAT2 uses latching relays, so
current drain is nearly zero except when an antenna is being tuned.
KAT100 High-Power Automatic Antenna Tuner (ATU): The KAT100 is
a rugged, external ATU that's the ideal companion for the K2/100. It can
handle up to 150 watts, and like the KAT2, provides two antenna jacks
accessible with the A N T 1 / 2 switch. The KAT100 offers the same matching
range, menu control features, and display capabilities of the KAT2, and in
addition offers 10 LEDs for real-time monitoring of SWR. Note: The
KAT100 can be used with the basic K2 as well as the K2/100. The basic K2
must have the KIO2 option installed to control the tuner.
K60XV 60-m Adapter and Transverter Interface
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: The K60XV adds 60
meter coverage and a low-level, split RX/TX transverter interface (~0 dBm).
K160RX 160 m Adapter and RX ANT Switch: The K160RX option
includes all components necessary to put the K2 on 160 meters, along with a
receive antenna switch. The receive antenna switch is particularly useful on
160 meters, where operators often need a low-noise receiving antenna.
KBT2 Internal 12-V Battery: The rechargeable battery fits snugly into the
top cover along with the KAT2 ATU and/or KIO2. Recharging requires an
external 13.8-14.2 V regulated power supply, which can also power the
transceiver. The internal battery kit includes a rugged, custom-designed
battery bracket; gold-plated connectors; reverse-polarity protection diode; and
a heavy-duty 10-A disable switch that is accessible from the rear panel.
KIO2 RS232 Interface: This option allows full computer control of the K2,
and uses true RS232 signal levels (no external level converter required). It
works with most transceiver control and logging software, as well as our own
k2remote and k2voice programs. RS232 voltages are derived from an on-board
crystal oscillator rather than a driver IC oscillator, minimizing RF noise.
KAF2 Audio Filter and Real-Time Clock: This module provides 3 kHz
low-pass and narrow CW band-pass functions, using low-noise analog
circuitry. The A F I L switch controls filter selection. The real-time clock
provides time/date display, and includes its own long-life backup battery.
KPA100 Internal 100-Watt Stage with RS232 I/O: The KPA100
completes the K2 as a 100 W PEP/CW transceiver. The kit comes with its
own top cover/heat sink that replaces the K2's original top cover. If you have
the KAT2, KBT2, or KIO2 options, you can leave these installed in the
original cover. The KPA100 can then be easily removed, and the original
cover reinstalled, when low-power field operation is planned.
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Check our web site for availability of this option.
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