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K3S Frequently Asked Questions
Ver. C 5/12/15
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Q: What are the new features of the Elecraft K3S?
A: The K3S is Elecraft’s second-generation, software-defined superhet transceiver (SDR).
We’ve upgraded nearly every subsystem, improving performance and adding many new
features. Here’s a quick overview:
Ultra-low-noise synthesizer
Unequaled strong-signal receive performance; exceptional transmit
signal purity.
Built-in equivalent of Elecraft’s PR6-10 low-noise amplifier (LNA)
for weak-signal work on 12, 10, and 6 m. Preamp 2 is part of the
KXV3B module (now included as a standard feature). The
KXV3B also provides RX antenna in/out jacks, transverter in/out
jacks, and a buffered IF output for use with our P3 panadapter.
Multiple attenuation levels
Attenuation levels of 0, 5, 10, and 15 dB; selectable per-band.
Dual computer ports (USB
and RS232)
In addition to the legacy RS232 port, the new USB port integrates
computer remote control and line-level audio. This eliminates the
need for a sound card or external converters and their associated
cables. Supports Windows, Linux and Apple platforms.
KAT3A option now
includes bypass relay
Lower loss on bands where matched antennas are used.
Redesigned speaker
amplifier
Stereo speaker outputs now have lower total harmonic distortion
(THD) for reduced listening fatigue.
Fast transmit/receive
switching
High-accuracy CW transmit timing—even at high code speeds with
SPLIT, RIT, and XIT in use.
Extended coverage includes
630 and 2200 meter bands
When used with the KBPF3A option, receiver covers 630 m (472
kHz), and 2200 m (137 kHz), tuning as low as 100 kHz. Transmit
output of 0.5-1.0 mW on 630 m (for use with an external amplifier).
New LCD bezel; soft-touch VFO A knob with improved grip.