A Note to K3S Owners
On behalf of our entire design team, we’d like to thank you for choosing the Elecraft K3S transceiver.
The K3S is the same size and weight (~9 lbs.) as its predecessor, the K3. Yet nearly all internal modules have
been redesigned, providing enhanced performance and many new features. These include:
• Ultra low-noise synthesizer for exceptional receiver dynamic range and transmit signal purity
• USB port for convenient, single-cable computer control and digital audio interface (an RS232 port is
provided, as well, for station compatibility and P3 interfacing); pg. 18
• Built-in second preamp for weak-signal work on 12, 10, and 6 meters; pg. 25
• Three attenuator settings (5/10/15 dB) to optimize performance in strong-signal conditions; pg. 25
• Improved audio circuitry for clean, low-distortion stereo speaker output; pg. 80
• Low-loss ATU option with a true bypass relay, maximizing efficiency with every antenna
• Accurate high-speed CW transmit timing, even when using SPLIT, RIT, and XIT
• 100-550 kHz coverage, including low-level 630-meter (472 kHz) transmit; pg. 41
Exterior changes include all-stainless-steel hardware, new display bezel, and a soft-touch VFO tuning knob.
With its unique combination of compact size and world-class performance, your new K3S can handle the most
demanding operating situations, whether you’re at home or halfway around the world.
73,
Wayne, N6KR
Eric, WA6HHQ
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