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Kit Building Revisited - the Elecraft Way QCWA Chapter 70 September 18, 2007 Bob MacKenzie VA3RKM Mike Babineau VE3WMB

Kit Building Revisited - the Elecraft Way QCWA Chapter 70 September 18, 2007 Bob MacKenzie VA3RKM Mike Babineau VE3WMB Martin Gillen VA3SIE. Eric, WA6HHQ Wayne, N6KR. Who Are We?. Both hams since ‘71 Wayne (N6KR, ex WN6HQH) QRP Design Fanatic (Sierra, NorCal40, SST…)

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Kit Building Revisited - the Elecraft Way QCWA Chapter 70 September 18, 2007 Bob MacKenzie VA3RKM Mike Babineau VE3WMB

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  1. Kit Building Revisited - the Elecraft Way QCWA Chapter 70 September 18, 2007Bob MacKenzie VA3RKMMike Babineau VE3WMBMartin Gillen VA3SIE

  2. Eric, WA6HHQ Wayne, N6KR

  3. Who Are We? • Both hams since ‘71 • Wayne (N6KR, ex WN6HQH) • QRP Design Fanatic (Sierra, NorCal40, SST…) • B.S. Cognitive Science, UCSD • Silicon Valley Guy (Firmware / EE / UI) • Eric (WA6HHQ) • Kamikaze QRP DX’er (NorCal40 DXCC) • B. S. Electronics, Yale • Startup Addict: Mountain Comp., Verisys, Elecraft

  4. Goals….. • Re-birth of the ‘Heathkit’ Experience • Building and using your rig is Fun! (‘Mojo’) • Create a worldwide community of Elecraft builders to share their experiences. • Encourage portable HF operation. • Bring back the excitement of building, modifying, (breaking), fixing and operating with equipment you have built yourself!

  5. Comprehensive Assembly Manual You'll find the manual easy to follow, with step-by-step assembly, clear illustrations and photos, and modular checkout of each major section. There's also a detailed theory of operation section, as well as a complete troubleshooting guide. Strong Customer Support Our technical support via telephone and the Internet will get your Elecraft up and running quickly. On-line manuals, frequently asked questions (FAQ), application notes and our user group e-mail list make building a great experience.

  6. K1 Four or Two-Band HF Transceiver

  7. K1 – Cover Off

  8. K1 – Side View (Panels Removed)

  9. KAT1 ATU Mounted above K1 Filter Board

  10. The K2 CW/SSB HF Transceiver

  11. K2 Advanced Features • CW Full Break-in; Diode Switched TX/RX • Programmable Memory Keyer (9 memories) • ‘Hunt and Pounce’ Band Search Mode • 120ma Low Current RX Mode • Built in Test: Freq. Counter, Volt/Amp Meters • Self Calibration Firmware

  12. The K2Transceiver • Key Fundamentals: • Good RX Performance • No wires construction; Modular, upgradeable • Down conversion to low IF (4.915MHz) • Best trade-off of cost / complexity • IF derived AGC, Variable B/W CW crystal filter

  13. K2 SSB Option 160M / 2nd Ant Option Audio Filter/ Real time Clock

  14. K2 Block Diagram

  15. Aims: Portability Economy Low current drain Pride High performance

  16. Performance features and trade-offs • Where does noise come from? • - many parts, many circuits (artefacts, birdies, etc.) • - reduce parts and circuits and reduce noise, current drain • Single-band design using latching relays • - ham-bands only, SSB, RTTY and CW (160-10m) • Single-conversion • - tuning direction reversed above 17m • Sleep-mode when possible, periodic table updating • - not as responsive • (4) Simplified circuitry: No IF shift

  17. Builder and owner assistance Built-in test equipment RF probe, DC voltage probe, frequency counter Alignment and calibration features Self-calibrating PLL, calibrate oscillator by WWV, align by ear, measure power by DMM voltage, align SSB balance by S-meter, align filters by Spectrogram audio software Owner Support Loyal, large and savvy User’s Group Builders for hire Advice and service from factory

  18. How to contact www.elecraft.com sales@elecraft.com

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