285 TechConnect Radio Club — NAØTC

For presentation documents from the TechFests, please use the TechFests area.

• January: Microcontrollers and Amateur Radio
• February: FT8 -- Down the Rabbit Hole
• March: Boulder County Amateur Radio Emergency Services BCARES (YouTube)
• April:
  • Winlink Basics
  • NA0TC Technical Presentation: Winlink
• June:
  • HF Propagation
  • Weather Balloons / Ham Radio in Space
• October:
  • Radio Operations for Balloons
  • Radio Operations for Balloons (YouTube)
• November TechFest: TechFests

• February: SWR and Reflected Power, SWR and Reflected Power
• March:
  • 6M - The Magic Band
  • Presentation (YouTube)
• April:
  • SOTA, POTA, QRP Operation
  • Presentation (YouTube)
• June:
  • The Magic Behind FT8
  • Presentation (YouTube)
• August
  • Working on Older Equipment with High Voltage Power Supplies
  • Presentation (YouTube)
• October
  • Ham Radio Digital Hotspots
  • Hotspot Presentation (YouTube)
  • Ham Radio Recollections (YouTube)

• February: NanoVNA Slides
• September: Ham Station Grounding
• October: Amateur Radio and Space Weather
• November: RF Safety and Station Evaluation

• October: Low-band Active Receive Antennas
• November: Introduction to Winlink, Vara FM 4.0 Features

• February: High Power Magnetic Loop Antennas (PDF); Bill – NØCU
• March: EM Waves (PDF); Bill – NØCU
• April: Morse Code, Keys, and Accessories – Links from presentation; Jed – KDØYMG
• June: HF Signal Propogation (PDF); Bill – NØCU

• February: Receiver Sensitivity and S-meters; Bill – NØCU
• April: Receiver Front-End Protection (PDF); Bill – NØCU
• August: FT8 / MSK144; Bill - WTØDX
• October: Reducing Common-Mode Feedline Current; Phil – KIØGL

• January: End-fed Half-wave Antennas; Bill - NØCU
• February: Analysis of a Failure; Larry - KØNA
• March: Transmission Lines as Impedance Transformers; Bill - NØCU
• June: Relays (1), Relays (2); Bill - NØCU and Larry - KØNA
• August: Baluns & Common Mode Chokes, Part 1; Bill - NØCU
• September: Baluns & Common Mode Chokes, Part 2; Bill - NØCU

• February: Emergency Power for Ham Radio; Mike - WØMJH
• August: Instrumentation for Ham Radio; Steve - KDØMFT
• September: 43-foot Verticals; Bill - NØCU

• February: Transceiver Performance; Rob - NCØB
• March: When are SWR and Reflected Power Important?; Bill - NØCU
• April: DIY Meter Test Kit; Craig - WØLIC and Jim - KCØRPS
• September: EMP Presentation and EMP Q&A; Dwight Eckert

• March:
  • MFJ 259/B Operation and Calibration - Updated; Bill - NØCU
  • ESR Meter Presentation; Bill - NØCU, (4 K)
  • Amateur Radio Satellites; Jordan - KDØMLV and Skyler - KDØWHB
• May: Instrumentation for Amateur Radio; Stephen - KDØMFT (1.3 MB)
• June:
  • Battery Monitor; Jim - KCØRPS, and Craig - WØLIC
  • Battery LA Voltage v Density; Robert - KDØFSR
• August: Club Project Ideas; Jim - KCØRPS, and Craig - WØLIC
• September: JT-65 and JT9; Mark - WØQL. Installation instructions (Mark's website)
• October:
  • Battery Analyzer Constructions Hints, rev.11-2-14; Jim - KCØRPS and Craig - WØLIC (Also see our Technical Projects)
  • JT-65 Hardware and Digital Interface; Bill - NØCU

• January: EZNEC comparing antennas; Bill - NØCU
• February: EZNEC comparing antennas, part 2; Bill - NØCU
• March:
  • EZNEC comparing antennas, part 3; Bill - NØCU
  • PCB Talk 1; Frank - KØFEI
• April:
  • EZNEC comparing antennas, part 4; Bill = NØCU
  • PCB Talk 2; Frank - KØFEI
• May: Three Terminal Regulator and Overvoltage Protection; Bill - NØCU
• August: Why Antennas Radiate; Frank - KØFEI
• October: SOTA End-Fed Antenna; Frank - KØFEI

• January:
  • Dummy Load; Dale - ACØST
  • True Sinewave Inverter; Dale - ACØST
• May: Home Brew SWR Meter; Bill - NØCU
• June: AM Antenna Computer Modeling; Chris - W5WCA. ©2008-2012 Crawford Broadcasting Company - reproduced by permission.
• August: Zoning Violation; Larry - KØNA
• September: Electromagnetic Pulse (EMP); Frank - KØFEI

• February: Station Grounding; Bill - NØCU
• March: Shunt Fed Towers; Larry - KØNA
• May: Remote Station; Jim - KCØRPS
• August: DSP or QSP; Glenn - NØGNR
• September:
  • Measuring RF Parameters of Networks; Bill - NØCU
  • Solve the Problem; - Bill - NØCU
• October:Open Street Map and Depiction; Russell Deffner

• May: Equalization; Bill - NØCU
• August: PIC Microprocessor; Frank - KØFEI

• August:
  • EOSS Slideshow; Jim - KCØRPS and George - WØNFW
  • EOSS Balloon Burst; Jim - KCØRPS and George - WØNFW
  • EOSS 140; Jim - KCØRPS and George - WØNFW
  • EOSS GPSL 2009 EOSS 144; Jim - KCØRPS and George - WØNFW

• January: Antenna Overview; Larry - KØNA
• February: Antenna Modeling; Larry - KØNA
• March: Vertical Dipole Array; Roger - KØYY

• June
  • Digital Intro; Jim - KAØNZZ
    • AMTOR
    • PACKET
    • RTTY
  • The Digital Ham Radio Revolution; Jim - KAØNZZ
  • Digi Sounds - Ever wonder what the various digital modes sound like? Jim, KAØNZZ

• The Big Step Up To 1.5KW or Buying a High Power Amplifier; Bill - NØCU
• The G5RV Antenna Revisted; L. B. Cebik - W4RNL
• Measuring Receiver Specifications; Steve - AIØW (HamCon 2009)
• NVIS; Steve - AIØW
• Standby Power Y2K; Robert - KDØFSR