Your Host

Kirt Blattenberger
... single-handedly
redefining what
an engineering
website should be.

Carpe Diem!
(Seize the Day!)

5CCG (5th MOB):
My USAF radar shop

Page of the Day Archive - 2009

• 11/30/2009 -
• 11/29/2009 - RF Cafe  Quiz #4: General RF Electronics
• 11/28/2009 - Webinar Archive - 2009
• 11/27/2009 - Gray Market (Counterfeit) Components
• 11/26/2009 - Waveguide Component Vendors
• 11/25/2009 - Engineering & Science Notable Quote Archive #14
• 11/24/2009 - Transmission Link Planning Tool for Excel
• 11/23/2009 - Oscillator / VCO / Synthesizer Design Books
• 11/22/2009 - Solder Properties
• 11/20/2009 - Financial Investing - Technology
• 11/19/2009 - Inductance / Inductor Calculator
• 11/18/2009 - Cool Video Archive #5
• 11/17/2009 - Filter Design Resources
• 11/16/2009 - Technical Entrepreneurial Resources
• 11/15/2009 - Transformer Design References
• 11/14/2009 - Job Search & Career Resources
• 11/13/2009 - Electronic Warfare Resources
• 11/12/2009 - Inductor Design References
• 11/11/2009 -  U.S. Defense & Homeland Security
• 11/10/2009 - Engineering & Science Mistakes & Myths
• 11/9/2009 - Information Sources for Leonardo da Vinci
• 11/8/2009 - Magazine Article Archive - 2007
• 11/7/2009 - College Engineering Department Newsletters
• 11/6/2009 - Disruptive Innovation / Technology Resources
• 11/5/2009 - RF Cafe  Quiz #16 Antennas
• 11/4/2009 - RF Cafe Job Board
• 11/3/2009 - Cell Phones Cause Accidents
• 11/2/2009 - Transmission Link Planning Tool for Excel
• 11/1/2009 - RF Stencils for Visio & Word
• 10/31/2009 - RF Cafe Engineering Poll Archive
• 10/30/2009 - FCC Part 15 Radio Frequency Devices
• 10/29/2009 - RF & Wireless Engineering Event Calendar
• 10/28/2009 - Slide Rule & Calculator Museum
• 10/27/2009 - Engineering & Science Notable Quote Archive #10
• 10/26/2009 - RF / Operational / Log Video Amplifier Suppliers
• 10/25/2009 - You Noodle's Predicted Valuation for RF Cafe in 2010
• 10/24/2009 - Translate RF Cafe to Your Native Language
• 10/23/2009 - RF Cafe Engineering & Science Forums
• 10/22/2009 - Cool Pic Archive - 1
• 10/21/2009 - Broadcast Engineering Resources
• 10/20/2009 - RF Cafe  Quiz #6: Wireless Communications Fundamentals
• 10/19/2009 - Matching Network Designer for Excel
• 10/18/2009 - Gyroscopic Precession and Nutation
• 10/17/2009 - Military Service Photos of RF Cafe Visitors
• 10/16/2009 - RF Cafe Quiz #11 Famous Inventors & Scientists
• 10/15/2009 - Technical Services & Consulting
• 10/14/2009 - RF Cafe Historical Logo Collection
• 10/13/2009 - Legal Services Websites
• 10/12/2009 - Engineering Poll Archive - 2007
• 10/11/2009 - Company Slogans
• 10/10/2009 - Engineering & Science Notable Quote Archive #6
• 10/9/2009 - RF Cafe Giveaways
• 10/8/2009 - Resistance Conversions
• 10/7/2009 - Points of Inflection
• 10/6/2009 - Materials Properties
• 10/5/2009 - mW-to-dBm Power Conversion
• 10/4/2009 - Series RLC Combinations
• 10/3/2009 - Attenuator Design Data
• 10/2/2009 - Parallel RLC Combinations
• 10/1/2009 - Noise Power & Voltage
• 9/30/2009 - Matrix Definitions
• 9/29/2009 - The History of Electrical Communications
• 9/28/2009 - Properties of Solvents Used for Electronics
• 9/27/2009 - SPURS Software - RF Design Magazine Software Contest Winner
• 9/26/2009 - General Constants
• 9/25/2009 - Snow, Sleet, Hail, & Freezing Rain Facts
• 9/24/2009 - Metric Tap & Drill Chart
• 9/23/2009 - Rain (Rainfall) Facts
• 9/22/2009 - Sound Power Levels
• 9/21/2009 - Velocity of Sound in Various Media
• 9/20/2009 - Alternative Office Suites (Free & Otherwise)
• 9/19/2009 - Radar Equation, 2-Way
• 9/18/2009 - Einstein's Theory of Special Relativity
• 9/17/2009 - Thermocouples
• 9/16/2009 - Military Specifications (DoDSSP)
• 9/15/2009 - Velocity of Sound in Dry Air
• 9/14/2009 - Volume Conversions
• 9/13/2009 - Work - Energy - Heat Conversions
• 9/12/2009 - Lumped / Distributed Transmission Line Element Conversions
• 9/11/2009 - Wood Density and Heat of Combustion Values
• 9/10/2009 - Resistor Markings: MIL-PRF-55342
• 9/9/2009 - Standard Capacitor Values
• 9/8/2009 - Helical Resonator Design for Filters
• 9/7/2009 - Norton Equivalent Circuit Theorem
• 9/6/2009 - Origin of the Name "HAM" for Amateur Radio Operators
• 9/5/2009 - Parallel Port Pin-Out
• 9/4/2009 - Fourier Series of Periodic Functions
• 9/3/2009 - Voltage Potential Conversions
• 9/2/2009 - 2-Way (Radar) Path Loss Calculator
• 9/1/2009 - Properties of Modes in a Rectangular Waveguide
• 8/31/2009 - Cordless Electric Flight Motors
• 8/30/2009 - Signal Propagation Time
• 8/29/2009 - Pulse Definition
• 8/28/2009 - 1st-Generation UHF Standards for RFID
• 8/27/2009 - Thévénin Equivalent Circuit
• 8/26/2009 - Heat Index Chart - Relative Humidity vs. Air Temperature
• 8/25/2009 - Interesting Facts
• 8/24/2009 - Morse Code
• 8/23/2009 - A Graphical Approach to Mixer Spurious Analysis
• 8/22/2009 - Home Computers Circa 1981
• 8/21/2009 - RF Connectors, Adapters, Sockets, & Terminal Blocks
• 8/20/2009 - Military & Industry Standard Documents
• 8/19/2009 - GSM Cordless Telephony System Broadcast Channel (CTSBCH) Timeslot Assignment
• 8/18/2009 - Technical, Science, & Engineering Museums
• 8/17/2009 - Fixed Pi and T Attenuator Calculator
• 8/16/2009 - Amplifier Design Resources
• 8/15/2009 - The Engineer's Dilemma
• 8/14/2009 - Electrical / Electronics Conversions, Formulas & References
• 8/13/2009 - VSWR - Return Loss - Γ Conversions
• 8/12/2009 - 
• 8/11/2009 - Cascaded Noise Figure
• 8/10/2009 -
• 8/9/2009 - [Humorous] Definitions of Some Common Amateur Radio Terms
• 8/8/2009 - Top 10 Reasons Why e is Inferior to pi
• 8/7/2009 - The Solar System
• 8/6/2009 - Psychrometric Chart
• 8/5/2009 - Apothecary, Avoirdupois & Unusual Conversions
• 8/4/2009 - Pendulum-Driven Mechanical Clock Escapement
• 8/3/2009 - Divergence of a Vector
• 8/2/2009 - Project "Butthead Astronomer"
• 8/1/2009 - Einstein's Theory of Special Relativity
• 7/31/2009 - Kirt's Cogitations™ #244 - Science in Music
• 7/30/2009 - Gaussian Lowpass Filter Poles (to 6 dB & to 12 dB)
• 7/29/2009 - Laws of Thermodynamics
• 7/28/2009 - Drill Sizes - Numbered
• 7/27/2009 - Miniature Lamp Guide
• 7/26/2009 - U.S. Radio Frequency Allocations - 30 MHz to 300 GHz
• 7/25/2009 - Technical Abbreviations and Acronyms
• 7/24/2009 - Gradient of a Vector
• 7/23/2009 - GSM Handset Power Amplifier Control Loop Design
• 7/22/2009 -  Matrix Algebra
• 7/21/2009 - Monolithic Ceramic Block Combline Bandpass Filters Design
• 7/20/2009 - The Noble Art of De-Coupling
• 7/19/2009 - Who Invented Radar?
• 7/18/2009 - Fuse Specifications
• 7/17/2009 - Engineering & Technical Search
• 7/16/2009 - Microstrip Substrate Equations
• 7/15/2009 - Lightning Protection & Safety Websites
• 7/14/2009 - Karnaugh Maps / Tables
• 7/13/2009 - Passive Intermodulation (PIM)
• 7/12/2009 -  Musical Scales
• 7/11/2009 - Series Expansions
• 7/10/2009 - Hyperbolic Trigonometric Identities
• 7/9/2009 - Job Information Resources
• 7/8/2009 - Curl of a Vector
• 7/7/2009 - LaPlace Transform Pairs
• 7/6/2009 - Undersampling of Modulated Signals
• 7/5/2009 - Triboelectric Series
• 7/4/2009 - Z-Transform Properties
• 7/3/2009 - Wireless Communications Specifications
• 7/2/2009 - Directional Coupler Calculator
• 7/1/2009 - Inverse Hyperbolic Trigonometric Identities
• 6/30/2009 - Waveguide & Flange Selection Guide
• 6/29/2009 - Relative Humidity / Dew Point
• 6/28/2009 - GSM Timeslot & Frequency Specifications
• 6/27/2009 - Ultrasonic Frequency Spectrum
• 6/26/2009 - Pressure - Temperature (P-T) Diagram
• 6/25/2009 -  Mt. Palomar Telescope Pyrex Mirror Blank Ad
• 6/24/2009 - Trigonometric Laws
• 6/23/2009 - Windchill Chart - Wind Speed vs. Air Temperature
• 6/22/2009 - Mechanical Units - Metric & SAE
• 6/21/2009 - Density of Some Common Building Materials
• 6/20/2009 - C.I.E. Chromaticity Diagram
• 6/19/2009 - Length Units Conversions
• 6/18/2009 - GSM Mobile Station (MS) Classes for Multislot Capability
• 6/17/2009 - Electrochemical Potentials
• 6/16/2009 - S-, H-, Y-, Z-, ABCD- Parameter Conversions
• 6/15/2009 - Solder Properties
• 6/14/2009 - IEEE 802.11a/b/g WLAN Spectral Masks
• 6/13/2009 - Geometry - Polygons
• 6/12/2009 - Uncertainties
• 6/11/2009 - Signal-to-Noise Ratio (SNR)
• 6/9/2009 - Magnetic Field Conversions
• 6/8/2009 - Kirchhoff's Voltage & Current Laws
• 6/7/2009 - Drill Sizes - Lettered
• 6/6/2009 - Leonardo da Vinci Resources
• 6/5/2009 -  Mil-Spec Capacitor Families
• 6/4/2009 - Partial Fractions
• 6/3/2009 - Geometry - Arcs & Circles
• 6/2/2009 - Phonetic Alphabets
• 6/1/2009 - Right-Hand Rule for Magnetic Field by Current in a Wire
• 5/31/2009 - Selected European Radio Frequency Allocations 30 MHz to 300 GHz
• 5/30/2009 - Insulation & Jacketing Materials Properties
• 5/29/2009 - Copper Wire Properties & Gauge Conversions
• 5/28/2009 -  Frequency Bands 
• 5/27/2009 - Electric Field Conversions
• 5/26/2009 - 1-Way (Radio) Path Loss Calculator
• 5/25/2009 - Maxwell's Equations
• 5/22/2009 - Spectral Inversion
• 5/21/2009 - Video Resumes or Curriculum Vitae (CV)
• 5/20/2009 - Wireless Link Budget
• 5/19/2009 - Rectangular & Circular Waveguide: Equations & Fields
• 5/18/2009 - Trinity Site Atom Bomb Test Explosion Photographs
• 5/16/2009 - VSWR Reduction by Matched Attenuator
• 5/15/2009 - Laws of Logarithms
• 5/14/2009 - Visible Light - Wavelength, Frequency, Color Compatibility
• 5/13/2009 - Indefinite Integrals of Form Sqrt (a² + x²)
• 5/12/2009 - Operational Amplifiers (Opamps)
• 5/11/2009 - VSWR - Return Loss - Γ Conversions
• 5/10/2009 - Power vs. Voltage in a 50 Ω System
• 5/9/2009 - Properties of RF Semiconductors
•  5/5/2009 - Flip-Flop Truth Tables
• 5/4/2009 - Electrocution of the Human Body
• 5/3/2009 - Fuse Drawings
• 5/2/2009 - The Carnot Cycle
• 5/1/2009 - Beaufort Wind Scale
• 4/30/2009 - ASCII Character Set
• 4/29/2009 - Arrhenius Lifetime Acceleration of an Integrated Circuit
• 4/28/2009 - Gaussian Lowpass Filter Prototype Element Values (to 6 dB & to 12 dB)
• 4/27/2009 - Indefinite Integrals of the Form a+bx
• 4/26/2009 - Effective Isotropic Radiated Power (EIRP)
• 4/25/2009 - DTMF Frequencies
• 4/24/2009 - Capacitor Dielectrics & Descriptions
• 4/23/2009 - Derivation of Phase Angle Error Due to VSWR Mismatch
• 4/22/2009 - Transient (Damped) Responses
• 4/21/2009 - Free Space Path Loss - Friis Equation
• 4/20/2009 - Properties of Modes in a Circular Waveguide
• 4/19/2009 - Standard Aluminum Tubing Sizes
• 4/18/2009 - Chebyshev Lowpass Filter Poles
• 4/17/2009 - Absorption and Velocity of Sound in Still Air
• 4/16/2009 - Impedance and Admittance Formulas for RLC Combinations
• 4/15/2009 - Noise Power & Voltage
• 4/14/2009 - Chebyshev Filter Prototype Element Values
• 4/13/2009 - Quartz Crystal Characteristic Modes of Vibration
• 4/12/2009 - Box and Whisker Plot
• 4/11/2009 - Averages
• 4/10/2009 - Capacitor Dielectric Properties
• 4/9/2009 - Smith Chart™ Artwork
• 4/8/2009 - Inductors & Inductance Calculations
• 4/7/2009 - Rebuilding an RCA 86T Antique Radio
• 4/6/2009 - RF Cafe Job Board
• 4/5/2009 - The Galvanic Series
• 4/4/2009 - Electricity - Basic Navy Training Courses
• 4/3/2009 - The History of 50 Ω
• 4/2/2009 - Datasheet Resources
• 4/1/2009 - Engineering & Science Magazine Websites
• 3/31/2009 - Bluetooth Resources
• 3/29/2009 - RF Cafe  Quiz #1 - General RF Knowledge
• 3/28/2009 - Engineering & Scientific Software - System Simulators
• 3/27/2009 - Immigration Classifications and Visa Categories
• 3/26/2009 - Tin Whisker Resources
• 3/25/2009 - Bond Wire Properties
• 3/24/2009 - Smith Chart for Excel (free)
• 3/23/2009 - Fixed Pi and Tee Attenuators - Equations
• 3/22/2009 - The RF Cafe Geocaching Challenge
• 3/21/2009 - Engineering & Science Humor
• 3/20/2009 - RF Cafe Forums 
• 3/19/2009 - Dielectric Constant, Strength, & Loss Tangent
• 3/18/2009 - Fourier Series Identities