HINTS
and
TIPS
for the Radio Amateur
 FREE


PRACTICAL

 IDEAS

 FOR

 THE

 QRP

 BUILDER

 AND

 OPERATOR


   >>>> Simple Capacitor Measuring Method (K8JWR)
  >>>> Simple Inductance Measuring Method
  >>>> Good Tip Cleaner For Your Soldering Iron
  >>>> Wire Twister For Bifilar Toroid Windings
  >>>> RF Impedance Bridge With LED Indicator
  >>>> RF Probe For DVM or VTVM
  >>>> Terminator for Radial or Counterpoise wires
  >>>> Designing With A Calibrated Capacitor
  >>>> Determining LED Polarity
  >>>> Using Cheap Watch Crystals (K7HKL)
  >>>> Using Air-Core Toroids (VU3ICQ)
  >>>> LED Antenna Current Indicator
  >>>> PVC Pipe Cap Microphone Housing
  >>>> Brass Screw PTO (from WA6OTP)
  >>>> Discrete Component Audio Amplifier
  >>>> Bi-directional Amplifier Circuits
  >>>> The Dual-base Transistor (E, B1, B2, C)
  >>>> Crystal Oscillator Pinout
  >>>> Toroid Coupling To Single Turn RX Loops
  >>>> Doing 1/x Calculations On Cheap Calculators
  >>>> Testing Transistors for DC Gain (K7HKL)
  >>>> Easy Inductance Meter (Dick Capel)
  >>>> Symetrical Output From A 555 Timer Chip
  >>>> Variable Width Pulses From A 555 Timer Chip
  >>>>   Add RIT To That QRP Rig (Jim - K8IQY)
  >>>>   Add RIT To That QRP Rig (Larry - W1HUE)
  >>>>   CW Sidetone Circuit
  >>>>  SSB & CW Filters For Rx
  >>>>  Brass Screw PTO Mechanicals (K7HKL)
  >>>>  Simple Mechanical Layout for PTO (K7HKL)
  >>>>  Audio Phase Shifter
  >>>>  RF Phase Shifter
  >>>>  Diode Balanced Mixer
  >>>>  Diode Balanced Modulator
  >>>>  FET DC Voltmeter (0.5V, 5V, 50V)
  >>>>  Simple FET DC Voltmeter (0.5, 5, 50V)
  >>>>  HF Sweep Generator (K7HKL)
  >>>>  Stabilized Signal Generator (.1 to 80 MHz)
  >>>>  My Pixie Xcvr (K7HKL)
  >>>>  Micro-80 (pre-Pixie) Xcvr [RV3GM]
  >>>>  LED Bar Graph Display (K7HKL)
  >>>>  AF-Derived AGC and S-Meter (PA0HUY)
  >>>>  NE-602 Oscillator Circuits
  >>>>  Simple BJT Morse Keyer
  >>>>  TDA-2002 8-Watt AF Amp
  >>>>  PC Sound Card Mike Interface
  >>>>  LED Field Strength Meter (K7HKL)
  >>>>  LED AntennaScope (K7HKL)
  >>>>  2M 5/4 Wave Antenna
  >>>>  LED SWR Bridge (G3YCC & G0WQR)
  >>>>  Crystal & Inductor Tester (WK3XY)
  >>>>  RF Pre-Amp (G3AJP)
  >>>>  Metal Locator
  >>>>  Junk box Mixer (VK2ZAY)
  >>>>  Fixed Regen AM Receiver
  >>>>  DC RX [VFO runs at 1/2 RX] (YU2HL)
  >>>>  Transistor Evaluator (K7HKL)
  >>>>  BJT CW Filter Circuit
  >>>>  G3MY Stable VFO Circuit
  >>>>  Converting AM Rx to CW & SSB
  >>>>  555 Variable Duty Cycle Timer
  >>>>  L-Match ATU
  >>>>  FET Dip Meter (73 Mag. Jan 92, P-12)
  >>>>  Low-voltage, Hi-gain, AF Amplifier
  >>>>  Shift Register LCD Driver Circuit
  >>>>  TDR Signal Source
  >>>>  Self-powered Regen Rx
  >>>>  Headphone Amp for Lo-Z Phones
  >>>>  The Wifi Opportunity for Hams
>>>>  Small Loop Antenna Design & Construction
FORMULA FOR CALCULATIONS
  >>>>  Reference For E,I,R,W Calculations
  >>>>  Reference For F, C, L Calculations
  >>>>  Reference For DB & SWR Calculations
  >>>> 


DATA REFERENCE:
  >>>>  Standard Mathematical Values
  >>>>  Pinout for Crystal Oscillators
  >>>> ATX Computer PS Connector
  >>>> PC-AT PS Connector pinout
  >>>> PC Keyboard Connectors
  >>>> PC Joystick Connector
  >>>> EIA Cable Connector Pinouts
  >>>>
  >>>> PC Sound Card Microphone Interface
  >>>> PC Video Cable Pinout
  >>>> PS-2 Keyboard or Mouse Pinout
  >>>> PC USB CONNECTORS PINOUT
    >>>> Kenwood TS-520 Mike Connector
  >>>> PVC Pipe Measurements (USA)
  >>>> Copper Pipe Measurements (USA)
  >>>> Iron Pipe Measurements (USA)
  >>>>
<== Home Page
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