RF CIRCUITS / CIRCUITOS RF
- Capacitance Meter
- Field Strength Meter LM324
- HF Q-meter VK5JST
- RF Power Calibrator
- VHF Wattmeter
- LED RF Power Meter - N9ZIA
- Return Loss Bridge
- Return Loss Bridge with AD8307
- HF SWR Bridge
- Grid Dip Meter 2 MHz - 20 MHz
- Field Strength Meter 3 Levels
- BandScope for 2m Band
- Lightening Detector
- 3-Digits Dip Meter
- Calibrated Noise Source
- Capacitance Meter using DVM
- Inductance Meter using DVM
- High-Impedance RF Probe
- DC to 500 MHz Log Detector/Amplifier - DJ1ES
- L-C-R Bridge - G3BIK
- Phase Meter
- Inductance Meter - VK5BR
- L/C Meter - IZ7ATH
- FM Deviation Meter
- Flicker-Noise Generator - Wenzel
- 2.4 GHz mW Power Meter - F1HDD
- Simple Crystal Tester - F5JTZ
- Inductance Meter - N5ESE
- Magnetic Field Meter
- RF dBu Meter
- Two chips LED Frequency Counter - PA2OHH
- 0-99 kHz Frequency Counter - G0UPL
- LED SWR/Power meter - PY2MG
- Electro-Magnetic Waves Detector
- Long-Wave Lightening Detector
- Cable Reflection Tester - N9ZIA
- TDR Circuit and Signals - T.Engdhal
- 1 MHz to 1 GHz LED Absorption Meter - GW1TDV
- S9 HF Signal Generator
- Audio Filter Analyzer
- True Linear RF Power Detector
- Grid Dip Meter 3.5 MHz to 110 MHz
- 1.6 MHz to 150 MHz Modulated Grid-Dip Meter
- Five Grid-Dip Meters
- 30 kHz to 30 MHz Sinusoidal Signal Generator
- Capacimeter using NE555
- 0-1uF Capacimeter
- Coil Short-Circuit Detector
- Fonometer
- All-BJTs L-C Meter
- VHF FM Signal Generator
- Sweeper for 455 kHz IF
- 500 kHz to 3 GHz LED Field-Strength Meter
- 2xBJT Capacimeter
- Varactor Capacimeter
- Automatic VSWR and Power Meter - W0INK
- RF Sweeper - VK2ZAY
- Very Low Frequency Survey Probe - VK2ZAY
- 1 MHz to 30 MHz Noise Source - G1HSM
- Capacimeter with 2xNE555 - WA8MCQ
- Dual-LED SWR Indicator for QRP
- HF In-Line Return Loss and Power Meter - N2PK
- Spectrum Analyzer on the Oscilloscope
- Grid-Dip Meter with Digital Display
- Marker Generator - KB1MW
- Micro-Wattmeter - W7DB
- Sweep Generator - NA5N
- Simple Function Generator
- Optical SWR meter
- Glitch Detector
- Satellite Finder
- Electrostatic Detector
- 1nF to 100uF Capacimeter
- 10 Hz to100 kHz Frequency-to-Voltage Converter
- 100 kHz to 30 MHz RF Probe with Detector Monitor
- 100 MHz Oscilloscope Probe
- L/C meter multirange
- VHF LC Resonance Indicator
- Harmonics Detector
- Lighting Storm Monitor
- Ultra Simple CRT Oscilloscope
- Sudden Ionospheric Disturbance Receiver
- 7-digits Frequency Counter - VU2IYI
- Accurate Capacitance Meter with PLL
- Precision Two-Tone RF Generator for IMD Test - KI6QP
- Quartz Tester
- 10 Hz to 100 kHz Sinusoidal/Rectangle Generator - OE1MSA
- Two-Tone IMD Test with Crystal Oscillators
- Wobbulator 1 Hz - 40 MHz - DC2MR
- 1 MHz to 42 MHz SuperDipmeter - DK1HE/DL2FI
- HF-VHF RF Level Meter with Monitor - DL9AH
- Calibration Spectrum Generator - DL3XW
- 2pF-1uF Capacimeter - DC6FC
- 70 MHz to 1350 MHz Wave Absorption meter - DJ2HF
- VHF-UHF Noise Source - DB2GM
- 29 MHz to 460 MHz Dual-FET Grid-DIP Oscillator
- RF Bridge for Impedance Measurements
- RF Noise Bridge
- Q-meter - VK5BR
- Audio Generator 50 Hz to 36 kHz
- EM-Field Intensity Meter - WA7JHZ
- 1 MHz to 30 MHz Quartz Tester - DK4KU
- Peak Reading RF Power Meter - W0IVJ
- 0 - 500 MHz Field Strength Meter - DK6UU
- QRP SWR Meter - HA5KU
- Crystal Timebase
- Phase Meter - K1FK
- 10 kHz to10 GHz LED-Bargraph Power Meter - W1GHZ
- Antenna Ratio Meter - W1GHZ
- 300 MHz Bandwidth Noise Generator
- Function Generator - WA2IKL
- Splatter Meter - W1BG
- 40 kHz to 200 MHz RF Voltmeter - WA6NIL
- Voltage to Frequency Converter
- 3 MHz to 22 MHz Signal Generator - K1BKT
- 140 MHz to 460 MHz Wavemeter - K1CLL
- Crystal-Controlled Audio Generator - KB4ZGC
- FM Deviation Meter - W3QVZ
- Very Simple Oscilloscope - K8JWR
- 3-Digit Frequency Counter
- Digital Capacimeter
- 3 MHz to 45 MHz Signal Generator
- 15 Hz to 2 MHz Ferranti-Wien Bridge Generator
- 455 kHz Wobbulator
- Low Power SWR Meter - DL2EWN
- Short-Wave Noise Generator
- Wideband Temperature Independent Noise Source
- 0 to 60 MHz Spectrum Analyzer - WB5IPM
- 1.6 MHz to 32 MHz Signal Generator - W4LJD
- 100 Hz to 10 kHz Function Generator - KC3ZQ
- 400 kHz to 33 MHz Signal Generator - N2DCH
- Choke Inductance Checker - W8VWX
- Inductor Gauge Meter
- Calibrated Field Strength Meter - VE3CES
- Gauss Meter - KB4ZGC
- JFET Pinch-Off Voltage Meter
- Pure Sine-Wave Wien Oscillator
- Spectrum Analyzer using TV-Tuner - W6WTU
- Tube-Type Dip Meter - K4LJA
- 3-digit Capacimeter - W3KBM
- 7 MHz Dual-Tone Generator for IP3 test - DC4KU
- 10 Hz to 10 kHz Frequency Meter on DVM - W3HB
- Antenna Resistive Bridge - W3MT
- 137 kHz Low-Frequency Field Meter - PA0SE
- 144 MHz FM Signal Generator - ZR6UM
- PLL Capacimeter - WA0ZCR
- Remote Field Strength Meter - W2IMB
- 146 MHz FM Deviation Meter - KA8OBL
- 400 MHz to 500 MHz Source Dipper - WB0ESV
- HF Signal Generator
- 1Hz to 10MHz, 50ns-500ms, Pulse Generator
- 1pF to 1uF 4-digits Capacimeter
- 2 MHz Function Generator - KB4ZGC
- 300 kHz to 3 MHz Square-Wave with Few-nsec Rise-Time
- Audio Function Generator
- Capacimeter with MK5009 - W4VGZ
- Dip-Meter - WB0ESV
- Direct Reading on DVM Inductance Meter - W8VWX
- Inductor Q-meter - N7APE
- Pulse Generator - WA3RJS
- Two Marker Generators
- Noise Generator up to 2 GHz - DF1JM
- 150 kHz to 34 MHz Signal Generator
- 1.6 MHz to 33 MHz Signal Generator - ZL2PD
- 300 Hz to 12 kHz Audio Signal Generator - ZL2PD
- 400 Hz to 30 MHz Single-Span Generator - ZL2PD
- 450 kHz to 60 MHz Signal Generator - ZL2PD
- Butler Quartz Tester for Anti-Resonat Frequency
- 2.4 GHz WLAN Field Strength Meter