RF Probe
RF Probes
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Special test lead that converts your regular DC voltmeter to a RF reading voltmeter -
A sensitive RF probe is very useful in a situation where an oscilloscope is not available -
The Sharpie Probe, homemade with simple tools and few resistors -
Mad your own simple FS meter. It is the simplest thing to make and is good enough to see if the antenna under test is radiating more power than your old ground plane, old mobile vertical or just radiating at all in a particular direction or in all directions. -
This article describes a DIY RF field strength meter project inspired by VK3YE's "The Squeakie" design. The device, built around a 555 timer IC and a 1N4148 diode, converts RF signal strength into audible tones with proportional pitch. The author enhanced the original design by adding volume control, LED indication, and digital readout capabilities using an Arduino Nano and LCD display. The completed project functions as a versatile RF detection tool, suitable for antenna testing and fox hunting, while offering multiple output methods: audio, visual, and digital measurement display. -
An RF Probe project by N5ESE -
Learn how to build and use an RF V-probe with better sensitivity than traditional neon lamps for measuring RF voltages on ground, chassis, and cables in your shack. This article explains the simple operation of the LED RF V-probe based on the properties of red LEDs, providing a cost-effective solution to prevent program and hardware failures caused by stray RF voltages. The circuit, wiring diagram, and comparison with a neon lamp are included, making it easy for hams to improve their RF voltage analysis capabilities. -
This RF probe circuit allows RF to be measured in the presence of DC -
Build you own RF probe, measure the level of RF voltage present at a particular point. -
A RF Probe circuit for the RADIO frequency experimenter to check the presence of a RF signal and also to measure its strength -
A simple RF probe diagram -
Making RF probes with parts you already have