Capacitor Outside Foil Sniffer w/ Arduino Version 2.0r | Improved Accuracy

Speaker Polarity Tester w/ AD8302 Phase Detector Module

TA7642 AM Radio Receiver w/ Q-Multiplier

Designing & Building an RF Oscillator Sniffer Coil w/ X1 (1:1) Oscilloscope Probe

Oscillator RF Sniffer | Close Proximity AM Transmitter | Ferrite Antenna Booster

Simplex Model PB - Chassis De-rusted/Painted | AM Receiver Build w/ Integrated Q-Multiplier Preview

RF Signal Generator - Modulation Adder w/ 1N60 Germanium Diode

Kenwood DIP METER DM-81 - How to Add External Modulation - Close Proximity Broadcaster

Simplex Model PB | Restoration Update

Op-Amp AM Broadcaster Circuit | Close Proximity (Breadboard)

Build a Simple Circuit to Measure LC Resonant Frequency

Solid-State Synchronous Vibrator Circuit - Using a 555 Timer, 2N3904, MOSFETs and…

Simplex Model PB | Loudspeaker Rebuild Attempt

Solid-State Synchronous Vibrator Circuit - 6V Negative Ground

74HC14 AM Broadcaster Circuit

Simplex Model PB | Looks Like a Piezo Electric Loudspeaker, But it's Not

Synchronous Vibrator Circuit w/ Arduino - Schematic, BOM & Sketch

Synchronous Vibrator Build w/ Arduino - Schematic, BOM & Sketch Coming Soon

Simplex Model PB | Chassis Reveal & Synchronous Vibrator

Simplex Model PB | Introduction

Zenith 5-S-127 | Back Together & C Band (Shortwave Listening)

Another Impedance Method using Ohm’s Law | Z=E/I

A Simple M&P to Measure Loudspeaker Reflected Impedance & Output Transformer Turns Ratio

Unknown Antenna Coil Inductance Calculations

Zenith 5-S-127 | Restuffing Dry Electrolytic Capacitor Cans

Zenith 5-S-127 | Low B+ Voltage & Electrolytic Capacitor Configuration

Zenith 5-S-127 | Power Transformer Characterization w/ Peak LCR45 Using Leakage Inductance Method

Antenna Coil Connectivity Validation Tip

What does it do? It’s a 6A8 Armstrong Oscillator Tester

What does it do?