Stethotracer SA-115

The Stethotracer SA-115 is a compact, pen-sized signal tracer designed for efficient troubleshooting in electronic circuits. This versatile instrument amplifies low-level audio and modulated radio frequency signals, enabling technicians to swiftly identify issues such as hum, oscillations, ground loops, and breaks in printed circuit boards.

Key Features

• High Amplification: Equipped with a three-transistor amplifier, the Stethotracer SA-115 provides a voltage gain of approximately 800, effectively amplifying signals for clear detection.
• Wide Frequency Response: The device maintains a frequency response within ±3 dB from 250 Hz to 100 kHz, ensuring accurate signal tracing across a broad spectrum.
• Interchangeable Probes: It comes with multiple screw-on heads, including 0 dB, 20 dB, and 40 dB attenuator probes, as well as an RF detector probe, enhancing its adaptability for various applications.
• Compact and Portable: Measuring just 5.5 inches in length and weighing 1.5 ounces, the Stethotracer SA-115 is designed for ease of use and portability, fitting comfortably in a technician’s pocket.
• Self-Contained Power: Powered by a single 1.5-volt battery, the device offers convenient, on-the-go operation without the need for external power sources.

Applications

The Stethotracer SA-115 is ideal for diagnosing and troubleshooting a variety of electronic equipment, including radios, amplifiers, phonographs, magnetic tape recorders, dictating machines, hearing aids, and phono pickup cartridges. Its ability to detect and demodulate low-level signals makes it an invaluable tool for both field and laboratory settings.

Additional Accessories

To further enhance its functionality, optional accessories are available, such as a vibration pickup probe, miniature microphone probe, magnetic tape head probe, microwave demodulator probe, and telephone pickup induction probe. These attachments expand the Stethotracer SA-115’s capabilities, allowing it to address a wide range of diagnostic needs.

With its combination of portability, versatility, and high-performance amplification, the Stethotracer SA-115 stands out as a reliable instrument for electronic signal tracing and troubleshooting tasks.