# ИЛТ4-30М

> model of vacuum fluorescent display for audio power amplifiers

**Wikidata**: [Q123377298](https://www.wikidata.org/wiki/Q123377298)  
**Source**: https://4ort.xyz/entity/4-30

## Summary
The ИЛТ4-30М is a vacuum fluorescent display model designed for use in audio power amplifiers, developed in the Soviet Union by the Reflektor manufacturer in 1983. It provided visual indicators for audio settings and was utilized in equipment such as the Radiotehnika U-101-stereo. As a specialized component, it reflects the era's advancements in consumer electronics.

## Key Facts
- **Inception**: 1983
- **Manufacturer**: Reflektor (Soviet Union)
- **Primary Use**: Audio power amplifiers (e.g., Radiotehnika U-101-stereo)
- **Type**: Product model, subclass of vacuum fluorescent displays
- **Alias**: П402
- **Country of Origin**: Soviet Union
- **Documentation**: Featured in Wikimedia Commons category "ИЛТ4-30М"

## FAQs
### Q: What was the ИЛТ4-30М used for?
A: The ИЛТ4-30М served as a vacuum fluorescent display in audio power amplifiers, providing visual feedback for settings like volume or equalization.

### Q: Who manufactured the ИЛТ4-30М?
A: It was produced by Reflektor, a manufacturer based in the Soviet Union.

### Q: When was the ИЛТ4-30М developed?
A: The model was introduced in 1983, reflecting Soviet-era electronics innovation.

## Why It Matters
The ИЛТ4-30М holds significance as a specialized component in Soviet audio technology, demonstrating the integration of vacuum fluorescent displays into consumer electronics during the 1980s. Its use in devices like the Radiotehnika U-101-stereo highlights its role in enhancing user interaction with audio equipment, offering clear visual cues in an era predating digital screens. As a product of Reflektor, it exemplifies domestic manufacturing efforts in the Soviet Union, contributing to the broader narrative of Eastern Bloc technological development. For collectors and historians, the ИЛТ4-30М serves as a tangible artifact of analog audio engineering and Cold War-era industrial design.

## Notable For
- **Soviet-Era Technology**: Represents 1980s Soviet innovation in consumer electronics.
- **Specialized Application**: Tailored for audio amplifiers, notably the Radiotehnika U-101-stereo.
- **Alias Designation**: Known alternatively as П402, indicating potential military or industrial coding conventions.
- **Documented Heritage**: Preserved in Wikimedia Commons, ensuring accessibility for research and historical record.

## Body
### Development and Release
The ИЛТ4-30М was designed and manufactured by Reflektor, a Soviet electronics producer, and released in 1983. As a product model, it belonged to the broader class of vacuum fluorescent displays (VFDs), which were valued for their brightness, low power consumption, and durability in low-light environments.

### Technical Specifications
- **Function**: Provided segmented or numeric displays for audio settings (e.g., volume, balance, or input selection).
- **Technology**: Utilized vacuum fluorescent technology, common in pre-LCD era electronics for its readability and efficiency.
- **Alias**: Referenced as П402 in documentation, suggesting adherence to Soviet industrial or military standards.

### Applications
The display was integrated into audio power amplifiers, including the Radiotehnika U-101-stereo, a stereo amplifier produced in the Soviet Union. Its role was to offer users clear visual feedback, enhancing the usability of audio equipment in both domestic and professional settings.

### Legacy
Though the ИЛТ4-30М has limited sitelink presence (1), its inclusion in Wikimedia Commons ensures its recognition in the historical record of electronics. It remains a niche but notable example of Soviet audio technology, illustrating the convergence of functional design and analog innovation during the 1980s.