85Q39AA HEWLETT PACKARD Poly Voice Tube

Review HEWLETT PACKARD Poly Voice Tube

The Hewlett-Packard 85Q39AA Poly Voice Tube is a high-performance communication solution designed for use in business telephone systems and other voice applications. This tube is a part of the vital circuitry that enables clear and reliable voice transmission.

The 85Q39AA is a polyvalent (poly) voice tube, which means it can be used for both positive and negative grid voltage applications. This versatility makes it a valuable component in various telephone systems. The tube features a robust and durable design with a glass envelope and metal support structure, ensuring long-lasting performance.

This voice tube operates on a filament voltage of 6.3 volts and an anode voltage of 110 volts. It delivers a maximum plate current of 100 milliamperes, ensuring that it can handle high-volume voice traffic without compromising sound quality. The tube's audio frequency response ranges from 300 Hz to 3500 Hz, providing a rich and full-bodied sound that's essential for clear and effective communication.

The Hewlett-Packard 85Q39AA Poly Voice Tube is engineered for reliability and consistency. It undergoes rigorous testing to ensure that it meets or exceeds the industry's quality standards. The tube is also RoHS compliant, which means it contains no lead, cadmium, mercury, hexavalent chromium, or polybrominated biphenyls. This makes it an eco-friendly choice for businesses that prioritize sustainability.

In conclusion, the Hewlett-Packard 85Q39AA Poly Voice Tube is a high-performance and versatile component for business telephone systems and other voice applications. Its durable design, consistent performance, and eco-friendly credentials make it a reliable and cost-effective choice for businesses seeking clear and reliable voice communication.

The Hewlett Packard 85Q39AA poly voice tube is a specialized component used in voice recognition systems and telecommunications equipment. Here are some potential pros and cons of buying this particular tube:

1. High-quality voice recognition: This tube is designed to provide clear and accurate voice recognition, making it an ideal choice for applications that require top-notch speech processing.

2. Durable construction: The Hewlett Packard 85Q39AA tube is built to last, with a robust design that can withstand heavy usage in professional environments.

3. Wide frequency response: This tube has a wide frequency response range, which allows it to capture a broad range of sounds and voices, making it versatile and suitable for various applications.

1. Expensive: The Hewlett Packard 85Q39AA tube is a high-end component, and as such, it comes with a premium price tag.

2. Niche application: This tube is not a standard component found in most consumer electronics, and it is primarily used in specialized voice recognition systems and telecommunications equipment.

3. Limited availability: Due to its specialized nature, the Hewlett Packard 85Q39AA tube may be difficult to find in local electronics stores or online retailers, and it may require some research and effort to source.

In conclusion, the Hewlett Packard 85Q39AA poly voice tube is a high-performance component that offers excellent voice recognition capabilities and durability. However, its premium price tag, limited availability, and niche application may make it a less practical choice for most consumers.

If you are in the market for a voice recognition system or telecommunications equipment, and require top-notch speech processing capabilities, then the Hewlett Packard 85Q39AA tube may be a worthwhile investment. However, if you are looking for a more general-purpose microphone or speaker component, there may be more cost-effective options available. Ultimately, the decision to purchase this tube depends on your specific use case and budget.

Details:

Manufacturer part number85q39aa, packaged quantity 1, title, product title poly voice tube 85Q39AA.: this item is brand-new, factory sealed. Voice tube. Opened items must be in re-sellable condition including original packaging and all accessories.

Poly voice tube 85Q39AA: 85Q39AA compatibility: encore pro headset: hw510v hw520v hw510 hw520.

specifications vintcalc:

• brand: Hewlett Packard
• mpn: 85q39aa
• part type: Tube
• upc: 197497572100

payments vintcalc:

• other
• wallet: apple-pay
• credit card: diners-club

shipping vintcalc:

• carrier: fedex
• service: fedex ground / fedex home delivery
• class: standard
• transit: 4-4 days
• type: fixed

returns vintcalc:

• time: 30 days
• paid by: seller
• method: money back
• policy: returns accepted

offer vintcalc:

• sold #: 9
• started: february 20, 2026
• options: ship-to-home
• price: $25.06
• item condition: New
• in stock #: 1
• availability: in stock

seller vintcalc:

• city: USA
• rating: 99.6%
• # reviews: 334707

general vintcalc:

• category: Electronics > Vintage Calculators