RAYTHEON QK329 Square Vacuum Tube QT329

( Brand: Raytheon ), ( Model: QT329 ), ( Type: Vacuum Tube )

Review RAYTHEON Rare Vintage Square Law Vacuum Tube

The QT329 Raytheon QK329 is a square vacuum tube, a legacy component that once played a pivotal role in the early days of electronic communication and computing. This particular model, the QT329, is a type of triode vacuum tube, which means it contains three electrodes: the cathode, grid, and anode.

The QT329 is a 6.3mm (1/4") pin base tube, with a plate diameter of 3.2mm (1/8"). The tube's glass envelope is robust and designed for long-term use, ensuring electrical insulation and protecting the internal components from external conditions.

The QT329 operates on a voltage range of 250V to 300V AC, and it has a plate current of 50mA. It's a medium power tube, suitable for applications that require moderate power output.

The tube's triode configuration allows it to function as both an amplifier and a voltage controller, making it versatile for various electronic circuits. In the context of vacuum tubes, the QT329 is considered a medium-frequency device, with its optimal operation range falling between 100Hz and 10MHz.

While the QT329 may not be relevant in modern electronics, given the widespread use of transistors and solid-state devices, it still holds value in certain niche applications, such as in vintage audio equipment, radio technology, or in educational and experimental settings. Its unique properties and historical significance make it an interesting artifact for electronics enthusiasts and collectors.

1. High-Quality Construction: Raytheon is known for its high-quality vacuum tubes, and the QT329 is no exception. It is made with durable materials and can withstand high voltage and current.

2. Versatile Use: The QT329 is a versatile tube that can be used in a variety of applications, including audio amplifiers, oscilloscopes, and vacuum tubes testers.

3. Long Lifespan: With proper care and maintenance, the QT329 can have a long lifespan, making it a cost-effective choice in the long run.

4. Collectible Value: Vacuum tubes have become a popular collectible, and the QT329 is no exception. It may appreciate in value over time.

1. Limited Availability: Vacuum tubes are not as commonly used as they once were, and the QT329 may be difficult to find in stock.

2. High Cost: While the QT329 is a high-quality tube, it can also be expensive. This may be a barrier for some buyers.

3. Requires Maintenance: Vacuum tubes require regular maintenance to ensure they are functioning properly. This can be time-consuming and may require specialized knowledge.

4. Less Efficient: Vacuum tubes are generally less efficient than solid-state devices, which can result in higher energy consumption.

The QT329 Raytheon QK329 square vacuum tube is a high-quality, versatile tube that can be a good investment for collectors and enthusiasts. However, its limited availability, high cost, and requirement for maintenance may be deterrents for some buyers. If you are willing to invest in a high-quality tube and are willing to put in the necessary maintenance, the QT329 can be a worthwhile purchase.

If you are interested in the QT329, I recommend doing your research before making a purchase. Check with local audio stores or online retailers to see if they have the tube in stock, and compare prices to ensure you are getting a fair deal. Additionally, consider investing in a vacuum tube tester to ensure the tube is functioning properly before using it in your equipment.

Details:

This tube was developed in the 1950s and is known as square law it used early analog computers to mathematical functions. This same model tube serial number 518 is part of the collection at museum in Germany. I'm starting with a low initial bid of 9. For sale is a quite rare Raytheon model QK329 vacuum tube.

I don't say this often, but is a must have tube for any serious collector. These were primarily used by government agencies and universities. Let the chips fall where they may. This tube is in superb condition although it untested.

I don't think many of these were made and doubt are still in existence.

part #: qt329 prices

• $6.53-$59.99

specifications tubesocketvintagego:

• brand: Raytheon
• model: Qt329
• type: Vacuum Tube

Ratings:

1. Fast, accurate, as advertised! 100% 04-04-17
2. thanks 04-13-17
3. Awesome seller. Great communication and Fast shipping. 04-12-17
4. All good here! Nice tubes! Great communication! Thank you! 04-11-17
5. perfect transaction thank you 04-04-17

Offer tubesocketvintagego:

• bids: 0
• Sold: 0
• quantity: 1
• best offer: false
• min. bid: $9.99
• Started: April 13, 2017, 11:30 pm

Payments tubesocketvintagego:

• PayPal

General tubesocketvintagego:

• in stock: Yes
• consumer electronics > vintage electronics > vintage audio video parts accessories consumer electronics > vintage tubestubes sockets audio

Returns tubesocketvintagego:

• policy: no returns

Shipping tubesocketvintagego:

• handling: 2 days
• type: Calculated

Seller tubesocketvintagego:

• zipcode: 32765
• city: Oviedo, Florida

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