EIMAC KY-21A Ham Radio Transmitter Rectifier Vacuum Tube

( Brand: Eimac ), ( Manufacturer Part Number: KY-21A ), ( Country/region Of Manufacture: United States )

Review EIMAC Vintage Untested Ham Radio Transmitter Rectifier Vacuum Tube Used

The Ky-21A Eimac Ham Radio Transmitter Rectifier Vacuum Tube is a vital component in the operation of high-power amateur radio transmitters. This tube, manufactured by Eimac, a renowned name in the vacuum tube industry, is specifically designed for use in RF power applications.

The Ky-21A is a pentode tube, which means it has five active electronic elements. The primary function of this tube in a radio transmitter is to convert the alternating current (AC) power from the power supply into direct current (DC) to power the final RF amplifier stages. This process is crucial in generating the high-frequency radio waves that are transmitted through the air.

The Ky-21A is a high-power tube, capable of handling up to 200 watts of input power. It operates at a voltage of 6.3 volts and a current of 1.5 amperes. The tube has a plate heater voltage of 13.2 volts and a plate heater current of 0.3 amperes.

The Ky-21A is known for its excellent thermal performance. It has a large plate area and a highly efficient heater design, which allows it to dissipate heat effectively. This makes it suitable for use in high-power applications where heat dissipation is a critical concern.

The tube is housed in a glass envelope with metal pins for electrical connections. It is designed to withstand the harsh environment of a radio transmitter, including high voltages, high currents, and high temperatures.

In summary, the Ky-21A Eimac Ham Radio Transmitter Rectifier Vacuum Tube is a high-performance, high-power tube specifically designed for use in radio transmitters. Its excellent thermal performance and robust construction make it a reliable choice for amateur radio operators.

1. High Power Handling: The Ky-21A tube has a high power handling capacity, making it suitable for high power transmitters.

2. Long Life Span: Vacuum tubes, when properly maintained, can have a long lifespan compared to solid-state devices.

3. Rich Sound: Vacuum tubes are known for producing a rich, warm sound that some users prefer over the sound produced by solid-state devices.

1. Fragility: Vacuum tubes are more fragile than solid-state devices and can be easily damaged if not handled properly.

2. Requires Maintenance: Vacuum tubes require more maintenance than solid-state devices, including regular cleaning and alignment.

3. Limited Availability: Vacuum tubes are not as widely available as solid-state devices, which can make them more expensive and harder to find.

The Ky-21A Eimac ham radio transmitter rectifier vacuum tube offers several advantages, including high power handling and a rich, warm sound. However, it also has some disadvantages, such as its fragility and the need for regular maintenance. Ultimately, whether or not to buy this tube depends on your personal preferences and the specific requirements of your ham radio setup. If you value the sound quality and are willing to put in the maintenance work, then this tube could be a good choice for you.

If you are considering buying the Ky-21A Eimac ham radio transmitter rectifier vacuum tube, I recommend doing some research and reading reviews to make sure it is the right fit for your needs. Additionally, I recommend investing in a good vacuum tube tester to ensure that the tube is in good working order before you use it. By taking these steps, you can help ensure that you get the most out of your investment in this tube.

Details:

Please see to photos for condition and quality.

part #: ky21a prices

• $36.09-$125.00

specifications tubesocketvintagego:

• brand: Eimac
• mpn: Ky-21a
• country/region of manufacture: United States

Shipping tubesocketvintagego:

• handling: 1 days
• cost: $9.95
• type: Flat

Returns tubesocketvintagego:

• policy: returns accepted
• paid by: Buyer
• type: Money Back
• details: Will not accept returns for reasons such as ordered the wrong item, change mind, not what I thought It was, wrong color ordered, item ordered.
• time: 30 Days

Offer tubesocketvintagego:

• quantity: 1
• bids: 0
• Sold: 0
• best offer: false
• Started: September 19, 2017, 5:53 pm

General tubesocketvintagego:

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

Ratings:

1. Quick response and fast payment. Perfect! THANKS!! 09-15-17
2. Hope to deal with you again. Thank you. 09-17-17
3. Great! 09-18-17
4. Good buyer, prompt payment, valued customer, highly recommended. 09-15-17
5. Thanks much for a fast and easy transaction! 09-11-17

Seller tubesocketvintagego:

• city: Morriston, Florida
• zipcode: 32668

Payments tubesocketvintagego:

• CashOnPickup
• PayPal

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