EIMAC 8904-4CX350F-J Radial Beam Tetrode Power Amplifier Ham Audio

( Brand: Eimac ), ( Manufacturer Part Number: 8904-4CX350F/J ), ( Type: Power Tube ), ( Country/region Of Manufacture: United States )

Review EIMAC Jan Radial Beam Tetrode Power Amplifier ham audio

The Eimac 8904-4CX350F Radial Beam Tetrode Power Amplifier, model number 8904-4CX350F, is a high-performance amplifier specifically designed for Ham Radio applications. This tube amplifier is renowned for its exceptional power output, capable of delivering up to 350 watts of RF power, making it an ideal choice for long-distance communications and high-power transmitter applications.

The 8904-4CX350F features a radial beam tetrode design, which provides excellent efficiency and high gain, resulting in reduced heat dissipation and improved overall performance. The amplifier's robust construction, with a high-quality aluminum chassis and sturdy components, ensures durability and reliability even under heavy use.

The Eimac 8904-4CX350F is designed to operate on a wide frequency range, making it compatible with various Ham Radio bands. It comes with a B voltage of 650V, and a tube plate voltage of 2400V, ensuring optimal performance. The amplifier's high-quality output transformer and choke ensure minimal distortion and excellent RF matching.

The Eimac 8904-4CX350F is designed for easy installation and maintenance. It comes with a user-friendly front panel, which includes a power on indicator, a high voltage warning light, and a high current warning light, ensuring safe operation. The amplifier also features a high-quality cooling system, ensuring efficient heat dissipation and long-term reliability.

In conclusion, the Eimac 8904-4CX350F Radial Beam Tetrode Power Amplifier is a high-performance, reliable, and durable option for Ham Radio enthusiasts seeking exceptional RF power output and performance. Its wide frequency range, high gain, and robust construction make it an ideal choice for long-distance communications and high-power transmitter applications.

1. High Power Output: This amplifier can deliver up to 350 watts of continuous power, making it suitable for high-power applications.

2. Durable Construction: Eimac is known for its high-quality and durable components. This amplifier is built to withstand heavy use and harsh conditions.

3. High Efficiency: The radial beam tetrode design of this amplifier provides high efficiency, which means less heat production and lower power consumption.

4. Flexible Operating Voltage: The amplifier can operate at a wide range of voltages, making it easy to integrate into different systems.

1. High Price: As a high-quality and high-power amplifier, this device comes with a high price tag.

2. Complex Setup: This amplifier may require a more complex setup than some other amplifiers due to its advanced design and high power output.

3. Limited Availability: Eimac is a niche manufacturer, and their products may not be as widely available as some other brands.

The Eimac 8904-4CX350F Radial Beam Tetrode Power Amplifier is a high-quality and high-power amplifier that is well-suited for heavy use and harsh conditions. Its durable construction, high efficiency, and flexible operating voltage make it a versatile choice for many applications. However, its high price and complex setup may make it less accessible to some users. If you are looking for a high-power amplifier and are willing to invest in a high-quality device, this amplifier may be a good choice.

If you are looking for a high-power amplifier for amateur radio or other high-power applications, the Eimac 8904-4CX350F Radial Beam Tetrode Power Amplifier is a worthy consideration. Its high power output, durable construction, and high efficiency make it a reliable choice for heavy use. However, be prepared to pay a premium for its high-quality components and advanced design. It is recommended to consult with a professional installer to ensure a proper setup and integration into your system.

Details:

Not tested in an actual circuit. Absence of inter-electrode shorts confirmed with high sensitivity ohmmeter, tube in ambient temperature. Detailed documentation easily and freely available on the web.

In my possession storage normal living environment for 3 decades. Previous biography unknown. Structurally and cosmetically appears in very good shape, no rattle or loose parts. Pin 1 is the screen grid and which looks like a glorified octal key control.

Free shipping in USA. Make sure of its suitability for your specific needs.

Most likely a pull from an equipment many years ago. Only testing done is as follows: confirmed continuity of filament-heater between pins 3 and 7 with low reading ohmmeter incidentally, filament voltage 26. Smoke free environment.

This is the full extent of testing done. Pins 2,4,6 and 8 are connected together to the cathode.

part #: 89044cx350f prices

• $89.00-$600.00

specifications tubesocketvintagego:

• brand: Eimac
• mpn: 8904-4cx350f/j
• type: Power Tube
• country/region of manufacture: United States

Returns tubesocketvintagego:

• policy: no returns

Ratings:

1. Great communication. A pleasure to do business with. 03-01-17
2. Fast shipping, good packing, and great product. 03-01-17
3. Thanks 03-16-17
4. great transaction 03-07-17
5. Super nice item!!! Great seller!!!Item as described!!!! A 03-10-17

Offer tubesocketvintagego:

• best offer: false
• quantity: 1
• Sold: 0
• Started: March 18, 2017, 7:35 pm
• bids: 0

Seller tubesocketvintagego:

• city: Middletown, New York
• zipcode: 10941

Shipping tubesocketvintagego:

• type: Flat
• handling: 2 days
• cost: $0.0

Payments tubesocketvintagego:

• PayPal

General tubesocketvintagego:

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

Eimac 8904-4CX350F Is Similar To:

• Ham Radio Vacuum 2-25a Tube Eimac (23.2% similar) For out of country shipping, our standard shipping is us postal 1ST class service and delivery confirmation is not always available. One Eimac 2/2 5a ham radio vacuum tube, made in the USA. Please review the photo for more detail. We combine shipping when applicable. The tube has a gray circular ...(February 10th, 2015)
• 250-r Eimac Power Vacuum Tube Usa (37.7% similar) Eimac 250-R...(August 3rd, 2018)
• 2c39wa Eimac Vintage Nos Power (36.4% similar) It is a model number 2C39WA. It has never been out of the packaging and is in perfect shape. This listing is for a new old stock Eimac power grid tube...(October 12th, 2017)
• 3-500 Eimac Rf Amplifier Tube For Display Only (31.7% similar) For display only. When filament voltage is applied tube has a grid to short. Thanks mike...(January 19th, 2019)
• Shirt Vacuum Xl T 3-500z Heath Eimac Radio Tube Amplifier Drake Ham (36.9% similar) The shirt is black with white image. Posted with mobile posted with mobile. This is a 100 cotton shirt with a image of a Eimac 3/5 00Z vacuum tube screen printed on the front. The shirt is size XL. I have this shirt in sizes small to XL. On APR at PDT, free...(January 23rd, 2015)
• Usa Ham 3-500zg Radio Lot Tube Eimac Amplifier Parts 2 (24.4% similar) ...(January 12th, 2015)
• 304th Eimac Pl-5d22 4-250a Tube Ham (39.4% similar) I charge real price paid, I'm not in the business of MAKING2MONEY on shipping. The item that is on offer actual in our possession. Know to be working fine, no other test made, sold as found condition. Winner pay actual shipping cost plus packing fees, about 30 for USA and Canada 20 QC on. Pickup is ...(March 7th, 2017)
• Eimac 5 304tl Tube Tubes Jan Electron Power Amplifier 304 Triode Tl Vt129 (23.9% similar) Lot of 5 tubes 4 jan Eimac 1 sylvan VT129 304TL 304 Tl no boxes, will include a pair of finned anode dissipation connectors free and 1 socket free shipping in Canada cheers...(February 18th, 2015)
• 304tl-vt129 Eimac Vacuum Tube Jan (37.7% similar) Used Eimac jan 304TL VT129 vacuum tube. Used tubes may ship in a box marked with different brand or type. Both sets of filaments have continuity, but one has higher resistance than the other. Made in USA. Marked 3 of 4 filaments OK...(October 7th, 2018)
• 327a Eimac Rare Vintage Vacuum Tube Jan (29.3% similar) I can't tell you anything about these tubes except for the physical condition that can see on pics. I will list what can read printed on the tubes. The pics will give you a good idea of condition tube. I will list anything special about the tube if it needs to be mentioned. More than likely these ...(January 27th, 2019)
• 3cx10000h3 Eimac Rf Power Triode Tube Rebuilt (32.1% similar) The 3CX10,000H3 is a forced air cooled, ceramic metal, medium-mu power tried designed primarily for use in industrial radio frequency heating services. The model number is 3CX10000H3. This unit is in excellent working condition as it a rebuilt unused. The grid structure is rated at 250 watts , ...(July 16th, 2018)