4cx800 amplifier for sale - There has been rumours of a 3-600Z tube, I heard The first commercially made amps using the "new Svetlana 4CX800 " were actually using GU74's A pi-L.

 
<b>4cx800 amplifier for sale</b>. . 4cx800 amplifier for sale

A magnifying glass. AL-800H amplifiers use a pair of Eimac® 3CX800A7 tubes in a class AB2 grounded grid circuit. HF AMP. QSK, soft key interface, grid protection for . It is useful at full ratings through 250MHz. K3ICH now makes those. BE AWARE THIS UNIT MUST GO MOTOR FREIGHT!! CAN EASILY COST $200. The HF. 4cx800 amplifier for sale. 95 (0) Browse. The GU-74b / 4CX800A Svetlana tetrode is used in wide-band non-tunable amplifiers and for single-sideband power amplification in stationary and mobi. Jul 15, 2009 · Biggest bunch of thrown together junk ive ever seen,friend of mine paid 1800. JTG Built GU74B (4cx800) Steel Tube Linear Amplifier (Tetrode) 220v - YouTube JTG Built GU74B (4cx800) Steel Tube Linear Amplifier (Tetrode) 220v Rooster CB Radio Connection 11. The 4CX800A us a high-performance ceramic metal tetrode with a plate dissipation rating of 800 watts with forced air cooling. With this power the tube needs really big blower that can give 75 mm H2O pressure and 2. RF power amplifier 4CX10-000J: 92Kb / 1P: RF linear amplifier 4CX1000A: 97Kb / 1P. 4CX800 data sheet. The Alpha91b is powered by a matched pair of GU74b / 4CX800 tubes. Reviews: 13. 95 (0) Browse. Free shipping. 00 Part Number: 1x3-500z Availability: Out of Stock. The 4CX800A us a high-performance ceramic metal tetrode with a plate dissipation rating of 800 watts with forced air cooling. POWER SUPPLIES. Amplifiers · Anderson Power Pole · Antennas and Related Products. AU $251. A magnifying glass. Log In My Account ft. 4cx800 amplifier for sale K2VCO 4CX1000A RF Linear Amplifier. Operation with zero grid bias simplifiers assocated circuitry by eliminating the bias supply. When used in a modern amplifier with auto-tuning and vacuum tube protection circuits,. New 4kW Power Amplifier - OM4001A. The performance characteristics of the 4CX800A allow its wo use as a hifg gain grid-driven RF amplifter or in grounded grid service. take weak signals and increase their intensity over the transmission 45 GHz Linear Amplifier Hk 416 22lr Suppressor For Sale 8-30MHz. ACOM 1010 HF Linear Amplifiers Amplifier, 160-10 meters, One Svetlana GU-74B (4CX800A) Tube, 700 W PEP, 500 W CW, (Cut-off European AC Plug to Install USA Plug), Each See More Specifications Estimated Ship Date: Today Would you rather pick it up? Select Location Free Shipping Add To Cart Wish List Compare DX Engineering Super Card. solif state mrf150 eb104 linear amplifier hf vhf home made with 4cx800 gu74b gu78b 3cx1200 3cx1200a7 8877 3cx1500 4cx250 4cx15000a gu36b. Shop home audio amplifiers for sale on Reverb. POWER SUPPLIES. TUBE AMPS. ACOM 1010 HF Linear Amplifiers Amplifier, 160-10 meters, One Svetlana GU-74B (4CX800A) Tube, 700 W PEP, 500 W CW, (Cut-off European AC Plug to Install USA Plug), Each See More Specifications Estimated Ship Date: Today Would you rather pick it up? Select Location Free Shipping Add To Cart Wish List Compare DX Engineering Super Card. This eliminates the need for multiple input tuned circuits and neutralization. 4cx800 amplifier for sale. E-Mail: k3ich@arrl. AU $126. Get the best deals for 4cx800 amplifier at eBay. Shop by category. ur; ag. It is useful at full ratings through 250MHz. Sold Out. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Skip to main content. I installed them in a Ten-Tec. Eaglemade SOLD 4 TUBE 4CX800 SOLD. ANTENNAS & MOUNTS. Reviews: 13. New Releases. AU $51. Reviews: 13. that disconnects about 3/4's of the main cap for the higher bands. 4CX800/ GU-74B Transmitting TubeNEW OLD STOCK Never Used $320. ay; cd. These tubes are laso tested and de-gased for better function,stability and qaulity. HI homebrew hf tube amplifier , Jul 04, 2009 · 4 KW HF LINEAR AMPLIFIER with GU-78B by SV8JE If you don't mind buying russian, I have a place where the 4CX800 4cx800 amplifier for sale redlands library login. 4-KWatt SOLID STATE QRO Amplifier 16 X MRF150 G. If you have questions or concerns about any of the videos or the equipment posted within them you . K3ICH now makes those. all the internal wiring was a total laugh will components hanging in mid air,the power supply doubler was laid out on a scrap piece of plexiglass all scratched and crooked on one end. - Plate Current Meter. GU-74B NEW tetrode tube NOS same as 4CX800A GU74B tubes 85 shipping Alpha 91 B amplifier with 4CX800 Tubes KT36XA Antenna from M-Squared Vertical gama fed tower. The GU-74b / 4CX800A Svetlana tetrode is used in wide-band non-tunable amplifiers and for single-sideband power amplification in stationary and mobi. The result is a two-winding 13KVA unit (about 400LBS) and the regulation from 300mA (idling) to 2A is 4460-4320V, or 3%, and just 40V of ripple. 0 volts Current: 14. When used in a. New Releases. Eimac 3CX3000A7 tube. Log In My Account bf. Output power 2100+ kw 8500+ Peak watts maximum. Log In My Account bf. 65 + AU $27. 4CX800A Transmitting Ceramic Tube - Radioworld UK Shopping basket Sub total £0. There has been rumours of a 3-600Z tube, I heard The first commercially made amps using the "new Svetlana 4CX800 " were actually using GU74's A pi-L network is used in the output circuit. 00 Part Number: 1x3-500z Availability: Out of Stock. C $72. Availability: Out of Stock. MSRP: $100. Here is the list of changes and improvements. Eaglemade SOLD 4 TUBE 4CX800 SOLD. 4cx800 amplifier for sale. Amplifier (amp) - The work of an amplifier is to take weak signals and increase their intensity over the transmission 45 GHz Linear Amplifier Hk 416 22lr Suppressor For Sale 8-30MHz. Two Svetlana 4CX800 ceramic-metal tetrodes. Linearity and power gain are excellent due to the beam forming geometry of the special grid. In this mode, an exceptionally simple, stable. Reviews: 13. A transformer for this can be made by restacking the core of a 3-phase 20KVA transformer from an old RCA Amplidyne broadcast rig. The grounded-grid circuit is simple and stable. 5 m³/min airflow. 102" Whip Adjuster 7" Long Version. 4cx800 amplifier for sale. Also, do not tune the 811A tube amplifiers for more than 10 seconds or the tubes may. - Three New 3-500z Tubes - Large Anode Caps. Description Single Tube 4cx800 Vacuum Tube transmitter. 00 for a 2 /4cx250b amplifier brand new and was nothing but junk. Amplifiers · Anderson Power Pole · Antennas and Related Products. This tube and circuit arrangement offer some advantages over others. Alpha 91 B amplifier with 4CX800 Tubes KT36XA Antenna from M-Squared Vertical gama fed tower SO2R - single operator two radio WRTC 2014 Beam Team Captain responsible for installing antennas. Definitive Technology - Descend DN10 10" Sub, 3XR Architecture, 500W Peak Class D Amplifier , (2) 10" Bass Radiators - Black. 5 kwi 2019. The Alpha 99 amplifier is designed to meet international safety standards and FCC. 95 Out of Stock : A14820T HF Amplifiers: 2m. 95 Out of Stock : A14820T HF. POWER SUPPLIES. 4cx800 amplifier for sale. AMPHF - WTB: 4CX800 HF Amplifier I'm looking for an HF amplifier preferably with a pair of 4 cx800 tubes. There has been rumours of a 3-600Z. The GU-74b. Shop by category. The result is a two-winding 13KVA unit (about 400LBS) and the regulation from 300mA (idling) to 2A is 4460-4320V, or 3%, and just 40V of ripple. - New 3cx3000a7 Tube. Covers all HF bands. Still rocks. Conditioning GU74 / 4CX800 tubes Conditioning GU74b / 4CX800A transmitting tubes before installation April 2012 Many common amplifiers, e. HAM AMPLIFIER PARTS EMIC SK1400A POWER TUBE SOCKET 4CX3000A TUBE CHIMNEY SK 1406 Opens in a new window or tab. Free shipping. When used in a modern amplifier with auto-tuning and vacuum tube protection circuits, they may produce much more power and exhibit very long life. When used in a modern amplifier with auto-tuning and vacuum tube protection circuits, they may produce much more power and exhibit very long life. That is how a power supply should perform. 144MHz 1. I've had my QRO for many years and I must say everything about this amp is heavy duty. In my opinion, currently the best, QUALITY amp for the money is a new or used ACOM 1000 that uses a single 4CX800 tubes and puts out a . When used in a modern amplifierwith auto-tuning and vacuum tube protection circuits, they may produce much more power and exhibit very long life. Conditioning GU74 / 4CX800 tubes Conditioning GU74b / 4CX800A transmitting tubes before installation April 2012 Many common amplifiers, e. Category: Electron Tubes. I am located in Central Kentucky would like to get something within driving range. Reviews: 13. A transformer for this can be made by restacking the core of a 3-phase 20KVA transformer from an old RCA Amplidyne broadcast rig. Pi and Pi-L refer to the tank circuitry in your tube amplifier. 4-KWatt SOLID STATE QRO Amplifier 16 X MRF150 G. The performance characteristics of the 4CX800A allow its wo use as a hifg gain grid-driven RF amplifter or in grounded grid service. Ameritron AL-800H Linear Amplifiers produce 1,500 watts output for operations from 160 through 15 meters**. The result is a two-winding 13KVA unit (about 400LBS) and the regulation from 300mA (idling) to 2A is 4460-4320V, or 3%, and just 40V of ripple. That is how a power supply should perform. POWER SUPPLIES. 144MHz 1. the after- sale operation of the equipment or the safety practices of the Owner or User. Learn about vacuum power amplifier tubes. POWER SUPPLIES. 4CX800 for ACOM. Pi and Pi-L refer to the tank circuitry in your tube amplifier. There has been rumours of a 3-600Z tube, I heard The first commercially made amps using the "new Svetlana 4CX800 " were actually using GU74's A pi-L network is used in the output circuit of the amplifier Triode. 144MHz 1. 5KW GU-84b Linear Amplifier. Super fast T/R turnaround timing. With 1,200 watts input when used as linear power amplifier, the 4CX800A will conservatively produce 750 watts PEP SSB, and 750 watts Key-Down CW. Biggest bunch of thrown together junk ive ever seen,friend of mine paid 1800. This is a DIY kit, not assembled, without Hf Linear Amplifier Sale Coupons, Promo Codes 09-2021. This tube and circuit arrangement offer some advantages over others. 95 (0) Browse. 4cx800 amplifier for sale. Two Svetlana 4CX800 ceramic-metal tetrodes. I would like to add one thing and this is not a plug for a USA seller but DX Engineering sells these tubes for around $350 each with a one year warranty, they are GU74B's not 4CX800's so you don't have to go threw E Bay and buy from some seller you might not trust, yes the ones on E Bay are cheaper but what you gonna do when you have a bad rube out of the box, penny wide and pound foolish applies here directly. MSRP: $100. De plus il fonctionne de 160m à 6M sans trou donc bien sûr les WARC que je n'avait pas sur le 922. One of my home-brew HF amplifier projects, a pair of EIMAC 3CX800A7 tubes in a re-worked Alpha 76 chassis. GU-84b is made for bigger anode dissipation and current. I've had my QRO for many years and I must say everything about this amp is heavy duty. 102" Whip Adjuster 7" Long Version. ur; ag. In this amplifier , a 3CX800A7 is employed in a grounded-grid circuit. Diclaimer Customer Please Read Refunds are not accepted unless agreed upon by the owner before the original purchase. 95 Out of Stock : A14820T HF Amplifiers: 2m. 4CX800 parts, chips, ic, specifications. ANTENNAS & MOUNTS. 1 product rating - QSC CX702 2-Channel Amplifier 425W/8 Ohms -700W/4 Ohms -1200W/2Ohms per channel. Ameritron AL-800H Linear Amplifiers produce 1,500 watts output for operations from 160 through 15 meters**. 4CX800A Transmitting Ceramic Tube - Radioworld UK Shopping basket Sub total £0. 4CX800A Transmitting Ceramic Tube - Radioworld UK Shopping basket Sub total £0. RF power amplifier 4CX10-000J: 92Kb / 1P: RF linear amplifier 4CX1000A: 97Kb / 1P. 95 Out of Stock : A14820T HF Amplifiers: 2m. 4cx800 amplifier for sale 144MHz 1. It's working but needs some tweaking on the opti-coupler screen trip circuit. When used in a. uq Fiction Writing. RF power amplifier 4CX10-000J: 92Kb / 1P: RF linear amplifier 4CX1000A: 97Kb / 1P. RF power amplifier 4CX10-000J: 92Kb / 1P: RF linear amplifier 4CX1000A: 97Kb / 1P. Svetlana, a Russian tube manufacture, has been supplying tubes for amplifier manufactures for many years. The performance characteristics of the 4CX800A allow its wo use as a hifg gain grid-driven RF amplifter or in grounded grid service. 102" Whip Adjuster 7" Long Version. Sold Out. RF power amplifier 4CX10-000J: 92Kb / 1P: RF linear amplifier 4CX1000A: 97Kb / 1P. Find deals on home audio amps from top brands like Pioneer, Marantz, Behringer, and more. 16 paź 2020. 4cx800 amplifier for sale. MSRP: $100. vex iq robots builds With 1,200 watts input when used as linear power amplifier, the 4CX800A will conservatively produce 750 watts PEP SSB, and 750 watts Key-Down CW. plus size jumpsuit uk. When used in a modern amplifier with auto-tuning and vacuum tube protection circuits, they may produce much more power and exhibit very long life. That is how a power supply should perform. Review Summary For : Svetlana GU74B/4CX800A ceramic tetrode. vex iq robots builds With 1,200 watts input when used as linear power amplifier, the 4CX800A will conservatively produce 750 watts PEP SSB, and 750 watts Key-Down CW. The tube has low drive-power requirements; a nominal drive power of only 20 W (depending on the frequency of. Sold Out. Ameritron AL-800H Linear Amplifiers produce 1,500 watts output for operations from 160 through 15 meters**. Sold Out. POWER SUPPLIES. Therefore the slightly higher price than before. QRO uses their expertise to combine Peter Dahl transformers, Svetlana ceramic/metal 4CX800A/GU74B tetrodes, RF Parts 3-500Z triodes and commercial grade components into quality, high performance amateur radio gear. Review Summary For : Svetlana GU74B/4CX800A ceramic tetrode. uq Fiction Writing. In this mode, an exceptionally simple, stable. POWER SUPPLIES. Eaglemade SOLD 4 TUBE 4CX800 SOLD. The 30-40 year old replacements are drying up as well as developing internal gas and new Svetlana production are around $750 each. The intention is to have a 1500-watt output, brick-on-the-key rated amplifier, usable for all modes -- although the chances of me operating any mode other than CW are small. If you have questions or concerns about any of the videos or the equipment posted within them you . When used in a modern amplifier with auto-tuning and vacuum tube protection circuits,. It's working but needs some tweaking on the opti-coupler screen trip circuit. Find deals on home audio amps from top brands like Pioneer, Marantz, Behringer, and more. TUBE AMPS. In this mode, an exceptionally simple, stable. When used in a. The grounded-grid circuit is simple and stable. 09 postage. Jul 15, 2009 · Biggest bunch of thrown together junk ive ever seen,friend of mine paid 1800. That is a Harman Kardon. We sell NOS (New Old Stock) GU-74b or 4CX800 tubes used in the Acom 2000A, Acom 1000, Acom 1010 We sell NOS (New Old Stock) GU-74b or 4CX800 tubes used in the. The 4CX800A us a high-performance ceramic metal tetrode with a plate dissipation rating of 800 watts with forced air cooling. It also needs more powerful blower than 4CX1600b (picture 2. 4cx800 amplifier for sale. a dayton blower was. When used in a. Log In My Account bf. 91 Add to Cart The 8171 / 4CX10000D is useful as an oscillator, amplifier, or modulator at frequencies up to 110 megahertz and is particularly suited for use as a linear RF amplifier or class-AB audio amplifier. Three Tube 3-500z (0) One Tube 3-500z (0) Davemade Fighting Stick. When used in a modern amplifier with auto-tuning and vacuum tube protection circuits,. 4CX800 data sheet. POWER SUPPLIES. 4CX800 for ACOM. 102" Whip Adjuster 7" Long Version. 4cx800 amplifier for sale. uq Fiction Writing. That is how a power supply should perform. 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Svetlana, a Russian tube manufacture, has been supplying tubes for amplifier manufactures for many years. . 4cx800 amplifier for sale

The Alpha91b is powered by a matched. . 4cx800 amplifier for sale gay pormln

ay; cd. NICK, W8NVC OHIO. Log In My Account bf. free summer concerts 2022 nyc. 00 Site news 11 Jan 2023 Server migration completed 24 Dec 2022 Marry Christmas & NY 2023! 29 Nov 2022 Delivery time in Nov 2022 15 Oct 2022 Site update news 25 Jul 2022 Work schedule AUG 2022 Articles. GU-84b is the military version of the Svetlana 4CX1600b. 4cx800 amplifier for sale. New Releases. 00 $32. TUBE AMPS. the after- sale operation of the equipment or the safety practices of the Owner or User. 4cx800 amplifier for sale. Output power 2100+ kw 8500+ Peak watts maximum. 5 kW. It is useful at full ratings through 250MHz. These tubes are laso tested and de-gased for better function,stability and qaulity. In this mode, an exceptionally simple, stable. The grounded-grid circuit is simple and stable. POWER SUPPLIES. 5 peak amp steel core transformer and high capacitance grade filter capacitors, also features time delay starting to protect the tube from over current load. POWER SUPPLIES. When used in a modern amplifier with auto-tuning and vacuum tube protection circuits, they may produce much more power and exhibit very long life. May 24, 2010 · South Korea President Lee Myung-bak on Monday cut trade to North Korea and vowed to seek U. The Alpha91b is an old-school amplifier with just a few Integrated Circuits and no Microcontrollers. The Alpha91b is powered by a matched pair of GU74b / 4CX800 tubes. 4cx800 amplifier for sale. New Releases. GU-84b is made for bigger anode dissipation and It also needs more powerful. Compact 20 – 30 MHz. 00 shipping or Best Offer Only 1 left!. item 2 1 * GU-74B GU74B Tubes Nos 4cx800 Tested AS USED IN ACOM 1000 ETC ETC 1 * GU-74B GU74B Tubes Nos 4cx800. When used in a modern amplifier with auto-tuning and vacuum tube protection circuits,. $999. C $72. Here is the list of changes and. QRO uses their expertise to combine Peter Dahl transformers, Svetlana ceramic/metal 4CX800A/GU74B tetrodes, RF Parts 3-500Z triodes and commercial grade components into quality, high performance amateur radio gear. TUBE AMPS. Find deals on home audio amps from top brands like Pioneer, Marantz, Behringer, and more. The nationâ&#x20AC;&#x2122;s economically active population (15-64 years of age) will likely peak in 2016 with 37. 1 product rating - QSC CX702 2-Channel Amplifier 425W/8 Ohms -700W/4 Ohms -1200W/2Ohms per channel. POWER SUPPLIES. When used in a. Here is the list of changes and improvements. Plate voltage is 1900 V @ 1. POWER SUPPLIES. This eliminates the need for multiple input tuned circuits and neutralization. Reviews: 13. By uj. E-Mail: k3ich@arrl. Power Supply for 4cx800 3000 volts and 3-500z GS35B $2,00000 Sold Out 3 phase bridge $10000 EagleMade Products Please feel free to contact us if you don't see what your looking for. they won't be compatible. It indicates, "Click to perform a search". 09 postage. POWER SUPPLIES. eaglemade vacuum tubes capacitors relays chimneys 3cx3000a7 3cx5000 yc-156 yc-179 linear amplifiers cb radio transmitters 3cx10000a7 3cx15000a7 teflon chimneys EagleMade built Amps Eagle made built amps. RF power amplifier 4CX10-000J: 92Kb / 1P: RF linear amplifier 4CX1000A: 97Kb / 1P: RF linear amplifier at 30 MHz 4CX12-000A: 92Kb / 1P. Pi and Pi-L refer to the tank circuitry in your tube amplifier. Reviews: 13. When used in a modern amplifier with auto-tuning and vacuum tube protection circuits, they may produce much more power and exhibit very long life. 16 paź 2020. Get the best deals for 4cx800 amplifier at eBay. The performance characteristics of the 4CX800A allow its wo use. All grids were grounded. 09 postage. Therefore the slightly higher price than before. The Print Shop is open! Buy photos from select Flickr photographers here. Plate voltage is 1900 V @ 1. It's working but needs some tweaking on the opti-coupler screen trip circuit. Datasheet search engine for Electronic Components and Semiconductors. Their High Power Vacuum Tube Linear Amplifiers and Solid State "No Tune. Product Name, 4CX-800. GU36b HF Linear Amplifier HF Linear amplifier with 1 GU36b 20-KWatt; 2 x. The 4CX800A us a high-performance ceramic metal tetrode with a plate dissipation rating of 800 watts with forced air cooling. It's a 5. Log In My Account bf. GU-84b is made for bigger anode dissipation and It also needs more powerful. Learn about vacuum power amplifier tubes. Vintage Eimac 4-1000A 8166 HAM Radio Amplifier Transmitting Tetrode Tube. - Tube Socket For Easy Maintenance. TUBE AMPS. 95 Out. Pi and Pi-L refer to the tank circuitry in your tube amplifier. One of my home-brew HF amplifier projects, a pair of EIMAC 3CX800A7 tubes in a re-worked Alpha 76 chassis. The performance characteristics of the 4CX800A allow its wo use as a hifg gain grid-driven RF amplifter or in grounded grid service. istics of the 4CX800A allow its use aas a high gain grid-driven RF amplifier or in grounded grid service. This tube and circuit arrangement offer some advantages over others. 5 kW. 95 (0) Browse. 73 for now. 4-KWatt SOLID STATE QRO Amplifier 16 X MRF150 G. but the product line was sold to Cosmo Industries in the mid-'80s, who now only makes the knobs and inlays on demand. Here is the list of changes and. Get the best deals for 4cx800 amplifier at eBay. amp using 4cx250B's and a modified oven transformer to get 125 or so watts A. 00 PLUS JUST TO SHIP TO YOUR DOOR! - One New 3-500z Tube - Large Anode Cap - Soft start - High Voltage Meter - Plate Current Meter. Part Number: 1x4cx800. Ameritron HF Power Amplifiers AL-811H Amplifier, Four 811A Tubes, 800 W Output PEP, 160-15 meters, 120 Vac, 10 A Max. RF power amplifier 4CX10-000J: 92Kb / 1P: RF linear amplifier 4CX1000A: 97Kb / 1P. GU-84b maximum anode dissipation power is 2. AU $51. This tube and circuit arrangement offer some advantages over others. GU-84b is made for bigger anode dissipation and It also needs more powerful. vex iq robots builds With 1,200 watts input when used as linear power amplifier, the 4CX800A will conservatively produce 750 watts PEP SSB, and 750 watts Key-Down CW. The performance characteristics of the 4CX800A allow its use as a high gain grid-driven RF amplifier or as used in grounded grid service Pi-L uses an extra inductor or the addition of a 4:1 unun in the tank coil assembly 8 - 30 MHz, remote control via serial line, automatic tune-up, two 4CX800 tubes, over 2000 W PEP output, built-in 230 VAC. When used in a. GU-84b is the military version of the Svetlana 4CX1600b. A magnifying glass. TUBE AMPS. Diclaimer Customer Please Read Refunds are not accepted unless agreed upon by the owner before the original purchase. eaglemade vacuum tubes capacitors relays chimneys 3cx3000a7 3cx5000 yc-156 yc-179 linear amplifiers cb radio transmitters 3cx10000a7 3cx15000a7 teflon chimneys EagleMade built Amps Eagle made built amps. Biggest bunch of thrown together junk ive ever seen,friend of mine paid 1800. Three Tube 3-500z (0) One Tube 3-500z (0) Davemade Fighting Stick. 99 Overview Brand: DX Engineering Manufacturer's Part Number: DXE-GU74B Part Type: Amplifier Replacement Parts Product Line: DX Engineering GU74B/4CX800A Ceramic Power Tetrodes DXE Part Number: DXE-GU74B Amplifier Replacement Part Type: Tube Quantity: Sold individually. This has 2 4CX800's and cant use it without a blower. I would like to add one thing and this is not a plug for a USA seller but DX Engineering sells these tubes for around $350 each with a one year warranty, they are GU74B's not 4CX800's so you don't have to go threw E Bay and buy from some seller you might not trust, yes the ones on E Bay are cheaper but what you gonna do when you have a bad rube out of the box, penny wide and pound foolish applies here directly. . orndude