572b tube substitute Dec 16, 2012 · The Chinese 572B's are not the end of the world. Please see the substitutes at the top of the page for more details We would like to show you a description here but the site won’t allow us. Can be used in Ameritron AL572 or 572X, Collins 30L1, and Heathkit SB200 & SB201. take a look of my hard work. pdf (303488 bytes) 572B Svetlana T~ 572B. Conversations. Making use of expensive 572B tubes from China and left over 572B Svetlana stocks are reliable with the 811A amplifier applied high voltage. I own a AL-572 bought it used ran great for about four months then low output!I sent the amp in where I got it from they said nothings wrong just the tubes are a little weak so I had them replace the tubes(572b). org/ameritron-al-811-tube-upgrade-from-811a-t Aug 31, 2004 · On the 572B detasheet, they didn`t mention the amplification factor, the Rp and Vmax (continus). With the 572B tubes, the amp now puts out around 750 watts. pdf (43950 bytes) Bold designators are close or identical, Italic designators are different ratings, different pinouts or different filament voltages. 572B Scientific-Instrument T~ 572B. Electrical Characteristics Aug 29, 2017 · Upgraded the 811A tubes in my AL-811 Amplifier to 572B tubes. speleo. After I funis the tube amp will compare will the real one to compare the sound. Our role as a leading distributor and one of the most reliable suppliers ensures you get the parts you need when you need them. The valve is a hi μ power triode, used in many RF linear amplifiers. The labels that you see on them are probably indicative of condition; they would be derived by measuring the RF output power of a linear amplifier (probably while running only one tube) and noting how much power was available when the amplifier was driven with suitable driving We would like to show you a description here but the site won’t allow us. Just plug in and play, no changes required. The filament drain is the same. The amp produces 800w CW 10m, 850w CW Jan 16, 2020 · Greetings to crabby1 and the Forum: The 572B is a power triode intended for linear amplifier service in the HF bands. If your tester will set up for an 811, it will also test a 572B. Old tube making processes created wide variations in production, so testing and matching tubes into sets was required. Used in pairs, DX Engineering 572B tubes are capable of generating up to 600 watts of RF transmit power; quads will produce 1,200 watts. Joined 2007. 572b tubes products for sale | eBay amplifiers, these 572B tubes are a modern manufacturing version of the vacuum tube that has been around for a long time. Ameritron AL811 - I recently installed a set of 3 Cetron 572B tubes into my amp to test performance and compatibility. pdf (43950 bytes) 5730 NU They >> provided small >> metal tubes that carried low pressure air straight to the seals on the base >> and the grid. DX Engineering 572B Power Tube DXE-572B DX Engineering 572B Power Tubes are available for all-purpose Amateur Radio service. This is a suitable replacement for any 572B / 160L (US) tube type. Vacuum Tube Evolution. There are none available, so I must replace them with 811A tubes. item 3 572B Machlett Power Triode Matched Trio (3) Tubes CB Ham Radio 572B Machlett Power Triode Matched Trio (3) Tubes CB Ham Radio $324. It is their house brand of Chi-Com tubes but at least they test them before they sell 'em. 2010-06-28 11:56 am #9 2010-06-28 11:56 am #9 Ryazan still has SV811-X and SV572-X Inc 3-500Z tube specs, data sheet & substitute & equivalent tube info. 00 These tubes are the real deal and if found at a good price should be scooped up. An exception to this would be the Svetlana 572B (the real Svetlana, now SED) which is sometimes not a drop in replacement in some circuits (Yaesu FL2100B comes to mind). ELECTRON TUBES FOR INDUSTRY 572B POWER TRIODE The Penta Laboratories is a power triode designed for use as a RF Oscillator, RF Power Amplifier and audio frequency modulator. 1 Year Limited Warranty through RF Parts. 812 Tube. Now, each DX Engineering 572B tube is precision manufactured to a high standard, so Penta Labs power tubes are matched within a 5% variation on all parameters. Tubes can be visually inspected for obvious faults. Typical operating conditions in amateur service are a Va of 2,400 V and an output power from a pair of 400W. This is a process of eliminating tubes that test with bad values, rejecting those outside limits of design. com: 572B Tube Replacement 572B HiFi Audio Tube Amplifier kit DIY Matching Four-Way(2pcs Matched Pair) : Electronics I know Svetlana makes a 572B that is supposed to be >>fairly heavy duty, or so I've been told, but major circuit modifications >>are necessary to use that tube, so the Svetlana people tell me. TAYLOR is the preferred choice for FL2100, SB200/SB201, 10-160L, 30L1, etc. Please see the substitutes at the top of the page for more details. NOTE: These are NOT PSVANE or Shuguang tubes. Radio tubes are valves. The 572B has a much more robust anode design so can stand higher power outputs for longer periods without the risk of anode meltdown/short circuit. Free shipping on many items | Browse your favorite brands | affordable prices. 95 item 4 SHUGUANG 572 B Vacum Tube SHUGUANG 572 B Vacum Tube Ameritrons new class of Near Legal Limit Amplifiers give you nearly full legal SSB power output for 65% of the price of a full legal limit amplifier and no one will ever know the difference! You get 1300 Watts PEP SSB nominal power out on amateur bands 160-15M. mobile view. Ask for SV572 Series data. Estimated Ship Date: Tomorrow. com the 572B and 811A tubes operate in similar applications, though with 572B: 572B. If you buy this amp, you will encounter grave problems in finding replacement 572B tubes. The older tubes in general' and not just the 811A's' were better build. If you have lost one or more 572Bs in your Ameritron amplifier, or other service, due to filament failure or other problems, here's your replacement! Order your Ameritron 572B Replacement Final Tubes from DX Engineering and power-up that amplifier again! Warranty Others indicated they suspect the vacuum may be less than vintage transmitting tubes. The original tubes Sevtlana 572b-Made in Russia New tubes from Pentalabs Made in China told should be just as good as originals or Svetlana 572B Typical Performance Curves +10 +20 +40 +60 +120 +100 +80 +120 +100 +80 +60 +40 +20 +10 Versions of the 572B designed for audio amplifier service are available. Due to datasheets that do not list the same conditions as Western made 572B power tubes, we are uncertain if the Shuguang 572B has the same maximum ratings as USA made tubes. I only sold the amp because my wife purchased me an ICOM PW-1 Solid State Amplifier as a Retirement gift. 572B's should last a lifetime in that amp if the tubes are not abused. %PDF-1. e. 4. New Current Production ** No returns, however Defective Tubes will be replaced free of charge for 13 months** DX Engineering 572B Power Tube DXE-572B DX Engineering 572B Power Tubes are available for all-purpose Amateur Radio service. The 572B is an indirect descendent of the 811 tube. These 572B replacement tubes deliver consistent performance and long service life. These 572Bs are a modern version of the venerable vacuum tube that has been around for a long, long time. electron Tube Data sheets - 5. About the time I ordered the RF tubes, I found three new RCA 811 A's for $110. They say that the tube can handle 2750Volts in ICAS. Penta Labs power tubes are matched within a 5% variation on all parameters. Max plate current rating is about the same for both tubes, and the 572B (also known as the T160L) has a slightly higher mu. I would not hesitate to buy another 572B: 572B. It is a better-tested substitute for the Ameritron 380-0500GT and other 3-500 tubes. 1 day ago · Penta Labs power tubes are matched within a 5% variation on all parameters. There are currently just two plants, both owned by the Chinese, manufacturing 3-500 tubes. Examples are the KW1000 and Yaesu FL2100. But do a derating factor of about 75% could be fine for a Continus service (around 2000V) RF Parts has a good name, as does K5SVC who sells Machlett tubes. The tubes last many years and some date back to the 1960s still producing full power output. The AL811 tube is a descendent of the 812 tube. S. Various brands. About Get the AL-811HD with 572B tubes AL-811HD gives you the AL-811H with four 572B tubes installed. info@pentalabs. Personally I would use the 572B's simply because the 811A's are already being run beyond their ratings even when ran according to Ameritrons specs. amateur. >> >> 73 >> Bill wa4lav >> At 04:32 PM 12/6/2011 -0500, Carl wrote: >>> The SB-220 cools the filament pins One of the 572B tubes went sour and had to be replaced. One feature of vacuum tubes is the "getter". I still find NOS available and are worth over $200 for the pair. Tube Substitutions for: 572B Transmitting Triode, air cooled Substitutes Base Diagram; 572B: T160L, 572A: Web References: 572B (Scientific-Instrument) @ Franks Each RF Parts Company 572B is tested by the Engineering Staff at RF Parts Company in San Marcos, CA USA. >Svetlana 572B and 811A tubes apparently exhibit more VHF gain than other >manufacturers' tubes. Considering the negative reviews of these tubes, either the quality coming from the manufacturer has improved, or I just got lucky and obtained a good set. radio. Four 572B tubes give you m COMMON TUBE FAILURES AND TUBE REPLACEMENT IN THE SB200. Mechanical Application Mounting: The Svetlana 572B may be operated with its axis vertical and the base down, or horizontally with pins 1 and 4 in The 572B is a direct replacement for the 811A, but has a Graphite Anode for increased performance and reliability. Next to the RCA tubes, the Taylor look to be the best value for your money, but there is a noticeable difference. 5 %µµµµ 1 0 obj >>> endobj 2 0 obj > endobj 3 0 obj >/ExtGState >/Font >/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 594. One way to tell a tube is bad is to put it in a tube tester. Four rugged 572B tubes give you near legal limit power 572B-TAY-VERT - Transmitting Tube, Taylor (Vertical Mount Only), 572B-TAY - Transmitting Tube, Taylor, 572BMQ-TAY- Matched Quad Taylor 572b Tubes, 572BMP-TAY As trusted USA and global vacuum tube manufacturers, we connect businesses with top-quality electronic components. thx thomas 572B tubes are found in several new Ameritron Amplifiers, including the celebrated AL-572 and the AL-811HD. 572b Tube Substitute; RF Parts: The 572b tube; Gi7b Amplifier; Results are below: Toroidal Transformer for 4 x 572B amplifiers 230V primary; Loading 572B Tubes for FL2100-B; HF linear amplifier AL-572 for amateur radio Jun 17, 2012 · Well I owned an Ameritron 811H for many years & it performed very well. The 572B can handle up to 2400v plate, vs 1500v for the 811. New Current Production ** No returns, however Defective Tubes will be replaced free of charge for 13 months** In most applications these can also be used as a direct replacement for the 811A. Grid Overload Protection protects the tubes from excessive grid current due to mistuning and it protects against excessive drive power. Whether you choose multiple, or a single 572B tube for sale, know they undergo rigorous testing before shipment to ensure optimal functionality in your application. All Penta Laboratories tubes are burned in before testing and matching at their Testing Facility in Ventura, California. It probably pays to pay the 'tested tax' if you are in NA, however. I would try to find some NOS 811A's from Cetron or RCA. 96 842. 04] /Contents rec. Now, each DX Engineering 572B tube is precision manufactured to a high standard and matched sets are no longer needed. All in all, the 'new design' 572B tubes appear to be a better product than previous Chinese generations. 572B Pair Matched Vacuum Tubes, Power Triode, Direct replacement for the 811A, Set of 2. This several month I was busy clone the Ongaku Kondo 211 tube amp. hardsoft products. They ran a bit cooler but for the difference in cost I much preferred the Chinese 811A tubes. They are virtually an exact replica of the original Cetron 572B / T160L tube. Feb 20, 2022 · For those who will accept an 811A tube, RF Parts also has Svetlana 811A tubes at about half the price of the 572B tubes. Jun 7, 2021 · I would like to change to the 572b tubes but finding a good tube at a fair price seems to be difficult. The RCA's have such great quality. com. Mar 11, 2007 · 572B is a lot more rugged, and generally is a drop in replacement for 811A. The 572B is a replacement valve for the 811 transmitting tube. Price is for a Single Tube This is a suitable replacement for any 572B / 160L (US The 572B is a direct replacement for the 811A, but has a Graphite Anode for increased performance and reliability. Another option is the G-811 tube, equivalent to the 811A, manufactured in the Soviet Union before it collapsed. These tubes will serve as Cetron 572B are the best tubes money can buy. Also the plate rating is up to 160w vs the 811A's 65w rating. If those are unobtainable then get the Taylor 572B's from RF Parts. Mar 29, 2001 · a pair of Raytheon 572B/T160L to replace the 811A. New Command Technologies 3-500 graphite anode tube, also called 3-500ZG and 3-500C for sale. Most major Ham supply shops seem to be out of stock and there are many reports of Chinese tubes performing well for a very short time and dropping off a cliff with power not long down the track. Jun 26, 2010 · NONE OF THESE TUBES ARE COMPATIBLE WITH THE 572B. However, I just realize that the article I read is refering to Svetlana 572B! I am wondering if it is safe (i. 81 out of 5 stars. Unfortunately, the tubes have fallen out of production many years ago. No modifications were made to the amp - simply replaced the original tubes with the 572B's. We would like to show you a description here but the site won’t allow us. I'll dig through by tube stash and see if I have anything good. MY friend was a real Ongaku Kondo user. Low cost Heavy Duty replacements for original 811A tubes. They have proven themselves in all kinds of amateur, commercial, and military service. They are also common in a wide range of vintage RF amplifiers. The 812 was a moderately low mu tube, primarily intended for grid driven modulator service. Throughout history, to speed development and reduce tooling costs, newer tubes use tooling from older tubes. Get a higher power tank circuit and grid overload protection. without damaging the MD-811)? Furthermore, is any 572B a direct substitute (electrically) for 811A? The modern TAYLOR 572B is virtually an exact copy of the original TAYLOR 572B/T160L tube. equipment. com Direct Substitutes: 811; 811-A; 572B (with slight modifications) 572b - transmitter valve - power triode also known as t160l, it can also be used as a better substitute for the 811a tube. These high-quality tubes will serve as direct replacements in any 572B RF amplifier or modulator and are ideal for upgrades. Base indexed and internal structure aligned and supported for both horizontal and vertical operation. These tubes will serve as Apr 15, 2005 · Both lines of thought are valid. Feb 27, 2020 · Ameritron AL-811HDXCE with four 572B tubes installed; 572B Spec Svetlana; Evolution of the Chinese 572B tube; 572B ~New~Made In The China~Amplifier~Tube~Valve~Vacuum~60 Day Guarantee~Radio; 572b tube substitute; 572B Preamp Vacuum Tube / Electronic bile duct Inc 811A tube specs, data sheet & substitute & equivalent tube info. Great quality 572-B vacuum tube for use in Class AB2, Class B, Class C RF, and audio amplifiers. The 572B tube has been a proven performer in Amateur, commercial, and military service. The 811A tubes are hit & miss. I searched the internet, made phone calls, and called friends. >> I guess they were intended to be used as a upgrade for 450T transmitters >> using same sockets >> and physical size. I replaced the 811A tubes with 572B tubes & saw no advantage & they lasted half as long as a set of 811A tubes. High-mu power triode for use in Class AB 2, Class B, Class C RF, and audio amplifiers. Part Number: PLB-572B-2. actually I hadn't DIY 572B tubes, but I had diy, 845,805,211,KT1610,WE4212 & coming will New Emission Lab 520-V3. These are brand new Thomson CSF tubes and have proven to date to have excellent performance and really low failure Get the best deals on 572b tubes when you shop the largest online selection at eBay. A high grade 572B replacement from Asia has not come forth despite the rumors. The 572B is a direct replacement for the 811A, but has a graphite anode for increased performance and reliability. pdf (303488 bytes), 572B. Tube 572B or Röhre 572B ID6385, Transmitting Triode, air cooled, and shown. More about this upgrade on my website:http://kn6q. Member. The friend who Oct 10, 2024 · Amazon. Each passing vacuum tube is then tested on a fleet of WT-100A original RCA production testers for plate current, screen current and transconductance (gm). pkpl fixcn rreuoqv sdotx xfgji gcqisshb tyki njntp zwuy jjyu