vacuum tube date codes. (and later Simonstone Works Ltd. (March, 1986) Amplitrex AT1000 tested in fixed bias … Find many great new & used options and get the best deals for 6U8A 6AX8 6KD8 5KD8 Tubes Pair (2) NOS MATCHING DATE CODES GE TESTED at the best online prices at … All of these tubes are covered under product codes GIM and JKA and were added to the section 506J . Find many great new & used options and get the best deals for PAIR TESLA 6Z31 NOS (EZ90 6X4 U78) Rare Foil Getter, Welded Plates, McIntosh C20 at the best online prices at eBay! Free shipping for many products! Here is how I would rank all of these tubes 1st – Raytheon 5751 2nd – Sylvania 5751 3rd – Tung-Sol 5751 4th – ITT 7025 5th – CBS 5751 6th – RCA Blackplate 7th - GE 5693 8th - Arcturus 5751 9th - Sylvania 12AU7 I would recommend all of these tubes except for the last one on the bottom. do NOT contact me with unsolicited services or offers; post id: 7604839160. Menu. 00 0 bids $14. NEW and NOS. Expired tubes should be discarded because out-of-date tubes may have decreased vacuum . 00 0 bids $11. 1MB) Tube data section 3- 6U4 - 12SR7 (3. $19. $85. Lot of (11) 6L6G Vacuum Tubes. It includes all models from 1929 through and including 1938 models. Entdecke 100x 6N2P-ER=12AX7=ECC83 audiophile Dual Triode Röhren Neu aus altem Lagerbestand Codes in großer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung für viele Artikel! Vintage Tubes & Tube Sockets Auction Catalog; Matched Trio (3) NOS NIB GE 12AX7 / ECC83 Vacuum Tubes Matched Date Codes; Matched Trio (3) NOS NIB GE 12AX7 / ECC83 Vacuum Tubes Matched Date Codes Sold by wsstef | Ends on 2023-04-06 17:46:37 . Here are some examples and a list of common USA EIA codes. The JAN order may have been unexpected, so they tested and labeled what they … Entdecke 100x 6N2P-ER=12AX7=ECC83 audiophile Dual Triode Röhren Neu aus altem Lagerbestand Codes in großer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung für viele Artikel! USA codes will always be in the form of 3 or 4 numerical digits. "D" stands for VALVO/Hamburg, "B" for Mullard Blackburn Works Ltd. And another is like this: 322 6104-1 322 is Tungsol, 6104 is 1961, 4th … The best information available indicates that the codes began to appear around 1962 or 1963. 00 shipping 7d or Best Offer Type 83 rare HICKOK LABEL Rectifier Vacuum Tube, Tests Strong & Ballanced $49. 1940-41 Date Codes:Ken-Rad, Sylvania, Raytheon Date-code information from a Stewart-Warner Corp. Bulk-packed (OEM) TUBESalso carried an "E"; individual-packed (distributor). USA codes will always be in the form of 3 or 4 numerical digits. It should be noted that the term ‘VT-231’ was simply an … Code chart for Tesla tubes from 1947 to the end 1984, Vacuum tubes, Capacitors, Nixie Tubes, Indicators, VFD display, LED, Sockets. NOS 5 Sylvania JAN 6189 12AU7 WA Tubes Military Spec Date Code Match A10-67 USA. 95 + $5. xf2indicates either the Blackburn Works in the U. An initial letter (A through L, including I) gives month, followed by the last digit of the year. A. 00 . 12D4 - Diode (1 total: General Electric) 6AL5 - Dual diode (General Electric) 12CX6 - Pentode, Sharp-Cutoff (RCA) 5X8 - Triode-Pentode (3 total: General Electric, Sylvania, and Philco) Les meilleures offres pour Paire de tubes General Electric 2 - 6CD6GA GE dates assorties testés avec photos ! sont sur eBay Comparez les prix et les spécificités des produits neufs et d 'occasion Pleins d 'articles en livraison gratuite! Sold by wsstef | Ends on 2023-04-06 17:46:37. It belongs to a large family of dual triode vacuum tubes which share the same pinout ( RETMA 9A). ) type, place of manufacture or country of origin in the case of bought in valves, and the date f o manufacture. black plate. Commitment | WE … Among the EIA codes that you will find on Sylvania-manufactured tubes are 312 and 722. 12. 17) Posted by jdyer on 2004-05-25, 05:47:24 (24. Hi-Fi News Reviews 91E Amplifier / →. [1] Unbeatable prices on thousands of guaranteed vacuum tubes for sale, vintage NOS hi-fi audio tubes, radio tubes, ham and industrial ready to ship. The 6350 was registered in December 1953. made … 231 = Machlett 247 = National Union 260 = Philco 274 = RCA (Radio Corp of America) 280 = Raytheon 310 = Superior Tube Co 312 = Sylvania (Hygrade Sylvania … Voice Phone 847-496-4546, Monday-Friday 8AM to 4PM USA Central Time. The code 5839, for instance, would describe the year 1958 and the 39th week. Of Private-brand tubes generally used a shipping date code of two or three characters. Unfortunately, the … All the tubes have a date stamp of 1R. all the tubes have two-digit date codes arranged vertically as follows: 65 24 64 I saw an o . 99 $7. USA & International; Australia; Canada; France; Germany; The 12AU7 and its variants are miniature nine-pin (B9A base) medium-gain dual triode vacuum tubes. 09. Condition New … Library — Western Electric - Maker of electron tubes and high fidelity. 175662507500. JAN … Find many great new & used options and get the best deals for NOS STC 4242A CV25 VT4C 211 Vacuum tube In Excellent Condition at the best online prices at eBay! From left to right (top row), we have (1) Sylvania “Bad Boys” (non-JAN) with matched date code, (2) more Sylvania “Bad Boys” (JAN) again with matched date code, (3) very non-exclusive Sylvanias I think from the 60’s, but I don’t actually know, and then (bottom) (4) Sylvania 6SN7W. 09 + AU $111. I will also get into 188 is General Electric. 188 is General Electric. the one tube in particular has 12AX7 with "J5V" written below it (in grey) and then printed on the tube in the old Sylvania yellow military lettering is JHS 12AX7 with the letters 552 vertically down the side. Some of … Vintage Tubes & Tube Sockets Auction Catalog; Matched Trio (3) NOS NIB GE 12AX7 / ECC83 Vacuum Tubes Matched Date Codes; Matched Trio (3) NOS NIB GE 12AX7 / ECC83 Vacuum Tubes Matched Date Codes Sold by wsstef | Ends on 2023-04-06 17:46:37 . 00 shipping 2 NOS Matsu Japan 6DJ8 - Sealed NIB! - ECC88 $95. 00 Only 1 available … I66 – 1970-1972 mC2 – 1955-1956 mCN – 1954 – 1955/6 mCA/mCB – 1956-1958 mC5 – 1957 mC6 – 1958-1959 I61 – 1959-1960 … Then around the 1950's they started dating the tubes with the week and year. 4% similar) If there happens to be any problem with shipping your item, you will notified by email immediately keep updated. They are pulled from unused replacement modules from Canadian Armed Forces equipment. A ruggedized/extended ratings version of the tube is designated 6N1P-EV(Russian: 6Н1П-ЕВ). USA Tube Codes You are here: Home > USA Tube Codes Amperex (USA) 111 Bendix 125 DuMont 158 Eimac (Eitel-McCullough, Inc) 162 Electronic Tube Corp 169 General Electric Co (USA) 188 Hytron (CBS-Hytron) 210 Machlett 231 RCA (Radio Corp of America) 274 … Looking for date code info on early Sylvania 12AX7s. Free shipping. Some of the 1950's codes omit the first 5 and are simply three digit codes. If your tube has these codes on it, you can get they’re USA tubes. Worldwide … The first two characters signify the tube type, in this case ‘I6’ indicates the tube is an ECC83. The 12AX7WA/WB/WC types hold up better than other 12AX7 tubes in cathode follower circuits where the maximum cathode to heater rating of 100 volts is often exceeded. 6146 Tubes 6AS7 Tubes 6BM8 Tubes 7027 Tubes 7591 Tubes 7868 Tubes 211 Tubes 807 Tubes 845 Tubes Big Powers Tubes Rectifier Tubes 5AR4 / GZ34 Tubes 5U4 Tubes 5Y3 Tubes 6CA4 / EZ81 Tubes 6X4 Tubes Other Rectifier Tubes Other Tubes By Leading Number Clearance - Bargains - Scratch and Dent Ham Radio - RF - Industrial Tubes … Tube Type / Number: KT88 [6550] Actual Brand*: Genalex Printed Brand: GEC Quantity: 2 Pieces - Matched Pair Matching Date Codes? Yes Plate Construction: Black Getter Construction: 3 O Country of Manufacture: England Visible Date Codes: 7420 Z (1974) Lettering Condition: 100 Percent Number of Mica Spacers: 2 Mica Spacer Shape: Pair of Matsushita (Amperex lbl) 12AX7A ECC83 NOS NIB Vacuum Tubes - 8% matched $120. 00 shipping Vintage Tubes & Tube Sockets Auction Catalog; Matched Trio (3) NOS NIB GE 12AX7 / ECC83 Vacuum Tubes Matched Date Codes; Matched Trio (3) NOS NIB GE 12AX7 / ECC83 Vacuum Tubes Matched Date Codes Sold by wsstef | Ends on 2023-04-06 17:46:37 . 95 postage. 59. 95 $8. TC Tubes specializes in precision testing and matching of vintage and new production vacuum tubes for guitar & bass players, audiophiles, and DIY tube audio . Here are photographs to illustrate the wide diversity of companies that Sylvania manufactured for… (Above: These tubes all … The first digit indicates the basing arrangement as follows: 1 Miscellaneous 2 Miniature 10 pin 3 International octal 4 Miniature 8 pin 5 Magnoval 8 Noval (9 pin miniature) 9 Miniature 7 pin The remaining digits are the sequence number. Very nice and clear their system of letters combined with numbers, like "U5", when "U" stands for the years 1937,1952, 1967. If the tubes have square or "D" getters, they would be early production 39th week of 1953, but if they have halo getters, 39th week of … Find many great new & used options and get the best deals for 6U8A 6AX8 6KD8 5KD8 Tubes Pair (2) NOS MATCHING DATE CODES GE TESTED at the best online prices at eBay! Free shipping for many products! Les meilleures offres pour Paire de tubes General Electric 2 - 6CD6GA GE dates assorties testés avec photos ! sont sur eBay Comparez les prix et les spécificités des produits neufs et d 'occasion Pleins d 'articles en livraison gratuite! Private-brand TUBESgenerally used a shippingdate codeof two or three characters. I am mainly going to cover 12AX7/ECC83 and 5751 type pre-amp tubes and EL84/6BQ5 power tubes: since these are some of the most popular and in demand tubes for guitarists and audiophiles. They're quite rare, though, compared to Mullard xf2s or RFTs of similar vintage, for example. The only NOS valve dealer … Entdecke 100x 6N2P-ER=12AX7=ECC83 audiophile Dual Triode Röhren Neu aus altem Lagerbestand Codes in großer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung für viele Artikel! The Philco Tube Manual can help identify unknown Philco radios chassis. 17mm Block PLates and slant D getter. 4MB) Tube data section 4- 14A4 - 5722 (1. VINTAGE 1970 MULLARD Blackburn UK 12ax7 ECC83 Vacuum Tube Guaranteed! I63 - $73. Used them one time for a few minutes. Vintage Tubes & Tube Sockets Auction Catalog; Matched Trio (3) NOS NIB GE 12AX7 / ECC83 Vacuum Tubes Matched Date Codes; Matched Trio (3) NOS NIB GE 12AX7 / ECC83 Vacuum Tubes Matched Date Codes Sold by wsstef | Ends on 2023-04-06 17:46:37 . Testing Vacuum Tubes with a Tektronix Model 576 … NOS 5 Sylvania JAN 6189 12AU7 WA Tubes Military Spec Date Code Match A10-67 USA. Sylvania. NOS SYLVANIA JAN 6189/12AU7 VACUUM TUBE, W/GRAY PLATE, O GETTER, TV-7 TESTED. Home; wsstef Auction Catalog; Vintage Tubes & Tube Sockets Auction Catalog; Matched Trio (3) NOS NIB GE 12AX7 / ECC83 Vacuum Tubes Matched Date Codes RCA 12BH7A Vacuum Tube Nos April 1968 BY Date Code Nib Tested | Consumer Electronics, Vintage Electronics, Vintage Audio & Video | eBay! WATTS TUBE AUDIO Pristine Matched pair of NOS JAN Philips ECG 6922 vacuum tubes with original boxes. JAN … tubesand low-voltage tubes Amperex: 1958 Amperex tubes catalog, with short data (743kB PDF file) 1959 Electron Tubes and Semiconductorsshort-form data (16MB PDF file) 1963 Electron Tubesshort-form data (9MB … Find many great new & used options and get the best deals for 6U8A 6AX8 6KD8 5KD8 Tubes Pair (2) NOS MATCHING DATE CODES GE TESTED at the best online prices at eBay! Free shipping for many products! Le migliori offerte per Tubo aspirapolvere vintage testato forte Webcor ECL86/6GW8 Germania sono su eBay Confronta prezzi e caratteristiche di prodotti nuovi e usati Molti articoli con consegna gratis! Etched codes are as follows: : xf2 B9H2 : xf1 B1E2 : xf1 B1F4 : xf2 B0L2 : xf2 B2D3 xf1coding indicates Mullards made in the Blackburn Works, in the U. 322 is Tungsol, 6104 is 1961, 4th week, 1 is the shift code (1 would probably be the day shift) After about 1960, many tube manufacturers went to encrypted alphabetical date codes. e. I will also detail long vs. Then around the 1950's they started dating the tubes with the week and year. ; there're many more factory-code symbols. Note that signal pentodes and tetrodes that end in even numbers are sharp cutoff. JAN … The Vacuum Tube by Ludwell A. For example, U9208811: U= Ulm, West Germany Day=reverse the … RCA 12BH7A Vacuum Tube Nos April 1968 BY Date Code Nib Tested | Consumer Electronics, Vintage Electronics, Vintage Audio & Video | eBay! IP MATCHED QUAD of Mullard EL34 6CA7 Xf1 OO-getter Vacuum Tubes - $1,945. FOR SALE! RARE Electrically and physically Matched pair of NOS Sylvania 6L6GA Vacuum Tubes 175663503896 RCA 12BH7A Vacuum Tube Nos April 1968 BY Date Code Nib Tested | Consumer Electronics, Vintage Electronics, Vintage Audio & Video | eBay! Find many great new & used options and get the best deals for 6U8A 6AX8 6KD8 5KD8 Tubes Pair (2) NOS MATCHING DATE CODES GE TESTED at the best online prices at eBay! Free shipping for many products! where 322 is the manufacturer code (in this case Tungsol), 59 is the year (1959), and 04 is the week. JAN … Tube dates to 1970 and has a date code of I63 B0H2. They both come in their original boxes and the metal base on tubes shows some staining from being stored. When you find a repackaged CBS Hytron tube, you will most commonly find 6SN7GT and 6SL7GT. Tubes and Tube Codes 07-09-2018, 04:50 PM Thought I’d start this thread in order share what is known about manufacturing codes and who made what tubes for … Les meilleures offres pour Paire de tubes General Electric 2 - 6CD6GA GE dates assorties testés avec photos ! sont sur eBay Comparez les prix et les spécificités des produits neufs et d 'occasion Pleins d 'articles en livraison gratuite! Le migliori offerte per Tubo aspirapolvere vintage testato forte Webcor ECL86/6GW8 Germania sono su eBay Confronta prezzi e caratteristiche di prodotti nuovi e usati Molti articoli con consegna gratis! Find many great new & used options and get the best deals for 6U8A 6AX8 6KD8 5KD8 Tubes Pair (2) NOS MATCHING DATE CODES GE TESTED at the best online prices at eBay! Free shipping for many products! Tube complement list for all U. S. AU. From same case and with the same date codes of: 3/86. The vacuum tube business was a very incestuous one, so much so that you can rarely trust … If you find the tube in North America, dating the European code is correct. Worldwide shipping. One Tung-Sol 955 inspected was coded with the "MR" symbol, for civilian "maintenance and repair" use! which supplied a tube sold under the names Philips/VALVO/Mullard can be read off from the PVM date-code: e. 7An initial letter (A through L, including I) gives month, followed by the last digit of the year. Current Bid: USD 179. Entdecke 100x 6N2P-ER=12AX7=ECC83 audiophile Dual Triode Röhren Neu aus altem Lagerbestand Codes in großer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung für viele Artikel! Find many great new & used options and get the best deals for 6U8A 6AX8 6KD8 5KD8 Tubes Pair (2) NOS MATCHING DATE CODES GE TESTED at the best online prices at eBay! Free shipping for many products! These tubes have been reproduced, and without knowledge of what the 1950s and 1960s tubes looked like, you can spend a large sum on a later Russian version, or even a deliberate … Date HS Code Description Origin Country Port of Discharge Unit Quantity Value (INR) Per Unit (INR) Nov 22 2016: 85389000: GCE7004813P0167 BRAZING DISK- VG6 (PART OF VACUUM INTERRUPTER TUBE) Germany: Bombay Air Cargo: PCS: 2,000: 217,344: 109: Nov 22 2016: 85389000: GCE7004813P0151 BRAZING DISK- VG6 (PART OF … Vintage Tubes & Tube Sockets Auction Catalog; Matched Trio (3) NOS NIB GE 12AX7 / ECC83 Vacuum Tubes Matched Date Codes; Matched Trio (3) NOS NIB GE 12AX7 / ECC83 Vacuum Tubes Matched Date Codes Sold by wsstef | Ends on 2023-04-06 17:46:37 . European codes can be a bit dating difficult to decipher. … 32 factory code is Vrchlabi. AU $41. Wholesale & retail trade. I guarantee 100% quality of tubes. 3 Digit 280 Code = … NOS 5 Sylvania JAN 6189 12AU7 WA Tubes Military Spec Date Code Match A10-67 USA. g. org 5998 Upload & Info » My Tube/Semi » 5998 You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. Also some tubes have a logo. Yes, 500 is laughable for a quad of later Teslas. (Below -- I borrowed a photo of a 350B with the 713 date code, meaning 13th week of 1957. NOS MATCHED PAIR 2 Sylvania 6L6GA 6L6 Vacuum Tubes Coke Bottle Same Date Codes - $204. matched pair: Amperex 7316 vacuum tubes new old stock excellent condition - just a hint of wear on the silk screening made in Holland original boxes matching date codes (62-19) matched gm U shaped getter rings 7316 is a premium 12AU7 / ECC82 tube Actually, 01A was already on my watch list, so I guess that's good. Gold Hill, OR 97525-9626 . AKT and AKU are probably commercial (hidden) date codes, a month apart. , such as: … The CBS Hytron (EIA) code number is “210”. The third character signifies production changes that were made to the tube over the years, for example ECC83 … 2x Soviet Vacuum tubes! Has military rhombus stamp. The latter … 5998, Tube 5998; Röhre 5998 ID5957, Double Triode | Radiomuseum. and "5" stands for the fifth pair of months (of the six pairs per year), so … Find many great new & used options and get the best deals for 6U8A 6AX8 6KD8 5KD8 Tubes Pair (2) NOS MATCHING DATE CODES GE TESTED at the best online prices at eBay! Free shipping for many products! 5960-060-6565 Raytheon Matched Pair Of Nos Vacuum Tubes Both Dated Tested (30. 12AU7 is also known in Europe under its Mullard–Philips tube designation ECC82. RCA Vacuum Tubes, RCA Vintage NOS Tubes, RCA Vintage Tube Amplifiers, Vintage Tubes & Tubes Sockets, Tube Amplifiers, Mullard Vintage Tubes & Tubes Sockets, Code chart for Tesla tubes from 1947 to the end 1984, Vacuum tubes, Capacitors, Nixie Tubes, Indicators, VFD display, LED, Sockets. AU $235. One alternate scheme is: 274 940 274 is the EIA code … RARE NOS Matched Pair 2 Bendix 5992 6V6GT Vacuum Tubes Same Date Codes $499. 5 is the plant code (in this case, Owensboro, Kentucky). Sibley 102 McDonough Rd. 50 shipping 4d 12h or Best Offer 2 Sealed Box 7DJ8 Matushita Japan Tubes - Linear 6DJ8 ECC88 HiFi Audio … Entdecke 100x 6N2P-ER=12AX7=ECC83 audiophile Dual Triode Röhren Neu aus altem Lagerbestand Codes in großer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung für viele Artikel! NOS 5 Sylvania JAN 6189 12AU7 WA Tubes Military Spec Date Code Match A10-67 USA. 00 shipping. Here is an example: In this example, you see three 6SN7GT manufactured by … You only need the first letter and the first 5 digits to determine the factory and the manufacture date. I'd like to know the date for those. , 3226441-3 would be as follows: with 322 being Tung Sol's id, then 64 would signify 1964 and 41 would be … NOS 5 Sylvania JAN 6189 12AU7 WA Tubes Military Spec Date Code Match A10-67 USA. There are numerous examples, however, of codes being used throughout the 1970’s and there is one date certain model that shows a code in 1982. 55 postage. K. It really depends on what type of music you … For the most European tubes made after 1955 date codes are located on the bottom of a side wall of a tube (not always the case) Location of tube date code In this case it’s B0D (this is for Mullard, Blackburn – 1960 – April) The code is broken down into 3 or 4 characters. FOR SALE! Tube dates to 1970 and has a date code of I63 B0H2. Since this radio is completely untouched- original cord, caps, everything, I was hoping the dates on the tubes would give a clue about when this radio was made- down to the month, that is. The Sylvania has a date code of 2ZR. sevice bulletin. made, how to decipher tube codes, and most importantly, how they sound. Les meilleures offres pour Paire de tubes General Electric 2 - 6CD6GA GE dates assorties testés avec photos ! sont sur eBay Comparez les prix et les spécificités des produits neufs et d 'occasion Pleins d 'articles en livraison gratuite! 219 Share 7. Both have same date code and are only two numbers apart in serial number. Both tubes tests as new with low noise. ones did not. The code is sometimes preceded by the first letter of the factory (“B” for Berlin or “U” for Ulm) … Tube data section 1- 0A3 through 6B4G (3. short plate and gray vs. 05 + AU $29. JAN … The VT-231 (‘Vacuum Tube #231’) designation was used throughout WWII by the US Army Signal Corps. "GE" 955s are found with either a GE date code, or an RCA code suggesting purchased product. Fortunately, most quality made tubes had genuine date codes printed (or scribed) on the tube with the better ink making it much easier to identify 'real' NOS tubes. Matched Quad (4) Sylvania USA 7C6 Black 3 Mica Vacuum Tubes 78%. If you find the tube in Europe, assume the USA code is correct. FOR SALE! Date codes Xf1 B0K4 (x2), Xf1 B0F4, Xf1 B1D4. And another is like this: 322 6104-1. ), ">" for Visseaux/france, "-" for Amperex/NY, an inverted "T" for Telefunken etc. SYLVANIA JAN 6189 W 12AU7 ECC82 VACUUM TUBE 1977 LONG PLATE SINGLE SWEET . 176) I recently bought some Sylvania 6SN7GT's which are tall bottle with heavy top flashing, green print on base. 2MB) Tube data section 2- 6BA5 - 6T8 (3. 85 shipping or Best Offer ECC82 Tesla Tube, Disk Getter, NOS, Rare, 1960 $29. They are reported to have been phased out in the late 1960’s. 69 32 is 1969, 32nd week. 9K views 2 years ago I have recently purchased, off Ebay, a pair of beautiful 4-400A's. You will find thousands of tubes or valves with interesting links. . Three letter, two digit date codes From 1930 to 1968, Telefunken used a 2-letter code to identify the date of production. The data tables and chassis … NOS 5 Sylvania JAN 6189 12AU7 WA Tubes Military Spec Date Code Match A10-67 USA. Apart from the interest of knowing when and where a valve was made, …. Beautiful quad of 225487463216 1: Sylvania 6SN7 two-digit date codes (17. Scroll down this page to the yellow navigation bar to navigate our website! NOTE: NEW DAYS OF … 1237658281 DATE CODE ON SYLVANIA TUBE I have a sylvania 6189w tube,the numbers from top to bottom are 6727,does anyone know when this was made? THANKS yogiboy 03-21-2009 10:58am 2 responses Add your response Collapse all responses Sort Log in to respond Find many great new & used options and get the best deals for NOS Matched Pair JAN Philips ECG 5Y3GTA Vacuum Tubes Same Date Codes at the best online prices at … DATE (AND DESTINATION) CODES FOR GM DELCO TUBES These originally used the short version of the EIA date code: the last digit of the year, plus a week code. It has currently found a use as a driver tube in hi-fi tube amplifiers (such as Audio Research models VS55 and VS110) because of its … VINTAGE RCA 6L6GC 6L6 BLACK PLATE DATE CODE 60-17. The Need for Critical Tube Tests . , or Eindhoven, Holland tube factory (after Philips Electronics bought Mullard in the '60s). with date codes from 1972 to 1979, and are also glass-etched 5751 U. 131. I don't think any EL34s were made there. Sponsored. 33 was the Roznov factory code, and yes, those are the great Tesla EL34s. 43. The Sovtek 12AX7LP/LPS series has a large plate format that gives a … Identifying Vintage NOS Vacuum Tubes by Brand Country and EIA Code. 00 2 Excellent low noise Matsushita 7025 / 12ax7 tubes #ZQ76 $34. I didn't find the 00A or 01A today in-store unfortunately. . 00 $5. Singles, pairs and quads available. JAN … Les meilleures offres pour Paire de tubes General Electric 2 - 6CD6GA GE dates assorties testés avec photos ! sont sur eBay Comparez les prix et les spécificités des produits neufs et d 'occasion Pleins d 'articles en livraison gratuite! The black print on the glass has the Sovtek logo and says "Made in Russia" with late 1998-2001 date codes. , from the late '50s to the early '60s. I believe I understand the reading of numerical codes (i. 6MB) Appendix section 1- Fundamental electrical laws, Fundamental properties of vacuum-tubes, Definitions of common radio terms, General tube and circuit Le migliori offerte per Tubo aspirapolvere vintage testato forte Webcor ECL86/6GW8 Germania sono su eBay Confronta prezzi e caratteristiche di prodotti nuovi e usati Molti articoli con consegna gratis! New Vacuum Tubes have print on them identifying Manufacturer, Make, Origin, and code numbers like a date code. A Modern Aladdin's Lamp | Vacuum Tube Development | Western Electric | 1940. 00. I was definitely a good haul though. Sovtek 6DJ8 / ECC88 - gold pins. Matched date code March 1992. Philco models Models 14 to 47 Models 48 to 97 Models 111 to 630 Models 635 to 37-643 Models 37-650 to 38-2670 Tube characteristics of Philco ballast tubes and special “XX” types Can’t … Pair RCA 6AG7 Vacuum Tubes Matching Date Codes New Old - Etsy pair RCA 6AG7 vacuum tubes - matching date codes - new old stock - mint condition - metal tubes $21. RCA 12BH7A Vacuum Tube Nos April 1968 BY Date Code Nib Tested | Consumer Electronics, Vintage Electronics, Vintage Audio & Video | eBay! Le migliori offerte per Tubo aspirapolvere vintage testato forte Webcor ECL86/6GW8 Germania sono su eBay Confronta prezzi e caratteristiche di prodotti nuovi e usati Molti articoli con consegna gratis! Le migliori offerte per Tubo aspirapolvere vintage testato forte Webcor ECL86/6GW8 Germania sono su eBay Confronta prezzi e caratteristiche di prodotti nuovi e usati Molti articoli con consegna gratis! These fine 9-pin glass tubes manufactured for the US military by renowned Sylvania, are printed in green JAN 5751 SYLVANIA U.


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