6bn8 tube substitution manual pdf

Middleton for the very popular and more expensive6bn8 tube. New in box international 6bj8 radio tube valve 6bn8 ebay. The 6bj8 is listed as a good substitute 1970 tube substitution guidebook by h. Tube 6a8g or rohre 6a8g id2688, pentagridconverter heptode, octal int. In this circuit, the resistor r3 serves to keep the grid at ground potential. The information below is accurate to the best of our knowledge. Tube substitution handbook will be useful to antique radio buffs, classic car enthusiasts, ham operators, and collectors of vintage ham radio equipment. Digits are manually created by flipping plastic pads. In addition, marine operators, microwave repair technicians, tv and radio technicians will find the handbook to be an invaluable reference tool. New in original box international 6bj8 double diode triode radio tube valve.

Th e composite tube s ubstitu tion g uid eboo k co ntain s 5 100 receiving tube s ub sti tu tions. This can be done in most sockets, with no change in perform ance, except for the 6u86u8a used as the audio tone oscillator vi. All known test cards have been listed there and checked for errors which often happened when max funke released cards for the w19 or. This topic came up on the collins reflector some time ago with one fellow insisting they were no different than any other tube.

In the cases tabulated below there are more than one valve for a given vt marking. Does anyone know of a comprehensive tube substitution chart on the web. How to use this chart for tube substitution tube substitution is difficult without special books on it. How to replace many octal tube types with the new then miniature ones. The 61j86u8a and 6az8 tubes in the kwm2 are said to have short lives. Page 2 introduction two dual triodes 6sn7 vacuum tubes are used for amplification in srpp configuration. In general, i agree with his interpretaion of european letter designations for tubes, except in this regard. This 1960 tube caddy below book also includes all tube numbers from all over the world.

Due to the numbering schemes in use there are three variant classifications of vtxyz valves. The heater is designed to operate directly from the aircraft storage battery at between 22 and 28. Until the jj el844 came on the scene in 2011 there really were no substitute tubes for el84 6bq5 tubes. With the very large number of vacuum tubes or thermionic valves that were produced and as a result of the multiple vacuum tube numbering systems that were in use, there are generally equivalents for most types of tube. Free vacuum tube data sheets free vacuum tube substitution. I put a pair of jj e34ls in it and biased it according to the manual at 7778ma for the pair. Print page need 6u8 or 6u8 substitute info the am forum. A single 6bm8 may be used as an economical low power mono block amplifier or a pair of 6bm8s, in ultra.

It is similar to a 715a tube, but with larger grid radiating fins and improved ratings. This list was expanded from a list here thanks to jim cross. The philips 5r4gys is a recent find by upscale audio in upland. Open library is an open, editable library catalog, building towards a web page for every book ever published. Ive seen the ads saying the 6ju6 tube is a substitute for the 6bj6 tube used in the drake transmitter equipment. Tubes in the tube column are directly replaceable with tubes in the replacement column. This list is constantly and perpetually under construction. Display the substitution events in a soccer match using this manual, attentiongrabbing board. I love and appreciate tube based audio gear and own sixteen pieces of tube gear between my two reference systems. Great 1953 sylvania below substitution tube manual for late 1930s to early 1950s. Cb tube substitution directory 381 replacements for the most popular cb tubes by stephen dedalus, 12w5415 cb rigs have the most uncanny knack of dropping dead at just the wrong moment such as when you are just about to take a long motor trip, or horrors when you are in a small town where the only service shop within 100 miles never even heard of cb. It has a pentode plate dissipation rating of 7 watts with convection cooling.

Checked my tube substitution guide and rca receiving tube manual, and 6an8 is a medium gain triode coupled with a sharp cutoff pentode. In the early 60s sylvania published a tube manual with a back section devoted to basing diagram references. I know there are all sorts of books one can buy, but im looking for the economy route first. The ultimate tube substitution guide january 1, 1998 edition. The kwm2a uses a bunch of them, and theyve never seemed to last worth a damn. Block diagram, pinout and 6bn8 circuit application inside. If you have you probably understand my interest in a lower cost substitute replacement. Thankfully, there is a solution by implementing a simple wiring change and substituting the. Test results using the 6ju6 tube as a substitute for. Svetlana 6bm8 high performance audio dual package, triode and pentode he svetlana 6bm8 is a single glass envelope containing both a power pentode and triode. The tube manual specifications, recommendations and curves indicated a. The status today is somewhat different, new tubes have gone incorporated into transceiver. To prevent damage to equipment, it would be wise to double check with a good tube manual before actually doing a substitution.

Have you priced a matched pair of 6jb6s for your drake. Theres no denying that the 6bf5 runs hot in those receivers. If the equipment is already designed for an industrial tube, a standard receiving tube will not usually work as efficiently or as long as the original. This manual tells what radio receiving tube will substitute for another and work as a replacement. Also see 7643e80cf mcintosh mr67 tuner to buy 7643 amperex e80cf7643 amperex germany pq nos made by valvo hamburg germany original boxes 19611966 recommended pairs e80cf philips miniwatt sq pinched. This is a complete lesson on substitution that is suitable for gcse higher tier students. An old tube substitution chart i found shows subs for 12ba6. The lesson is designed for the new gcse specification. The grapevine suggests replacing the 6u86u8a with a 6ea8 for longer life. The bold listings are shown as equivalents in a tube manual, and could probably be sustituted without any changes other than rewiring but check dissipation rating for power tubes. This ne w t ube s ub stitut io n guidebook tube substitution. This base reference gives a quick way to find which tube used the same pin connections. Middleton for the very popular and more expensive 6bn8 tube.

In latin alphabet basic counterparts equivalents some european and american analogues double diodes. If no replacement is shown for a particular tube number, there is no replacement and you must use original tube number to replace a defective tube. Without a thorough knowledge of tube types and their substitution possibilities, you may be overpaying for your new or. My favorite tubes and their substitutes by robert h. Radio receiving tubes and swap tips for the new 7 pin and 9 pin miniature tube types. The 6u8a is the one tube i could do without in my life. A killer tube, but huge and requires lots of space bigger than a kt88. The pack contains a full lesson plan, along with accompanying resources, including a student worksheet and suggested support and extension activities. The old manual says to bias at between 8090ma, but the seller i bought the tubes from said they pulled 39ma each in. The physical object format paperback number of pages 240 dimensions 10. This is the sylvanias 6bn8 double diode triode tube.

The ecc82 is a dual triode, similar to a 12au7, as he says. E80cf7643 amperex pq telefunken 6bl8 substitute the e80cf is a special quality mediummu triodepentode. The ultimate tube substitution guide january 1, 1998. Tube possible substitute western substitute ec86 6s3p, 6s4p 6cm4 ec88 6s4p 6dl4 e80cc 6n1p, 6n3p ecc82 6n1p, 6n5p 12au7 ecc83 6n2p ecc803, 6l, 12ax7 ecc85 6n3p 6l12, 6aq8 ecc189 6n23p 6es8 ecc802s 6n1p ev, 6n5p ecc82, 12au7wa, 6067 ecc803s 6n2p ev ecc83, 12ax7wa, 6057 ecc960 6n3p, 6n15p e90cc.

Tube substitutions there are a lot of amps that can use different tubes to change or improve their tone for different styles of playing. A recent thread on the collins e mail reflector suggested the possible substitution of a 6aq5 in place of the 6bf5 audio output tube to reduce heat generation. In most cases the tubes manufactured to the european system have an exact equivalent tube in the american system and vice versa. The ultimate tube substitution guide by charles kittleson, january 1, 1998, vacuum tube valley edition, paperback. Gz34, 52ku, 53ku, 54ku,gz30, gz32, gz33, gz37, r52, u54, u77, 5r4gys from philips the mullard gz34 is king of the hill. The circuit of a very simple valve or tube amplifier using a triode is shown below. We are not responsible for any malfunctions of equipment due to inaccuracies in these tables.

One side is yellow digits for incoming substitute, opposite side is orange digits for outgoing player. Co mb ines i n one volu me the con tent of th e bas ic book and suppleme nt s i thro ugh iv. The filaments are supplied by a low dropout voltage regulator lm1085. The rk715b tube uses a 4pin base, jumbolike, from a notched ceramic wafer. If you have you probably understand my interest in a. The tube manual specifications, recommendations and curves indicated a significant difference between the two tubes. This substitution list should be used in one direction only that is, an industrial type to replace a standard type. Substitutes are given as a guide only please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application. Well, the amp in question rivera r55 normally takes el34s.