Audto bastcs iuly, 1990 page 3 new 6gh8a driver tubes. I try to concentrate on popular andor readily available tube types. Industrial tubes are more rugged than receiving tubes in that their peak ratings and powerhandling characteristics are much higher. Some of the pages are in other languages, particularly german. Excellent resource tube substitution list article from 1945. Partial manuals normally include everything apart from construction details. The 6u8a differs from the 6u8 mainly in the fact that the heating time is tightly controlled. If you have you probably understand my interest in a lower cost substitute replacement. That being said, with more and more tube types being out of production i think people will have to find ways of substituting tubes in there favorite amp or. Free vacuum tube data sheets free vacuum tube substitution guide manuals free radio tube data manuals free tube base diagrams. This base reference gives a quick way to find which tube used the same pin connections. Tube possible substitute western substitute ec86 6s3p, 6s4p 6cm4 ec88 6s4p 6dl4 e80cc 6n1p, 6n3p ecc82 6n1p, 6n5p 12au7 ecc83 6n2p ecc803, 6l. All tubes new, military equipment and have otk mark. I am working on posting the rca hb3 tube handbook on line on this.
The valve would be used as a mixer with the triode as local oscillator. Tube data lots of tube data via pdf copies from tube manuals courtesy of frank. Field modification to incorporate this change is im. This is a list of european mullardphilips vacuum tubes and their american equivalents. At the bottom of this page youll find some links to other tube datasheet sites in case you cant find what youre looking for here. Since all worldwide 7199 tube production has ceased and is not expected to. Most of the datasheets are in pdf format and some are links to other html pages. Section 2 lists those receiving tubes that can be substituted by industrial tubes.
The 6u8 a is the one tube i could do without in my life. Highvoltage considerations for television picture tubes, picture. Tube 6u8 or rohre 6u8 id3778, triodepentode, noval, b9a and shown. Easily select individual manual pages and print out. How to replace many octal tube types with the new then miniature ones. Checked my tube substitution guide and rca receiving tube manual, and 6an8 is a medium gain triode coupled with a sharp cutoff pentode. Similarly, an air space of 1 inch, or equivalent, should be provided.
During manufacturing production runs of particular scott types the factory often substituted the presently more expensive and hardertofind, 7199 for the older and more common 6u8 6gh8 6bl8. How to use this chart for tube substitution tube substitution is difficult without special books on it. You should find the tone of the nos 6u8 equal to if not better that the 7199. Siemens ecf802 for mcintosh 6u8 6gh8 6ea8 mr67 mx110. Many of the files here are just schematic diagrams but some include additional information such as specifications, and a few are complete manuals. The ecc82 is a dual triode, similar to a 12au7, as he says. Cub cadet hydrostatic lawn tractor operators manual series. Free vacuum tube data sheets free vacuum tube substitution.
You can still find nos 7199 tubes on ebay and online stores. I think you might make the substitution of ecf82 6u8 for 6an8, but, like steerpike says, you would have to rewire the tube base. Control tube v8 was changed from a 6cb6 to a 6u8 and reference tube v9 was changed from an ob2 to a type 5651. Sometimes the solder joints are painted with red paint at the final inspection. In general, i agree with his interpretaion of european letter designations for tubes, except in this regard. I dont know, i can only tell you what people say in the archives of the tube asylum, which you can search yourself as well. This topic came up on the collins reflector some time ago with one fellow insisting they were no different than any other tube. Id go with it since the amp works best with it and with a substitute it can take allot of tweaking to get it working the same. Lcf806ln8, pcf809a8, ucf80 and xcf804bl8 except for heater ratings. The part behind a slash is the rmaretmaeia equivalent. Tube datasheets here youll find a modest collection of datasheets for some popular tubes. If you prefer the acrobat reader, the entire r10 is here in pdf format, courtesy of gary kaufman nb about 8m.
S department of the army, technical manual tm 116625. The tube is microphonic though, but a tube shield took care of that. The guy in the link below says you can do a direct sub with a 6u8 for a 6gh8 so if you have the adapter according to him you can. Hi guys, could i please ask the tube cognoscenti whether the 6gh8a is a good substitute for the 6u8a in the collins gear, particularly the s line equipment. Tube 6u8a or rohre 6u8a id3986, triodepentode, noval, b9a and universal shown. Stick with the 6u8 6u8a in this socket and look for shortlife tube problems elsewhere. The 6u8a is a triode pentode by designation but is constructed as a beam tetrode. Another spot to look, which is especially useful if youre looking for replacement types and tubes with similar bases or characteristics, is the nj7p tube database.
Heathkit schematic and manual archive vintage radio info. Theres no denying that the 6bf5 runs hot in those receivers. Orr w6sai it should be noted that 6u8 s are notorious for causing a multitude of problems due to grid to cathode shorts that sometimes does not show up on a tester. Nj7ps tube database type in a tube number and get info. Radio receiving tubes and swap tips for the new 7 pin and 9 pin miniature tube types. I know there are all sorts of books one can buy, but im looking for the economy route first. Ive seen the ads saying the 6ju6 tube is a substitute for the 6bj6 tube used in the drake transmitter equipment. I was wondering if there is another tube that can be substituted for the 6eu7 that is less expensive with out having to do any mods to the amp. 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. The design purpose was in vhf radio and television between 80 mhz to 220 mhz. Thankfully, there is a solution by implementing a simple wiring change and substituting the. This is a list of vacuum tubes or thermionic valves, and lowpressure gasfilled tubes. A few specialquality tubes did not have a standard equivalent, e.
Therefore, it may be desirable from time to time to substitute an industrial tube to get more satis factory results. This manual contains only direct substitutions which. The entire manual in tar format is here as individual gif files. There you go phil, this seems to be a more mordern location man, youre showing your age bud i was just 5 when that publication came out. 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.
It has a pentode plate dissipation rating of 7 watts with convection cooling. While other substitutes may appear suitable, they have not. New 6gh8a driver tubes for the super seventy amplifier we have bad news and good news this month. The visible structure on the marked 6es8 was identical to the suspect 6dj8. The suitability of the 6dj8 for audio tube audio store. I have quite a few nos 6u8 tubes as well as 6gh8 and 6bl8, which have the same pinout but slightly. Hhscott reference for fans of vintage vacuum tube scott consumer hiif components from 1946 to 1966. Vacuum tube and valve cross reference sub substitute substitution equivalent and replacement list. In addition to the data i have scanned and posted, if youre looking for data on a particular tube you should visit tsdl on duncanamps website, or franks tube data.
We are not responsible for any malfunctions of equipment due to inaccuracies in these tables. The entire manual in zip format is here as individual gif files. Jul 03, 2011 i dont know, i can only tell you what people say in the archives of the tube asylum, which you can search yourself as well. Th e composite tube s ubstitu tion g uid eboo k co ntain s 5 100 receiving tube s ub sti tu tions. Shes short on cash and they seem to be a bit on the pricey side. As my daughter megan would say to me you a crazy old man. Foreign tubes and possible substitutes not always pin compatible, and may need different heater. 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. Great 1953 sylvania below substitution tube manual for late 1930s to early 1950s. The ultimate tube substitution guide january 1, 1998 edition. A friend of mine would like to re tube her gibson falcon.
Scott stereomaster products include tuners, amplifers, speakers. You dont get data on late tubes like the 6au6, 6u8, or television sweep tubes. Tubes in the tube column are directly replaceable with tubes in the replacement column. The tube manual specifications, recommendations and curves indicated a significant difference between the two tubes. 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. That could be useful if you find an old tube and wonder if it could become a receiver. Have you priced a matched pair of 6jb6s for your drake. Therefore, it may be desirable from time to time to substitute an industrial tube to get more satis. After further research i learned that is a similar tube with a grid wound in a special way to create the variablmu characteristic. In the early 60s sylvania published a tube manual with a back section devoted to basing diagram references. Until the jj el844 came on the scene in 2011 there really were no substitute tubes for el84 6bq5 tubes.
Please sit back, relax, and read about these extreemly rare ecf802 series made for critical sonic military to scientific medical applications in germany in the late 1960s. Click here for free downloads of vacuum tube reference data and substitution manuals. Raytheon radio tube data and substitution chart by raytheon. Bill orr kwm2 article collins collectors association. The information below is accurate to the best of our knowledge. Download the entire rca hb3 tube manual series detailed tube specs. The kwm2a uses a bunch of them, and theyve never seemed to last worth a damn. In ecf82 mullard put both designations on the envelope indicating equivalence. This list is biased by the tubes that i have encountered during the repair of the many tube amps that have come to my repair shop. Excellent info source for us, european, and other tubes. Unless otherwise indicated, all tubes are unused newoldstock. To prevent damage to equipment, it would be wise to double check with a good tube manual before actually doing a substitution. Some 6ea8s will not work in this circuit, and others will distort the audio tone signal, which then bleeds into the receiver audio system dur ing cw operation. Just for kicks, i installed a nos ge 6v6gta, but to my surprise, the amp sounded much better with the jj tube.
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. This list is constantly and perpetually under construction. Hhscott vacuum tubes phase splitter inverter overview. If solder joints are all painted, you will know that unit is unmolested. The ultimate tube substitution guide by charles kittleson, january 1, 1998, vacuum tube valley edition, paperback. I pulled the used 6u8 and put in a nos ge 66786u8a tube. Test results using the 6ju6 tube as a substitute for. For vehicles first sold in canada, substitute the name general motors of canada limited for buick motor division wherever it appears in this manual.
Tube 6bn8 or rohre 6bn8 id3779, double diodetriode, noval, b9a and shown. Keep this manual in the vehicle, so it will be there if it is needed. Please refer to the purchase documentation relating to your specific vehicle to confirm each of the features found on your vehicle. The tube is manufactured by the orzep, orel, russia. Print page need 6u8 or 6u8 substitute info the am forum. Rca r10 receiving tubes manual martinos center for. 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. In the manual i found that the 6es8 had many of the same characteristics as the 6dj8, and immediately went to my tube museum to find one. Tube substitutions there are a lot of amps that can use different tubes to change or improve their tone for different styles of playing.
The bad news is that the 7l99 vacuum tube is discontinued and is no longer available except as residual old stock at a very high price. Tons of gain on tap, very dirty and nasty when cranked all the way up. This ne w t ube s ub stitut io n guidebook tube substitution. The circuit differences can be determined by referring to the schematic diagrams included in these service notes. Picture tube replacement the use of a substitute part which does not have the same safety characteristics as the philips recommended replacement part shown in this service manual may create shock, fire, or other hazards. The two tube types are not pinout interchangeable, as their triode sections are pinned differently. R10 thanks to steve fellini, doug forbes, and joseph lowe.
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