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  1. New use for 6X4 ??
  2. "Beam Me Up, Scotty" (Beamus) AM Transmitter -- first prototype
  3. Ampex 300 4 track
  4. Tube tuners on s/s pre-amps
  5. Re: Best place to sell tube amps
  6. Re: JBL 4344 MKII for sale
  7. Help Identifying 12ax7a
  8. Basic magnetic phenomena explained
  9. Disc ceramic vintage caps
  10. Boosted Triode
  11. Harman Kardon FM100 - early version?
  12. System Advice
  13. Turneraudio website just re-posted
  14. Tuning indicator without magic eye or meter
  15. Re: golden tube bias
  16. What is this matched quad of new RCA 6L6GC tubes worth?
  17. Harman Kardon Citation 1 Kit Value
  18. horizontal tubes
  19. Rarest Challenger Ever?
  20. Bridge or Center Tap?
  21. Tales of a Heathkit W7-M amplifier
  22. Is this test result OK?
  23. Which way would You try to sell a 300B SE?
  24. What is a 6L6 Radiotron?
  25. EL34 suppressor grid (g3) characteristics
  26. Sencore LC53 VS Sprague TelOhmike 6A
  27. Mystery transformer
  28. SET amplifier Q
  29. Triode or pentode with local NFB?
  30. ANN: HpW-Works V3.2 Spectrum Analyzer & Wave Generator
  31. Local CFB with grounded ultralinear OPT tap, Partial Circlotron.
  32. Local Cathode FB, UL Tap at Ground Part 2
  33. Luxman SQ38D
  34. Class-B amplifier, control grids grounded, input to the screens.
  35. Electron Tubes Philips type #QB3-300
  36. Interesting stuff re tube testing
  37. Re: Direct-Coupled SE Amplifier using the EL509/6KG6
  38. Re: Direct-Coupled SE Amplifier using the EL509/6KG6
  39. Re: Direct-Coupled SE Amplifier using the EL509/6KG6
  40. Simple NFB Simulations for a FB Pair
  41. JADIS amp reformation
  42. Re: Restored Antique Radios FS
  43. Hum Reduction for DHT Power Stage
  44. Professional Radio Engineer
  45. WTS : New Pioneer DDJ-SX Digital DJ controller for serato software..$500
  46. Re: All the best in 2012A.
  47. Apparently This Matters: Ruzzle
  48. What is it?
  49. Simple Regulated PS Using 6N7 Pass Tubes
  50. Hybrid Reg PS
  51. 1600 volt 250 ma Constant Current PS
  52. Brute Force 2.5 KV, 0.5 Amp CC PD Drives a Laser
  53. 500-2500 volt, 200-250 ma CV PS
  54. How many tubes do I need?
  55. Re: All the best in 2012A.
  56. favourable triode section
  57. I'm looking for a Boob Tube
  58. 6SN7GT PREAMP TUBES
  59. QUAD I amplifiers
  60. Re: valveradio.net
  61. Re: FS: NOS KenRad 6SN7 -GT (Smoke Glass Pairs/Quads) VT-231s
  62. Replying to a Private Message
  63. Boosted cathode follower, super cathode follower etc
  64. Hybrid amps with tubes driving mosfets
  65. HT Stabilizer
  66. Long Tail Phase Splitter
  67. Walnut Hammond Chassis
  68. Darlington and Sziklai pair
  69. Cascode Amp responds to Large Signal Burst
  70. Amplifier Burst Testing
  71. Simple Low Power Constant Current Test Set
  72. THD testing of amplifiers.
  73. Series Shunt regulator
  74. Hybrid amp, EL34 drive to compound complementary mosfet output
  75. Tone Burst Testing
  76. Speaker Matching transformers.
  77. Re: FS: RARE Tubes Genalex Telefunken and more!
  78. Re: Tannoy NOS drivers in bamboo plywood boxes
  79. Re: Tannoy NOS drivers in bamboo plywood boxes
  80. Re: Tannoy NOS drivers in bamboo plywood boxes
  81. Re: Tannoy NOS drivers in bamboo plywood boxes
  82. Re: Tannoy NOS drivers in bamboo plywood boxes
  83. Questions for Pat Turner
  84. RCA 30W amps from about 1960
  85. Quad 405 with current dumping
  86. Differential input stage in PP tube amps
  87. Amar Bose dead at 83
  88. Re: Never mind the CAGERS, watch out for the HUNGRY WOLF!
  89. 12AU7 noob question(s)
  90. You won't believe this if I tell you...
  91. Wien Bridge Oscilator, 1Hz to 1MHz.
  92. phase shift audio oscillator 5Hz to 100kHz++
  93. Compton reverse log pot, tubed Wien Bridge oscillator
  94. Tuning gang C value for Wien bridge oscillator
  95. Wide Range Wein Bridge Oscillator
  96. Wobulator
  97. All Triode PP UL
  98. All Triode PP UL Amp Secret Revealed
  99. Re: Toob Amplified PC Speakers
  100. The tube power amplifier vs. solid state
  101. A euphonious New Year to y'all — Andre Jute
  102. Test for access
  103. What ever happened to Steve Bench?
  104. Low Cost SET Amp for Newbies
  105. Re: Acoustech manuals,anyone?
  106. Monster Power Amp by Stephie Bench and Myself
  107. Restoring a Sherwood S-5000
  108. Restoring a TV-7/U Tube Tester
  109. EF86 preamp
  110. Help find power transformer for project
  111. Re: Long tail differential pair?? Who has circuit like that?
  112. Guitar amp tone control calculators
  113. Sequel to Low Cost SET Amp for Newbies
  114. Power Frequency Ripple Reduction in B+ Supplies
  115. LTSpice, guitar amp tone control
  116. Power Supply Ripple Sidebands
  117. Guitar Amp RF oscillation, tube warmer recipe
  118. VTL 40/40
  119. Sanctions against Russian Tube makers
  120. 100W monobloc amp details
  121. Re: Marantz 7--Why so expensive??
  122. Quad II question: High B+ a problem?
  123. Re: AA11 Heath preamp users???
  124. Sanctions against Russia over Ukraine.
  125. Dynaco MkIV monobloc re-engineering
  126. McIntosh using 8005 triodes as output
  127. The Twin Coupled Amp, Crowhursts Unity Coupled Circuit
  128. One for Pat .....
  129. Quad-II amp info and re-building
  130. Re: WANTED: Jensen G610
  131. Re-edited page on Quad-II mods.
  132. What would make a Quad II oscillate?
  133. Re: NOS 6LW6s
  134. Quad-II mods - again, oh no....
  135. Baxandall tone control, still good?
  136. Some Projects
  137. Re: Triodelington
  138. Empire Turntables
  139. Life in the Last Lane
  140. stuff looking for a good home
  141. Second DIY (sort of) Amp
  142. Grounded Grid?? Really?
  143. Scott 299b OPT needed
  144. 3rd Annual Spring Cautionary Post & Some Edits
  145. WTB:Sherwood or DRACO Micro-CPU tuner from the 70's
  146. looking for marantz 8b tube cage
  147. Re: e80cc = 12au7?
  148. WTB Seimens Schatulle 42 and Telefunken Opus 7 Blonde
  149. Tube Tester Calibration Needed
  150. Seeking data on old designs
  151. tube amp kits on ebay
  152. Re: 'getting the most out of vacuum tubes' by Tomer
  153. Re: Euratele koln tube tester
  154. an interesting archive of R.A.T.
  155. Chinese Rectifiers
  156. Simple PP Amp with +ve & -ve FB
  157. Re: Is There Anybody In There?
  158. Copper Band in a Cross-Over Choke??
  159. Need Scott 299B Output Transformers
  160. Re: Is There Anybody In There?
  161. 1/2 12BH7??
  162. Pentode Screen Resistance (rs) Estimation Example
  163. New web pages, 2016, about AM radio
  164. Borbely Millennium 200
  165. Andrew Jute KISS 194
  166. Re: Is EnnyWunne around? or Haz Evvree Wunne died?
  167. Re: uTracer - tube curve tracer [kit]
  168. Re: uTracer - tube curve tracer [kit]
  169. Re: old tube phonograph questions
  170. otl amplifier 65W
  171. What is the most powerful audio output tube?
  172. Grundig TK 46
  173. My Mechanic says I need a Tube in my Tire
  174. BIAS regulation Electro Harmonix KT90 vs Jinvina KT90
  175. Which Mesa guitar amp has 12 power output tubes
  176. Re: Best tubes for Jolida SJ-502
  177. Re: Best tubes for Jolida SJ-502
  178. Annual Spring Cautionary Post - 2017
  179. Replace plate load resistor with plate choke
  180. What type of capacitor should I use?
  181. Scott LK150
  182. GZ34
  183. Re: Precision 900B tube tester,unique?
  184. Re: FS: Lazarus Pre-amp, Quicksilver GLA amp,& McCormack Micro Phono
  185. long lines of interesting and educational posts to usenet ;-)
  186. Mouser Electronics
  187. B Field collapse
  188. Re: Marantz 7--Why so expensive??
  189. Re: 2E22 - "300B Pentode"
  190. Re: FS; Western Electric tube amplifier
  191. Re: World Audio single ended 4W questions
  192. Re: World Audio single ended 4W questions
  193. Hendrix preferred 6550's over EL34's!
  194. Re: AR3 Speakers - Lessons Learned!
  195. Re: Electrohome tube amp - what does it value?
  196. Re: Kerr-McCosh
  197. Re: Restoring a Variac
  198. Re: ECC40/CV3884 as audio tube - opinions?
  199. Re: Need these tubes to fill out my drug store tube tester UPDATED LIST
  200. Apropos Actual Use of Tube Equipment
  201. What is the 6 volt equivalant to a 35L6 or 50L6?
  202. Anyone know where to find a Crosley Model 23 Dial Cord diagram
  203. How do you test a Selenium Rectifier?
  204. Looking for links and order info for PARTS
  205. Fisher 200A Monoblocks
  206. Tube mono-block amp with SIX 6L6 outut tubes
  207. The most important tubes ever made.....
  208. Does anyone have any Eico tube stereos or manuals?
  209. What company made the best vintage Test Equipment?
  210. Wanted: Heathkit AA-32 assembly manual
  211. Re: Tubes For Sale: NOS and Tested Used
  212. Re: FS: Audio Tubes
  213. Re: New Arrivals
  214. OT - But Relevant: Bug Zappers
  215. What 60 HZ Feels Like - Even Some On-Topic Stuff
  216. Best new EL84 tubes?
  217. Capacitor connected cathodes in PP output
  218. Re: 'getting the most out of vacuum tubes' by Tomer
  219. 171a
  220. Radio Repair Clinic
  221. Re: Tip-Cutting Pliers
  222. Dynaco ST-35, A First
  223. Fisher 30-A amp
  224. Distortion please...Amp Distortion
  225. Triode Naming Convention
  226. Re: Multi-Section Capacitors - "Empties"
  227. tube-making, the equipment, and the process
  228. Re: Lies, Damn Lies, and Global Warming
  229. The Snowman
  230. Article from 2012 - "nano" vacuum tube
  231. Panel-Mounted Non-Polarized Convenience Receptacles
  232. rarity of LF and HF adjustable coils, coil forms, etc.
  233. Re: AR3a vs. JBL-100