Site map

• Onno's E-page home page.
• Valve veneration, radios, scopes and other equipment using thermionic valves.

  Radios:

  • Philips 836A radio (1934/1935)
  • Philips 456A radio (1936)
  • Philips 667A radio (1937)
  • Another Philips 667A
  • Third Philips 667A I fixed, not mine.
    
  • An Isis model 127A radio (1937)
  • Mende 315W radio (1938)
  • Philips 470U "Zonnetje" radio
  • Waldorp 120 battery radio
  • Philips 915X radio
  • Wartime Civilian Receiver (1944)
  • Philips 170A/15 radio
  • Philips BX560A radio
  • Philips BX373A "Compass" radio
  • Erres KY485 radio.
  • Philips BX480A radio.
  • EAW AT Super 660 WK3 DDR radio
  • Tesla Talisman 308U radio.
  • Nordmende Fidelio 53 radio.
  • His Master's Voice 1101 radio.
  • His Master's Voice 1122 radio.
  • Bush DAC10 AC/DC radio.
  • Erres KY515 radio.
  • Philips BX732A radio.
  • Philips HX347A radio/gramophone.
    • HX347A close-up photographs
  • Erres KY552 portable valve portable
  • RCA Victor 4-Y-511 radiogram
  • Philips B1X67U kitchen radio
  • Philips B7X63A luxurious Bi-Ampli radio with SEPP amplifiers.
  • Philips B4X82A-01 radio
  • Philips A5X83A AM/FM tuner (1960)
  • Eddystone 840A communications receiver.
  • Eddystone 870A radio
    • Eddystone 870A schematic
  • Sharp UW-122 small table radio.
  • Philips B5X14A Plano radio
  • Philips B7X14A luxury Plano
  • Philips B1X42A AM/FM radio
  • Bush VHF81 AM/FM AC/DC radio.
  • Philips B8X44A stereo Plano
  • MBLE BBO840 FM tuner from a kit
  • RFT Stern Jalta 5360D DDR radio.
  • Blaupunkt Stockholm FM stereo radio.
  • UM58 homebrew regen receiver

  Amplifiers with thermionic valves:

  • Bedrock 600 guitar combo repair.
  • A Geloso G215AN amplifier, from around 1960.

  Scopes and similar using valves (other scopes under instruments):

  • Philips GM5603 scope
  • Philips GM5606 scope
  • Philips GM5653 scope
  • Philips GM5659 scope
  • Philips GM5659-01 scope
  • Tektronix 545B scope
  • Hameg HM107 scope
  • Heathkit IO-20 ignition analyser

  Other measuring equipment using valves:

  • Taylor model 67A RF generator
  • Philips GM2882 RF generator from around 1945, not working.
  • Slightly more recent Philips GM2882 RF generator, working (traded).
  • Philips GM6004/02 diode voltmeter
  • Philips GM7635/01 valve multimeter
  • Philips GM2317 LF generator
  • Philips GM2883 RF generator
  • Philips GM2886 RF sweep generator
  • Two Heathkit V-7A Valve Voltmeters (traded).
  • IM-11D Valve Voltmeter and a wreck (traded).
  • Paco V-70 Valve Voltmeter (traded).
  • Philips GM6012 AC valve voltmeter
  • Philips PM5100 LF generator
  • Heathkit IG-102 RF generator (traded).
  • A NordMende UW342 wobbler from the early sixties

  Some tube testers:

  • A B&K 700 tube tester
  • A Hickok I-177 tube tester
• Neon nostalgia neon and nixies
  • Guide on how to drive nixies with schematics:
    • Bally 7-digit pinball machine display
    • Display bank with memory
    • SCR-based nixie-driver
    • SCR-based neon lamp driver
    • Anode-scanning display
    • SCR-based ring counter
    • Discrete decoder/driver
  calculators:
  • Casio 122 desktop calculator
  • Monroe 640 Desktop Calculator
  • 7-segm. neon display calculator
  • Berkel 176SG scale with Panaplex displays
  measuring equipment:
  • Advance DVM1 digital voltmeter
  • Philips PM2433 digital voltmeter
  • Systron Donner 9000 Volt-Ohmmeter
  • Monsanto 101B frequency counter
  • Philips PM2420 digital multimeter
  • Takeda Riken 3788B frequency counter
  • Digavi digital nixie DC multimeter
  • Racal 9520 frequency period meter Made in Britain, 1970
  • Philips PM6630 frequency counter
  • Philips PM6630B frequency counter
  • Philips PM2421 digital multimeter
  • Heathkit IM1202 digital multimeter
  • Scneider DigiTest 500 digital voltmeter
  • Gay-Milano tracking voltmeter
  • Nordmende DiVo 3362 Digital voltmeter with Panaplex display
  • Feedback FM610 frequency meter with Panaplex display
  • Philips PM2423 digital multimeter
  • Philips PM2424 4 digit autoranging digital multimeter
  • Philips PM2443 autoranging digital voltmeter
  • Homebuilt universal frequency counter by a German radio ham.
  • SEV frequency counter, German homebuilt.
  • EVM100 nixie panel meter.
    • EVM100 schematic
  • Philips PM2494/01 3.5-digit digital panel meter
  • Newport Laboratories Model 200A-3 3.5-digit digital panel meter.
  Clocks and timers:
  • Digistop 710 Digital stopwatch
  • Karlsson Nixie Clock
  • Bemelman Nixie Clock
• Intricate Instruments
  • Multimeters page
  • Delta D015-1.5 laboratory power supply.
  • Philips PM5126 sine/square-wave oscillator.
  Oscilloscopes:
  • Tektronix 568 sampling scope.
  • Heathkit IO4560 scope,
  • Hameg HM207 scope,
  • Elektorscope after the Elektuur design,
  • Tektronix 2235 scope,
• Projects Page
  • Guitar amplifier combo (work in progress).
    
    • Guitar amp -power amp stage
    • Guitar amp pre-amplifier stage.
    • Guitar amplifier cabinet - how I built
    • Guitar amplifier combo. first try of power amp .
  • RS-232 level converter. after Maxim application note.
  • FM stereo test signal generator from SUP1 kit by ELV.
  • ZM1040 Nixie clock after www.nixieclocks.de
  • Simple RJ-45 cable tester
  • UM58 homebrew regen receiver
    
    • UN58 schematic
    • UN58 construction drawing
  • Nixie Clock after Frank Bemelman's design
  • FC7008 frequency counter from ELV kit
  • Adjustable power supply using μA723
  • M13 High voltage supply
    • M13 schematic
• Odds and ends:
  • Converting a Compaq laptop power adapter to a LED lighting power supply.
  • Krups Nespresso Repair.
  • Applying a new speaker cloth page
  • Yellow Bathtub Submarine repair attempt.
  • Guitar combo flashover explanation and repair.