475 200 MHz Dual Trace Oscilloscope

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Orig CostLow BidHigh Bidaverage
$2500 (1973-new)
$3000 (1977)
$3960 (1982)
...
$300.00 1/12/03 #3105555653 geotronics (tested-looks good) (22 bids $50 start)
$255.00 3/22/03 #2516300505 deedae (w/3 probes,manual,cover-tested) (15 bids $10 start)
$140.27 (+$25 ship) 7/10/07 #280131004546 washington-state-surplus (10 bids $9.99 start) (untested-some trace)
$67.52 (+$45 ship) 7/14/07 #290137052931 naturesmooth (17 bids $19 start) (tests ok)

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    Features:

  • DC TO 200 MHz BANDWIDTH -- Conservatively rated, in the Tek tradition.
  • DUAL TRACE - Chopped or alternately displayed.
  • 5mV/DIV - 50V/DIV VERTICAL - Enough sensitivity to test microphones, and enough range for vacuum tube circuitry too. Also with Tek's good overload protection, it can handle sunstantial overvoltage without frying the inputs.
  • 0.01USEC/DIV TO .5s/DIV HORIZONTAL - Speedy enough so you can watch short glitches.
  • TIMES 10 SWEEP MAGNIFIER -- Even more expansion for watching extra closely.
  • Dual sweeps, DELAYED or EXPANDED SWEEPS- Nice ten-turn knob so you can slide along the waveform at your leisure.
  • TRIGGER VIEW-- Pull a knob and watch what the trigger circuit is seeing-- great for optimizing triggering levels and bandwidths.
  • A cornucopia of triggering and sweep options!
  • 8.10 cm CRT-- Big enough so those of us with old eyeballs can read it from across the room.

    Special note to young folks: If you're only using a digital scope, you're missing out. There's a whole underworld of little bits of noise, hum, and glitches that your digital scope is just glossing over. Get a real good analog scope for those times when your digital scope isnt giving you the amount of detail you need.