Canon PowerShot SD700 IS
ƒ/2.8
5.8 mm
1/13
The paper scroll at the bottom is a big look-up table. You find the vacuum tube that you want to test, and the table tells you how to set all of the knobs and switches.
Endless fun for children. =)
18 responses to “Remember this?”
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I remember going to Radio Shack with my father to test and replace vacuum tubes. There was a time when you could build a radio with stuff you bought at Radio Shack. The store tester was much simpler, with few controls and a separate socket for each type of tube.
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…a lot of high end audio amplifier manufacturers are still making vacuum tube amps which could cost from $500 to as much as $10,000 a piece. according to audiophiles, these tube amps sound even better when used with digital program materials such as audio cd’s, dvd’s etc… and a rise in steady sale of the vinyl records has been noticed although most consumers have thought that vinyl is already dead… i have heard some record label are releasing re issue of their newer albums on vinyl.
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Isn’t that a control panel from control room for the recent space shuttle launch? Looks like it’s ‘back to basics’ this launch. ;}
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Radio Shack? Bah! I remember one of those at the local drug store–it was a console model, about as big as an arcade pinball machine. I can’t remember if I ever used it–it may have been gone by the time I started playing guitar (with tube amps, of course). I do remember the big rotating chart, 12AX7’s oh yeah!
I can’t possibly be that old–can I?
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Those were the days when men were men and boys were tube testers sent to the drugstore to test for gassy tubes. I did that.
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Thanks for licensing this image as CC-BY! Your choice of a free license has allowed us to use your image in Wikimedia Commons. The image is now used to illustrate the article "Multimeter" on Wikipedia. Feel free to improve the image caption if needed – I have no clue about this technology.
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I love it!
You are invited to post this and your other vacuum tube pictures in the Vacuum Tube Group.
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I love solid state.
That said…
Amateur radio tube amps are still very popular. Yet it’s been a long time since I saw a tower poking out of a suburban neighborhood. 100 watts should be enough to be heard around the world, just kidding.
Audio amps using tubes are neat as well and hot. They got to be hot or the tubes won’t work.
I am looking at two very cool Amps, both solid state, a 1KW RF amp and a 200 watt per channel audio amp, both work though I haven’t fired up the RF amp in a long time and the audio amp is always on driving speakers that won’t work right with anything less.
I miss going to Radio Shack with my mom to find replacement tubes for our black and white television so my dad wouldn’t miss Ed Sulivan.
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