DayRad In addition to being a general purpose oscilloscope this unit contains a wobbulator, a motor driven sweep generator, to do sweep alignment of equipment. Bendix Model The center frequency can be shifted up or down by connecting a signal generator to the bottom terminal posts and tuning it to the desired center frequency. Close up of the CRT mount showing the sweep graticle.
For the operators manual click here. I did find a mention of this tube used in a high speed display unit used by NASA for radio astronomy. Close up of the 5 electron guns The dual set of pins on base.
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Size comparison, the tube in front is a 3AP1. Weston Model Also known as OQ-3 in the Military version. To test tubes, individual jumpers are connected between the tube socket panel and the tester panel Weston Model OD This is the military version of the Weston Connect the tube elements to the tester is by short jumpers between the panels and then setting the voltage requirements for each element.
One of the counter top testers of the early 30's. The large 9" diameter meter allowed the customer to see how bad his radio tubes were and he needed to purchase Silvertone tubes for his radio. This early 30's counter top tester sports an 8" diameter meter for test results. The other meters are used to adjust line voltage and set operating point for the tube under test.
You first plug the tube into one of the sockets on the left side of the tester to check for shorts, if there is a short the white circle to the left of the meter lights up with the word "SHORT". If the tube has no shorts then you plug the tube into one of the sockets on the right side to check for quality.
Apparently it is capable of testing Kellog type tubes with the filaments brought out on a top cap. Triplett Model No other markings are on this small tester, the tube chart located on the "step" is so small you need a magnifying glass to read the tube settings. Test setup is done with jumpers. Radio City Products Model The meter is in upside down, that's the way I got it.
May have been turned so customers could see the tube results while the serviceman did the test. Sterling Model R A battery operated tester for early battery tubes like the or Sterling Model R 4. An early tester used to rejuvenate the filaments on tired tubes and test filament emission. Rejuvenating the filament was used only on thoriated filament tubes.
This one is housed in a portable case with lid. Also has the capability to test capacitors. Supreme Model 89 Deluxe. This one housed in a slant front bench case. Stark Model Basic emission tester.
Test and measurement for broadcast and media applications
Nothing really special about this unit, I just liked the color combination with the bright red sockets, knobs and meter. Another basic emission tester, small portable unit, circa late 's. It is just a simple emission test with results shown on the neon bulb. The cables are stored in the pull down door. Transvision Component Tester. I know virtually nothing about it. Apparently in addition to testing CRT's it will also test flyback transformers, and selenium rectifiers and rejuvenate cathode of the CRT.
Oak Ridge Products. CRT tester. Another test unit I know nothing about. It also included a v and 15KV voltmeter. This is an unusual tube tester, circa from IBM, yep the computer people. The test setup consists of connecting the tube pins to the tester by the use of short jumpers, and then setting up each elements' parameters.
It also contains a full VOM. A multipurpose tool for the service technician has the following functions: An audio amplifier with phone jack output An AC voltmeter with range of 0. Early Television sweep generator. Hickok OS RF generator and AC meter. Jackson A.
Capacitor tester. It has a test range of 10pf to uf, up to volts. What makes this "digital" voltmeter unusual is that the display is mechanical. I haven't been able to find any information with a cursory search through the internet. I would say it dates from the late 60's to early 70's, it contains about 7 transistors click here for interior view it is very noisy when measuring.
Click here to see it in operation. Hickok Test Bench.
A multi-purpose device. On this page I will be displaying various types of vintage test equipment I have acquired over the years, some pieces will be common but interesting others not so common. Click on any picture to see a high definition picture of the piece.
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Hope you enjoy the tour. Homemade Uses a 1" CRT, probably dates from the 30's. Inside view of the 2" homemade oscilloscope, wiring is very shoddy. Under the chassis connections are hanging in mid air. This set uses 6J7 for horizontal and vertical amplifiers, 6X5 for HV rectifier, 5Y3 for LV rectifier, and as horizontal sweep generator. Supreme Model A A later version of the Model line of scopes, electrically it is identical to the earlier versions. Weston Model One of the counter top testers of the early 30's. Jewell This early 30's counter top tester sports an 8" diameter meter for test results.
Jackson No other markings are on this small tester, the tube chart located on the "step" is so small you need a magnifying glass to read the tube settings. Sterling Model R A battery operated tester for early battery tubes like the or Sterling Model R 4 An early tester used to rejuvenate the filaments on tired tubes and test filament emission. Supreme Model 89 Deluxe This one is housed in a portable case with lid.
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Supreme Model 89 Deluxe This one housed in a slant front bench case. Stark Model Basic emission tester. Triplett Model Another basic emission tester, small portable unit, circa late 's.
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