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The -hp- Audio Signal Generators
https://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1952-08.pdf
The 30-milliwatt generator is the -hp- Model 206A. This instrument is specifically designed to be used in the most exacting Fig. 1. -hp- Model 206 A Audio Signal Generator operates from 20 cps to 20 kc with less than 0.1% distortion above 50 cps. audio applications and is unquestionably the finest audio test source available commerci ally.
Hewlett-Packard HP-200AB audio generator - Ohio University
https://people.ohio.edu/postr/bapix/HP200AB.htm
The Hewlett-Packard HP-200AB audio generator will generate sine waves from 20 Hz to 40 KHz. Like the other HP audio generators, the circuit uses the famous light-bulb-stabilized Wien bridge oscillator patented by William Hewlett in the late 1930's. This HP-200AB is an early one with serial #632. Price in the1953 catalog was $120. Repairs
Hewlett-Packard HP-200CD audio generator - Ohio University
https://people.ohio.edu/postr/bapix/HP200CD.htm
The Hewlett-Packard HP-200CD audio generator will generate sine waves from 5 Hz to a bit over 600 KHz. That puts its upper ranges right into the broadcast band. It uses a balanced version of the famous light-bulb-stabilized wien bridge oscillator developed by -- you guessed it -- William Hewlett who commercialized it with David Packard.
HP 200CD Audio Generator (1955) - antique radio
https://antiqueradio.org/HP200CDAudioGenerator.htm
HP 200CD Audio Generator (1955) the Hewlett-Packard 200CD is a "wide range oscillator" that generates a sine wave in the subsonic, audio, and ultrasonic frequencies (5 Hz to 600 KHz). I bought my HP 200CD for one task: aligning the second IF (intermediate frequency) section of my Hallicrafters SX-88 communications receiver.
Audio Signal Generator 205AG Equipment Hewlett …
https://www.radiomuseum.org/r/hp_audio_signal_generator_20.html
Model: Audio Signal Generator 205AG - Hewlett-Packard, HP; Palo Alto Shape Rack Dimensions (WHD) 19 x 10.5 x 12.75 inch / 483 x 267 x 324 mm Notes The Model 205 AG Audio Signal Generator contains all the necessary instruments for accurate gain or …
HP 205AG - Audio Signal Generator
http://www.ase-museoedelpro.org/Museo_Edelpro/Catalogo/Overview/Instrumentation/HP_205AG/HP%20205AG.pdf
HP 205AG - Audio Signal Generator . This audio generator is among the early laboratory instrumentation that made HP famous. Its introduction can be dated around 1940 or 1941. It was already advertised in January 1942. Here . two ads from …
Audio Signal Generator for sale - eBay
https://www.ebay.com/b/Audio-Signal-Generator/181992/bn_7023274721
HP Virtual Museum: Model 200A audio oscillator, 1939 …
https://www.hp.com/hpinfo/abouthp/histnfacts/museum/earlyinstruments/0002/0002history.html
They built the first Hewlett-Packard oscillators in Dave's rented garage on Addison Avenue in Palo Alto, California. Their initial product was the 200A audio oscillator; It sold for $54.40. Similar equipment built by competitors cost between $200 and $600, a whopping price difference that generated a buzz very quickly.
Test Equipment: Audio Signal Generators - Surplus & Sales
https://www.surplussales.com/Equipment/TestEquipment/TestEquip-1.html
Hewlett Packard 200C audio oscillator. 20 Hz to 200 KHz output. 100 mW, 10v in to 1k ohm load. One of the original HP RC audio oscillators that made HP famous. A rare find. No cabinet, rack model. 19" x 7" x 10-3/4". Weighs 24 lbs.
Hewlett-Packard 209A 4Hz-2MHz Audio Oscillator
https://www.kenrockwell.com/audio/hp/209a.htm
This generator is ideal for live hands-on testing. With the HP 209A, it's trivial to test for audible distortion and measure frequency response in just about any system, far easier than with more advanced and complex digital test gear. It generates sine (0.1% THD) and square waves (50 nS rise/fall time). The ranges are: 4-40 Hz 20-200 Hz
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