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> Hewlett packard 3550A frequency response test set -1962
Hewlett packard 3550A frequency response test set -1962
Hewlett Packard 3550A Frequency Response Test Set -1962
Hewlett Packard 3550A HP Portable Frequency Response Test Set with Plugins
* Vintage Unit introduced by HP in 1962
* Here is what HP said about it. "THE new -hp- 3550A Portable TestSet, designed specifically for transmission line testing, will find wide use in alignment and maintenance of multichannel communication systems. The test set consists of a wide-range oscillator, an electronic voltmeter, and a patch panel containing attenuators and line-matching transformers. The battery-operated instruments are completely transistorized, contributing to the lightweight and compactness of the set."
* The 30-pound weight is a distinctadvantage when the set is to behand-carried into the field or into awkward to reach places, such asairplane structures or isolated telephone repeater stations. The ruggedaluminum case is splash proof since no vent holes are required for the small amount of heat generated bythe transistorized instruments
* Mfg PDF: http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1962-11.pdf
