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The Type 1304-B Beat-Frequency Audio Generator - GenRad ...
https://www.rsp-italy.it/Electronics/Magazines/General%20Radio%20Experimenter/General%20Radio%20Experimenter%201954%2006.pdf
GENERAL VOLUME XXIX No. 1 JUNE, 1954 ~ ~=-~=====~ THE TYPE 1304-B BEAT-FREQUENCY AUDIO GENERATOR • IN THE 27 YEARS of its existence as a commercial instrument, the best frequency oscillator hus become recog nized as the most satisfactory audio frequency power source for general purpose usc. Because of its constant out
Beat Frequency Audio Generator 1304-B Equipment General Radi
https://www.radiomuseum.org/r/gener_raco_beat_frequency_audio_generator_1304_b.html
Model: Beat Frequency Audio Generator 1304-B - General Radio Company; Material: Metal case : Shape: Miscellaneous shapes - described under notes. Dimensions (WHD) 19.5 x 7.25 x 15.25 inch / 495 x 184 x 387 mm : Notes: 20Hz to 40kHz in 2 ranges. Available in rack (-BR) or table (-BM) mount versions. Net weight (2.2 lb = 1 kg) 39 lb (39 lb 0 oz ...
The GR 1304-B Beat Frequency Audio Generator
http://www.conradhoffman.com/GR1304B.htm
The GR 1304-B Beat Frequency Audio Generator. Today we can build a 20 to 20 kHz sweepable oscillator using a single IC that fits in a small BAND·AID® box. The well known, though mostly obsolete, ICL8038, Exar 2206, and other monolithic circuits made this a trivial task a few years ago and today we have powerful digital synthesis chips smaller ...
THE TYPE 1304-B BEAT-FREQUENCY
https://worldradiohistory.com/Archive-Company-Publications/Archive-General-Radio/GR%20Exp%201954_06.pdf
The General Radio Company has been manufacturing beat-frequency oscil lators since 1927, when we introduced the first commercial version of this popu lar instrument. The latest design, the TYPE 1304-B Beat-Frequency Audio Generator, is, we believe, the finest beat frequency audio oscillator that has ever been offered for sale.
manual
http://www.jptronics.org/GR/GR1304B/GR1304B.pdf
1.1 PURPOSE. The Type 1304-B Beat-FrequencyAudio Generator (Fig- ure 1) is a signal generator capable of supplying up to 1 watt into a 600- ohm load at frequencies between 20 and 40,000 cycles per second. The Audio Generator is useful in amplitude-vs-frequency tests on audio-fre- quency equipment, and, as a general-purpose audio generator, is valu-
GR Op. Inst. TYPE 1304-B Beat Frequency Audio …
https://www.ebay.com/itm/122024609990
TYPE 1304-B Beat-Frequency Audio Generator. The pictures provided are of the item unless otherwise stated. Used - Copy - Good Condition. We are located in Burnsville, MN.
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