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. Radio-frequency amplifiers . Fig. 5.—Six-stage radio-audio-frequency amplifier. in Figure 6. A is a square tube of insulating material about one-half inch inside measurements, with a wall about one-sixteenth. Fig. 6.—Iron-core radio-frequency transformer. inch
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The Bureau: XCOM Declassified Walkthrough Welcome to XCOM
The Bureau: XCOM Declassified Walkthrough Welcome to XCOM
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Frequency
Circular of the Bureau of Standards No. 573: Phase of the Low Radiofrequency Ground Wave; NBS Circular 573: Johler, J R, Kellar, W J, Walters, L C: 9781014666680: Amazon.com: Books
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The principles underlying radio communication . of completely modulatedwaves, using 500-cycle modulation, is described in Bureau ofStandards Scientific Paper No. 381. Heterodyne or other beat reception may also be advantageouslyused, as
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WWII_Communications_Gear_Part1
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Radio-Frequency Resistance and Inductance of Coils Used in Broadcast Reception - Page 660 - UNT Digital Library