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Accession Number:

AD1166769

Title:

Test on Head Telephone Receivers, Type 49016 Head Bands, Type 49028 and Diaphragms Type 49033

Author(s):

• Hastings, Harris F.

Author Organization(s):

• NAVAL RESEARCH LAB WASHINGTON DC

Report Date:

1942-10-17

Abstract:

The receivers were tested to determine the following characteristics: (a) Compliance with specifications as to dimensions and materials. (b) Operation at high energy input (50 milliwats). (c) Effect of mechanical shock. (d) D.C. resistance. (e) Impedance at the frequency of primary resonance. (f) Efficiency factor at the frequency of primary resonance. (g) Primary resonance frequency. (h) Magnitude of secondary resonance peak. (i) Band width of primary resonance peak. (j) Band width of secondary resonance peak. (k) Effect of humidity on sensitivity. (l) Effect of humidity on insulation resistance. (m) Effect of humidity on materials.

Document Type:

Conference:

Journal:

Pages:

11

File Size:

0.36MB

Contracts:

Grants:

Descriptors:

• measurement
• telephone receivers
• materials
• navy
• military research
• new york
• errors
• resonant frequency
• frequency
• impedance
• resonance
• specifications
• abstracts
• corporations
• direction finders
• electrical properties
• humidity

SubjectCategory:

• Communications

Communities of Interest:

• Advanced Electronics

Distribution Statement:

Approved For Public Release

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