Headset
Item
Title
Headset
Description
U.S. Army Signal Corps HB-7 Headband, R-14 Receiver Tan leather protective covering stitched over top of each of the adjustable metal headbands, one of which has the number 10 stamped on the underpart. Black bakelite R-14 receiver earphones with an unidentifiable red stamp on each outer element. Attached to the elements is an insulated 101 inch brown braided cloth split receiver communication cord which is attached to a black bakelite connector plug.
Identifier
004.023.002
Format
Provenance
The headphones used in WWII American Aircraft are divided into two categories- Signal Corps and US Navy. Signal Corps versions provided to the AAC/AAF for "non helmet" use in WWII aircraft were either high impedance, HS-23 (4000 ohms) to low impedance, HS-33 (600 ohms) The HB-7 headband was the AAC standard before the war, the shift from high impedance to low impedance earphones was simply a change from R-14 to ANB-H-1 elements that clipped onto the headband. Unfortunately, so many high impedance headsets were already fielded that a plug -in transformer impedance adapter was introduced to make the transition. Low impedance headphones were more reliable and less expensive to make.
Abstract
Poor
Date Created
1940's