![A landing signal officer uses a sound-powered telephone headset during flight operations aboard the nuclear-powered aircraft carrier USS DWIGHT D. EISENHOWER (CVN 69) - NARA & DVIDS Public Domain Archive Public Domain A landing signal officer uses a sound-powered telephone headset during flight operations aboard the nuclear-powered aircraft carrier USS DWIGHT D. EISENHOWER (CVN 69) - NARA & DVIDS Public Domain Archive Public Domain](https://cdn10.picryl.com/photo/1985/01/01/a-landing-signal-officer-uses-a-sound-powered-telephone-headset-during-flight-efff38-1024.jpg)
A landing signal officer uses a sound-powered telephone headset during flight operations aboard the nuclear-powered aircraft carrier USS DWIGHT D. EISENHOWER (CVN 69) - NARA & DVIDS Public Domain Archive Public Domain
![Original U.S. WWII U.S. Navy Talker Helmet With Sound Powered Phone an – International Military Antiques Original U.S. WWII U.S. Navy Talker Helmet With Sound Powered Phone an – International Military Antiques](https://www.ima-usa.com/cdn/shop/products/ONACST2241__16.jpg?v=1643407781)
Original U.S. WWII U.S. Navy Talker Helmet With Sound Powered Phone an – International Military Antiques
![The Reliability of Sound-Powered Phone Systems | Naval History Magazine - February 2021 Volume 35, Number 1 The Reliability of Sound-Powered Phone Systems | Naval History Magazine - February 2021 Volume 35, Number 1](https://www.usni.org/sites/default/files/BJM-NH-JF-21%20opener.jpg)
The Reliability of Sound-Powered Phone Systems | Naval History Magazine - February 2021 Volume 35, Number 1
![File:U.S. Navy Operations Specialist 3rd Class Gage Crabtree communicates through a sound-powered telephone while standing watch on the bridge of the amphibious command ship USS Blue Ridge (LCC 19) as the ship File:U.S. Navy Operations Specialist 3rd Class Gage Crabtree communicates through a sound-powered telephone while standing watch on the bridge of the amphibious command ship USS Blue Ridge (LCC 19) as the ship](https://upload.wikimedia.org/wikipedia/commons/thumb/d/de/U.S._Navy_Operations_Specialist_3rd_Class_Gage_Crabtree_communicates_through_a_sound-powered_telephone_while_standing_watch_on_the_bridge_of_the_amphibious_command_ship_USS_Blue_Ridge_%28LCC_19%29_as_the_ship_120810-N-QI421-040.jpg/640px-thumbnail.jpg)