A Positive Frequency - Vietnam Era radio operator honored for heroic efforts > Air Force Reserve Command > News Article
![They Assumed the Enemy in Vietnam Was Incapable of Intercepting Radio Communications. They Were Wrong They Assumed the Enemy in Vietnam Was Incapable of Intercepting Radio Communications. They Were Wrong](https://www.historynet.com/wp-content/uploads/2022/10/American-Vietnam-period-M1-pattern-GI-helmet-with-squad-level-radio-receiver-AN-PRR-9-and-transmitter-AN-PRT-4A-WINTER-VIEP-23-1024x951.jpg)
They Assumed the Enemy in Vietnam Was Incapable of Intercepting Radio Communications. They Were Wrong
![Original Vietnam War U.S.M.C. Radio Set RT-505B / PRC-25 Backpack Radi – International Military Antiques Original Vietnam War U.S.M.C. Radio Set RT-505B / PRC-25 Backpack Radi – International Military Antiques](https://www.ima-usa.com/cdn/shop/products/ONSV21SVE4__11.jpg?v=1634319877)
Original Vietnam War U.S.M.C. Radio Set RT-505B / PRC-25 Backpack Radi – International Military Antiques
![NSA/CSS on X: "During the Vietnam War, the Army used PRD-1 direction- finder with an R395 receiver to find the direction of enemy radio transmitters. They were dangerous to use in the NSA/CSS on X: "During the Vietnam War, the Army used PRD-1 direction- finder with an R395 receiver to find the direction of enemy radio transmitters. They were dangerous to use in the](https://pbs.twimg.com/media/Dm-zEkAX4AATiLY.jpg)
NSA/CSS on X: "During the Vietnam War, the Army used PRD-1 direction- finder with an R395 receiver to find the direction of enemy radio transmitters. They were dangerous to use in the
![They Assumed the Enemy in Vietnam Was Incapable of Intercepting Radio Communications. They Were Wrong They Assumed the Enemy in Vietnam Was Incapable of Intercepting Radio Communications. They Were Wrong](https://www.historynet.com/wp-content/uploads/2022/10/Platoon-Commander-US-Marine-using-radio-during-operations-Vietnam-1967-WINTER-VIEP-23.jpg)