![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)
They Assumed the Enemy in Vietnam Was Incapable of Intercepting Radio Communications. They Were Wrong
![Original U.S. Vietnam War CIA “Village Radio Program” TR20 Hybrid Tube – International Military Antiques Original U.S. Vietnam War CIA “Village Radio Program” TR20 Hybrid Tube – International Military Antiques](https://www.ima-usa.com/cdn/shop/products/ONJR22OL0017__06.jpg?v=1666194495)