At about 25 minutes the "walkie talkie radio" the Thrush agent is using is nothing more than a TV rabbit ear antenna of the kind that attaches to the back of the television set.
In the middle of Act V when the "hydrogen device" was assembled Dr. Yahama (Richard Loo) made the statement "We have transistorized the hydrogen bomb". But the one sub assembly has two vacuum tubes on it. Additonally the large black cylinder which presumably is the active part of the "bomb" is nothing more than a large capacitor of the type used in televisions or audio equipment.