Emergency! - Season 3 - Eps 1: Frequency
When Johnny's policeman friend is injured in a car crash, the paramedics can't reach the hospital because another squad is using the biophone. A child with a mysterious malady turns out to be drunk. Roy and John assist at the hospital when the victims of a motorcycle gang war are brought in for treatment. An artist becomes trapped in his own sculpture. A father and son are trapped in a collapse at a construction site.
About Emergency!

Title: Emergency!
First Air Date: 1972-01-22
Last Air Date: 1979-07-03
Status: Ended
Rating: 7.8/10 (from 44 votes)
Language: EN
Seasons: 8
Total Episodes: 128
Network: NBC
Genres: Action & Adventure, Drama
Production Companies: Universal Television, Emergency Productions, Mark VII Ltd., Universal Television Entertainment, NBC Studios
Synopsis
The crew of Los Angeles County Fire Department Station 51, particularly the paramedic team, and Rampart Hospital respond to emergencies in their operating area.
Cast

Robert Fuller
Kelly Brackett

Julie London
Dixie McCall

Bobby Troup
Joe Early

Randolph Mantooth
John Gage

Kevin Tighe
Roy DeSoto

Marco López
Fireman Marco Lopez

Mike Stoker
Fireman Mike Stoker

Tim Donnelly
Fireman Chet Kelly

Michael Norell
Capt. Hank Stanley