In 1941 he was hired as an engineer for MacMillan Petroleum Company's flagship radio station, KMPC, in Los Angeles, California.
That job was interrupted by World War II; he served in the United States Army Signal Corps on General Dwight D. Eisenhower's staff.
[1] Loyd Sigmon received recognition and honors from local and state government agencies, the National Safety Council, and broadcasting and radio organizations.
He was quoted in the Los Angeles Times as saying, "I ran a multimillion-dollar corporation, but it's the Sig Alert that people remember me for.
"[citation needed] Sigmon and his wife Patricia "Pat" Lee had a home in Palm Springs, California in the late 1950s.