He acquired publications such as the Evening News; the Daily News International, a newspaper for expatriates; the Philippine Sun, a bilingual newspaper in English and Tagalog; Bulaklak, a Tagalog magazine; and a tourist magazine called Manila Guide Fortnightly. When martial law was declared in 1972 and 292 radio stations all over the country were closed, DZRH managed to survive but under strict government censorship. All Elizalde publications also closed down and Fred focused on managing the family’s sugar mills.
Kanyang itinayo ang mga pahayagang Evening News; Daily News International, isang diyaryo para sa mga dayuhang nakatira sa bansa; Philippine Sun, isang pahayagan na nilalathala sa Ingles at Tagalog; Bulaklak, isang magazine na Tagalog; at Manila Guide Fortnightly, isang magazine tungkol sa turismo.Nang ideklara ang martial law noong 1972 at ang 292 istasyon ng mga radyo sa buong bansa ay isinara, ang DZRH ay nakaligtas at nagpatuloy umere ngunit sa ilalim ng mahigpit na sensura ng pamahalaan.