![SOLVED: 5. The first widely-used radio receivers employed crystal detectors to demodulate the AM signals (these radios could be built using common household materials, see below on the left). A crystal detector SOLVED: 5. The first widely-used radio receivers employed crystal detectors to demodulate the AM signals (these radios could be built using common household materials, see below on the left). A crystal detector](https://cdn.numerade.com/ask_images/3eac04d5ca224be590e621705b351e5e.jpg)
SOLVED: 5. The first widely-used radio receivers employed crystal detectors to demodulate the AM signals (these radios could be built using common household materials, see below on the left). A crystal detector
![Radio FCT revenues fell to 80% during first 90 days of lockdown: Monalisa Mandal, Fever FM - Media Samosa Radio FCT revenues fell to 80% during first 90 days of lockdown: Monalisa Mandal, Fever FM - Media Samosa](https://mediasamosa.com/wp-content/uploads/2020/07/fi-interview4.jpg)
Radio FCT revenues fell to 80% during first 90 days of lockdown: Monalisa Mandal, Fever FM - Media Samosa
![Official FCTA on Twitter: "Get updates on the efforts of the FCT Administration on curbing the spread of #COVID19 in the FCT. Tune in to the listed Radio and TV stations in Official FCTA on Twitter: "Get updates on the efforts of the FCT Administration on curbing the spread of #COVID19 in the FCT. Tune in to the listed Radio and TV stations in](https://pbs.twimg.com/media/EU_HH-FWkAM7TRH.jpg:large)