So you have an old tube-type transmitter as a backup. It ran perfectly when you last turned it on two years ago to substitute for your then-ailing solid-state main transmitter. Now you need it again.

Offshore is the new frontier in the search for renewable energy. The potential expansion target for North Sea in Europe is 300 GW by 2050. According to the European Commission, an estimated 240 GW to ...

Solid-state ac supplies replace motor-generator and tap-changing transformers to offer the same tests at the push of a button • Solid-state ac-power sources combine the variable-frequency and ...