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Replica Grasshopper Send-Receive Morse Key, Late 20th Century
Inventory Number: 70649
Number of documents: 1
Document Type: Miscellaneous Note
Document Heading: Grasshopper Send-Receive Morse Key
Text:
The 'Grasshopper' Send-Receiver Morse Key, known as such because of its distinctive shape, was initially developed by Marconi around 1896. The Morse key acted as a 'send/receive' switch. The terminal at the rear of the ebonite rod was connected to the aerial by a flexible wire, and the screened terminal beneath it was connected to the receiver by a lead-covered wire. A spring kept the terminals' contacts together until the operator pulled the handle for transmitting, thereby disconnecting aerial and receiver - this disconnection being important to prevent damage to the receiver by the high powered transmitter pulses.
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