USMC/Navy Headset with microphone for TBY-8 high frequency transmitter-receiver

The equipment is a very high frequency transmitter-receiver of the ultra-portable or pack type. The equipment provides 2-way communication by either voice (telephone) or MCW (telegraphy) on any one of 131 different channels in 4 bands with frequency range of 28 to 80 Mc. The equipment is supplied complete, including battery, power supply and antenna and can be set up for operation in a minimum of time. It is designed for carrying as a knapsack load and can be operated by one man while it is mounted on his back