Vintage Radiosonde Modulator with Transmitter
A radiosonde is an instrument carried by balloon or other means to various levels of our atmosphere to gather and transmit measurements of various atmospheric parameters such as Pressure, Temperature and Humidity.
This item attaches to the weather balloon
Condition: Good used condition with a crack underneath also plastic snapped on the side connector, please see photographs
Ref: Modulator MD-210/AMT-4B – Johnson Service Company Serial No: 15227
Ref: Transmitter T-435/AMT-4B – Automatic Manufacturing Corp. Serial No: 8445
Good collectors item*