Panel Control model C-834 / TMQ-5. Signal Corps - US Army Signal. Recorder Frequency-Time RD88A / TMQ-5. Radiosonde Recorder AN/TMQ-5. LY-1390A / TMQ-5. This is a field unit which records Radiosonde/Windsonde data. Military surplus. Manual can be purchased online.
This item is complete and powers up, however, we were unable to fully test it. This item is being sold as is for parts.