U.S. Army Technical Manual TM 11-271 – RAWIN Set AN/GMD-1 (1950)

Offered here is an original Department of the Army Technical Manual TM 11-271, covering the RAWIN Set AN/GMD-1, dated December 1950.

This manual documents an early Radar Wind (RAWIN) system used by the U.S. military to track weather balloons and measure upper-atmosphere wind speed and direction using radar.

Details:

• Manual Number: TM 11-271
• Date: December 1950
• Issued by: Department of the Army
• Equipment: RAWIN Set AN/GMD-1
• Type: Technical manual

Historical Significance:

RAWIN systems were used to collect atmospheric data critical for aviation, artillery, and later missile operations. By tracking radar-reflected weather balloons, operators could determine wind conditions at various altitudes.

This represents early military use of radar for meteorological and operational planning purposes.

A good addition for collectors of:

• Military radar and weather systems
• Signal Corps equipment
• Cold War-era communications and electronics

Condition:

• Complete and intact
• Moderate age-related wear and toning
• Some spotting, handling marks, and discoloration to cover
• Previous owner markings on cover
• Interior remains readable

Please review photos for full condition details.

Collector Appeal:

• Original government-issued manual
• Radar-related system documentation
• Companion piece to AN/GMD-1A manuals
• Good crossover appeal to aviation and weather collectors