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The single DSAP-3 (Defense Satellite Application Program Block 3) was a modified DSAP-2 satellite to provide experimental tactical access to weather data.

It was equipped and launched expressly for tactical uses on 20 May 1965. A tactical readout station near Saigon was built.

The designation DMSP-3 (Defense Meteorological Satellite Program Block 3) was retroactively assigned to this satellite.

Nation: USA
Type / Application: Meteorology
Operator: US Air Force (USAF), NRO
Contractors: RCA Astro
Equipment: ?
Propulsion: ?
Power: Solar cells, batteries
Orbit: SSO
Satellite COSPAR Date LS Launch Vehicle Remarks
DSAP-3 F1 (OPS 8386) 1965-038A 20.05.1965 Va 4300-B6 Thor-DSV2S Burner-1 (2)

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