OV4 1R and OV4 1T [Raytheon]
The OV4 1R and OV4 1T (Orbiting Vehicle 4) satellites were an experiment to test the feasibility of using the ionosphere's F-layer as a wave guidance for HF and VHF transmissions between satellites out of line of sight of each other ("Whispering Gallery").
The 109 kg OV-1T (Transmitter) carried transmitters operating at 20 MHz, 34 MHz and 46 MHz and incorporated a small rocket motor to ensure separation from OV4-1R.
The 136 kg OV4-1R satellite carried receiving equipment.
A second set of OV4-"Whispering Gallery" satellites was to be launched in 1967 as OV4-2R and OV4-2T but the programme had been cancelled along with the cancellation of the MOL programme.
|Type / Application:||Experimental|
|Operator:||US Air Force (USAF)|
|Mass:||136 kg (#1R); 109 kg (#1T)|
|Orbit:||298 km × 305 km, 32.82°|
|OV4 1R||1966-099B||03.11.1966||CC LC-40||Titan-3C||with OV4 3, OV1 6, OV4 1T, Gemini B *|
|OV4 1T||1966-099D||03.11.1966||CC LC-40||Titan-3C||with OV4 3, OV1 6, OV4 1R, Gemini B *|
|OV4 2R||-||cancelled||with ?, OV4 2T|
|OV4 2T||-||cancelled||with ?, OV4 2R|