Radio-ROSTO is seen as the precursor to a proposed constellation of Radio-M spacecraft. Also launched by Rokot but into orbits of 950-1,000 km at 65 degrees, the network would consist of up to six spacecraft working with uplink and downlink frequencies of 435 MHz and 146 MHz and an output transmitter power of 20 W. Radio M spacecraft will be nearly twice as massive with a total mass of 120 kg. An alternative system would consist of six Radio-ROSTO class spacecraft in circular orbits near 1,950 km at inclinations of 65 degrees (References 264 and 266). The Radio program dates back to the piggyback launch of Radio-1 and Radio-2 in 1978, followed by Radio-3 through Radio-8 in 1981. Subsequent Radio transponders were carried by other host spacecraft (see below).
264. Novosti Kosmonavtiki, 17-31 December 1994, pp.17-19.
265. ITAR-TASS News Agency, and Ostankino Television, 26 December 1994.
266. Y. Gomostayev, op. cit., Vol. II, pp. 164-171.