(mar 22, 2007) -- four cubesats operating on amateur radio frequencies will be among seven cubesats set to head into space on a dnepr launcher tuesday, march 27, from the baikonur cosmodrome in kazakhstan. cubesats carrying amateur radio payloads are calpoly's polysats cp3 and cp4 (similar to photo), which will transmit 1200 bps fm afsk (ax.25) on 436.845 mhz and 437.325 mhz, respectively, under an fcc part 5 experimental license; university of louisiana's cape-1, which will transmit 9600 bps fm fsk (ax.25) and cw telemetry during opposite 30-second intervals on 435.245 mhz using the call sign k5usl (forward telemetry reports via e-mail), and the universidad sergio arboleda's libertad-1, which will transmit 1200 bps fm afsk (ax.25) on 437.405 mhz under the call sign 5k3l. cubesat separation is scheduled to occur march 27 at 0702 utc with first acquisition of signal over south africa at 0708 utc.