Sunday Six: Radio Detection

Today's Sunday Six comes from Chapter Ten of Rock Killer:

Trudeau was bent over his radio computer.  He scanned the spectrum up and down with the RF gain on maximum.  He'd heard some Russian (Mars? he wondered), a lot of static, but nothing that sounded like SRI transmissions.  He wasn't too worried.  He had a week, at least.  It was just that Griffin was breathing down his neck to find the asteroid's transmissions.