I cracked the case on a Tranzeo radio today and noticed that it is using an Atheros mini-pci card.

Also, an nmap scan of the radio shows this fingerprint:

SInfo(V=3.81%P=i386-redhat-linux-gnu%D=3/5%Tm=440AF22A%O=80%C=1)
TSeq(Class=RI%gcd=1%SI=3F543%IPID=I%TS=U)
TSeq(Class=RI%gcd=1%SI=4EB51%IPID=I%TS=U)
TSeq(Class=RI%gcd=1%SI=4DCCF%IPID=I%TS=U)
T1(Resp=Y%DF=N%W=1000%ACK=S++%Flags=AS%Ops=M)
T2(Resp=N)
T3(Resp=Y%DF=N%W=1000%ACK=S++%Flags=AS%Ops=M)
T4(Resp=Y%DF=N%W=0%ACK=O%Flags=R%Ops=)
T5(Resp=Y%DF=N%W=0%ACK=S++%Flags=AR%Ops=)
T6(Resp=Y%DF=N%W=0%ACK=O%Flags=R%Ops=)
T7(Resp=Y%DF=N%W=0%ACK=S%Flags=AR%Ops=)
PU(Resp=Y%DF=N%TOS=0%IPLEN=164%RIPTL=148%RID=E%RIPCK=E%UCK=E%ULEN=134%DAT=E)

Would the "i386-redhat-gnu" line indicate that it is running linux? (which could mean a possible port of OpenWrt)