cobra 23 plus

[greywolf]

can anyone tell me about these?i have 1 for my crewcab.i need info on antena and how to tune it/them
all i have is the radio no cable or antena,
how long should the cable be?
what kind of antena should i get?
where the best place to mount antena(dont want it on the roof,buttttt)

i also have a uniden pro 510xl for my sub,a guy called it a median jumper(only good for the highway)
same ?s as above

thanks