I read that semi-rigid cable is very usefull. I bought RG402 cable but i think that it is not very manageable. Maybe the most common rigid cable is RG405?? Thanks a lot!
At 1GHz, RG402 (2.2mm) has 0.64 dB/m attenuation, when RG405 (3.58mm) has 0.37 dB/m.
As a general rule, a thicker coax cable have lower insertion loss and higher power capability than a thinner one, with the same dielectric.
Is preferable to use a thicker one because anyway semi-rigid cables are used generally in places where they don't move too much.