I'll echo what the others said, they about covered it. I'll add connectors, adapters, and patch cables. You'll always need to go from SMA to N to UHF to BNC, etc etc. A set of *convertible* adapters is great, you choose the what to what and gender and couple them together to make whatever adapter you need. An adjustable bench-top power supply is very helpful, again with adapters, Powerpole, coaxial from 1.5mm to 2.5, EIAJ, spade lugs, molex, etc.