You can easily identify most antennas by shape...try searching on the internet to find out what they look like. You probably have all of these:
VHF Comms
VOR
G/S
Transponder
DME
ELT
You may also have:
GPS
ADF (older ADF antennas will be a long wire attcahed between two points on the airframe).
LORAN
The DME and transponder antennas are the same freq band, and are often identical.