[tankbarrell]

Richard, to some extent, the wireless installation depends on the use of the carrier but the standard set up for a Mk 1 is:-

19 set mk 2 c/w power supply unit no1
carrier no22
Aerial base no9
Aerial base no10
Control unit no2 mk 2
Control unit no1 mk2
Secondary batteries
Charging set.
Plus a variety of leads, mounting brackets etc etc. most of whish are specific to installation.

All the parts can be found in the usual places with the exception of the batteries, i.e. ebay but parts are getting harder to find and hence expensive!

No licence is required unless you transmit or intend to do so but be aware that some elements radiate a signal even when on receive so it's best not to take the chance.
Also be aware that the set is full of electrolytic capacitors which will have degenerated over time. If you apply full voltage, they will explode spectacularly! They can be reformed with care but I would advise getting someone who knows what they are doing as the HT side of the PSU generates very high voltages.

If it's just for show then it's no problem.

Adrian