Radio Codes

[Casper]

So, perhaps this is a dumb question, perhaps it's clearly answered on the wiki or forums, but I've scoured both and haven't found it. What are the codes for specific radio channels?
I know that ';' is obviously the Sulaco channel (all Sulaco and Marines), ':a' is the Alien hivemind channel.
What the crap are the others? ':v' used to be the Command channel, but that hasn't been working later. ':d' was Delta, which was great except that it didn't correspond to ':a' being alpha, etc.
Can somebody with lotsa knowledge lay out all the codes for me? I've tried AHelping and asking in OOC, but haven't had any luck.
If it's cool, I'll then update the Wiki with a 'using your headset' page, because a lot of newfolx ask about it and while telling them ':h' for marines and ';' for sulaco is a quick fix, it precludes them being really useful as LO's or Commanders.

[apophis775]

:q alpha
:y Bravo
:f Charlie
:d Delta
:v Command
MP
:a Hivemind

Bravo and charlie may be switched. Examine your headset, to see the codes...

[Casper]

Brilliant, thanks Chief.

[UnknownMurder]

Settled. Closed.