the TS2000 has a so239 connecter for VHF, and an N connecter for UHF...it 
also has two so239 connecters for HF/6meters.
There is also an RCA female connecter on there for use with medium wave AM 
broadcast band receive only antennas
If you have the version with the 1.2GHZ module, there is a coax pig tail and 
an N type  connecter on the end of that.
You would use an external  duplexer if you wish to use a single dual band 
antenna for both VHF and UHF.
One of the features i always wished kenwood put in was the ability to switch 
VHF and UHF to work on one connecter, or have them separate for satellite 
work and what not...that would require a built in duplexer that was 
by-passable.
Seems the radio does damn near everything else, this feature would have been 
a really convenient one.

73
Colin, V A6BS
----- Original Message ----- 
From: "Richard Fiorello" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, December 22, 2011 1:22 PM
Subject: ts2000 basics


> Hi;
> Never had the pleasure of using a ts2000.  Does this radio have pl259
> connectors or an n connector for 2 meters and 440?  Also, when would one
> want or need a duplexer?
> Thanks
>
> -- 
> richard