[ICOM] Tuning 7600

[Gary Smith]

I have a new Icom 7600 and am using it with a DX Engineering vertical antenna.  
It works OK with the automatic antenna tuner, but I want to use it with my 
Palstar external tuner and eventually connect it to a linear.  Is there a way, 
without using a key, to generate transmit power output so that I have drive 
power to tune the external tuner?  If not, I don't have a keyer; is there a way 
to construct a plug that will allow me to get output power for tuning?

Thanks and 73,

Gary
WA1TJB