[ICOM] R7000 dumb question of the day

[Bonddaleena at aol.com]

Hello. I've been having a lot of fun with my 'new' R7000. I use it with an  
RS discone (until I get my towers up) and for 50-900 Mhz, I use a Channel  
Master TV preamp, which works really well.
 
I was in Lowe's today, and noticed they had a VERY small preamp for 900 Mhz  
to 2 Ghz, for $16. 13 db gain claimed.
 
My question is this:
 
It is a 'power through' model. No power connections available. Obviously,  
they send 12 VDC up the coax to power it. I assume it would be easy to put a "T" 
 connector before the preamp and supply it with 12 VDC via a small choke. My  
R7000 service manual is on the way, but am I to assume that providing 12 VDC 
to  the input side of the preamp will also place 12 VDC on the ant connector 
of the  R7000? Am I also correct in assuming that the R7000 will have a DC 
blocking cap  early in the signal path, after the antenna connector? I sure don't 
want to put  12 VDC into the radio and 'smoke it'. I was going to put a low 
voltage ohmmeter  on the N connector, but with my luck, I'll take out the front 
end of the radio!  I have noticed that the IF output, has a DC voltage 
superimposed on the 10.7 Mhz  signal.....
 
 
thanks in advance!
 
ron
 
N4UE