is this the mirage BD-35 dual band amp listed for $199?
You need a power supply and a jumper cable to go from your radio to the amp. 
Also, check out what kind of connecters are on the amp so you can order the 
correct ends on the jumper cable for your HT and the amp's input 
connecter...as well as to connect your antenna.
It doesn't indicate on the Mirage sight, at least not in the brief 
description, what type of connecters are used for the input and outputs on 
the amp itself.
They are either BNC or so239 also known as UHF female connecters.
I don't recall exactly what antenna and radio you are using, so perhaps let 
us know and then me or someone can let you know exactly what coax jumper, 
and cable ends you will need to hook everything up.
I agree though, that if you are using a magnetic mount antenna indoors, that 
45 watts output may be asking for trouble with both RFI issues, as well as 
safety issues being in close proximity to the radiating element.
Though, that said, many people use 45 or 50 watts in a mobile with the 
antenna sitting on the roof of their vehicle 6 inches from their head, so 
it's probably not that big a deal.
Also, if you are using an indoor antenna, jumping to 45 watts may not yield 
the results you want, IE, getting into more distant repeaters or getting a 
significantly better signal into the repeaters you already get into.
You are dealing with allot of RF blockage inside a dorm building and 
sometimes increasing power doesn't fix the problem of poor signals into the 
repeater.
It may help a little, and if your antenna is near a window that faces the 
repeater you wish to get into more strongly, then the jump in power will 
help.
Just a couple things to consider is all.

73
Colin, V A6BKX
-----Original Message----- 
From: Ashley Bernard
Sent: Sunday, November 30, 2014 5:41 AM
To: [log in to unmask]
Subject: power amplifiers

so, midst the chaos of after thanksgiving shopping, I=E2=80=99ve =
stumbled upon a power amplifier online. My only question is do I need =
other devices to make this work? Of course I can=E2=80=99t exactly look =
at the setup figure to understand what I need to connect to what. 
I=E2=80=99=
m guessing I need a power supply and a second line of coax besides that =
from the antenna to the radio?
The power amplifier I=E2=80=99m looking into is the mirage b35.
Thanks.
Ashley KC1CPS=