I cannot get a signal in one room in my house is there a way to increase the signal output

There are a number of configurations for a mixer like the 1832, the most common are PA system and Recording system. There are Main output jacks which carry the mix as summed in the main faders. These in a PA system would feed the pa amplifiers which drive the house speaker system for the audience. These connectors are XLR 3 pin type on the rear, intended for professional pa amplifiers which use balanced +4dbv line input level. Amplifier which have 3 pin XLR connectors for input signals can accept that high level signal. For home style HiFi amplifiers, the signal level is nominally -10DBv and balanced or unbalanced signal lines with 1/4in diameter phone plugs which are connected to the mixer by way of a second set of Main output connectors which are 1/4in phone jacks. Use whichever amplifier input level your amp has.
If you are not using it as a main PA house mixer, but using it for recording, the main output connectors go to a 2 channel recorder or computer sound card recorder. The power amp and your monitor speakers are connected to the connectors labeled "Control Room" (CTRL Rm). These output are useful for recording because the signal through the mixer can be monitored from several buses, Solo, main mix, selected by buttons provided. The buttons only affect the signal heard through the control room monitors, and not the main output which only sees the main mix so selecting "solo" does not interrupt the signal going to the recorder while the engineer in the control can be checking other signal paths through the board.

There are several things you can do to improve your signal strength.

1) Locate your router away from any devices that may cause interference such as microwaves, cordless phones, walls and metal objects (e.g. file cabinets)
2) Locate your router as high as possible in the room
3) Change the channel your router is using
4) Replace the antenna with a more powerful antenna
5) Increase the transmitter power output in the router settings

Try moving the wireless router around and or higher.
If the wireless router is in a different room and the room has concrete walls of foils insulation in the walls, this will weaken the wireless signal. AND/OR
You can connect add a antenna to your computer. Have a look at this device. Normal 0 USB High Gain Antennas www.pricewatch.com/gallery/networking/high_gain_antenna

put coax from sky box output then into splitter in loft ampifier and conect all other coax that run down to other rooms to the outputs in amplifrer and turn on sky and put menu on then tune tv's in on anolog station

I presume you need Internet access in this house using a wireless network.
The best place to locate the wireless router is in a spot centrally located where the radio signals can reach the rooms where the computers are located. The DSL or cable modem/connection would also need to be in this area so it can connect to the wireless router.
If the wireless router is in a multi-storey house and the floor slab and walls are concrete and/or brick, then the radio signals will be impeded and the signal strength to some rooms will be weak.
In such circumstances, it maybe better to install network cables from these rooms to the wireless router, or install wireless access point repeaters to increase wireless coverage.
If you are not sure how to setup and install this network, then I suggest you get help from a computer savy friend or from your computer friendly shop.

If you are detecting a lot of other networks in the area you can try to switch to a different channel, but from what you are describing it seems that there is a problem with that router and replacing it completely might save you a lot of time and trouble. If it's under warranty I would request an RMA for replacement or take it back to the store for a refund/replacement.

What is between the router and the location that will not allow you to connect? Is there anything electrical or is there concrete, etc.

Here a couple of ideas:

A) Move the router to a high spot in the current room
B) Create a reflector screen to help direct the signal to where you
need it. You can find the how to instructions on line and it's free
to try.
C) Check with Linksys to be sure you have the latest firmware
version installed.
D) Change the firmware in your router to an open source version
like tomato. Their version will allow you to increase the signal
output. Be sure to back up your current firmware before you do
this.

Be careful if you try step C. If you mess it up it can be a pain to recover from.

Your better off getting a repeater for your wireless and strategically place it in a room where it can amplify to the next and so on. Concrete is virtually impossible to pass through with the signals wireless transmit so a repeater strategically placed is the best way in my opinion.

YES WHAT MODULATOR ARE YOU USING/? YOU CAN SEND AS MANY AS U WANT WITH THE RITE ONE

Yes, this is done many times. If you do have a degraded picture because of all the slitters you can just add a antenna booster amp to compensate.