A/V set up

i have no idea what you mean by pushing over CAT5 but if you want an RF remote that has IR repeaters, you should check out OSIRIS. A pain in the ass to program but once that's done it works like a champ. IR sensors are placed very close to devices you want to control and hide; it includes a small plug in RF antennae that can also be hidden but has a greater range if exposed.

Something like this?

http://www.amazon.com/Atlona-Extender-1000ft-RECEIVER-INCLUDED/dp/B003WT84UO

Not sure if they still sell it but radio shack sold a retransmitter that at least let you place the transmitter a few feet away so that you could have the equip in the closet and the transmitter outside.

There are a lot of these things out there, mostly in a package that lets you transmit HDMI over Cat5 (like this one: http://www.gefen.com/pdf/EXT-HDMIIR-CAT5.pdf).

Since you are solely trying to transmit IR, note that you can simply splice the IR transmitter and receiver into the Cat5 on each side and call it a day. You don't need a device in the mix at all.

Xantech has loads of IR distribution systems...I have their A/V kit which also carries stero L&R over the same CAT5 line: xantech.com/Audio/AVDistribution/DIGI-5/

Depending on how far away your closet is, one or more of these should do the trick:

amazon.com/XANTECH-29110DBKit-Designer-Hidden-Infrared/dp/B001QT9AOG/ref=pd_sxp_grid_pt_1_2/183-8040849-6592746

amazon.com/Cables-Go-Acoustics-40430-Infrared/dp/B001BLTDZA/ref=pd_sxp_grid_pt_0_0/183-8040849-6592746

xantech.com/video/HighDefinition/HDMIDistribution/HDMIC5IR/ (this one uses cat5, and like the suggestion from stlblufan, also carries HDMI over the same line)

Sorry for truncating the web addresses - I'm a new poster here and i guess too many active hyperlinks are considered spam.