Originally Posted by tonyb:
“
What I really need is a wireless sender that can have multiple receivers - does such a beast exist?”
Well, tonyb, I guess it depends how fussy you are about the quality of what you watch. What you say about the set-up in your existing house suggests it uses RF-modulated signals on 75 ohm coax in the walls. A video wireless link (such as those identified from Maplin) will be as good as that, apart from the interference potential.
I had a similar RF cabled arrangement in a house some years ago and it worked well, so please don't think I'm suggesting there's anything wrong with it. But things have moved on hugely in terms of the quality of picture you can get since those happy (

) days when we all watched VHS videos on 4:3 CRT TVs. Now with DVD, Component Video connections (or even HDMI - watch for a flood of new players with this), huge plasma screens or projection systems (getting more affordable), and 5.1/DTS surround sound, the whole experience is potentially very different. But not if you ship the signal through a wireless link such as we're talking about!
I have a Philips wireless video link between my living room and bedroom. It has 2 channels and the transmitter in the living room has 2 SCART inputs. It is fed by RGB video and stereo audio signals from a Thompson DTT Freeview tuner and my nice Harmon Kardon DVD player (also linked using component directly to the projection TV). The Philips receiver is in the bedroom linked by SCART cable to a Philips 17 inch LCD TV - but by this stage (indeed, since leaving the transmitter) the video signal is composite (the audio is still straight stereo). So with these limitations I can watch broadcast telly and DVDs in bed. It works brilliantly. The picture quality is just fine on a 17 inch LCD and the stereo comes out of the diddy built in speakers either side of the screen. The only minor snag is possible interference if someone walks around on the landing, so that's easily avoided. I have only the one receiver but I believe the system allows you to add others fed from the one transmitter.
But in the living room the system uses high quality wired interconnects to projection TV and hi-fi with surround sound. For some movies it just has to be worth having a late night!
The wireless gizmo is the Philips SBC VL1200 Wireless TV Link. My local Comet has it in stock. Street price is about £75 (gets you 1 each Tx/Rx); additional receivers about £50 each. Oh, and take care if you have a wireless LAN - it can interfere at 2.4GHz.
Last point - the Philips unit also accepts infrared signals from your remote control(s) and transmits them back to the source device (DVD player, tuner) via neat little stick-on IR "eyes" you put on the front of the boxes near the sensor. I wouldn't be without that feature.
Hope this helps,
Roger