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Wireless Transmitters

(March 2008)

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adderzigzag
I have a new digital TV in my conservatory, the TV was purchased primarily to be used with a HDMI input from a Playstation 3, which gives an awsome picture.

My problem is that the TV signal is derived from the analogue output from a Sky Box about 15m away. The picture isn't brilliant, as always, everyone you speak to is an expert on TVs but hoping the response here will be from people who know!

Firstly I don't want to move my Sky box, nor am I in a Freeview area so can't use another ariel signal.

I was wondering about a wirelss transmitter reciever combination. But as expected is the cheapest best? Some have SCART connectors some have AV connectors, anyone had experience of which is best, or will the wireless be no improvement, would be useful if it transmitted the Sky remote signal back to change . Don't want to spend a fortune, especially as I have lifted the carpet once to install the coax!!

Look forward to a response.
NG
noggin Founding member
All "video sender" devices are composite only - and may well interfere with - or be interfered with by - WiFi if you are using 11g or 11b (11a is 5GHz not 2.4GHz so a better bet)

It doesn't matter whether they have a SCART or Composite Phono inputs the quality is only ever going to be composite. It is a step-up from RF (i.e. aerial cable) quality as you get stereo audio - but that is about it.

There are solutions that will carry RGB video over Cat 5 cable - but they aren't as cheap as videosenders...
DA
David
noggin posted:
There are solutions that will carry RGB video over Cat 5 cable - but they aren't as cheap as videosenders...


There are? How would this work? Would it be sending the picture/sound as 'data' or would the Cat5 just be used in place of Scart/RF cable etc?
BA
Bail Moderator
How about this:
http://www.futureshop.co.uk/profigold-pgv7820-flat-cable-scart-lead-20m-p-445.html?osCsid=c04d0bd86b074141fe63610cd302858b

It's not cheap, and would require carpet lifting but it would ensure a better connection than using RF, and it looks to be reasonably well shielded.
DA
David
Bail posted:
carpet lifting


You know when some things just sound funny?

"You dirty little carpet lifter!"

Just me?
JR
jrothwell97
noggin posted:
All "video sender" devices are composite only - and may well interfere with - or be interfered with by - WiFi if you are using 11g or 11b (11a is 5GHz not 2.4GHz so a better bet)


I believe the newer 802.11n devices also operate on 2.4gHz, so they may also pose an interference risk.
NG
noggin Founding member
jrothwell97 posted:
noggin posted:
All "video sender" devices are composite only - and may well interfere with - or be interfered with by - WiFi if you are using 11g or 11b (11a is 5GHz not 2.4GHz so a better bet)


I believe the newer 802.11n devices also operate on 2.4gHz, so they may also pose an interference risk.


Yep - 11n is a development of 11g rather than 11a AIUI.
NG
noggin Founding member
davidlees posted:
noggin posted:
There are solutions that will carry RGB video over Cat 5 cable - but they aren't as cheap as videosenders...


There are? How would this work? Would it be sending the picture/sound as 'data' or would the Cat5 just be used in place of Scart/RF cable etc?


Straight analogue (with some equalisation I guess) - nothing to do with digits - just uses Cat 5 cable cos it is cheap and readily available and has the right number of conductors.
DE
deejay
noggin posted:
davidlees posted:
noggin posted:
There are solutions that will carry RGB video over Cat 5 cable - but they aren't as cheap as videosenders...


There are? How would this work? Would it be sending the picture/sound as 'data' or would the Cat5 just be used in place of Scart/RF cable etc?


Straight analogue (with some equalisation I guess) - nothing to do with digits - just uses Cat 5 cable cos it is cheap and readily available and has the right number of conductors.


One of the first companies to offer video via CAT5 was Lektropacks, their current range is here. They now offer HDMI over CAT5 I see, no idea how good this might be AIUI HDMI can be rather pernickety...

I've used a couple of digital videosender devices in my time and frankly found them to be rubbish: dodgy pictures, prone to interference from passing people etc., rather like watching a portable telly in the 80s with one of those hoop aerials...

I'd recommend a wired solution of some description. A 15m SCART is probably not going to be the neatest installation, but CAT5 might be worth looking into...
GS
Gavin Scott Founding member
I have recently supplied equipment for a client with the same requirements.

http://www.keene.co.uk/pages/cat/jpgs/TP551.jpg

http://www.keene.co.uk/electronic/kramer/kramer-tp551-hdmi-over-2-x-cat5-transmitter/TP551.html

There are a range of well priced solutions in the Keene catalogue to look at, but in my view you can't beat a wired installation. Wireless products just aren't consistent enough.
GS
Gavin Scott Founding member
I may have slightly misunderstood your requirement (on re-reading), however there are a plethora of products in the link above that should fit the bill.
DO
dosxuk
Its always worth remembering the most expensive wireless kit is only as good as the cheapest cable.

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