Still slot of snow on the pic and hardly see the picture , no other aerial connected
Just sky through same booster, why does one of my tv's able to connect to channel 1 from rf mod but the rest is from ch21?
john : A snowy picture on an analogue TV, or at least a Freeview TV set on analogue rather than DVB, is always a sign of a weak signal, are you sure that the jumper lead connecting the DVR to the TV isn't faulty?.
On the subject of connections, what do you mean by "Sky via a booster"?, maybe you could clarify as to what method you are using to connect the RF outputs from both the Sky box and CCTV camera into the TV? or alternatively, is the Sky box coupled into the TV via either a scart or HDMI lead, and the RF output from the CCTV camera is being fed directly into the TV's aerial socket?
The latter method giving the choice of viewing Sky on the TV by using the "input select" button on the TV's remote control, whereas the CCTV camera can be viewed by setting the TV on analogue, then tuning same to pick up the RF output from the CCTV camera, remembering to store the channel its received on.
If though you are using the RF outputs from both the Sky box and CCTV camera, make sure they are not set on the same channel, as one will interfere with the other if both switched on at the same time.
Maybe you could indicate the model of CCTV camera in question.
Both the sky and cctv are into a distribution amp and go around the house to different rooms, I can get sky with a good picture on channel 68 but the cctv isn't. It's a securicam dvr with output put through a rf modulator would another amp at the tv make the pic any better. The picture is good on channel 1 but can only tune into it on the small flat screen in the kitchen, all the others start at ch 21.
john: The channel 1 you refer to has to represent an actual frequency, the question being, exactly what the frequency is? as the modulator is the reason for your problem. To help further clarify the situation, maybe you could indicate the brand model of the TV used in the kitchen, plus also the brand / model number of the modulator being used, these required in order to check the specs of both devices.
By the way, introducing an additional amplifier into the system is liable to make the situation worse.