dave111 0 Posted August 20, 2011 Picture this case: a TV in one room, and DVR in another room. With the TV hook to the DVR via coax cable (the TV is not within line of sight to the DVR) Are there any DVRs, or ways to configure a DVR so that when you change the channel on the TV (ie channel 2, 3, 4 etc..) it changes the camera you are viewing? So each camera is broadcast to a unique channel... Share this post Link to post Share on other sites
rory 0 Posted August 20, 2011 It used to be called an RF Modulator, but now Digital cable has killed it. Ive heard rumours of Digital modulators but nobody can promise it will work. Otherwise you could just put it into the AV Input, or extend the VGA or HDMI from the DVR to the TV if it has one of those inputs. another idea is to run a mini PC with the CMS for the DVR on windows startup, then use an IR remote to send certain keys to the CMS to change views. Share this post Link to post Share on other sites
dave111 0 Posted August 20, 2011 Isn't an RF Modulator just used to convert AV to Coax and vice versa? I'm not sure how this relates to being able change the channel on the TV and have it view a different camera? Seeing as the TV is not within line of sight to the DVR, so cannot change the channel directly on the DVR. Basically i want to be able to press "channel 1" on the TV, and view "camera 1", press "channel 2" and view "camera 2" etc... And also have it split to multiple TV's if possible, so you could be viewing camera 1 on a TV in 1 room and camera 2 on a TV in another room. etc... Is it not possible to have each camera broadcast on a different frequency down the same coax cable? Share this post Link to post Share on other sites
rory 0 Posted August 20, 2011 It takes composite and converts it to TV signal ... they normally come in either the basic 3/4 channel or in batches of tv channels and you get filters to filter that channel so its a clear signal. So for example you can get a 4 channel one and set it for channels 72-74 and then put 4 cameras on that. But that wont work with digital cable. http://en.wikipedia.org/wiki/RF_modulator http://hometheater.about.com/od/hometheaterdoityourself/ig/Home-Theater-Connection-Photo-/RF-Modulator.htm Share this post Link to post Share on other sites
SDM Group 0 Posted August 20, 2011 You could do it through Home Automation software/hardware i.e. loop through a Crestron video switch and program Crestron remote, expensive though Share this post Link to post Share on other sites
bjherron 0 Posted September 6, 2011 I found this thread looking to see if there was something better than what I am planning. I have an 8 channel DVR but it has a BNC out. I'd like to turn on any TV in the house and look at the cameras. I looked around but couldn't find any DVRs that had an antenna output with cameras on seperate analog channels. Since I can't seem to find it, I ordered a Channel Vision E4200IR. My plan is to use the DVR output with the split screen as one of the analog channels. Then I will use Y splitters from the cameras to inject each one of them seperatly as their own analog channel. If this works well with the first E4200 I purchase and I can get 4 analog channels working, I will buy a second one and see if I can get 8 working. I don't know why this isn't a standard feature on all DVR's. It seems like people would want to use their home TV's located away from the DVR to view all camera channels. With this the user should be able to channel up and down with their regular TV remote to see different cameras. Brian Share this post Link to post Share on other sites
Soundy 1 Posted September 6, 2011 I don't know why this isn't a standard feature on all DVR's. It seems like people would want to use their home TV's located away from the DVR to view all camera channels. With this the user should be able to channel up and down with their regular TV remote to see different cameras. First reason is, it costs extra, and a lot of standalone DVR manufacturers have been going for "cheap" for years. People who would have no use for this feature (there are more than you think) wouldn't want to pay the extra cost for something they'll never use. Secondly, in order to put a different camera on a different channel, you'd need either multiple modulators, or one multi-channel modulator... both of which would cost SUBSTANTIALLY more. Third, in order to do that, you'd need available channels. Most cable companies leave ONE "blank" channel designated for security cameras... most of the others will have signal on them. Fourth, if you want to send the DVR signal to all the TVs in a multi-TV house, you have to insert it before the main splitter, where the cable comes in... and you can't just splice the wires together; you need a signal combiner of some sort. Most modulators include this function - cable in on one side, cable+A/V signal out the other side. Most of these modulators are intended to be mounted near the first splitter... not necessarily the most convenient place to put your DVR. Share this post Link to post Share on other sites
sidoffice 0 Posted September 12, 2011 or just simply use a wireless video transmitter and receiver.. and with your dvr remote control simply browse through your cameras... inexpensive.. Share this post Link to post Share on other sites
