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I have built an "all house" video distribution system. All five bedrooms, Living room and shop have 2 RG6 coax runs to a backboard in the shop (properly amplified). Currently, I'm using a switch box at each wall mounted TV/VCR to select basic cable or living room switchbox. The living room switchbox enables switching of pay TV channels, sat and DVD to remote TVs. This works great, but all remote TVs must watch the same device at one time. I've learned that I could use an RF modulator for each device and transmit it on a different unused channel, eliminating the switchboxes. I've only found 2 manufacturers, Channel Plus and Channel Vision. They both cost about $100.00 per channel and seem to be comparable (I'd like to save some money).Does anyone know of other manufacturers?
Does anyone have a schematic to build one?
Any other suggestions?
Thats pretty much your options- using a commercial unit. Modulators are avaliable at Radio Shack, but, only output on channels 3 or 4. Otherwise using a commercial unit (agile modulator they are usually called)to get other channels. P.S.- do not allow your modulated signal to back feed to the cable company feed. They will get real upset about that!
Brian, or anyone....I have one of the Radio Shack RF Modulators (model 15-1244) to transmit my DVD to the other TVs mentioned in the main subject. It works great! It only transmits in mono but that's what the bedroom TVs are anyway. The problem is that it ONLY transmits on channels 3 & 4. I'm looking for a programmable one that will transmit on channels around 100 or so. I'll need to transmit 4 devices on different channels. I know that once I've found one I'll have to install a channel block (low pass filter) to avoid "backfeed" to the cable company. I've found some low pass filters for around $20.00. Do you know of any other brands or sources other than Channel vision or Channel plus? I like to comparison shop. I've only found smarthome.com as a source.
Try starkelectronics.com for starters.Price may not be to your likeing as most "agile modulators" are made for the cable tv industry and are "industrial quality" so the price reflects it.
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