Trying to recreate analog broadcasting.
I see a lot about agile modulators, and I understand that you can broadcast one source over a local area for wireless pickup. It sounds like each modulator can only send one source on one channel, though, and changing the source has to be done on whatever is sending it to the modulator.. I'd like to broadcast multiple channels so I can tune from my television itself, rather than having to select the pickup from the modulator source. Is there a way to pickup, modulate, and broadcast a wide selection of channels? Possibly into the uhf range?
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you would need a modulator for each source, each on a different channel- and you may need to avoid channels that are in use in your area, and possibly adjacent channels to avoid interference.
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There are weak agile modulators capable of 4 channels simultaneously....That is the most I've heard of one box being capable of. Most areas don't have many VHF channels, but the UHF channels are usually congested from 13 up to 55 (you need a DTV box, like Zenith models, that shows the REAL carrier channel of the station to check your area). TVs prior to '64 only had UHF if that optional feature was ordered so if you buy earlier sets UHF will not be convenient.
Honestly how many channels do you regularly watch? I can maybe come up with 4-5 max. I prefer to have multiple modulators so my sets can run 2-4 shows at once, but my feed to them is a set of VCRs/DVRs/DVD-Rs that tune my cable feed.....That way I can use their remotes for tuning. If you have a local cable provider that still offers analog cable (such as TWC's Milwaukee branch) that may be a solution (though the days of that are numbered). Cable channels 2-13 correspond directly with VHF channels, and SOME upper cable channels are in the UHF band......Most of the cable stations on such channels here are ones I have no interest in so I use modern stuff to convert what I do watch to a better channel. |
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If you want a cheap easy source get a thrift shop VCR....You will have to wire it to your set's antenna terminals though. |
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I think a ChannelPlus 5445 Four-Channel Video Modulator may do what you want.
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Also it looks like the 5445 only broadcasts one at a time. I'd like to broadcast all channels simultaneously. |
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From a product description on Amazon.. "The Model 5445 Four-Channel Video Modulator converts four video and stereo audio inputs to four programmable TV channels (stereo audio is converted to monaural audio)" |
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I'd have to find a users manual on that modulator. The controls look like it doesn't broadcast every channel simultaneously. |
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OK, yeah, that looks like it can save 4 channel settings, but only broadcasts one at a time. Also it doesn't broadcast in the VHF range.
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I remember reading that Blonder Tongues can do VHF. That's an expensive prospect, though.
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You said you are a college dorm dweller. One thing to keep in mind is that you should limit your transmission power in a multi-resident structure to not traveling farther than it is needed....If it interferes with others use of the RF band there and the building manager or FCC is contacted, then you may come home to find the transmitter removed and or a fine placed on you.
Also both the transmitter and set will need to have antennas, and RF through the air may reflect off things in the room (including you) and mess up reception. The only reason I have an RF TX set up is that my 50+ sets are in a variety of rooms (some of which don't have convenient cable access), and the logistics of running cabling to all of them or moving signal source to sets as needed is more expensive and more of a pain respectively. |
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