What kind of domestic equipment allows for broadcasting multiple analog channels over coaxial cable?

by V1SoR

I wasn't sure where else to post this so gonna ask here.

The title says it all. Looking for reasonably sized, reasonably priced domestic-case use equipment, something of a feature-rich DAC (digital-to-analog converter). Basically to emulate an analog TV provider, i.e. broadcast multiple channels on multiple frequencies through a single coax cable (preferrably PAL/NTSC).

Ideally it has to somehow connect to a PC (and the connection probably needs to go through a relatively fast port, like PCI-E or USB3.0), obtain all the necessary content there, convert it from digital to analog, and finally send it to the analog output for direct TV consumption.

Is there anything out there? No illegal activity is planned with this, strictly for personal use. Thanks!

satanic-surfer

what are you trying to accomplish?

Mainly if you are trying to use only domestic equipment your project would be too difficult to implement but not impossible, albeit you can use some second hand CATV / CCTV equipment.

On the other hand the type of device that you are asking is only professional grade, like this one:

http://www.lumantek.com/index/product_intro/54

Which is employed on some odd testing or even, Samsung employs this gadget inside a device called REACH server in order to inject channels (they seem to add up to 4 channels) and they can control a special kind of TV

https://displaysolutions.samsung.com/pdf/brochure/513/NEW_GUIDE_Samsung_LYNK_REACH_web.pdf

Also have you think of this kind of device?

https://www.amazon.com/4-Input-Composite-Video-Audio-Modulator/dp/B07BS76HS3

This may be useful on your purposes but the video signal may be limited to analogue NTSC...

tufkab

One device that comes to mind is the VECOAX minimod2. I happened to see this once and thought it was pretty cool. You feed it and standard hdmi signal and it will encode it with QAM and send it out over coax. Then you scan for digital channels on your TV and you can transmit 1080p over coax to multiple TVs. You can add multiple devices for more channels. They are quite expensive though. About $500 per module.

You may want to consider googling how what type of hardware hotels use for sending channels to the rooms over coax.

soulnull8

You'll need a few things.. an ntsc or pal modulator (depending on your region) as well as a card/converter (this can be usb based) that converts digital video signals to analog. They also make QAM encoders, which might be easier since you can skip the analog process, it's digital over coaxial while still being compatible with any tv made since the late 2000s. you can find a lot more by googling the terms above which should get you on the right path. If you have any questions, I'll try to help get you on the right path