I'm a firefighter in Burlington Vermont. We have comcast for cable. What I would like to do is inject a channel for using a: https://www.provideoinstruments.com/VECOAX-MINIMOD-2-HDMI-RF-Modulator-for-HDMI-to-Coax-Video-Distribution-Over-Coax-to-Unlimited-TVs-as-HDTV-Channel_p_365.html
The channel would be used in station only for showing incident location, information and daily activities. What I need is a unused channel along with a frequency to assign it to. Can this be done? Thanks
