Would a Col-R-Tel adapter work with todays TV sets?
ANSWER. With analog TV, probably not. With digital TV, definitely not. The rest of this answer refers to analog TV. Today, the receiver IF bandwidth probably isn’t broad enough to drive Col-R-Tel. Some connections that appear on the schematics would be inside of ICs today. Also, many TVs use neckboards instead of plugs with leads. Neckboards make connections difficult. Cliff Benham also warns that many, if not most TVs use a hot chassis. Adding circuitry to them without using an isolation transformer is hazardous.