Set-top box-less Time Warner Cable subscribers in parts of New York City will find more than 90 percent of the basic cable lineup missing from their QAM-equipped televisions as the cable company completes a transition away from analog cable television and begins encrypting almost all its digital channels.

The Federal Communications Commission changed the rules last year allowing large cable operators to begin encrypting basic cable, requiring customers to rent cable boxes or CableCARD units to keep watching.

Time Warner Cable began the all-digital, encrypted channel conversion earlier this year in Mount Vernon, Staten Island and Bergen County, N.J., and is now switching on encryption in the New York City region on a neighborhood-by-neighborhood basis.

The switch renders televisions useless for receiving cable channels without extra equipment supplied by Time Warner Cable. Encryption is deployed as an anti-theft measure, but it also inconveniences customers who have to rent equipment for each of their televisions. Encrypting basic channels also benefits Time Warner Cable by allowing service authorizations and disconnects to be handed from the office, reducing in-home appointments.

Customers will need a traditional set-top box, a Digital Transport Adapter (DTA), or a CableCARD to get the channels back. DTA boxes are being provided at no charge until 2015, after which they will cost $0.99 a month each.

Some customers also complain Time Warner is testing “copy protection” permissions, preventing some channels from being recorded. In Queens, one customer noted copy protection was active on C-SPAN, preventing recordings of the network. Some programmers may insist on copy protection technology being implemented as part of future cable carriage contracts. Most expect pay-per-view and on-demand events will be the first blocked from recording, potentially followed by premium movie channels.

At this time, Time Warner Cable says its encryption initiative is limited to the New York City area.