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Cable TV Hookup Diagrams

There are many ways to connect Cable Converter boxes, TVs, VCR and DVD recorders depending on what you want to accomplish and what resources you have available.

Cable TV Hookup 
for both VCR & DVD Recorder, RF Modulator


This hookup diagram shows a VCR and a DVD Recorder connected to an older TV with only a RF input. This setup allows the recording of a cable TV channel tuned on the receiver box.

A/B switchbox



 Features:

    1. Allows recording of any channel tuned to and authorized for the receiver box.

    2. VCR is set on channel 3 (or 4) to pickup the cable box output.

    3. VCR playback is thru RF modulator to TV which is set to channel 3 (or 4).

    · 

Connection Notes:

To view cable TV channels:

    1. Select channels on the cable box.

    2. Set your DVD Recorder to LINE input to record cable channels.

To copy from VCR to DVD recorder:

    1. Connect RCA cables from VCR RCA outputs to DVD recorder RCA inputs.

    2. Play VCR and record DVD recorder from LINE input.

 

More information on PIP picture-in-picture


For an older TV without Audio/Video inputs, use an RF Modulator or an Audio/Video Switchbox.

TV TUNERS

Channels 2 to 13
Channels 14 to 69
VHF
UHF
Analog Video - Amplitude Modulation
Audio - Frequency Modulation
Betamax VCR 1977
TV set 1979
NTSC, PAL, SECAM
All the above plus channels up to 125 VHF
UHF
Analog Cable Ready - coaxial VCRs and TV sets 1980s, 1990s Cable TV
Channels 2 to 13
Channels 14 to 69
VHF
UHF
Digital compressed A/V stream - subchannels some DVD recorders, Digital TVs 2007 Digital TV
ATSC, DVB
broadcast
Physical channels
Logical channels
VHF
UHF
Digital 64-QAM, 256-QAM compressed A/V stream some DVD recorders, Digital TVs 2007-2011 Digital Cable


• With digital TV, the concept of a channel becomes more complex in that a physical 6 MHz channel can contain multiple logical channels. Logical channels can go up to 1000 and beyond depending on many factors. Todays digital cable channels generally start at 100 or 200 and above but these are logical channels and do not correspond to the actual frequencies.

• Cable TV providers can send digital signals unencrypted or encrypted. The QAM tuner can receive only unencrypted signals. For encrypted signals, a proprietary decoder box is required. Most TVs made before 2006 do not include a QAM tuner, and only have an analog cable tuner which cannot tune beyond channel 125.

• TVs and recorders generally do not have tuners for satellite TV. A proprietary decoder/receiver box is required. Satellite TV uses higher frequencies (GHz), different modulation and encryption than broadcast or cable TV.



With the above diagram, you can view or record cable TV channels while viewing another at the same time. The only restriction is you cannot record or view two digital channels at the same time. The splitter allows any analog channels to VCR one where its internal analog tuner is used while the other splitter output is going to the cable box where any digital channel is decoded and sent out on VHF channel 3 to VCR two. Set the VCR to channel 3 to record. The A/B switch allows swapping to one program or the other, playing VCR while recording another show or record while viewing a second program.


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