Re: ATSC modulators

[gordonb.uzqkq@xxxxxxxxxxx (Gordon Burditt)]

>Sounds interesting.  What is analog pass-through?

Analog pass-through is an old feature from VCRs.  TV signals coming
in on the ANTENNA coax are passed through to the RF OUT coax (which
is connected to the TV antenna input on old TVs not having a composite
or S-Video input).  The VCR can also send its own signal on channel
3 or 4 out the RF OUT coax, and which you got depends on the TV/VCR
toggle button on the remote and whether the VCR was ON.  On a VCR,
you could record one channel and watch a different one using the
TV tuner.

For converter boxes, TV signals coming in on the ANTENNA coax are
passed through to the RF OUT coax when the converter box is OFF
(I'm not sure whether any of them have the equivalent of the TV/VCR
button).  This lets you continue to tune low-power analog stations
which will NOT be going digital in Feb. 2009, or add-in signals
mixed with the antenna like a video game or the output of RF
modulators, without doing any cable swapping.