> On Wed, 10 Oct 2007 11:05:46 -0800, glen herrmannsfeldt
> <gah@ugcs.caltech.edu> wrote:
...
>> The box needs an ATSC tuner, and the logic to convert the
>> result to an NTSC analog signal. Most likely with both video
>> and RF outputs. The output of the ATSC tuner is the digital
>> signal, not suitable for an analog TV, so the box needs
>> both a tuner and converter.
>>
>
>
> Which is why the item I describe IS a converter!
>
> Mainly... because it HAS ONE IN IT!
You have a prick, therefore you are a prick? Maybe so.
Jerry
--
Engineering is the art of making what you want from things you can get.
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
Reply by ChairmanOfTheBored●October 12, 20072007-10-12
On Wed, 10 Oct 2007 11:05:46 -0800, glen herrmannsfeldt
<gah@ugcs.caltech.edu> wrote:
>Gary Tait wrote:
>(snip)
>
>> It depends on your perspective.
>
>> Such boxes are technically tuners that output the signle tuned channel.
>> They are not "convertors" in the sense they do not convert all the
>> digital channels to analog for an older TV to tune.
>
>I remember in the days of UHF getting more popular, and using
>a converter box that output on VHF channel 3. This can be done
>with the appropriate mixer and LO, without converting the input
>to baseband. It does involve tuned circuits, but does not
>convert all (70) UHF channels to be tuned on a (12 channel)
>VHF tuner.
>
>I believe there were/are block converters from cable channels
>to UHF which do convert all at once. Most cable boxes don't
>do that, though. Early (analog) ones did the down conversion
>similar to the UHF conversion described above. Most now likely
>go to baseband and then remodulate for those without video inputs.
>
>The distinction between 'tuner' and 'converter' is fuzzy.
>I don't believe that there is a convenient way to block convert
>the ATSC input to NTSC output. One could build a box with
>multiple tuners, decoders, and modulators but I doubt that
>would be for the consumer market.
>
>The box needs an ATSC tuner, and the logic to convert the
>result to an NTSC analog signal. Most likely with both video
>and RF outputs. The output of the ATSC tuner is the digital
>signal, not suitable for an analog TV, so the box needs
>both a tuner and converter.
>
Which is why the item I describe IS a converter!
Mainly... because it HAS ONE IN IT!
Reply by ChairmanOfTheBored●September 23, 20072007-09-23
On Sun, 23 Sep 2007 16:41:17 -0700, Joerg
<notthisjoergsch@removethispacbell.net> wrote:
>And then the moment of truth cometh. I am a bit concerned that the
>chosen system could waffle under really strong multipath conditions like
>where we live.
Digital transmission do NOT suffer, in ANY WAY, SHAPE, OR FORM, from
multipath distortions!
Reply by ChairmanOfTheBored●September 23, 20072007-09-23
On Sun, 23 Sep 2007 16:41:17 -0700, Joerg
<notthisjoergsch@removethispacbell.net> wrote:
>And then the moment of truth cometh. I am a bit concerned that the
>chosen system could waffle under really strong multipath conditions like
>where we live.
Digital transmission do NOT suffer, in ANY WAY, SHAPE, OR FORM, from
multipath distortions!