Frage von Rambello:
Hello,
I now feed 5 images of 5 analog surveillance cameras over 5 RF modulators and turnout in the UHF range in my house-FS analog antenna network.
It can now be of any television connected from the 5 surveillance images as normal FS Programs with the remote control fast dial.
But I would slow way of the analog TV to DVB-T TV.
How can the 5 analog-camera images RF moderate as elegant for
future DVB-T receiver or visible source here?.
Affordable simple DVB-T RF modulators, I have never yet found ...
Antwort von steveb:
What is in your eyes a DVB-T Television?
Antwort von mdb:
Affordable simple DVB-T RF modulators, I have never yet found ... Why should someone synonymous finished? To make it really cheap will require large quantities are produced. Your application, however, is rather unusual.
Antwort von wolferl69:
A DVB-T Television "can be almost 30 free digital TV channels with normal antennas, as usual, receive.
Already over 50% of the area of Germany are now in order supplies ... (We constantly expand next).
It takes but a built-in DVB-T digital tuner.
A Altfernseher can use synonymous, but you need an extra ballast-to-digital receiver (with remote control extra ...), everything for about 50 ¬.
Why so expensive nor the cable fees charged?
There is in my opinion, many households who have one-or-how I operate several surveillance cameras. This is increasingly
"in fashion".
And more and more people will be forced to a modern TV set, equipped for reception DVB_T buy.
Analog television has been so off for ever.
And such surveillance images can be quickly and easily on small, cheap DVB-T RF modulator (s) "source here" and then ( "everywhere", with each s.Hausnetz Television ...) as the other normal FS-Channel Select .
And maybe even with a second DVB-T tuner in parallel as "Einblendbild" view.
Sowas want cheap and practical but definitely a lot!
Or so I'm just a strange customer?
Antwort von mdb:
There is in my opinion, many households who have one-or-how I operate several surveillance cameras. Do you? I tend not to. I have in my circle have already been 10 satellite dish installed, but still no camera.
Certainly, the surveillance system manufacturer sometime react when there is no Television with analog RF reception there, but it will probably still take. In addition, I have the impression that the trend to more wireless cameras, about even less wiring to have. If then the DVB-T could send would be practically already ...[/ quote]
Antwort von Andreas_Kiel:
Why so expensive nor the cable fees charged?
Hi,
because of the
shitty quality of DVB-T, for example.
We have cable and because I am not with the tens of meters through the blower housing redistribute could / wanted to, I have two rooms for DVB-T decoder purchased.
That video at once VPS no longer be able to use: ok, I knew before. For each device two decoder or a double three times as expensive decoder: well, you can not synonymous to cope with (all recorder hang with me anyway s.Kabel).
A recorder can via DVB-T only work if the decoder is on the right channel. Several consignments of different channels to each other? Does not.
Picture quality? Boah, digital, geil. Von wegen! We sit here than 2 n.vom Kieler Funkturm away, the antennas have direct line of sight to the radio tower. Result: Still no plane just fine details and with little movement are satisfactory (ie, better than analog antenna) over, otherwise a rough block Gegriesel and artifacts, that it is a sow graust, several times worse than VHS with Super Long Play record.
Left and right is plenty (!) Of Picture cropped and no, it is not s.Television: the same device flight to the cable gestöpselt shows a complete picture of. Partial - sender-dependent - is so bad that the channel logos may be cut off.
If this is the future of digital TV should be ... then I leave my cat seem drauf * s, which it surely can not really be!
DVB-T is the current state, perhaps even what to campsite and apartments, but in their own home for me is just a cable connection in question. I am annoyed at the two secondary devices green and black and accept the time being just because we are on these devices may be times news or watch it for dispute avoidance because of the evening program.
BG
Andreas
Antwort von Pianist:
But I would slow way of the analog TV to DVB-T TV. That is not a good idea, you were just so very aptly explained. DVB-T is a pure disaster, stayed in cable. Incidentally, you will not at any time something like a "DVB-T modulator" get, because what would that be? A small terrestrial digital channels? That makes the Federal Network Agency will not be with. But even if you get on DVB-T should change: You do not need the wires from the wall tear, but can continue to use your modulator.
But mainly what I wanted to write your surveillance cameras, in my view we only use surveillance cameras as if they are part of a sophisticated security concept, because they're not able to prevent burglary, but the discovery of the offender is still next anticipated. That works only if the surveillance video of a complete exterior surveillance (from opening contacts and alarm spiders in glass) is upstream and thereafter to safety with a high mechanical resistance value waiting time, ie suitably equipped Windows and Doors.
An early discovery is only guaranteed if there is an analysis and an automatic activation of a Wachzentrale there. Something like it is now very economically. With an automatic analysis only works well when the night synonymous Picture is very good. So the best cameras and IR-LED headlights, and they are not quite cheap. True or not at all.
Matthias
Antwort von antje:
Thanks for the replies, it was for a time on vacation ...
I now have a small 17 "DVBT / Analog LCD of just 5.5 n.Luftlinie TV tower 200m high with 25KW/50KW DVB-T transmitters removed, however s.Waldrand.
Had with the device in the 3rd Kaufhof Floor (which is synonymous in the city so far away) with the small rod good DCB-T VHF + UHF reception, all 23 Programs.
Home to only the 4 DVB-T VHF Programs. In the garden synonymous only.
With the small (15cm) rod supplied active antenna (power from the antenna socket) are synonymous s.manchen bodies all 23 DVB-T - Programs in the kitchen quite well.
Have him but then again s.meine existing antenna cable jack in the analog mode (synonymous because of the 5 house-camera images) is connected.
I'm actually the reception performance of DVB-T disappointment. Had in my situation much better reception awaits. I would have s.Dachboden big VHF / UHF - Combination antenna (maybe with amplifier) mounted. to my whole house network "(7 rooms with cans) times with DVB-T products.
My 5 cameras are more of a hobby for fun, no serious intrusion prevention. Woman looks like so synonymous fast times on the road, what is going on when a car comes, etc.
Have sensitive sw Camera 0.003 Lux in the garden, which is synonymous throughout the night passable. Where else synonymous IR Lighting.
Waiting times from now. Wanted to halt the long term of (expensive) cable connection away ...
Antwort von dk4dy:
You are all right - except for Andrew ...
We radio amateurs knit us just DVB-T Converter because our frequencies above 880 MHz with commercial DVB-T receivers are no longer reach.
And we have already logically synonymous DVB-T modulators, one needs to send. - But until the price available to the general public will still take a couple of years.
The quality of DVB-T is dramatically better than the analog television synonymous and clearly better than digital cable TV.
A quality reduction, such as Andreas describes is technically not possible. Presumably Andreas has far-reaching EMI cable TV with DVB-T confused.
On this occasion it should be noted that in many cases quite sufficient if only one cable in the house paid for - and the other with the right of the general reception, the radiation received permission ...
Antwort von robbie:
A quality reduction, such as Andreas describes is technically not possible. So Mr radio amateurs ... DVB-T is an mpeg2 stream. A digital data stream with a compression and the resulting data. A reduction in quality is in DVB-T very well possible, as in DVB-S. THEORETICAL DVB is better than analog. And if not 4 or more channels, the bandwidth ONE! analog channel share. (at a frequency now, mind you) ...
From the 8mbit/sec that a broadcast television picture that much more beautiful than to be analogous, then suddenly, on average, only 2-3Mbit, for each channel are dynamically allocated. Ergo: The Picture, especially at very moving content (ski ,...) SCHLECHTER.
Because the compression is not playing more. The fact that the pure signal that arrives, is better than analogue in this case is no preference.
And also there are more digital streams only one area where I had picture, a little, to where it s.and with extreme artifacts there, and the area where I have no picture. This wonderful in between, as in analog days, where I have a picture, that halt grieselte something that no longer exists ...
