seven_segment
Member level 2
r f change over switch
Hi, hopefully this is the right section for this post! Anyway...
I have linked together all the VCR's in my house (along with the cable box) to allow them to be viewed on any TV in any room. However, the house is fairly big and the signal goes through at least 80m of coax, possibly more, before getting to the main distribution amplifier which splits to all the TV's. Currently the cabling is something like this:
I do realise that having this many boosters in the system is asking for trouble on an analogue system, however I get a very poor signal without them as you would expect. Trouble is, although I get an acceptable picture with my current setup, it can be prone to inteference and the signal strength can change quite a lot throughout the week. I guess this might be due to variance in cable characteristics due to the changes in temperature and humidity.
Rather than wiring everything in a loop with the output of one VCR into the next, do you think the following setup would improve the picture quality?
This setup would mean the signal has to go through a much shorter cable run, as it doesn't need to run through each VCR in turn. Instead, the signal from the antenna is split and fed to each VCR, and then all the signals are cobined again before the final distribution amp to the TV's.
Only possible problem is that the leads to/from each VCR will be different lengths, so the signal is going to take longer to propogate down one route than another. Is it possible that this would cause ghosting and interference, or would the delay be minimal and have little/no effect?
The final idea I've had is to simply recable the whole lot, using lower loss coax with better screening. This wouldn't be too hard, but could be costly in both time and money, so I don't want to do it unless it will offer a significant improvement. Currently I'm just using standard 75 Ohm coax downlead.
Any and all advice is much appreciated!
Hi, hopefully this is the right section for this post! Anyway...
I have linked together all the VCR's in my house (along with the cable box) to allow them to be viewed on any TV in any room. However, the house is fairly big and the signal goes through at least 80m of coax, possibly more, before getting to the main distribution amplifier which splits to all the TV's. Currently the cabling is something like this:
Code:
Antenna > Booster > VCR 1 + Booster > VCR 2 + Main distribution amp
^ ^
CATV VCR 3
Note: CATV and VCR3 signals are injected through splitters
Rather than wiring everything in a loop with the output of one VCR into the next, do you think the following setup would improve the picture quality?
Code:
+-----Antenna----+
| | |
VCR 1 VCR 2 VCR3 CATV
| | | |
+---Main distribution amp--+
Only possible problem is that the leads to/from each VCR will be different lengths, so the signal is going to take longer to propogate down one route than another. Is it possible that this would cause ghosting and interference, or would the delay be minimal and have little/no effect?
The final idea I've had is to simply recable the whole lot, using lower loss coax with better screening. This wouldn't be too hard, but could be costly in both time and money, so I don't want to do it unless it will offer a significant improvement. Currently I'm just using standard 75 Ohm coax downlead.
Any and all advice is much appreciated!