the toss

Maybe the tiles needs to be waterproof , fireproof & each have a safety chain attached.

other way is off cut plastic conduit cut to tile size with long drywall screws I always have offcuts of PVC ducting lying around. I simply cut up the cover strip into about 3" lengths & screw into these on the back of the tiles. It helps to use course threaded screws

THE most important part of BNC terminating is ensuring you get the centre pin to "lock" in when you insert it in the outer body. Most people think that the crimping of the ferrule is what holds the whole thing together but they are only half right. This is the most common problem I come across & I refer to it as the Mathew Technique after the installer who spent 15 years of doing it wrong. You would wonder why he didn't bother to find out why most of his coaxes, complete with pin, would pull out of the BNC with just a little tug.

I wouldn't use lens's out of glasses unless you have two cameras spaced the same as your grandmothers ears. Flux capacitors will solve your wireless internet problems.

My mistake . but my comments still stand ( just not with regards to your problem ) As suggested I would be looking at your gain/agc settings & the dnr setting. to a great extent these work against each other. As you increase you gain you will also increase noise level & at the extreme the noise may be so great that the dnr has little effect. It looks to me that the camera is simply trying to operate beyond its capabilities. As suggested try adjusting the colour/B&W threshold & get it to go to b/w earlier.

95% coverage refers to the coverage of the shielding (braid) around the inner conductor. You would only get 100% if it was a solid copper shield (a bit like a copper pipe). There are many cables that have a very thin & light braiding that would only be at a guess 50%

You have just discovered the difference between cheap IR cameras & quality IR cameras. You can either live with it , upgrade the cameras or get some lighting in there

TV antenna cable is still 75^ and is most commonly RG59 for analogue or RG6 for digital. The RG58 is (as you say) 50^ and is most commonly used for radio transmitter antenna feed.

The small screens are just too hard to get a good focus adjustment on & can be near impossible to see if you are outside in the sun. At least that is the case with my eyes.

The axis are referring to the mechanical mount of the camera so the zoom in /out has nothing to do with it. You are correct with your understanding of 2-axis & these are usually all that is required for ceiling mount cameras. However if you mounted a dome camera on a vertical wall you would get up/down & left/right adjustment. If you wanted to adjust the camera view down AND to the left you would not be able to do it without turning the camera off the vertical line. The 3rd axis is a rotational axis of the camera to enable you to bring the picture back to a vertical display orientation.

Video baluns are BALanced to UNbalanced impedance matching transformers. They are used to match the 75^ characteristic impedance of video camera O/Ps to transmission lines of various impedances ( usually 120^ cat 5/6 ) If your cameras are already running on 75^ coax and you have video quality issues then using a balun will be of no help & will actually degrade the video further.

in that case biwave is what you need ...... we carrie a few and have used lots with no problem. 2 video / power / data and audio. everything comes with power supply just order 12 or 24v which ever supports your camera. and there not that expensive. I have used these on a number of occassions with good results. Cost $370 for the set in Aust. When compared to the cost of labour , cable & cherrypicker to run another cable it is the best solution.

3 axis covers vertical , horizontal & rotational adjustment. Maybe the fourth axis covers the time domain so it can be used in the Tardis or the D'lorean for time travel

It will depend on the design of the 12V power supply. If it is in fact just a single supply with multiple O/Ps then when you connect the +ve to -ve to series them you will actually be shorting the O/P

Although I live in a fairly temperate location where winter temperatures seldom get below 10*C. for the last week it has been downt to 4 *C during the day with a bitterly cold wind chill factor. It got me wondering how those people in the colder climates manage with their day to day installations. I know that you can "dress up" to suit the conditions but it seems to me that would be like trying to do brain surgery dressed in a ski suit. On the other hand during summer it can get to 60*C + inside a roof cavity but that is really no different to going to a sauna & as long as you keep the fluids up there is usually no problems. I really can't imagine what it would be like to be up ladders running cable in sub zero temperatures. I'm sure I would hate it.

There sure is. The good stuff is RG59u or RG59m & has a 0.9mm pure copper centre conductor with a 95% pure copper braiding. You may get acceptable results with the cheaper stuff & only you can determine if you are willing to take the chance.

Unless the cable enters through the base of the camera mounting & hence straight through a wall

I wouldn't be running it in 120V. There are lots of 12v strobes in different colours available for security systems , forklifts etc . Most PIRs use a form B relay contact ( normally closed) & will have to be changed to normally open with a relay. OR find a PIR with a form C contact which will have both normally open & normally closed contacts. These are usually on the better quality ones which you will need if it is going to be installed outdoors.

Yep - I know that very well living in FL. We don't need to deal with the cold weather, but it's 85F+ for most of the year. When working outside, wearing a light cap with a sunsheild (similar to a foreign legion hat) or wearing a wet towel over your head/under your cap, sunglasses, sunscreen and keeping well hydrated are important. 85*F is only 30*c. That is just a pleasant summers day here. It regularly gets to 38*c (100*F) & like you say, sun protection & lots of fluids will see you right

Not for the money that he would want to pay

It's not something I would do but if it is impervious to water & unaffected by UV there's no reason I can see not to do it. Normal cat5e cable is neither UV resistant nor waterproof.

Long distance IR is a myth , at least with the equiment available to you & I.

He needs to start with knowing what he's talking about

Why are those stripes only on your hand ? I'd go see a doctor.

Go for it. Generally weddings become more about showing off as to how much it cost when the money could be better spent when starting a life together. When I got married at 40 I didn't need to cut on costs but we opted for a more informal reception. Hired an ex-ferry that was set up for catering & spent 5 hours cruising on the local lake with 70 family & friends. Total cost including catering $4000. Disadvantages - limited hot food , limited alcohol. Advantages - set timeframe , limited alcohol It remains the "best wedding I,ve been to" among my friends.