I'm looking for an explanation here and I suppose this could be considered a "video sniffing" question (or perhaps "warspying"). Warning, this is very long. Please suffer through my long semi-technical explanation if you think you might have an answer as to how I received an unauthorized signal over a fiber optic cable system. If you want to skip to the questions just go directly to the end of this first post. I have FiOS cable TV, which is a system that sends the signal over fiber optic cable up to the premises, where it's inserted into the ONT (Optical Network Terminal) which converts it to a signal transmitted over regular CATV coax cable that you then use in your receiver. (and also fiber optic to telephone and broadband internet on separate frequencies) Before the switch to digital you could get the local analog channels on your TV simply by plugging the cable into it and scanning it for regular cable channels however the subscription content was always digital and had to go through Verizon's set top box (STB). Since the switch there are no more analog channels and everything is digital. We have a periodic test of the emergency broadcast system and the way this works on this cable system is during the test they somehow take over your STB in a test mode and you cannot change the channels at all and the display on the STB reads "test" when the testing is over after a few seconds everything turns to normal and works as it always does.... similar to the over the air testing except that the cable system puts the STB into test mode and you get the test message no matter what channels you're watching because of the override feature of the test. Recently this happened but after the test was over, before the STB could reset to normal operation, I received about 5 or 10 seconds of what was obviously some type of security camera video. The resolution was very, very good but either the color was washed out from dim lighting or it was black and white... however the picture was very good and crisp. I've been curious as to how this could have happened as I don't see how it could have been someone's wireless camera as I receive my signal via fiber optic line which is converted to a shielded coax, which should prevent reception of a wireless signal. The only thing I can think of is that somehow someone must have an analog signal that was transmitted through the fiber optic line but I would think that wouldn't be possible either, unless the ONT will convert the signal going both ways (transmit as well as receive) which is possible in that the telephone and internet as well as some of the interactive TV functions are both upload and download so I suppose it's not out of the question. The other issue here is that signals over our systems are transmitted in a way that the STB decodes them and around a thousand channels are broadcast over about 50 cable channels and the STB decodes this information and puts it on the appropriate channel. I read some technical info that says that the actual channel it's on can vary and the STB decodes the signal and puts it on the channel you're watching, which sounds reasonable as we also get dozens of options "on demand" so it must be similar. This also evidently means that the channel I was watching (or tuned to) at the time is probably irrelevant and this is reinforced by the fact that when it happened there was no regular signal over the system (right after the test mode was over) although it's also possible it was a digital signal. My questions are: What type of signal was this likely to be (analog or digital) what was the probable distance (range) and what channel or frequency was it on? If I wanted to receive it again, how would I do that? If this was someone's security camera as it appeared to be is it possible that there are more signals to be received? Is it possible that somehow the upstream capability of the ONT has increased the range of the signal to a greater range than normal or would it be more likely that it originated withing normal ranges of a security camera... and what is the usual range of such a camera transmitting over coax, perhaps less than 500 feet or so? If I wanted to use my internal cable system in my home for a security camera system, would it also transmit down the cable so someone else could receive it? ... and if so, what would be the range? Also, does it seem likely that I could be able to transmit a video signal, or even a program (such as an A-V signal) to have my own "channel" and if I did so, would simply intermittently/randomly transmitting it be enough to avoid/prevent detection from the cable company ans in the case that I transmitted an analog signal would it be possible that they would not even care that it was occurring since it's a digital cable system? I'm sure that if I could figure out what channel it was on and whether it was analog or digital I could probably find out the rest of what I want to know. It doesn't seem to be on any of the over the air or analog TV channels though and I don't have a digital receiver other than my STB, which is also as DVR (like a Tivo) I would also be perfectly happy to find manuals that might answer most of my questions and if I had some titles to begin with I could probably find them and research much or what I want to know on my own. It does seem that most of the info I find in search engines as far as commercial sites offering cameras for sale it seems that most of these types of security cameras are wireless but it seems likely that this signal was over coax as that's how I received it and it was likely to be an individual rather than a business or a corporation. Any suggestions, thoughts, directions to information?