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If there are any cuts, strips, bad crimps, or bad shielding on the line, TV channel 5 leaks into our CATV channel 5, and completely distorts the picture and the sound is usually messed up too. This happens a LOT with houses wired with RG59, because of the lack of good shielding. Also, if the conductor is exposed to the air at ANY point, that is an entry point for stray signal.
I apologize for the bad pictures, but these were taken with a digital camera. Whenever I get around to getting my TV Tuner hooked back up, I'll provide some much better shots. But for now:
Channel with ingress:
Same channel without ingress a few secs later:
Ingress, as it pertains to cable modem access
Two-way digital data signals are more susceptible than one-way signals to stresses in the condition of the HFC network. Degradation in video signal quality might not be noticed, but when two-way digital signals share the network with video signals, digital signals might be hampered. More information can be found here. (Thanks to JTRockville for providing this information)
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