Help!! Low level hum from FM cable sgnl

Had this problem as well... Monster 1200 (nor any other filter device) will remove this completely. One thing to do is to make the grounds common (keep in mind NEC & local ordinances)(I disagree with the previous post that this is the easiest solution in all cases). The other thing to do is to take $50 to your local high end AV dealer and get an isolation transformer for your cable. This device will pysically disconnect the ground from the cable respective to your tuner. I took the latter approach with wonderful results. Write me if you need help finding this device.

I agree with the previous posts about less costly solutions than $50 (Sonance RFGI1)... There are versions as cheap as $8, but there could also be trade-offs with the signal quality. I got tired of trying a box for $8, another for $15, and then I did an audition of this one and it COMPLETELY fixed my problems (I had really loud HUMMMMMMM). I run a 65" HDTV capable TV, and even a minor problem with a cable, connection or signal will drive this thing nuts, The Sonance RFGI1 is a high end component, which also removed hum bars and some other rudeness that the CATV company provides me. You can experiment with all of the above suggestions, and they may work -- If you have more money than patience, or equipment that is finicky of its RF input, try the Sonance. I forgot to mention in my previous post, the monster 1200 and other devices like it have to tie the cable ground to the wall ground to comply with UL device manufacturing rules (all exposed metal must be ground potential). Good luck!!

Check out the sonance website for details. If you search altavista for RFGI1 it will only find sonance. Otherwise call your local AV dealers. You may not need the sonance quality for a tuner... My HDTV is extremely picky of cables, and anything in the signal path, hence why I ended up with sonance.