Such is not the case as the Moca standards are throughly tested and certified including passing FCC licensing requirements. The only possible interference could be if two nearby homes both had Moca implented over their Ota antennas but even then, the dual antennas would have to be touching each other for any possible RF interference to occur. The type of power transmission over a copper medium is not the same as a radiating antenna source, for interference to occur, there would need to be some type of unlicensed rouge megawatt power booster as the interference would occur due to the highly magnified signal leaking into nearby frequencies other than what is assigned to Moca. The FCC make very demanding certifications for anything used in the United States residential area, go to the Fcc website with the Fcc number of any Moca adapter including any Tivo dvr that has builtin Moca and you will find pages beyond pages of the products testing results were the certifying testing company puts the product though every documented configuration including other tests to certify that the power, modulation and frequency of a communication device will not interfere with other unintended devices. Think of what happens when you pull the coax cable out of a Tivo, be cable, digital cable or OTA, usually the signal drops as soon as the center wire looses the smallest amount of contact and doesn't work at all with the cable laying next to the Tivo unattached as there is hardly none if any radiating RF signal, a direct copper conducting contact must be made to allow the signal to be processed regardless of the frequency. If it makes you feel better you can install a filter if makes you feel good but unless your antenna coax runs outside your residence such as an apartment were someone unauthorized might be able to physically connection to and tap into it, there is no need for a poe filter with a Ota antenna setup while using Moca BUT the real issue would be why you connect to a MOCA adapter to an antenna unless you had some type of large external antenna servicing several receivers as typically it's a point to point connection from the antenna to the receiver.