So it started maybe this morning a faint noise coming through both of my main speakers. I thought it was the voices again until I realized it was an FM radio station. After scanning the spectrum I found the station matches 107.1 FM here in Cincinnati. It is so clear I could hear the song playing, the pitch and tone of the singers, and could almost make out what the DJ was saying by putting my ear next to the tweeter. So, I broke out the O-Scope and started disconnecting things to find what piece of equipment or cable was introducing the RF noise.
Well, I am down to a RB-1080 with nothing connected to it except speakers and I still have the noise. I've tried changing the source of power from directly to the wall, though a conditioner, though a couple of conditioners. I've even switched out power cables in case that was the problem, but not luck. After doing a bit of investigation the screwed up thing is it isn't just the RB-1080. I recently purchased a Yamaha RX-V665 for HDMI decoding and the damn radio station is coming though the center channel too which is driven by the amp in the RX-V665. It is also found on the outputs of my Moon P3 preamp.
I'm at a loss here. I've even tried to make a grounded shield out of aluminum foil but I can't get the interference to go away. Oddly enough you can hear the station when you tune to 106.3 and 107.9 MHz on a receiver as well. I don't have my spectrum analyzer anymore so I can't view the spike to see if its extremely dirty, but I have a serious hunch that it is. The signal has to be rather strong to be picked up in my amp, pre-amp, and receiver!
Anyway does anyone have any suggestions or words of wisdom?
Well, I am down to a RB-1080 with nothing connected to it except speakers and I still have the noise. I've tried changing the source of power from directly to the wall, though a conditioner, though a couple of conditioners. I've even switched out power cables in case that was the problem, but not luck. After doing a bit of investigation the screwed up thing is it isn't just the RB-1080. I recently purchased a Yamaha RX-V665 for HDMI decoding and the damn radio station is coming though the center channel too which is driven by the amp in the RX-V665. It is also found on the outputs of my Moon P3 preamp.
I'm at a loss here. I've even tried to make a grounded shield out of aluminum foil but I can't get the interference to go away. Oddly enough you can hear the station when you tune to 106.3 and 107.9 MHz on a receiver as well. I don't have my spectrum analyzer anymore so I can't view the spike to see if its extremely dirty, but I have a serious hunch that it is. The signal has to be rather strong to be picked up in my amp, pre-amp, and receiver!
Anyway does anyone have any suggestions or words of wisdom?
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