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james1969

Responses from james1969

high frequency intermittent noise
I have asked if stopping resistors are used, waiting to hear back. 
high frequency intermittent noise
No, my phone has no affect.  I wonder if it's because I'm on Verizon, and the offending tower may be a GSM tower? 
high frequency intermittent noise
Something I’ve been looking at to correlate the noise to the cell tower:https://www.amazon.com/gp/product/B007L09DLY/ref=s9u_simh_gw_i2?ie=UTF8&fpl=fresh&pd_rd_i=B007L09DLY&pd_rd_r=68bbfce7-caf8-11e7-8cdf-51a46fae6b0a&pd_rd_w=4szrl... 
high frequency intermittent noise
Thank you EVERYONE who has participated on this thread for that matter.  I really do appreciate your ideas and posts. 
high frequency intermittent noise
@jea48   LOL, Yes, I know where my cell phone is.  I tried turning it off, no effect.My system does sit against the outside wall, which is at the same level as the cell phone tower.  I do not directly face the tower, but the tower is in direct lin... 
Can good soundstage be had in small room
Sound similar to me... 
high frequency intermittent noise
The subway goes right under my building. 
Better Sound For Free!
I applied DeOxit to clean my RCA connectors, that was a nice improvement. 
Let's talk power cords
My brain tells me power cords make no difference.  My ears tell me they do. 
high frequency intermittent noise
@whart There is now cell phone reception in the subways too.  So each subway car or perhaps the subway tunnels are lined with these devices. 
high frequency intermittent noise
Here is another recording taken early in the morning with no subway cars under my building:https://clyp.it/ae0xgczb Note there are 2 noises:The consistent hash/whineThe intermittent noiseThis is the worst I've heard it in the mornings.  It only la... 
high frequency intermittent noise
@toddverrone That’s a great find. Let’s say I get ferrite beads in place. I still have tubes out in the open where the audio signal goes through as well. I think there is no escape... 
high frequency intermittent noise
@jea48   No headphone output on my preamp.  I just dug out my pro-audio monitor too, plugged it into a different circuit and could hear the noise, though not as loud, and nothing was plugged into the monitor either, it was simply plugged into the ... 
high frequency intermittent noise
I put the PS Audio Noise Harvesters on the Furman P-2400 IT to see if they would stop blinking, they did not.  And when I turned on my light on a dimmer in the kitchen (different circuit), the PSNHs went crazy.  So does the Furman even do anything... 
high frequency intermittent noise
The Furman P-2400 IT has no affect on the noise.@jea48 I do not have a radio that is AC powered.  I will look into the RCA shorting plugs.I think this is an air borne issue - cell tower...