ok,
heres a breakdown of some of the noise I get here.

powerline buzz. happens all across HF and has even been heard on 6 mters. Intensity varies as to other conditions (except on 80 and 160 where it is heard 24/7.

The Tivo is an older model 2511 using a first generation Sata drive. It produces a lot of birdies starting just below the 20 meter band. these birdies appear at random points up the rf spectrum from there and are quite strong throughout the 10 meter band. They are also seen on 6 meters and there are several of them on 2 meters. I know it is the source as I have shut it down once and tried to see if the birdies disappeared. they did. however, as the unit is my room mates, I don't have control of when it is on or not. 

now, there is another broadband noise source (its either a grow light or a plasma tv). it happens only in the evenings after about 8 pm and disappears sometime after 2 AM. Its loudest in 80 meters but is heard all over HF.

There are other noises too, but they don't appear often and never last long.

hope this helps.

DE n7zzt Eric

On Oct 15, 2015, at 7:57 PM, Phil Scovell wrote:

> Eric,
> 
> Is your noise on all bands?  I've missed some of the postings about your 
> noise.  I'm asking because several of us here in Denver have the same noise 
> that is loudest on 80 meters.  It tapers off on nearly the same frequencies 
> on the high and low ends with some of us being 20 and 30 miles apart.
> 
> Phil.
> K0NX
> 
> 
> 
> 
> ----- Original Message ----- 
> From: "Martin McCormick" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, October 15, 2015 8:24 PM
> Subject: Re: I Think I Know What Ham Radio in Hell Sounds Like.
> 
> 
>> When I wrote that message, I meant to write
>> 130-thousand-volt power substation. We do have 130-KVA feeders
>> coming in to Stillwater and they do cause quite a buzz, but
>> nothing like whatever this is that is eating up the air waves
>> somewhere near here.
>> 
>> Eric Oyen <[log in to unmask]> writes:
>>> grow lights are not the only noise maker. believe me, I have a plethora =
>>> of sources around my neighborhood. Firstly, the 12 Kv overhead power =
>>> lines. THose things buzz 24/7 and are particularly loud on 80 and 160. =
>>> That is not I can handle that with an MFJ-1025 noise cancellation unit. =
>>> Its some of the others that I have difficulty with (like the plasma TV =
>>> my neighbor has, or the Tivo unit out in the front room that throws =
>>> spurs all over the spectrum from 14 Mhz all the way up into the 2 meter =
>>> band. I need to make some recordings of all these types of noises and =
>>> see what you all make of them.
>>