[Elecraft] Help with IF Noise, DSP Noise, NR settings

[W2xj]

That’s the one. The problem is the WECC map does not have many geographic references. Just distribution stations and converter stations. The other line you referenced is 345 KV according to the WECC map. It Sierra Pacific power. 

Sent from my iPhone

> On Jun 16, 2019, at 13:58, Fred Jensen <k6dgw at foothill.net> wrote:
> 
> Ummm ... actually no.  The line next to us is 2 3-phase AC circuits, based on the size of the insulators, one is 500 KV and the other is 230 KV.  Both are definitely AC, I've seen the transformers they both come from at the power plant at Patrick NV.  Each conductor consists of two parallel strands and there is a lot of anti-corona hardware on the insulators which may account for why it is relatively quiet.  The K3 NB is essentially ineffective against its noise, which is quite obvious on the P3.
> 
> I believe you are referring to "Path 65," aka the "Pacific DC Intertie."  In the south, it terminates at a large switching/converter station in Sylmar CA north of Los Angeles right next to I-5.  It runs north through the Owens Valley [adjacent to and often crossing US 395] and terminates in a switching/converter station near The Dalles, OR.  It's primary purpose is to carry plentiful [and cheap] electricity from the Columbia River south to Southern CA.  It crosses I-80 near Fernley NV, 20 or so minutes east of us.  It is distinctive because it has only two conductors and, except for the dead-ends at direction changes, is generally on very simple pylon towers.  I attached a photo from Wikipedia which may or may not come thru.
> 
> Path 65 is very quiet, essentially no change in noise when driving under it.  I believe it normally operates at +/-500 KV, but can also be operated against ground at between 700 KV and 1 MV.  The earth electrode for the Sylmar converter station is submerged in the Pacific Ocean west of the station.  It's not quite pure DC, there's a 12-phase 720 cycle ripple on it from the rectifiers.
> 
> 73,
> Fred ["Skip"] K6DGW
> Sparks NV DM09dn
> Washoe County
> 
>> On 6/15/2019 10:55 PM, W2xj wrote:
>> Looking at the MECC map, I’m pretty sure the 500 KV line is +- 500 KV DC so that would by itself make it pretty quiet. 
>> 
>> Sent from my iPad
>> 
> 
> <Tower.jpg>