LOL! Now, now L.C.! just hold on a minute there. If I didn't know any better I'd take that as an insult.
Yes L.C., as you'd suspect with a 104 year old house that there would be 12/2 two wire wiring at least somewhere, and it's true, the second level of my house is still with the old wiring, but with conduit.
However, most of the lower level has been upgraded. New 100 amp QO circuit box, and new 12/3 wiring, and new outlets, "with of course", CONDUIT! lol!
Sorry to disappoint anyone out here but I'm very against using cheap Romex, or Greenfield, better known as BX cable. Not only does it not provide a good ground, but it is also against code here. Let there be no mistake, I may be a bit behind in knowledge of RF and the sort, and although I will be human & tell you right now that I am not a know-it-all, I am fairly knowledgable in residential wiring, electricity, and electrical grounding. When your in the HVACR field, it's required. As I mentioned before, I just installed 60 amp service into my garage last summer. Outlets, conduit, 12/3 wiring & a 6 breaker Main lug circuit box with an additional double fused disconnect, all with the required (separate ground rod), and a 220 outlet with a 30 amp breaker, and a total of nine double flourescent lighting to add insult to injury.
All by my lonesome & a building permit.
But when one has problems with some kind of interference in their Radio, anyone will tell you that the electricians that first installed your electrical service when your house was built, Did not have our Dxing, quite reception, and trouble free noisless mains on their minds.
Now, getting back to the URL I posted, #2. to be exact, is not all about RF ground. It is mainly about AC Neutral Service Grounding. However, I'm not selling you short here as it does go on to tell you why it is not a good practice to be hooked into this type of ground, especially in transmitting applications. In which it does refer to RF interference by hooking into the AC neutral Service Ground. Your just asking for trouble period. Here's the Paragraph in black & white so we can all be on the same page here.
Quote for #2.
"Choose an electrode wisely. Don't use cold water pipes or AC service neutrals to achieve ground. both of these often travel very long distances before actually reaching earth ground, and they are often full of joint connections, corrosion, and dissimilar metal changes along the route. Making connections through these sources in transmitting applications frequently increases local interference because they become part of the radiation pattern at ground level. Grounding should always be done with the shortest distance to the actual dirt entry point where a rod may be driven. Ground rods come in many sizes but a length of 6 feet or more is highly recommended. Use rods that have a bright dipped copper clad finish to the steel core or solid brass for best long term results. Keep the earth around the rod wet as often as possible to increase effectiveness and dissipation capability". End of Quote.
Now I don't know about you, but I've got enough trouble with Inteference as it is. Now, as you told me to do, I am currently (as we speak), hooked into the AC neutral Service Ground (House Ground) as they call it. Yeah, my ground loop is gone, but I'm still getting that Crackling 60 Hz hum. Which is one of the few reasons why I'm on here every single night, causing such a big stink. 
(God help me) And no, I'm not the God guy from the other site either arguing about different metals. LMAO!
Like I've been telling everyone here, I'm not against doing something that someone has asked me to try. I'm not trying to sell anybody short either. I am using everyone's advice here, with a little of my own self action added in.
And let me tell ya, I don't have to wait, my head is, and has been spinning for two weeks now over this Humming interference that seems to be strongest on channels 3,4,5,6 & 7.
It may or may not be a 60 Hz hum at all. (But it most certaintly sounds like it) It may be from not having ground radials, or a Balun, or the proper shielded coax. In which I have all of these items in my possession now thank the Lord. I've also ordered two high quality Amphenol PL-259 connectors, Good 60/40 solder too. Yep, I'm doing it all! Oh yes my friend, I'm not stopping until I get to the bottom of this rediculous, but tideous, costly adventure.
And I'll tell you something else too L.C.
I'm really hoping that it is RF interference that is screwing up my precious hobby, and not the dreaded AC mains hum problem that could be doing me in.
As far as I know, eliminating Mains hum may or may not be able to be done. And to do it correctly, The power company technicians will have to be called in. Resulting in a radical dollar increase in my efforts to achieve 80 or 90 % noise free reception.
As far as I know, no-one has told me that my transmit was dirty or humming, which is in my favor. So there is hope. All I'm waiting on now is the Delrin Rod & the Amphenol Connectors and I'll be on my way with further information, resolutions I hope, and answers. Bet your bottom dollar too that I'm still waiting, (like Booty Monster) lol! for someone to produce clear, proven, evidence from a reputable source, that by hooking my ground up to the AC neutral Service Ground is the best or only choice. Especially when DX Engineering says not to.
So far, this article from DX engineering says specifically not to. And with good reason from what I've comprehended from the article. Let me say this last piece here before I sign off, as I said, currently, I am hooked into the AC Neutral Service (House Ground) as you specified. Currently, it seems to be ok. I will not deny it. But as I mentioned before a few days ago, I had my mast ground connected to the separate (Earth Ground) rod I placed 8' into the ground. At that time, either one, it did not matter, Neither produced any elevated noise, nor did either get rid of the noise. (the presumed crackling 60 Hz hum that is).
But here's the kicker, Like I also stated yesterday or so, all of a sudden, there was a nasty Ground Loop buzz when I returned my mast's ground cable to the (Earth Ground) rod. And take my left nut if I'm mistaken, but it was not there before at all from day one till about a week or so after I had my station up & running. Beats the H-LL out of me. So here I am, back on the AC Neutral Service (House Ground).
So much for choices in the matter eh? It's like someone is screwing me. 
So for now, here is what I'm going to do. "Like you said to do", Soon, I'm going to isolate the antenna, I'm going to replace that crappy unshielded gray coax I bought with a good grade of LM-400 with high quality Amphenol connectors. And as soon as my 8" diameter by 1' long PVC comes in, I'm going to put my Balun 1' or less from my feedpoint. I also purchased a snap on ferrite for the power cord of my radio.
I will eventually obtain a Polyphaser, but right now I'm kind of strapped, but it will come to past. Oh yeah, my GPK is in also. There's half my problem right there I bet. Oh yes L.C., Oh yes, I'm going all the way here. I will not stop. I'm also losing my mind! Now don't tell me it ain't obvious now. lol! Oh yes, I've totally lost it! BUT I FEEL GREAT! LMAO! 
PS: Anyways, my fingers are a hurtin now from typing, Work was a real devil tonight and it's time to put this o'l nutso to bed. Now what I should have done is hire someone to do a documentary on all this. There's no doubt in my mind that I've got the fever & I can't stop flappin my jaw 
Now there's a real problem
Later bud.
