Look, there can be a vast difference between E-W and N-S with some unidentified stations, especially in an uncrowded portion of the band. When some guy comes onto a forum asking for help with an UNID station, a general bearing can get him in the ball park, which is basically what this is all about.
I think the problem here is that we've been talking somewhat at cross purposes. I was originally responding to
@MotoMOTRAC's attempt to triangulate the location of this station. This is something that requires a reasonably high degree of accuracy, which in turn requires somewhat specialized equipment. I assumed your response to me was in that context.
I don't at all disagree with you that vague "NE/SW" type directional information can be useful in reducing the list of possibilities. I do this all the time with my own listening. However, I don't think it's likely to be of any use in triangulating a transmitter position. So, "Seems to be on a line N/S from my location in Kansas City," would definitely be helpful in eliminating possible targets, but not likely of much use in determining what city a transmitter is in.
A number of years ago a strong carrier appeared on a frequency 1kHz away from one of the normal MW broadcast frequencies. A group I was in at the time made an effort to triangulate the location of the transmitter. I don't want to delve too deeply into this since this thread is about a station on 1670 and not triangulation using consumer radio gear, but it quickly became obvious that many people who are hardcore DXers don't actually understand how radio works. Nulling either the broadcast frequency station or the target transmitter would make the tone disappear, but most people didn't seem to understand this. This ended up with a lot of people reporting directional lines to the strongest broadcast station, not to the target rogue transmitter. In that case you really needed at least a radio capable of LSB/USB operation. That was different than figuring a general line to a live transmitter, but it was an eye opening experience.