Cascadia dipole?

wow rabbi a 80 mile blanket compared to a 100 mile blanket that's the best you can do ??? your slipping in your old age..... get with it man... lol

 

I never witnessed 80 miles mobile to mobile under normal circumstances on flat ground. Seems to be common from that hotel parking lot near the Pilot though.

 

I just took a measurement of the mountain range that was in between us and this is what I came up with so would you still call it line of sight?
40.889895,-76.020923
GPS altitude : 1,736 feet

 

So based on the circumstances would you consider this ground wave propagation since it can be done in a predictable manner consistently every day?
By the way there was a mountain in between us that was a couple hundred feet higher than my transmitting location and about a thousand feet higher than the receiving location.
Both antennas were vertically polarized

 

Not all the time. The direction of the antenna seems to be more important than the polarization of the signal.

Brute force is not the correct term, you are not using 10000 watts to create DX in this case, many Military rigs using NVIS are using less than 10 watts and producing consistent communications up to 200 miles.

Not if there is a mountain in the way, the point of an NVIS type of a signal bounce as I am trying to explain. If it is a ground signal, then there should be no obstructions like a mountain with metal in it in the way.

 

The only thing that seems unusual to me is that if NVIS was occurring, I should be just as loud 45 miles down the road as if I was sitting right next to him it seems anyway. But at 4 Watts he was barely able to hear me but at 150 watts I was hitting him at 9 S-units. It doesn't seem like a single bounce would degrade my signal that much and if I was really bouncing why did the power increase makes so much difference?

 

Yes, it's line of sight ground wave.

If you have the exact locations of the transmitting and receiving stations, then I could give you an elevation profile between those two points.

There IS a means of communicating over an obstacle such as you describe, and it's called knife edge diffraction. Large terrain features (such as hills or mountains) are ideal for this type of propagation at the higher end of the HF band (CB frequencies included). THIS is where you benefit from higher transmit power levels.

 

It's important to note that NVIS is only reliable at frequencies between 1.8 and 8MHz. When you reach 27MHz, it's nearly impossible to communicate using NVIS.

 

Mark and I had a discussion about this about an hour ago and he agrees with you that this is perfectly consistent with ground wave propagation as my signal gradually faded as the distance increased.

 

Well I out of this thread, I can't debate people who have just done a little in RF and have all the answers.