Rich
Full Member
RF Systems Engr (retired)
Posts: 112
|
Post by Rich on May 29, 2018 15:23:19 GMT
Continued Inquiry...One must recognize the difference between ground lead and ground. ... True, because the electrical performance of those two parts of an r-f ground path are not the same. By definition, a true r-f ground (such as Earth) does not/cannot radiate e-m energy. However the complete conducting path of EVERY total length used to connect either real Earth or an "artificial r-f ground" to a device installed above the Earth CAN and WILL radiate e-m energy. That is provable Physics -- not a matter of opinion. This is the reason why the FCC includes the length of that "lead" (the total length of that conducting path) in the antenna length permitted by 15.219(b).
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on May 29, 2018 16:03:12 GMT
Classic RichTo jog your memory, it was you Rich who posted on part15us awhile back about suspended radials, located above the ground, and how they phase-out any radiation from the radial wires while providing an elevated ground-plane. ... That is true, and is not negated by my post here today about the radiation produced by r-f current flowing along an elevated conductor. We have come again to the same exception admitted the first time we went in a circle.
|
|
|
Post by Druid Hills Radio on May 30, 2018 11:45:26 GMT
Why Haven't We Been Told That Artificial Ground is a Possibility?The artificial ground described for this product could do wonders for part 15 medium wave. Artificial Ground DeviceHere's more on this puzzling topic: Follow the Ground Problem is this unit is for 1.8 MHZ and up. the AM band stops at 1.7 MHZ It will work fine on the top of the AM Band.
|
|