I sometimes see spurious signals at the 5kHz points when using my K7JTR 8 circle array. I tracked them down to powerful short wave station booming in when propagation is good. I think this is the curse of most broadband antenna sytems.
73, Roger On 8/13/2012 10:36 AM, Wayne Willenberg wrote: > Hello, > > As I am slowing working my way into 160M, I have been listening to my > new reversible 480ft Beverage antenna. > > I live in a rural area. However, there is one small town about 5 miles > from me. The only really strong BC station near me is a 500W (day time) > (not 5,000W) station at 1.490MHz. It is about 7 miles away. As I tuned > through the 160M band I found an image of that station at 1.915MHz. With > the Beverage, in the *NE position* the image reads -117dBm and if I switch > to AM mode, I can understand the broadcast. I don't see any other signals > on the 160M band. > > Is it normal to find images like this? > > B/T/W, when I switch to the *SW position* (the direction of the transmitter > and the small town), the signal power rises to -110dBm, but the noise floor > also goes up. Is it reasonable to assume the additional noise is probably > coming from the small town? > > Thanks to everyone who has helped me slowly build a 160M station. > > 73, Wayne KK6BT > _______________________________________________ > UR RST IS ... ... ..9 QSB QSB - hw? BK > -- Remember the Liberty (AGTR-5) http://www.usslibertyveterans.org/ http://www.gtr5.com/ _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
