I have experienced intermod of local AM broadcasters as high up as 40m. I was using a 100 ft long wire up about ten feet. It was setup one way (E-W), and it wasn't noticeable, but when I turned it the other way (N-S), I believe that it may have interacted more with the power lines several hundred feet away (parallel with the lines). This is in an urban/suburban setting.
As a side note, I believe that the local power lines are carrying quite a bit of the local AM signals based on experiences I've had listening to AM on the car radio and being stopped at a light immediately under power lines. I'd be tuned into one station, and another station(s) would bleed right over it. So - your theory might be correct based on my experiences. 72/73 Daniel / AA0NI --- Tom Hammond <[EMAIL PROTECTED]> wrote: > Hi Rolf: > > I have noticed a similar thing for the past several years. > > I think what I'm receiving as 'noise' really might be either AM or FM > broadcast though... as it seems to have some small amount of modulation to > it. > > So far I have not been able to determine the cause OR the solution to the > problem... but it definitely IS there. > > 73, > > Tom Hammond N0SS > > > At 08:24 AM 7/12/04, [EMAIL PROTECTED] wrote: > >Dr OMs, > >currently, I am experiencing noise on certain frequencies while > >receiveing while no antenna is connected. To receive this noise, one has > >to touch the key connector. This noise can be heard on e.g. 7010 khz. We > >have experienced this noise with several K2 in our local ham club. Could > >this be a bad ground connection of the key connector? > > > >vy 73 de Rolf, DL8BAG, K2 806 > > > > > >_______________________________________________ > >Elecraft mailing list > >Post to: [email protected] > >You must be a subscriber to post to the list. > >Subscriber Info (Addr. Change, sub, unsub etc.): > >http://mailman.qth.net/mailman/listinfo/elecraft Help: > >http://mailman.qth.net/subscribers.htm > >Elecraft web page: http://www.elecraft.com > > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft Help: > http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
