At the FCC website, you can search for registered communications towers within a radius of a location.
https://www.fcc.gov/media/radio/asrn-within-radius <https://www.fcc.gov/media/radio/asrn-within-radius> There are 56 registered towers within 10 km of my house. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Aug 1, 2017, at 10:48 AM, Jim Brown <[email protected]> wrote: > > Thanks Jim. I live out in the country, at least 30 miles from any high power > AM BC, so haven't had this issue or evaluated that important capability. The > little FunCube Dongle Pro+ also has filtering, but I don't know how good it > is. It covers only 192 kHz at a time, but is 16-bits, so has greater dynamic > range. The SDRPlay RSP2 is probably more useful, thanks to its greater > display bandwidth. > > With any of these radios, N7WS's calibration method (or something like it) > should be used. Another suggestion -- take your test setup to a spot in the > middle of nowhere -- no buildings, no power lines, no solar or wind arrays -- > and look at the noise floor there. Save those data as a reference -- that's > your objective at a new QTH. > > Also, look around the area, and apply common sense. Are there houses? Farms? > Businesses? Radio towers? Cell towers? All are likely to have dozens of noise > sources, either now or in the future. My applications note on chasing RFI > talks about many of them. > > 73, Jim K9YC > > On 8/1/2017 10:21 AM, Jim Miller wrote: >> I have an RSP1 and it works well with the free software available to do >> spectrum work. I particularly like HDSDR's ability to make long term >> recordings. >> >> However I found it of limited use on 160m due to AMBC interference since it >> doesn't have much (or any?) front end filtering. I'm 30 miles north of >> Baltimore where the AMBC originates. >> >> I put a brickwall filter in front of it and it worked very well afterwards. >> >> I've recently bought an RSP2Pro which has better filtering in it which I >> hope will eliminate the need for the external filter. I haven't had time to >> even plug it in yet. > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
