On Sun, 2017-01-22 at 20:22 -0500, Luke Berndt wrote: > Thanks again for all the help! It is great to be getting clear audio > and having things look right on the charts.
> - Luke You're welcome. One thing I forgot to mention, that might also help reception: Use antennas that are at least a quarter wavelength long with a good ground plane and halfway decent antenna cable. A 1/4 wavelength at 450 MHz is (299.8e6 m/s / 450e6 Hz) * 1/4 ~= 0.167 m ~= 6.6 in The stock RTL-SDR antennas are shorter than 6.6 in and are thus "electrically small". Amazon's stores have a few reasonable priced ones right off the first page of the search for scanner antennas: https://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Daps&field-keywords=scanner+antenna&rh=i%3Aaps%2Ck%3Ascanner+antenna https://www.amazon.com/1094-BNC-Scanner-Antenna-BNC-Male-Connector/dp/B01DUSBHDM/ref=sr_1_1?s=electronics&ie=UTF8&qid=1485176439&sr=1-1&keywords=scanner+antenna https://www.amazon.com/Scanner-Radio-Magnet-Mobile-Antenna/dp/B004C1T7PC/ref=sr_1_19?s=electronics&ie=UTF8&qid=1485176541&sr=1-19&keywords=scanner+antenna with enough cable to move the antennas farther from indoor UHF noise sources. -Andy _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
