The California Highway Patrol holds on to their 47 MHz frequencies for the same reason.
wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Aug 22, 2017, at 10:41 AM, Bob McGraw K4TAX <rmcg...@blomand.net> wrote: > > The Tennessee Highway Patrol still maintains their state wide systems, base & > mobile, in the 48/49 MHz range for this reason. > > Bob, K4TAX > > > Sent from my iPhone > >> On Aug 22, 2017, at 12:27 PM, Jim Brown <j...@audiosystemsgroup.com> wrote: >> >>> On 8/22/2017 9:25 AM, Charlie T, K3ICH wrote: >>> When you are operating purposely with relatively weak signals, as you go up >>> in frequency, the signal loss is much worse when you pop over a hill into a >>> small valley, which may be only a 20 to 50 feet difference in height, >>> where-as the lower freqs seem to "fill-in" better. >> >> UHF systems were so dominant in "flatland" Chicago that I didn't realize >> that systems in the low VHF region below 50 MHz existed. When I moved to >> California, I learned that these low VHF systems are widely used exactly >> because of this "fill-in" property, so necessary in the mountainous terrain >> of much of the state. >> >> 73, Jim K9YC >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to rmcg...@blomand.net >> > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
