6M FM mobile operation tends to be less bothered by hill & valley drop out. We have done extensive testing here in the Washington * DC area using 52, 146, 223 & 449 FM with identical mobile antennas & power out, communicating directly with home stations. A separate wide coverage 220 repeater was used to coordinate the testing. 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. Admittedly we did not do any testing in a metro environment, where the higher freqs (440?) may yield better coverage due to building reflections. Our testing was performed strictly in open country of Maryland and no. Virginia. 73, Charlie k3ICH
* Potomac Area VHF Society, tests done in the early 70's -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Edward R Cole Sent: Tuesday, August 22, 2017 11:54 AM To: Elecraft Reflector <elecraft@mailman.qth.net> Subject: Re: [Elecraft] [KX3] Band Plans No problem if you come to Alaska. Most 6m activity is 50 - 50.300, 52.525 and one repeater in Anchorage on 52.81 (51.11 input) which is not usable 100km (65 mi) south of Anchorage using a 24-foot high J-pole (only 20% quieting) and requires over 100w to access. In my opinion 6m ground-wave s**ks when compared with 2m or 222. Anchorage has a 224.94 (223.34) repeater that runs S9 over the same path. Propagation on 222 often exceeds that on 2m (we get frequent inversion layer wx). I run 30w on 222 FM with a new Bridgecom radio (traded my 222-28 transverter since there was no CW/SSB activity). I have a 150w amp on 222 for those that use only a HT and "wet noodle" antenna. 222 is the "overlooked" ham band by mfr's - a real shame! BTW the KX3 works very well on 6m (receive sensitivity with PRE on comparable with my K3+PR6). It drives the KXPA100 just as nicely (even nicer with remote control line using the KXAT100 for mobile HF/6m). 73, Ed - KL7UW ______________________________________________________________ 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
