Guy, Two db does indeed make a difference no matter what you or the Bell Labs results say, and that's why the search for an extra db or two continues for anyone interesting in contesting or DXing in noisy conditions.
A couple of years ago I generated some audio files to demonstrate exactly that. I recorded some scratchy band noise from 80m and mixed it with computer-generated CW of varying levels. Down at the noise level, even one db was perceptible and two db made a functional improvement. In a CW contest or in a pileup that could make a significant difference, although I'll admit that two db may not make enough difference for SSB (I also never tried it). I promised Pete I would clean up the audio files and send them to him for inclusion in the Contest Wikipedia ... I'm very delinquent on that but will try to do so within the next two or three weeks. Whether ANY increase in signal strength is worth the money required to achieve it is purely a function of the station owner and his objectives. For some folks, spending an extra $1K to $6K to get 12 db from an amplifier is not worth it. Others have obviously spent ten times that amount on towers and antennas to pick up just a few db. 73, Dave AB7E Guy Olinger K2AV wrote: > Let me get this right. You are looking for reassurance that money you > haven't spent will be well spent upping 100 to 150 watts. Perhaps > there is some part of you that doesn't believe it, or you would have > done it already? Maybe you should listen to the skeptic there. > > Well, if you do go spend it, your banker thanks you, your suppliers > thank you, but your operating savvy will dictate your success far more > than the extra watts. I can make a much better case for "the economy > needs it" than the far end. > > The Bell research DID involve accumulated noise and distortion on > multiple circuits switched in series to make longer circuits, and how > much then-manual maintenance could be needed based on customer's > perceptions of circuits. Multi-megabucks of expense per year riding > on it when gas was a nickel a gallon. So before you folks go > dismissing it.... > > The trick at a given ham station is the accumulation of a little here > and a little there, and yet. Eliminating loss at a half dozen places, > and size of feedline, gain of antenna, etc can ad up to dB's noone > argues about. > > 73, Guy. > > > On Fri, Dec 11, 2009 at 3:22 PM, Julius Fazekas n2wn > <phriend...@yahoo.com> wrote: > >> Thanks Frank! >> 73 >> Julius Fazekas >> N2WN >> >> Tennessee Contest Group >> http://www.k4ro.net/tcg/index.html >> http://groups.google.com/group/tcg1?hl=en >> >> Tennessee QSO Party >> http://www.tnqp.org/ >> >> Elecraft K2/100 #4455 >> Elecraft K3/100 #366 >> Elecraft K3/100 #1875 >> >> >> --- On Fri, 12/11/09, w4nhj [via Elecraft] >> <ml-node+4153253-1352068...@n2.nabble.com> wrote: >> >> >>> From: w4nhj [via Elecraft] <ml-node+4153253-1352068...@n2.nabble.com> >>> Subject: Re: 150 watt "boots" for 160m >>> To: "Julius Fazekas n2wn" <phriend...@yahoo.com> >>> Date: Friday, December 11, 2009, 2:30 PM >>> >>> >>> Communications Concepts can help. >>> www.communication-concepts.com/ >>> >>> >>> Frank - W4NHJ >>> >>> >>> >>> Julius >>> Fazekas n2wn wrote: >>> Wondering if anyone has a >>> suggestion of a solid state amp or "pushing" the >>> K3 PA to obtain 150 watts out on 160m? >>> >>> >>> A kit or HB would be fine... >>> >>> >>> 73, >>> >>> Julius >>> >>> n2wn >>> >>> >>> >>> >>> >>> >>> View message @ >>> http://n2.nabble.com/150-watt-boots-for-160m-tp4151943p4153253.html >>> >>> >>> To unsubscribe from 150 watt "boots" for 160m, click >>> here. >>> >>> >>> >>> >> ----- >> Julius Fazekas >> N2WN >> >> Tennessee Contest Group >> http://www.k4ro.net/tcg/index.html >> >> Tennessee QSO Party >> http://www.tnqp.org/ >> >> Elecraft K2/100 #4455 >> Elecraft K3/100 #366 >> Elecraft K3 #1875 >> -- >> View this message in context: >> http://n2.nabble.com/150-watt-boots-for-160m-tp4151943p4153559.html >> Sent from the [K3] mailing list archive at Nabble.com. >> ______________________________________________________________ >> 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 >> > ______________________________________________________________ > 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 > > ______________________________________________________________ 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
