If the RTTY demodulator is of the FM type, i.e., a limiter followed by a discriminator (or, more likely these days, the software version of a limiter and discriminator) 3 dB difference between two signals could well cause the stronger signal to capture the limiter and suppress the weaker signal.
Exactly what happens with some of the more exotic DSP-based demodulation algorithms when the input is two signals differing by 3 dB but on the same frequency and with asynchronous data is a more difficult question. Jack On 9/23/2010 8:15 PM, Wes Stewart wrote: > Well, you know what they say about opinions. > > If you're jabbering away with some locals across town they might never know > the difference. But three dB can make a difference, especially on RTTY and in > contests. > > Try telling a contester that the Kilobucks he just spent to stack another > Yagi on his tower was a waste of money. > > --- On Thu, 9/23/10, Ray Sills<[email protected]> wrote: > > >> The difference in power between 50 >> watts and 100 watts is essentially >> insignificant. If you can't work 'em at 50 watts with >> the antenna >> you have... 100 watts ain't gonna make the >> difference. Period. 500 >> watts... 1KW.. OK.. maybe that'll help. >> >> Just because the rig can "take it"... the extra power and >> dissipated >> heat is just wasted. >> >> My opinion. >> >> 73 de Ray >> K2ULR >> FN20kg >> Warrington, PA > > > ______________________________________________________________ > 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 > ______________________________________________________________ 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
