Really? You're going to hang your hat on 5.000 - 9.003 = 3.997 ? Just get a calculator and push the buttons. It's -4.003. Every time! Nothing in the historical record changes this.
John, KU4AF Pittsboro, NC Joe Subich, W4TV-4 wrote > >> Working the sideband part into it with a 9 MHz USB signal and a 5 MHz >> LO - Suppressed carrier freq: 9.000 minus 5.000 = 4.000 3 kHz >> modulation tone: 9.003 minus 5.000 = 4.003 > > No, it's 5.000 - 9.000 = -4.000 and 5.000 - 9.003 = 3.997 > and it's 5.500 - 9.000 = -3.500 and 5.500 - 9.003 = 3.497 > > The VFO does not need to be the LO ... the IF can just as easily be > connected to the LO port. > >> Just as a sanity check, take another look at your own negative >> number example, Joe, and 'splain to me how 5.000 minus 9.003 gives >> minus 3.987. OK,I'll grant you a typo and assume you meant minus >> 3.997, but you're still wrong. It's minus 4.003. > > You're correct it's a typo *BUT* there is no error in the inversion > when the 9 MHz USB signal is applied to the LO port of the mixer. > All you need to do is spend some time with the historical record. > > 73, > > ... Joe, W4TV > > -- View this message in context: http://elecraft.365791.n2.nabble.com/US-60-Meter-Band-Changes-Approved-by-FCC-tp7011949p7022614.html Sent from the Elecraft 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:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
