The I/Q bandwidth is discussed in the "SDR Applications" section of the manual. I quote: The RX I/Q outputs from a receiver are not “flat” over an infinite frequency range; the signal-conversion process results in some slope (decrease in gain) as you move farther from the center frequency. In the case of the KX3, the signal will be reduced by about 2.5 dB at +/- 24 kHz, 4 dB at +/- 48 kHz, and 7 dB at +/- 96 kHz. The spectrum amplitude on the display, including the apparent noise floor of the receiver, will “roll off” by these amounts.
73, Matt VK2ACL On 08/06/2012, at 6:49 AM, DF5RF wrote: > The KX3 seems to have direct I/Q outputs to the sound card - which > sounds really attractive to me. > The manual says the span depends on the sound card sampling rate, like > 48/96/192kHz. But it does not tell what kind of band width one can expect. > As I read further, there seems to be a 15kHz limitation imposed by a > default roofing filter, and this will go narrow automatically under > certain conditions. > Again, what kind of span can I expect, and will it depend on any filter > settings or not? > Thanks and 73 > Gernot > DF5RF > K2 #2328 > ______________________________________________________________ > 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
