Jeff Scaparra <j...@scaparra.com> wrote: > How is [the PX3] any better than using the IQ out and computer?
Hi Jeff, A PC can work well, assuming it's fitted with a high-performance sound card, and that you're careful with cables and system grounding. This is sometimes hard to do, especially in a portable situation. But the PX3 has a true 200-kHz span, and in most cases it will out-perform sound cards in terms of dynamic range. The PX3 also has very low noise thanks to an optimal choice of A-to-D converter (most of them have in-band noise humps that come up above the noise floor). It also has special input circuitry that rejects common-mode noise between the RX I/Q jacks on the radio and the PX3, without the need for isolation transformers. Beyond that, there are some operators who prefer to have the spectral display right there where the action is, next to the radio. Turning on the PC can then be optional. The PC can still be used with the PX3 since we provide a way to daisy-chain both the control port (ACC1) and RX I/Q signals. 73, Wayne N6KR ______________________________________________________________ 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
