[Elecraft] [PX3] Bandwidth Question
I'm curious how the PX3 is getting nearly 200Khz of bandwidth from the I/Q out on the KX3. Using a really high quality sound card, I barely get 60Khz wide if that and there is significant roll off. Is there a hidden super secret high BW output magic trickery going on here? Anxiously awaiting shipment.. Chris K6OZY __ 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
Re: [Elecraft] [PX3] Bandwidth Question
Hi Ozy, At 200 KHz span, we're sampling 24 bits at 216 KHz and then using equalization to correct for the roughly 10 dB of roll-off which starts around 50 KHz . 73, Paul Ozy wrote I'm curious how the PX3 is getting nearly 200Khz of bandwidth from the I/Q out on the KX3. Using a really high quality sound card, I barely get 60Khz wide if that and there is significant roll off. Is there a hidden super secret high BW output magic trickery going on here? Anxiously awaiting shipment.. Chris K6OZY __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: Elecraft@.qth This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to lists+1215531472858-365791@.nabble -- View this message in context: http://elecraft.365791.n2.nabble.com/PX3-Bandwidth-Question-tp7592744p7592745.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: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
Re: [Elecraft] [PX3] Bandwidth Question
On 9/2/2014 3:41 PM, Chris Johnson wrote: I'm curious how the PX3 is getting nearly 200Khz of bandwidth from the I/Q out on the KX3. Using a really high quality sound card, I barely get 60Khz wide if that and there is significant roll off. Is there a hidden super secret high BW output magic trickery going on here? Yes. They fold the rest of the BW up into hyperspace. :-) Actually, I don't have a clue. 73, Fred K6DGW - Northern California Contest Club - CU in the 2014 Cal QSO Party 4-5 Oct 2014 - www.cqp.org __ 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
Re: [Elecraft] [PX3] Bandwidth Question
Hi Chris, You are doing something wrong if you only get 60 kHz.. My experience at least with win4k3suite, is that 192 kHz is pretty routine with any card that supports it. 73s Tom Original message From: Chris Johnson elecr...@ozy.us Date: 02/09/2014 18:41 (GMT-05:00) To: Elecraft List elecraft@mailman.qth.net Subject: [Elecraft] [PX3] Bandwidth Question I'm curious how the PX3 is getting nearly 200Khz of bandwidth from the I/Q out on the KX3. Using a really high quality sound card, I barely get 60Khz wide if that and there is significant roll off. Is there a hidden super secret high BW output magic trickery going on here? Anxiously awaiting shipment.. Chris K6OZY __ 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 tom...@videotron.ca __ 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
