Fantastic Information Chris, Yes, Flex did a good job with challenges of Pactor on the FireWire models settings conditional of course. As I found also the filters with these buffers are poor so the PTC has to do the hard work however it works and well. The SDR naysayers here were rocked somewhat to see a PTC going via Bluetooth on an SDR that I proved conclusively worked on the 3000 & 5000.
My not so scientific findings on the 1500 were observation only and I found also the switching time is just too slow (not by much) but enough not to hear the ack frame correctly. It will be interesting to see if this can be tightened up enough to allow a handshake. I am guessing the USB controller or driver may play a roll in this. As you say long path is not a workaround. Let's see where the thread of this post on the 1500 latency issue goes from here. Being such a "horny" little rig for HF digital modes it would be a great new years gift to see the Pactor Factor resolved. 73' James VK2JN ------------------------------ Sent from my iPhone ------------------------------ On 22/01/2012, at 7:42 PM, Chris Gerber <[email protected]> wrote: > Hi James > > I have here a selection of Flex SDR Radios and can state, that a Flex 1500 > want work for Pactor on > a PTC II or II plus, as the reponce time with even the smallest > buffersettings is to slow, even on LP > i had probelms setting it up, i use here 2 PTC II, one hooked to a SDR the > other to a > Icom 756 pro II which is very fast. > The responce time is never below 150ms (measured with the PTC II) on the > F1.5K, where with the > Flex 3000 and 5000 its working great, (PTC measured responce time 96ms) even > Amtor ARQ was possible, > but the buffersetting is very short, on both RX and TX, so the filters look > not at their best. > I have tested this from the beginning when the first Flex5000 came out, and > Flex did a fantastic job on > PWRSDR programming to made it work as it is now, since i first sent them the > scope pictures after the > outcom of the F5K. > > 73 Chris HB9BDM > >> 1. Pactor SCS ptc issue with Flex1500 ? (James Nelson) >> 2. Re: Pactor SCS ptc issue with Flex1500 ? (James Nelson) >> >> >> ---------------------------------------------------------------------- >> >> Message: 1 >> Date: Sat, 21 Jan 2012 13:05:29 +1100 >> From: James Nelson<[email protected]> >> To: flexedge<[email protected]> >> Subject: [FlexEdge] Pactor SCS ptc issue with Flex1500 ? >> Message-ID:<[email protected]> >> Content-Type: text/plain; charset=us-ascii >> >> Hi All, >> >> Has anyone made up the Flexwire 1500 Version 2 and tried Pactor successfully >> ? I certainly have tried with somewhat poor results. Describing the symptom >> goes like this... while it tries to make a connect it "appears" the >> listening time after transmit is not long enough to hear a complete >> "possibly" un-truncated frame and confirm a connect. >> >> Obviously the key is minimize latency buffers down to the wire and run the >> driver as "Agressive" however still no success. Even selecting "long path" >> within the software (in the test case Simple Gold32 and Airmail) it does not >> create a work around or resolution. >> >> Having used the 3000& 5000 big brothers successfully with buffer tweaking >> the QRP character of the 1500 lends itself to digital modes so well, >> naturally I am extremely eager to find a solution anybody ? >> >> 73' >> >> James VK2JN >> ------------------------------ >> Sent from my iPhone >> ------------------------------ >> >> >> ------------------------------ >> >> Message: 2 >> Date: Sat, 21 Jan 2012 17:42:13 +1100 >> From: James Nelson<[email protected]> >> To: Jerry Flanders<[email protected]>, flexedge >> <[email protected]> >> Subject: Re: [FlexEdge] Pactor SCS ptc issue with Flex1500 ? >> Message-ID:<[email protected]> >> Content-Type: text/plain; charset=us-ascii >> >> Thanks Jerry, >> >> Yes it's big ask for new SDR technology and it takes small buffers to >> achieve it on the FireWire models however I can confirm Pactor is no problem >> (settings conditional) for Airmail or RMS Express SimpleGold32 etc even >> throwing in the PTC's Bluetooth link option. To set up Pactor on the 3000& >> 5000 models see; >> >> http://kc.flexradio.com/KnowledgebaseArticle50422.aspx >> >> I suspect turnaround time maybe hampered by the USB dept. Latency is a very >> interesting subject as when the world went digital no one really noticed as >> in most areas latency tends to look after itself. Let's see what others have >> to say. >> >> 73' >> >> James VK2JN >> >> ------------------------------ >> Sent from my iPhone >> ------------------------------ >> >> On 21/01/2012, at 4:07 PM, Jerry Flanders<[email protected]> wrote: >> >>> I understand the rx to tx turn-around time (latency) of the flex rigs is >>> too long to allow Pactor. I am surprised the 3000 and 5000 worked for you. >>> >>> I think the ARRL's QST reviews address this in the specifications they >>> publish. >>> >>> Jerry W4UK >>> >>> At 09:05 PM 1/20/2012, you wrote: >>>> Hi All, >>>> >>>> Has anyone made up the Flexwire 1500 Version 2 and tried Pactor >>>> successfully ? I certainly have tried with somewhat poor results. >>>> Describing the symptom goes like this... while it tries to make a connect >>>> it "appears" the listening time after transmit is not long enough to hear >>>> a complete "possibly" un-truncated frame and confirm a connect. >>>> >>>> Obviously the key is minimize latency buffers down to the wire and run the >>>> driver as "Agressive" however still no success. Even selecting "long path" >>>> within the software (in the test case Simple Gold32 and Airmail) it does >>>> not create a work around or resolution. >>>> >>>> Having used the 3000& 5000 big brothers successfully with buffer tweaking >>>> the QRP character of the 1500 lends itself to digital modes so well, >>>> naturally I am extremely eager to find a solution anybody ? >>>> >>>> 73' >>>> >>>> James VK2JN >>>> ------------------------------ >>>> Sent from my iPhone >>>> ------------------------------ >>>> _______________________________________________ >> > > > > _______________________________________________ > Flexedge mailing list > [email protected] > http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz > This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used > for posting topics related to SDR software development and experimentalist > who are using beta versions of the software. _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using beta versions of the software.
