Jack, many thanks for this excellent information. I was running various things in the background, no cluster but lots of other stuff that I can stop when needed. Interesting you mentioned running in stereo. Before the contest I thought about trying the MultRX but assumed two signals arriving at the same time would confuse MMTTY. It never occurred to me to try TWO separate N1MM/MMTTY incidences. That might be real cool! I'll remember your 150 Hz trick too.
I am a long time MMTTY user but have not used it much the last year or two. I was surprised how well it decoded weak signals . I wondered if it was down to some of the tweaking Dave AA6YQ has made to Mako's original coding in the past year , but maybe what I was noticing how well a Flex does with narrow filter setting. Andy K3UK On Tue, Oct 1, 2013 at 7:44 PM, Jack Haverty. <[email protected]> wrote: > Hi Andy, > > I've been using a Flex-3000/N1MM/MMTTY for a few years now. It really > does work well. Welcome to the new world! > > It's a constant learning experience. Last weekend, I even used a 150Hz > filter to pick a weak DX station out from the middle of two strong local > ones. Worked great. > > As a next step, you might try configuring the interface as stereo, and > running two separate N1MM/MMTTY "Digital Interfaces", one on each VFO. It > is then possible to S&P along the band, listening to the exchange of your > current QSO while simultaneously decoding the callsign of the next station > you're going to call on a nearby frequency. Or watch for a break in a > nasty pileup while working other nearby stations. It requires a lot of > concentration - essentially a form of SO2R. But it works very well. > > Re latency: check to make sure that there isn't any other software running > on the machine. I've noticed decoding pauses also, which I traced to > another program running. Anything using the Internet in the background is > suspect. E.G., if you're collecting spots (even if there not being shown > in a visible window), the spot processing can cause the decoder(s) to pause > and then catch up a second or two later. Same with email etc. Also, try > setting your PowerSDR priority to "above normal". > > I use just a wire antenna on all bands. The Flex might help me about as > much as a beam helps others, so Unassisted seems fair..... > > 73, > /Jack de K3FIV > > > On Mon, Sep 30, 2013 at 6:30 PM, Andrew O'Brien <[email protected]>wrote: > >> It was a total pleasure to operate in CQWW RTTY, the first time using a >> Flex in a RTTY contest. (Single op. unassisted) . Seems to me that using >> a Flex may need to get re-classified as "assisted" since it was really >> easy >> to work lots of stations search and pounce. I did not operate more than >> 5-6 >> hours on Sunday , but the few hours I did operate were so EASY. >> >> I assume it is "old news" to regular Flex operators, but for the newcomer >> , >> here is how I set things up. I configured N1MM as per the usual >> instructions using VSP amd DDutil (Google this for info). I set N1MM to >> use MMTTY as the RTTY interface. I selected DIGL in PowerSDR and also >> selected a 300 Hz filter. In MMTTY/N1MM I set AFC to "ON". With the 300 >> Hz >> setting with AFC I had absolutely NO issues in then simply clicking in >> the >> middle of the two vertical lines in the Panafall and finding the station >> tuned in well enough to instantly start decoding. No "fine tuning >> needed". >> >> I used the "2X" setting in PowerSDR most of the time, "4X" worked well >> also. "1X" "0.5" gave you more spectrum to monitor, but the detail was >> too small to really differentiate between stations. >> >> I did run in to a few issues that may be related to latency but nothing >> major. Maybe I need to adjust some buffer settings. Quite a few times , >> after I had stopped transmitting, I would see may call sign then scroll >> across the N1MM screen. A few times I incorrectly thought it was a >> station >> coming back to me . Example >> >> 3UK G3RK de P5DX >> >> Also, a few times, a station responding to me could be heard stopping >> their >> transmissions but there was a 1-2 second delay for what they sent to >> appear on my screen. This only happened a few times , so perhaps my PC >> was >> a little sluggish at times. I'll work on the settings for next time. >> >> Lots of fun, >> >> Andy K3UK >> _______________________________________________ >> 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 innovation and other >> technical SDR topics. >> > > _______________________________________________ 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 innovation and other technical SDR topics.
