Hi Michael, Thanks for that report, good to see we've improved the SM1000 "squelch" and thanks for the feedback on your low SNR tests.
Steve and I are working on some modem improvements for HF data work, that will hopefylly lead to some new HF voice modes with even better HF performance. Cheers, David On 8/6/20 11:37 am, Michael Carey wrote: > Hi David (et al), > > I have been doing some testing with the new V4 SM1000 firmware over the > last week and it has indeed solved the "burble problem" I was > experiencing with V3 firmware with background SSB noise. > > 700D decodes well down into the noise floor (using FreeDV together with > HPSDR/PowerSDR as the signal source). It's amazing how well it does > with a low SNR. I can barely distinguish the 700D signal within the > background noise (QRN & QRM) but the SM1000 still happily decodes with > the occasional audio glitch. > > Well done! > > Michael. > VK5LN/VK5ZEA > > On 21/05/2020 6:17 pm, David Rowe wrote: >> Hi Michael, >> >> I've been working on this one. One thing lead to another and I ended up >> refactoring all of freedv_api.c which was getting out of hand with all >> the modes that had been added over the years: >> >> https://github.com/drowe67/codec2/pull/111 >> >> So as well as testing the SM1000 we'll need to test a new version of >> FreeDV GUI shortly :-) >> >> Anyhoo, some new v4 firmware for you (and anyone else) to try: >> >> >> https://github.com/drowe67/codec2/blob/master/stm32/doc/sm1000_manual.md >> >> It's been running all day here right next to me (I'm WFH) without a >> single noise. In fact it's a bit _too_ quiet, although I can see the >> sync led flashing every few seconds as it gets a "maybe 700D" sync on >> noise. >> >> Cheers, >> David >> >> On 3/4/20 1:09 pm, David Rowe wrote: >>> Hi Michael, >>> >>> I've managed to reproduce the issue by setting up my FT-817 with a >>> SM1000, and some powered speakers so I could leave it running for a >>> while and hear it from the next room. It's "breaking squelch" for me a >>> few times a minute. Might be signal dependent too, ie what sort of >>> background signals there are on the band. >>> >>> Would be nice to fix this, so the SM1000 can be left running like a >>> squelched FM radio. >>> >>> I'll think about how to deal with this, will take a few weeks to fix. >>> >>> Steve - thanks for your suggestions too. >>> >>> Cheers, >>> David >>> >>> On 2/4/20 5:00 pm, Michael Carey wrote: >>>> Hi David, >>>> >>>> I've tried Rev 2 again and it doesn't seem to be much better. >>>> >>>> I can minimise the issue by reducing the audio level out of the IC-7100 >>>> Accessory connector (menu setting changed from 50% to 25%). >>>> The SM1000 still seems decode the transmissions from the >>>> FreeDV/HPSDR/PowerSDR setup fine with the audio output level reduced to >>>> 25%. >>>> >>>> What is the recommended (optimal) audio level expected at the input of >>>> the SM1000 with the RIG SPKR trimpot set midway? Is the flashing >>>> Clip/Error LED an indication of too much audio in? When does it's >>>> function change from Clip to Error? >>>> >>>> Michael. >>>> VK5ZEA >>>> >>>> On 2/04/2020 8:07 am, Michael Carey wrote: >>>>> Hi David, >>>>> >>>>> I don't recall having this issue with the Rev 2 firmware, but I am >>>>> going to "downgrade" today to compare. >>>>> >>>>> Still unsure of what triggers it... but when I disconnect my IC-7100 >>>>> from the antenna the issue is very much less pronounced. The smallest >>>>> amount of QRM (even inaudible to my ear) seems to make it worse. >>>>> >>>>> Michael. >>>>> VK5ZEA >>>>> >>>>> On 2/04/2020 6:20 am, David Rowe wrote: >>>>>> Hi Michael, >>>>>> >>>>>> OK thanks I will check this out over the weekend and get back to you. >>>>>> >>>>>> There's a TTY output that we can use to see what's going on (e.g. if >>>>>> it's getting false sync or breaking squelch). >>>>>> >>>>>> List: Is anyone else using the SM1000 with 700D experiencing this >>>>>> problem? >>>>>> >>>>>> Michael - was the problem present on the Rev 2 firmware? >>>>>> >>>>>> Cheers, >>>>>> David >>>>>> >>>>>> On 1/4/20 5:26 pm, Michael Carey wrote: >>>>>>> Hi David (et al), >>>>>>> >>>>>>> I loaded my SM1000 (Ref D) with v3 firmware today and it seems to be >>>>>>> working very well on air. >>>>>>> >>>>>>> My SM1000 is connected to an Icom IC-7100 using the accessory >>>>>>> connector, >>>>>>> SM1000 modified to give more audio drive into the ACC connector. >>>>>>> >>>>>>> I'm using FreeDV together with a HPSDR/PowerSDR to monitor and >>>>>>> transmit >>>>>>> back to the SM1000. >>>>>>> >>>>>>> The only thing I have noticed is that when in 700D mode, I get a >>>>>>> continual burbles and squeaks from the SM1000 when tuned to a free >>>>>>> frequency. The Sync and Clip/Error LEDs flash almost >>>>>>> continually. The >>>>>>> audio level from the radio into the SM1000 doesn't seem to make a >>>>>>> difference, very low audio levels from the IC-7100 into the SM1000 >>>>>>> seems >>>>>>> to make this happen. >>>>>>> >>>>>>> I get the occasional flash of the Sync and Clip/Error LED in 1600 >>>>>>> mode, >>>>>>> but until it actually starts decoding a 1600 transmission, it >>>>>>> remains >>>>>>> silent. >>>>>>> >>>>>>> 73 >>>>>>> >>>>>>> Michael >>>>>>> VK5ZEA >>>>>>> >>>>>>> On 9/03/2020 7:07 am, David Rowe wrote: >>>>>>>> Hello List, >>>>>>>> >>>>>>>> A few months ago Mal, VK8MT, spotted a few bugs in the SM1000 user >>>>>>>> interface. I have had a go at fixing them, integrating the >>>>>>>> latest 700D >>>>>>>> modem tweaks, and adding the automatic microphone equaliser: >>>>>>>> >>>>>>>> https://github.com/drowe67/codec2/pull/58 >>>>>>>> >>>>>>>> I've also tweaked the doco, adding links to the V3 binaries, and >>>>>>>> fixing >>>>>>>> a glitch in the example wiring diagram: >>>>>>>> >>>>>>>> https://github.com/drowe67/codec2/blob/dr-sm1000-tweaks/stm32/doc/sm1000_manual.md >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> If you are interested, please try it out over the air and let me >>>>>>>> know >>>>>>>> how it goes. >>>>>>>> >>>>>>>> http://www.rowetel.com/downloads/codec2/smartmic/sm1000v3.bin >>>>>>>> http://www.rowetel.com/downloads/codec2/smartmic/sm1000v3.dfu >>>>>>>> >>>>>>>> On power on you should hear 'V3' in morse, followed by the current >>>>>>>> mode >>>>>>>> (ANA for analog if it's a fresh reflash). >>>>>>>> >>>>>>>> Thanks, >>>>>>>> David >>>>>>>> >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> Freetel-codec2 mailing list >>>>>>>> [email protected] >>>>>>>> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >>>>>>> _______________________________________________ >>>>>>> Freetel-codec2 mailing list >>>>>>> [email protected] >>>>>>> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >>>>>> _______________________________________________ >>>>>> Freetel-codec2 mailing list >>>>>> [email protected] >>>>>> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >>>>> >>>>> _______________________________________________ >>>>> Freetel-codec2 mailing list >>>>> [email protected] >>>>> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >>>> >>>> _______________________________________________ >>>> Freetel-codec2 mailing list >>>> [email protected] >>>> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >>> >>> _______________________________________________ >>> Freetel-codec2 mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >>> >> >> _______________________________________________ >> Freetel-codec2 mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > > > _______________________________________________ > Freetel-codec2 mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 _______________________________________________ Freetel-codec2 mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freetel-codec2
