Hi Ev, Recording mp3 files and needing a SSB capable transmitter seems overly complicated for a beacon.
Have you considered something like this? rfzero.net 2m AB5N/b in AR has been running one of these for a few years now. It alternates between CW, carrier and FT8 every minute. Good luck with the project. 73, Scott AA5AM On Mon, May 20, 2024, 6:02 AM Ev Tupis via wsjt-devel < wsjt-devel@lists.sourceforge.net> wrote: > Hi Tim, > Thanks for the tip on using Opera or MSK-144! I can research both of > those in my quest! > > The script idea is a really good one when there is a dedicated computer to > control it all. In my case, I'm planning to use a simple MP3 player > sending audio into the mic jack and the transceiver's watchdog timer to > assure it doesn't go into eternal TX mode. > > I appreciate your feedback on the other two modes. I'm going to dig-in > there for a while to see what I can learn. > > Very best wishes, > Ev > > > On Sunday, May 19, 2024 at 10:08:58 AM EDT, Tim Urban via wsjt-devel < > wsjt-devel@lists.sourceforge.net> wrote: > > > Ev, > > > I transmit WSPR, FST4W, FT8, FT4 and MSK144 using a MP3 audio file and > precisely control the TX timing with a script. > > If you were only 1 ms "off" from "exactly 1-minute" your could run the > same audio for 2000 transmissions or 33.33 hours. > > If you plan to implement this in hardware only then a watchdog timer can > be used to provide the synchronization every 33.33 hours. > > Opera is a simple weak signal mode which requires no synchronization and > is (machine decodable). > > WSJT-X MSK144 is a mode which requires no synchronization and is > (machine decodable). > > > Tim N4WLO > > > On 5/19/2024 7:42 AM, Black Michael via wsjt-devel wrote: > > The other thing to remember is combining audio on multiple transmission > you have to decrease the power on each transmission. > Same thing happens the Fox/Hound mode in WSJT-X. Two transmissions at the > same time need half-power on each to combine them for example. > > So you'd have more power out of your beacon by playing round-robin. > If you run FT8 say on the top of the minute (and bottom) then squeeze your > other modes into the 15-second intervening period that would work. > Otherwise you'd have to have a GUI control to enable WSJT-X to transmit if > you other modes take longer than 15 seconds. > > Mike W9MDB > > > > > On Saturday, May 18, 2024 at 03:57:56 PM EDT, Lance Collister, W7GJ via > wsjt-devel <wsjt-devel@lists.sourceforge.net> > <wsjt-devel@lists.sourceforge.net> wrote: > > > Hi Ed, > > It sounds like you are at the forefront of developing a new beacon network > ;-) I > would suggest that you consider setting up your beacons to transmit FT in > the first > and third 15 seconds of each minute, with CW and SSB each in one of the > other two > sequences. As long as your transmitter is synced with UTC, people will be > able to > decode the FT8 sequences. > > GL and VY 73, Lance > > On 5/18/2024 18:37:28, Ev Tupis via wsjt-devel wrote: > > Hello all, > > Later this fall, I hope to install a constellation of multi-mode VHF+ > beacons. CW, > > SSB, and MD (machine decodable) all in the same transmission. > > > > My intention is to record the audio digitally (MP3) and drive a > multimode radio in > > "SSB" mode, playing it over-and-over. > > > > Is there a WSx mode that does not require the TXing and RXing stations > to be > > timeslot locked? > > > > I can always fall "back" to PSK31/63 or RTTY, but would like to explore > the WSx > > approach a bit before I do. > > > > If this is off-topic, I would be happy to receive off-list input, of > course. > > > > Thank you for the work that you do. > > > > Sincerely, > > Ev, W2EV > > > > > > > > _______________________________________________ > > wsjt-devel mailing list > > wsjt-devel@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/wsjt-devel > > -- > Lance Collister, W7GJ(ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, > 3D2LR, 5W0GJ, E6M, TX5K, KH8/W7GJ, V6M, T8GJ, VK9CGJ, VK9XGJ, C21GJ, CP1GJ, > S79GJ, TX7MB, TO7GJ, 3B9GJ) > P.O. Box 73 > Frenchtown, MT 59834-0073 > USA > TEL: (406) 626-5728 > QTH: DN27ub > URL: http://www.bigskyspaces.com/w7gj > Skype: lanceW7GJ > 2m DXCC #11 - 6m DXCC #815 - FFMA #7 > > Interested in 6m EME? Ask me about subscribing to the new Magic Band EME > email group, or just fill in the request box at the bottom of my web > page (above)! > > > > > _______________________________________________ > wsjt-devel mailing list > wsjt-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wsjt-devel > _______________________________________________ > wsjt-devel mailing list > wsjt-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wsjt-devel > > > _______________________________________________ > wsjt-devel mailing > listwsjt-devel@lists.sourceforge.nethttps://lists.sourceforge.net/lists/listinfo/wsjt-devel > > _______________________________________________ > wsjt-devel mailing list > wsjt-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wsjt-devel > _______________________________________________ > wsjt-devel mailing list > wsjt-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wsjt-devel >
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