Ok, you also have to find a sponsor or establish a crowd-funding :). Note, one-third of the Southern Hemisphere too including parts of the Antartic is already covered. Although retired since some time I believe that I still know what's going on in the world of communications (military and civil). But sorry, did't find a relation of 73 or MRFE6S9160, which is a nice NXP 1.2 GHz LDMOS. BTW I'm also using +40 dBm LDMOS on 2.4 GHz in my SDR uplink path to the satellite.
-----Ursprüngliche Nachricht----- Von: Al Beard [mailto:[email protected]] Gesendet: Sonntag, 13. September 2020 13:31 An: [email protected] Betreff: Re: [Freetel-codec2] TAPR FreeDV presentation by David Rowe, thanks And who is going to provide satellites for the other 2/3 of the world AND the Southern Hemisphere. Have you checked the commercial HF radio manufacturers lately and read up on the TWELP digital protocol? 73 is an electron tube/valve from the 1930s. MRFE6S9160 Alan VK2ZIW On Sun, 13 Sep 2020 13:05:43 +0200, Helmut Oeller wrote > Alan, you can outperform both, HF communications and VHF/UHF > terrestrial repeater, using advanced satellite technology like amsat > project QO- 100. We cover at least one-third of the globe just with > one satellite and lots of bandwidth even for tv. Hams should learn > from the commercials and leave their old tracks otherwise they will > become redundant. > > 73, Helmut, DC6NY > > -----Ursprüngliche Nachricht----- > Von: Al Beard [mailto:[email protected]] > Gesendet: Sonntag, 13. September 2020 07:13 > An: [email protected] > Betreff: [Freetel-codec2] TAPR FreeDV presentation by David Rowe, > thanks > > Thanks David, > > I listened at 5:30AM this morning to your presentation. > > Well done. > > The ionosphere can give a HF transmitter massive coverage far > exceeding the coverage of any VHF/UHF terrestrial repeater. > > But, this does not help with medium distance two-way communications. > > OH YES IT DOES, place a REPEATER at the above transmitter site. > > With "digital voice" two problems for a repeater are solved: > > 1) Is the signal valid? . . . . . . . . . . Presence of specific sync. > 2) Does the signal want to be repeated? . . Embedded data with the > voice. > > I see this as so so important, visionary. > > --------------------------------------------------- > Alan VK2ZIW > > OpenWebMail 2.53, nothing in the cloud. > > _______________________________________________ > 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 --------------------------------------------------- Alan VK2ZIW OpenWebMail 2.53, nothing in the cloud. _______________________________________________ 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
