NO, Pluto as well as LimeSDR perform quite well on all VHF, UHF and SHF bands. Variable preamp gain and/or total receiver gain of 50 dB and more guarantee the claimed 2.5 dB NF. Full-duplex capability is a great feature for satellite communication. Meanwhile approx. 30 percent of QO-100 traffic uses these small transceivers with big success. AD and Lime microsystems are no 'hawker's tray' companies and you can trust (or verify) their data sheet.
73, Helmut, DC6NY -----Ursprüngliche Nachricht----- Von: Steve [mailto:coupaydevi...@gmail.com] Gesendet: Montag, 10. August 2020 00:00 An: freetel-codec2@lists.sourceforge.net Betreff: Re: [Freetel-codec2] FreeDV data mode When the Pluto came out, I had to have one. Playing with it kind of left me saying "meh" because it didn't seem to have much RX gain. I needed a beam to focus on the transmitter. I then tried the LimeSDR-Mini but that thing only lasted about a year and then failed. Expensive junk. Comparably, the Pluto is much more hobby oriented with the ability to run Linux. Still running after several years. It's not cheap at $250 USD, but think of it as a Pi combined with a radio. On Sun, Aug 9, 2020 at 1:29 AM Adrian Musceac <kanto...@gmail.com> wrote: > > Hi David, > > I've watched with interest your recent foray into FreeDV data transmission. > There's a new and interesting project called HNAP (https://hnap.de ) which has the same goals (long distance IP links). The project is well described in this year's SDRA talk by Lukas O. > Inspired by both your project and theirs, I wrote a 4FSK data mode which has the following characteristics: > > - 100 kbaud, 1/2 convolutional code > - fits in a 200 kHz channel on the 70 cm and 23 cm bands (IARU region > 1 allocations) > - full duplex > - works with 50 watt FM amplifiers > - good SNR performance, 20 km point to point access distance tested > with small non-directional antennas > - carries layer 2 (Ethernet) frames > > Do you have anything planned for VHF as well? > > Best regards, > Adrian_______________________________________________ > Freetel-codec2 mailing list > Freetel-codec2@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 _______________________________________________ Freetel-codec2 mailing list Freetel-codec2@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freetel-codec2 -- Diese E-Mail wurde von AVG auf Viren geprüft. http://www.avg.com _______________________________________________ Freetel-codec2 mailing list Freetel-codec2@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freetel-codec2
