Re: [44net] Hamnet over 70cm : NPR (New Packet Radio)

OK.  Thanks!MichaelSent from my Verizon, Samsung Galaxy smartphone -------- Original message --------From: f4hdk <f4hdk(a)free.fr> Date: 3/25/19 12:50 (GMT-08:00) To: 44net(a)mailman.ampr.org Subject: Re: [44net] Hamnet over 70cm : NPR (New Packet Radio) Michael,1) I will try to make some measurement about minimum SNR, for each modulation, and add that to the documentation.2) Yes, the modulation is set once for the Master and therefore is imposed to all NPR-clients. If the client is not configured with the right modulation parameter, it cannot talk to the Master. With the radio modules that I use, based on SI4463, you cannot change this setting "on the fly".73,Guillaume F4HDKLe 25/03/2019 à 02:27, Michael Fox - N6MEF a écrit :> Guillaume:>> A few questions is I may:>>> Answer 2 : In order to achieve links with omnidirectional antennas, you>> have to lower the datarate drastically. In order to do so, I would need>> to change lots and lots of things in my protocol, which is not designed>> for such low datarates. Therefore, I will not make such a development,>> sorry.> Why does the choice of antenna pattern affect the data rate?>> Also, have you performed any testing to understand data rate vs. SINAD or> SNR?  If so, can you show what SINAD or SNR is needed to achieve each of the> modulations (13, 14, 22, 23, 24)?>> It appears that the modulation (13, 14, 22, 23, 24) is set statically in the> master and applies to all remotes.  Is this correct, or will the master> dynamically change modulation for each client, depending on SNR?>> Thanks much,> Michael, N6MEF>>>_________________________________________44Net mailing list44Net@mailman.ampr.orghttps://mailman.ampr.org/mailman/listinfo/44net