From mboxrd@z Thu Jan 1 00:00:00 1970 From: "qrv@kd4e.com" Subject: Re: [Ham-Linux] FreeDV (HF digital voice) for Ubuntu Date: Sun, 09 Feb 2014 15:03:11 -0500 Message-ID: <52F7DEFF.9070300@kd4e.com> References: <1391966195.30458.139.camel@fourier> Reply-To: qrv@kd4e.com Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1391966195.30458.139.camel@fourier> Sender: linux-hams-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: Cc: Linux Hams , Ham-Linux FreeDV is a valuable addition of a new & non-proprietary tool for Hams. I listened to the recorded QSO and observed two of the three key operating variables: 1. Significant saving of spectrum for FreeDV vs analog SSB. (+) 2. Significant FreeDV artifacts - muffled audio. (-) 3. Missing was an on-air comparison of SSB throughput in rough band condition and/or weak-signal performance vs FreeDV (The specs say "should be readable down to 2 dB S/N" but can you demonstrate the difference is real-world practice via another recording of a live QSO, please? Do you know if anyone has tested this with an Icom IC-7200 or IC-706MK2g? If so, what have been determined to be the best rig settings, please? (That sort of data would be good to gather on your Web site.) Thanks for this contribution to our hobby! 73, David KD4E > FreeDV ("HF Digital Voice for Radio Amateurs") -- http://freedv.org/ -- > is now available as an installable package for recent versions of > Ubuntu[0]. > > Many thanks to David Rowe and the rest of the upstream FreeDV team, and > to A. Maitland Bottoms for the Debian package[1]. > > > The freedv package for Ubuntu is available from either of these PPA's: > > Freedv PPA (and its prerequisites) only > https://launchpad.net/~kamalmostafa/+archive/freedv > > Ubuntu Hams Updates PPA (many backported ham packages) > https://launchpad.net/~ubuntu-hams-updates/+archive/ppa > > > 73 de KA6MAL > > -Kamal -- David (NOT Dave) Colburn, KD4E - Nevils, Georgia USA Safe & Secure Search Engine: duckduckgo.com Android for Hams: groups.yahoo.com/group/hamdroid Creative Tech: groups.yahoo.com/group/ham-macguyver Raspi Alternative: groups.yahoo.com/group/beagleboneblack/ Restored to design-spec at Heaven's gate 1Cor15:22