<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body>
<div>NQ1X; KB1THK.</div><div><br></div><div><br></div><div><br></div><div><br></div><div id="composer_signature"><div style="font-size:85%;color:#575757">Sent via the Samsung GALAXY S®4, an AT&T 4G LTE smartphone</div></div><br><br>-------- Original message --------<br>From: K1FSY <k1fsy@vhfwiki.com> <br>Date: 11/03/2015 10:17 AM (GMT-05:00) <br>To: 450@lists.vhfwiki.com <br>Subject: Re: [450] Link back up <br><br>cool.<br><br>Everything you need to build it from git should be on there already, but<br>expect it to take a long time to compile :)<br><br>On 11/3/2015 1:21 AM, John Foege wrote:<br>> The link is back up for testing.<br>> <br>> RF input side audio has been *significantly* improved.<br>> <br>> TX audio out from internet still sounds great playing through the<br>> integrated broadcom soundcard.<br>> <br>> I believe the PTT line issue is solved now. It seemed to be RF getting<br>> in via the BUSY/RECEIVING data line coming out of the radio back to the<br>> raspberry pi. A partial fix was to wrap this line 10-20 around a ferrite<br>> core. This seemed to solved the instability issue about 80% of the time.<br>> As an added measure, I placed a pull-up resistor on the PTT line on the<br>> raspi side from +5V board input to the PTT line output on the ULN2003A<br>> driver. This should help to force the PTT line to a determinate state<br>> and should solve the intermittent PTT line issue 100%.<br>> <br>> We tried moving both input and output audio streams to the attached USB<br>> sound card, and this worked, however the USB sound card had noticeably<br>> inferior output audio (read clock noise), and thus we switched back to<br>> the raspi's integrated broadcom sound card for output audio, while<br>> retaining the attached USB sound card for input audio (from the radio<br>> back to the raspi).<br>> <br>> Next steps will be:<br>> <br>> 1) Complete backup of SDCARD image <br>> <br>> 2) Backup of svxlink conf files (git or svn repo)<br>> <br>> 3) Extensive testing of link in current configuration<br>> <br>> 4) Download and compile latest svxlink binaries and start w/ a simple<br>> vanilla conf w/ no extraneous bullshit<br>> <br>> 5) Documentation<br>> <br>> 6) Stacked loop install and testing<br>> <br>> Anything I miss? Any input, comments, feedback, etc?<br>> <br>> What calls need to be added that are not currently in there? Or calls<br>> that need to be modified?<br>> <br>> I will follow w/ most current access list.<br>> <br>> <br>> _______________________________________________<br>> 450 mailing list<br>> 450@lists.vhfwiki.com<br>> http://lists.vhfwiki.com/cgi-bin/mailman/listinfo/450<br>> <br>_______________________________________________<br>450 mailing list<br>450@lists.vhfwiki.com<br>http://lists.vhfwiki.com/cgi-bin/mailman/listinfo/450<br></body></html>