<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body>YAAC currently has this limitation. Should I remove it?<div><br></div><div>Andrew Pavlin, KA2DDO</div><div>author of YAAC </div><div>http://www.ka2ddo.org/ka2ddo/YAAC.html</div><br><br>-------- Original message --------<br>From: Robert Bruninga via aprssig <aprssig@tapr.org> <br>Date: 04/25/2016 5:07 PM (GMT-05:00) <br>To: aprssig@tapr.org <br>Subject: [aprssig] APRS Message Callsign SPEC- Ambiguity <br><br><div class="WordSection1"><p class="MsoNormal">There is an unintended ambiguity in the APRS SPEC regarding the addressee in the APRS MESSAGE format.</p><p class="MsoNormal"> </p><p class="MsoNormal">It was intended that the TOCALL of any transmitted message could be sent to ANY 9 character callsign field and this included mixed-case. Although TNC’s have historically forced callsigns to UPEPRCASE only, this is only a limitation of TNC’s and was not intended to be a limitation of APRS.</p><p class="MsoNormal"> </p><p class="MsoNormal">STATION names, OBJECT names, ITEM names were intended to be a general 9 character mixed case field in APRS padded to 9 with spaces.</p><p class="MsoNormal"> </p><p class="MsoNormal">We just noticed that some radios do not allow sending an APRS message to a mixed case address.</p><p class="MsoNormal"> </p><p class="MsoNormal">Unfortunately, the QIKCOM-2 satellite which does DTMF-to-Voice and APRS-to-voice has a special message address of “QIKCOMsay” for all messages it is expected to speak. So some people will not be able to exercise this text-to-voice messaging capability.</p><p class="MsoNormal"> </p><p class="MsoNormal">I wont make this mistake in any future satellite, but we are stuck with it. </p><p class="MsoNormal"> </p><p class="MsoNormal">SO, we might ought-to-identify all APRS radios and APRS clients that have this uppercase-only restriction on MESSAGE Callsigns.</p><p class="MsoNormal"> </p><p class="MsoNormal">I can say the Kenwoods have it. Others?</p><p class="MsoNormal"> </p><p class="MsoNormal">See <a href="http://aprs.org/aprs11.html">http://aprs.org/aprs11.html</a> and specifically, see:</p><p class="MsoNormal">See <a href="http://aprs.org/aprs11/aprs-names-and-spaces.txt">http://aprs.org/aprs11/aprs-names-and-spaces.txt</a></p><p class="MsoNormal"> </p><p class="MsoNormal">Bob, WB4APR</p></div></body></html>