<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:13px"><div> </div><div>I picked up a second unit and it apparently had an ancient bit of firmware on it. I didn't get the date but</div><div>Chirp would read a frequency off of it. I flashed to the 12152014 firmware and Chirp isn't able to read it.</div><div>So, it's a firmware issue. Also the transmit delay can't be changed but that's a Sainsonic issue and not</div><div>Chirp. I may try flashing to an older firmware. </div><div> </div><div>Location is here:</div><div> </div><div><a href="http://www.radioddity.com/us/avrt5-aprs-tracker-vhf-with-gps-bluetooth-thermometer-tf-card-support-aprsdroid.html">http://www.radioddity.com/us/avrt5-aprs-tracker-vhf-with-gps-bluetooth-thermometer-tf-card-support-aprsdroid.html</a></div><div> </div><div>Go to
"Downloads" and click on "<u><font color="#0066cc">AP510 APRS Software" . </font></u></div><div style="color: rgb(0, 102, 204); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 13px; font-style: normal; text-decoration: underline; background-color: transparent;">Rename to *.zip and unpack. I virus scanned and it's O.K. KC9LDH<br></div> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 13px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"> <div style="margin: 5px 0px; padding: 0px; border: 1px solid rgb(204, 204, 204); height: 0px; line-height: 0; font-size: 0px;" contentEditable="false"
readonly="true"></div> <font size="2" face="Arial"> <b><span style="font-weight: bold;">From:</span></b> Tom Hayward <tom@tomh.us><br> <b><span style="font-weight: bold;">To:</span></b> Kurt <ksaves2@sbcglobal.net>; Discussion of CHIRP <chirp_users@intrepid.danplanet.com> <br> <b><span style="font-weight: bold;">Sent:</span></b> Wednesday, February 11, 2015 7:57 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [chirp_users] SainSonic AP510<br> </font> </div> <div><br>On Wed, Feb 11, 2015 at 1:21 PM, Tom Hayward <<a href="mailto:tom@tomh.us" shape="rect" ymailto="mailto:tom@tomh.us">tom@tomh.us</a>> wrote:<br clear="none">> On Wed, Feb 11, 2015 at 1:11 PM, Kurt <<a href="mailto:ksaves2@sbcglobal.net" shape="rect" ymailto="mailto:ksaves2@sbcglobal.net">ksaves2@sbcglobal.net</a>> wrote:<br clear="none">>> Is the Linux version of Chirp unable to read/program the AP510? I'm using<br
clear="none">>> the provided cable. Kurt KC9LDH<br clear="none">><br clear="none">> The non-working example you gave is how I program my AP510 every time,<br clear="none">> from Linux. I've only verified it works with the latest 20141008 (rx<br clear="none">> free) firmware. Is this the version you have?<br clear="none"><br clear="none">As mentioned in a private email, Kurt actually has firmware version<br clear="none">20141215. Thanks for tipping me off--this is a new version I haven't<br clear="none">tested, and it was not released through the same channels as previous<br clear="none">versions.<br clear="none"><br clear="none">I flashed my AP510 with the new firmware and it woke up in a boot<br clear="none">loop. I was eventually able to get it to connect to the stock<br clear="none">programming software and load the default configuration. This tamed<br clear="none">it. This is a good indication that some significant internal
changes<br clear="none">took place between versions.<br clear="none"><br clear="none">I snooped the serial protocol a bit and found they modified the<br clear="none">command to put it into configuration mode. This is why Chirp is unable<br clear="none">to read your AP510. I have not looked much farther than this, however<br clear="none">I suspect they did not change the initialization on a whim, but to<br clear="none">prevent accidental programming with software intended for older<br clear="none">versions.<br clear="none"><br clear="none">I will need to take a thorough look at the new protocol before<br clear="none">updating Chirp. Hopefully I can support both the new and old protocols<br clear="none">concurrently, unlike the stock software.<div id="yqtfd47254"><br clear="none"><br clear="none">Tom KD7LXL<br clear="none"></div><br><br></div> </div> </div> </div></body></html>