Keith, what an awesome lesson, and I am humbled. I have watched this process and own a T2 and have watched it on the TNC/computer, but you summed it up in a few sentences with real examples. Hats off to your teaching talent. Thank you. John - kb4yfk, Williamsburg,va (kb4yfk-14 mostly.)
_____ From: [email protected] [mailto:[email protected]] On Behalf Of Keith VE7GDH Sent: Tuesday, July 14, 2009 11:35 AM To: [email protected] Subject: Re: [tracker2] Acknowledgement of message received. Adrian (callsign?) wrote... > Is there a way to test to see of the T2 is sending a acknowledgement > to the message sender? Currently persons sending me messages say > they never get an acknowledgement. Sure. Just power up another radio and a TNC and fire up a terminal program and watch what your T2 is sending while another station sends a message to the T2. If you studied the "APRS spec" so you understood the correct syntax, you could even send a message from that TNC to the T2. :<callsign> :hello...{01 You might see something like this in your terminal program: :VE7GDH-2 :hello...{01 VE7GDH-2>APOT21,SSI [07/14/2009 08:23:43]: <UI>: :VE7GDH :ack01 The first line was typed into a terminal program with the TNC in converse mode and with the MON ON in the TNC so I could see what was being received. The colon makes it a message. VE7GDH-2 was that station it was sent to. It happens to be using a T2-135.The second line is the ACK coming back from the other station via the digi SSI. It was sent to VE7GDH which was the station that originated the message. If you don't have another TNC, just connect your T2 to a terminal program and type "K" and hit enter to put it in converse mode and proceed to send a message to yourself. Don't forge to turn MON ON so you can see what if anything comes back. For it to work, you would need to hear your message coming back from a digipeater... e.g. PATH WIDE2-1 should hopefully get you to the nearest WIDEn-N digi. If he digi hears your message, and if you hear it coming back from the digi, your T2 should respond and try and send itself an ACK. It would look something like the following. :VE7GDH-2 :hello me...{05 <Digi Echo> VE7GDH-2>APOT21,SSI*::VE7GDH-2 :hello me...{05 >From VE7GDH-2: hello me... <Digi Echo> VE7GDH-2>APOT21,SSI*::VE7GDH-2 :ack05 It's too bad you didn't give your callsign (and the SSID in your T2) so we could have looked to see what your T2 was sending... including message ACKs if they made it to an IGate. Of course, you could just go to aprs.fi and look up the callsign in the T2 and look at the raw data. Again, you would have to be making it to an IGate for that to work. 73 es cul - Keith VE7GDH -- "I may be lost, but I know exactly where I am!"
