<div dir="ltr">The FT3DR does indeed show the packet information on the display, including the lat/lon<div><br></div><div>Greg K7RKT</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Jan 31, 2021 at 2:31 PM wa7skg <<a href="mailto:wa7skg@wa7skg.com">wa7skg@wa7skg.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Working on getting more information. Big problem is the Kenwood radios <br>
have been discontinued and are no longer available. It looks like Yaesu <br>
is still making the FT3DR, but it doesn't look like it actually displays <br>
anything usable on the screen, making it of little value for on foot <br>
tracking.<br>
<br>
Michael WA7SKG<br>
<br>
spam8mybrain via aprssig wrote on 1/31/21 2:07 PM:<br>
> She should Google for "amateur rocketry" and "tracking". There have been <br>
> lots of discussion about different ways of getting GPS and telemetry <br>
> down from a rocket to a chase vehicle. Basically, it should be the same <br>
> as for a high-altitude balloon launch, just the flight stages will be <br>
> progressing faster.<br>
> <br>
> The issue is that most handheld radios don't have a good way to display <br>
> the information, even if the radio alone is capable of decoding and <br>
> interpreting the data without extra hardware. In that respect, the <br>
> Kenwood TH-D72 and TH-D74 are probably the best bet, as they can decode <br>
> APRS and display it on the radio screen, with even a <br>
> direction-to-station vector based on the receiving radio's own GPS fix <br>
> versus the APRS position report.<br>
> <br>
> Of course, this won't work if the rocket is using non-amateur <br>
> frequencies or not APRS protocol for the data. I actually added support <br>
> to my APRS client program to support a rocket using an ISM-band radio <br>
> link to forward the rocket's GPS data as raw NMEA sentences instead of <br>
> APRS packets.<br>
> <br>
> Again, she needs to find out more details about the downlink than just <br>
> "ham radio".<br>
> <br>
> Andrew, KA2DDO<br>
> author of YAAC ("Yet Another APRS Client")<br>
> <br>
> <br>
> -------- Original message --------<br>
> From: wa7skg <<a href="mailto:wa7skg@wa7skg.com" target="_blank">wa7skg@wa7skg.com</a>><br>
> Date: 1/31/21 16:43 (GMT-05:00)<br>
> To: TAPR APRS Mailing List <<a href="mailto:aprssig@lists.tapr.org" target="_blank">aprssig@lists.tapr.org</a>><br>
> Subject: [aprssig] Rocket Tracking<br>
> <br>
> I recently met a new ham who got her ham license because she is into<br>
> model rockets. She does the large scale ones that go thousands of feet<br>
> high. They have tracking and telemetry systems on board. However, she<br>
> doesn't know what it uses, just that it is ham radio. She wants to get a<br>
> handheld radio that will track her rocket. I'm going to guess this is<br>
> APRS. Anybody familiar with this? Any recommendations of what she should<br>
> get for a radio?<br>
> <br>
> Thanks.<br>
> <br>
> <br>
> -- <br>
> 73,<br>
> Michael WA7SKG<br>
> <br>
> "Any day you do not learn one new thing is a wasted day."<br>
> <br>
<br>
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</blockquote></div>