Question 4 might be, how much does the monthly service subscription cost? From reviews they were talking $25 a month.
Wow, that's a bit of a rip-off.
You can get prepaid wireless service for way less than that!
Earlier this year I flew my LOC rocket with 'Droid Mini (XT1030)' cell phone for a tracker.
You don't really need a dedicated SIM for that - just borrow one from your wife's/kid's cell phone for the duration of the launch, return it to them in the afternoon. You do need two (2) working SIMs to track the phone in the rocket from a working phone in your hand. So for me, the service was free.
If you don't have a friend/relative to loan you a SIM, you can buy prepaid service for significantly less than $25/month. Data usage will be minimal.
Then I bought and soldered together an eggFinder GPS kit because:
1). It's lighter (~20 grams), and can fit easily into a 38mm/1.5" nose cones vs. 2.5+" phone/tracker tube diameter requirements for phone.
2). It works anywhere, even where there is no cell coverage.
3). It transmits the data throughout the flight (and I can capture and store it on either an LCD screen, or a laptop), so should the transmitter land in a particularly unfriendly location without ability to send out the landing coordinates (or get smashed upon ballistic landing), I will still have data trail of its last known good reported locations, and will be able to plot the projected landing spot.
4). Eggfinder is one of the few transmitters that operates in unlicensed 900-930 Mhz spectrum, thus you can buy/operate it without Ham license or exams. Easy.
.................Or spend $150.00 for a Missileworks T3 and no relying on a cell phone service or subscription. That's about two of those cellphone dongle thingies. If you have the means to build, the Eggfinder and LCD will get the job done for a
sport flier easily. One can take these devices anywhere.
Misselworks is another great choice for low-weight ~900 Mhz unlicensed tracker.
It's slightly more expensive than Eggfinder, but you don't have to do any assembly.
Either one is a great choice.
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