Well, I received two HC-06 Bluetooth Modules last night from Amazon. I picked these up so that I could connect my Eggfinder LCD via Bluetooth to a Tablet and/or my Laptop. This would enable me to use real-time position plotting applications for tracking/finding my rocket.
The bad news...
I've spent far too much time fussing with them trying to get them to work with my Windows 10 Laptop. I can get them to pair and connect, then stay paired. However, I cannot seem to extract the NMEA 0183 GPS data from them using MapSphere. I have for a brief flash, seen MapSphere recognize a GPS connection at just 4800 baud, but then it fails and doesn't come back unless I reboot and perform a ritual that varys each time. I also found that I had been creating dozens of "ghost" Comm ports.. and was up to Comm 40 before I used a 3rd party tool to clean them up via Registry Surgery. So, I have given up on my Windows 10 Laptop for now. Perhaps there's an Eggfinder LCD Bluetooth Windows Guru out there who can tell me what I'm doing wrong. ;-)
The good news...
My old Android Tablet, a Samsung Galaxy III, is working nicely using either of the BT modules. I was able to pair with both HC-06's, and using an app called Bluetooth GPS, am able to get Eggfinder LCD GPS position data at roughly 1 Hz. I had my daughter run around the neighborhood and It tracked her nicely. I also installed Rocket Locator which initially did not work, and merely would display my position using WiFi to estimate my position. I don't think this inexpensive tablet has it's own GPS receiver. However, I learned that there is a option in the Bluetooth GPS app that allows you to "Enable Mock GPS Provider". With this enabled, Rocket Locator would then use the Eggfinder Bluetooth data.. and would track the position of the Eggfinder Tx nicely. I'll need to play with both of those apps to see what is most useful.