Ditto to the above. You could consider a patch cable to a vertically aligned 1/4 to 1/2 wave vertical dipole for better performance.
https://linxtechnologies.com/wp/wp-content/uploads/ant-916-cw-qw.pdf
https://linxtechnologies.com/wp/wp-content/uploads/ant-916-cw-hw.pdf
Be aware, the SMA connectors buyable from Cris are RP-SMA. I have a pile of plain SMA connectors so I use those on all my Egg Stuff. Try and tune the Egg transmitter to the lowest VSWR for the given antenna to wring out all the
performance that you can. Do not expect to receive "every single" position from these low powered 900Mhz trackers. Once the rocket is under the main chute and the descent settles down, that is the time where most of the
positions are decodeable. If fact, if one can afford to blow the main up higher, the chances of better reception is much higher.
If your rocket is expected to stay close by or within sight most of the flight, you shouldn't have an issue. Why bother with a GPS tracker then? If there is a lot of high vegetation it can be a rocket saver even if you get a visual on where it landed.
In that case, best to attach a screamer to the harness too. A GPS tracker is a bit of insurance and peace of mind if one's rocket flies off the expected profile and stays out of sight a little too long Kurt