Considering the Dexcom for my 10 YO T1D son who is very active in team sports. I'm wondering how far of a range the transmitter has. For example, if I'm on the sideline of the soccer pitch and he's wearing the transmitter, how far away can he be for the handheld monitor to pick up the transmission? Also, if it drops signal because he's out of range, will it automatically re-link when he comes back in range?
On a related note, within the house, is there a range? I'm thinking it would be good to keep the monitor bedside and be able to get his CGM readings (and any alarms) while he's asleep.
From the manual, "Dexcom G4 PLATINUM: The all-new Continuous Glucose Monitor featuring an extended 20 foot range." I live in a smallish house and it can get from most every room. I would say 20 feet is about right. When you come back in range it comes back up within 4-5 minutes. So it keeps working.
I play tennis and leave the receiver at center court and have not lost signal. If it does go out of range usually within the next 5-10 minutes it picks back up again.
As a side note, I belong to a facebook group called CGM in the Cloud. It is a bunch of D parents who are not waiting for the FDA to approve the Dexcom Share and are instead just doing it themselves. There is a downloadable app for android cell phones and provided the receiver and phone are linked the results can be viewed remotely on any internet device including computers, tablets, Pebble watches etc. This allows parents or caregivers to check up on their kids' blood sugars at school, daycare, camp, sleepovers etc. I have the app on my phone and my husband can check in when he is out of town.
At night we keep the receiver on the back of our bed even though she is down the hall in her bedroom. However, we keep the bedroom doors open. The signal is fine and I would say it's about 20 feet away. As far as sports, you will probably be in and out of range during the game and it will come back on automatically when he is close enough. My daughter does trampoline and performs in a band and i get pretty good signals when I'm watching. Just my added opinion, a Dexcom is the best thing in the world!!!!
My son is very active (lots of competititive tennis at a fairly high level in his age category) and I almost never lose the signal when he plays. I also managed to keep the signal for all the soccer games he played during the Medtronic Cup selections (played on a half pitch). In ideal conditions, I certainly get 40 meters. In the heavily polluted wireless environment of my house, 15 feet is about the average I get.
My receiver works through almost the entire house, however if I leave it in the bathroom next to the granite backsplash, I sometimes loose the signal.
People more tech savvy than I could tell you better, but I BELIEVE that the receiver and transmitter "talk" to each other every five minutes or so. If the transmitter is out of range, it usually syncs up for me five minutes later IF I am in range.
I love my Dexcom CGM. It really helps with my hypoglycemix unawareness. It will also help you see trends. If your son's BG is faling, you will see it and can treat it so he doesn't go hypo. Just keep in mind that the readings are delayed approximately 20 minutes and they are approximated from the interstatial fluid. They are not derived from blood.
I take a very conservative approach. I will treat a low based on the CGM if I cannot get to my meter, however I do not treat a high unless I confirm it with a finger stick.