On Sun, 19 Feb 2017 13:46:55 -0800, Jeff Liebermann wrote:

I don't want to comment on the T-Mobile signal booster due to lack of
experience with the device and general lack of info on what's inside.
If you can supply an FCC ID number, I might be able to excavate
something useful from the FCC ID data dumpster.

Just returned from a hike in the mountains. It's freezing in the mountains
today. You are sending cold winds from Santa Cruz over the ridges!

T-Mobile calls *everything* a "Personal CellSpot" so, this is a photo of my
signal booster from T-Mobile:
http://i.cubeupload.com/6Jpa5v.jpg

On the back of the existing devices are these FCC IDs:

1. Window Unit: FCC ID YETD24NU
https://fccid.io/YETD24NU
User manual: https://fccid.io/document.php?id=2270465

2. Coverage Unit: FCC ID YETD24CU
https://fccid.io/YETD24CU
User manual: https://fccid.io/document.php?id=2270512

What I'm mostly interested is in figuring out how to tell if they're
working, since I can't seem to get different results with or without them
hooked up (and, of course, with the femtocell connected to my router turned
off).

I'm guessing based on the experimental results (which could be misleading)
that they just pass through the cell tower id.