310 260 11029 3225

T-Mobile GSM monopole

This query yields 21 data points with strong signal at Austin Bluffs and North Union.

type='GSM' and enb=3225 and lac=11029 and signal > -65

The "red dot" for T-Mobile GSM 1227 is at the same intersection, but I see the best signal strength for it near Gossage Park