  We report on a measurement of the angular spectrum of the CMB between
$l\approx 100$ and $l\approx 400$ made at 144 GHz from Cerro Toco in the
Chilean altiplano. When the new data are combined with previous data at 30 and
40 GHz, taken with the same instrument observing the same section of sky, we
find: 1) a rise in the angular spectrum to a maximum with $\delta T_l \approx
85~\mu$K at $l\approx 200$ and a fall at $l>300$, thereby localizing the peak
near $l\approx 200$; and 2) that the anisotropy at $l\approx 200$ has the
spectrum of the CMB.
