  We present 11 detections of FRB 121102 in ~3 hours of observations during its
'active' period on the 10th of September 2019. The detections were made using
the newly deployed MeerTRAP system and single pulse detection pipeline at the
MeerKAT radio telescope in South Africa. Fortuitously, the Nancay radio
telescope observations on this day overlapped with the last hour of MeerKAT
observations and resulted in 4 simultaneous detections. The observations with
MeerKAT's wide band receiver, which extends down to relatively low frequencies
(900-1670 MHz usable L-band range), have allowed us to get a detailed look at
the complex frequency structure, intensity variations and frequency-dependent
sub-pulse drifting. The drift rates we measure for the full-band and sub-banded
data are consistent with those published between 600-6500 MHz with a slope of
-0.147 +/- 0.014 ms^-1. Two of the detected bursts exhibit fainter 'precursors'
separated from the brighter main pulse by ~28 ms and ~34 ms. A follow-up
multi-telescope campaign on the 6th and 8th October 2019 to better understand
these frequency drifts and structures over a wide and continuous band was
undertaken. No detections resulted, indicating that the source was 'inactive'
over a broad frequency range during this time.
