  We present dynamic spectra from the LWA1 telescope of two large meteors
(fireballs) observed to emit between 37 and 54 MHz. These spectra show the
first ever recorded broadband measurements of this newly discovered VHF
emission. The spectra show that the emission is smooth and steep, getting very
bright at lower frequencies. We suggest that this signal is possibly emission
of Langmuir waves and that these waves could be excited by a weak electron beam
within the trail. The spectra of one fireball displays broadband temporal
frequency sweeps. We suggest that these sweeps are evidence of individual
expanding clumps of emitting plasma. While some of these proposed clumps may
have formed at the very beginning of the fireball event, others must have
formed seconds after the initial event.
