  We use optical frequency comb Fourier transform spectroscopy to measure
high-resolution spectra of iodomethane, CH$_3$I in the C-H stretch region from
2800 to 3160 cm$^{-1}$. The fast-scanning Fourier transform spectrometer with
auto-balanced detection is based on a difference frequency generation comb with
repetition rate, f$_{rep}$, of 125 MHz. A series of spectra with sample point
spacing equal to f$_{rep}$ are measured at different f$_{rep}$ settings and
interleaved to yield sampling point spacing of 11 MHz. Iodomethane is
introduced into a 76 m long multipass absorption cell by its vapor pressure at
room temperature. The measured spectrum contains three main ro-vibrational
features: the parallel vibrational overtone and combination bands centered
around 2850 cm$^{-1}$, the symmetric stretch ${\nu}_1$ band centered at 2971
cm$^{-1}$, and the asymmetric stretch ${\nu}_4$ band centered at 3060
cm$^{-1}$. The spectra of the ${\nu}_4$ band and the nearby
${\nu}_3$+${\nu}_4$-${\nu}_3$ hot band are simulated using PGOPHER and a new
assignment of these bands is presented. The resolved ro-vibrational structures
are used in a least square fit together with the microwave data to provide the
upper state parameters. We assign 2603 transitions to the ${\nu}_4$ band with
standard deviation (observed - calculated) of 0.00034 cm$^{-1}$, and 831
transitions to the ${\nu}_3$+${\nu}_4$-${\nu}_3$ hot band with standard
deviation of 0.00084 cm$^{-1}$. The hyperfine splittings due to the ${^{127}}$I
nuclear quadrupole moment are observed for transitions with J$\leq$2xK.
Finally, intensities of 157 isolated transitions in the ${\nu}_4$ band are
reported for the first time using the Voigt line shape as a model in
multispectral fitting.
