NMR spectrometer question

Hello,

I have a friend who is thinking of making an NMR pulse spectrometer and
he
wants to know if he would be able to use GNU Radio and USRP1/2 to do
this.
He would be sending in RF pulses at the resonant frquency. The minimum
pulse width would need to be approximately 500 ns and the minimum
separation
between pulses would need to be around 5 us. From this post:

http://lists.gnu.org/archive/html/discuss-gnuradio/2007-02/msg00358.html

it seems like this will be doable with the USRP1. I have never tried
sending pulses from the USRP but I assume he would just use a vector
source.
If any of this seems out of place or raises any flags with anyone,
please
let me know.

Just wanted to double check this stuff before telling him that the USRP
and
GNU Radio could indeed do it.