I guess you have registered for the necessary license
from the authorities in Jamaica?
They will have a frequency listing for Studio-Transmitter
Then you need to look around
for suitable low-power transmitters and receivers
for those bands.
The distance from your studio
to Tx site is short, but rainfall in Jamaica is
high at peak times in the wet season.
look for channels around 900MHz, and look out for
a shrouded yagi with a gain around 10dB, eg from
Another solution might be to lease
a DSL line or ISDN circuits from the PTT. Assuming
they offer you high reliability, that might be cheaper
and give you a better overall quality. I know a
commercial FM station owner in Germany who has leased
2xBRI ISDN circuits from Deutsche Telekom to do
this link. Although 1xISDN (Right stereo) + 1xISDN
(left stereo) at 64kbps each (ie BRI ISDN) was not
enough bandwidth, he rented 2 ISDN BRI circuits
at 128kbps each, and used one for the Left channel,
one for the right channel, and used the Q channel
at 9.6kbps for the station control data channel.