  We report the discovery with the 100 m Green Bank Telescope of 65 ms radio
pulsations from the X-ray pulsar J0205+6449 at the center of supernova remnant
3C58, making this possibly the youngest radio pulsar known. From our
observations at frequencies of 820 and 1375 MHz, the free electron column
density to PSR J0205+6449 is found to be 140.7 +- 0.3 pc/cc. The barycentric
pulsar period P and period derivative determined from a phase-coherent timing
solution are consistent with the values previously measured from X-ray
observations. The averaged radio profile of PSR J0205+6449 consists of one
sharp pulse of width ~ 3 ms ~ 0.05 P. The pulsar is an exceedingly weak radio
source, with pulse-averaged flux density in the 1400 MHz band of 0.045 mJy and
a spectral index of ~ -2.1. Its radio luminosity of ~ 0.5 mJy kpc^2 at 1400 MHz
is lower than that of ~ 99% of known pulsars and is the lowest among known
young pulsars.
