  Nearly 300 quasars have now been found at $z >$ 6, including nine at $z >$ 7.
They are thought to form from the collapse of supermassive primordial stars to
10$^4$ - 10$^5$ M$_{\odot}$ black holes at $z \sim$ 20 - 25, which then rapidly
grow in the low-shear environments of rare, massive halos fed by strong
accretion flows. Sensitive new radio telescopes such as the Next-Generation
Very Large Array (ngVLA) and the Square Kilometer Array (SKA) could probe the
evolution of these objects at much earlier times. Here, we estimate radio flux
from the first quasars at $z \sim$ 6 - 15 at 0.5 - 12.5 GHz. We find that SKA
and ngVLA could detect a quasar like ULAS J1120+0641, a 1.35 $\times$ 10$^9$
M$_{\odot}$ black hole at $z =$ 7.1, at much earlier stages of evolution, $z
\sim$ 14 - 15, with 100 hr integration times in targeted searches. The advent
of these new observatories, together with the James Webb Space Telescope
(JWST), Euclid, and the Roman Space Telescope (RST), will inaugurate the era of
$z \lesssim$ 15 quasar astronomy in the coming decade.
