  The CHIME/FRB experiment has detected thousands of Fast Radio Bursts (FRBs)
due to its sensitivity and wide field of view; however, its low angular
resolution prevents it from localizing events to their host galaxies. Very Long
Baseline Interferometry (VLBI), triggered by FRB detections from CHIME/FRB will
solve the challenge of localization for non-repeating events. Using a
refurbished 10-m radio dish at the Algonquin Radio Observatory located in
Ontario Canada, we developed a testbed for a VLBI experiment with a theoretical
~<30 masec precision. We provide an overview of the 10-m system and describe
its refurbishment, the data acquisition, and a procedure for fringe fitting
that simultaneously estimates the geometric delay used for localization and the
dispersive delay from the ionosphere. Using single pulses from the Crab pulsar,
we validate the system and localization procedure, and analyze the clock
stability between sites, which is critical for phase-referencing an FRB event.
We find a localization of 50 masec is possible with the performance of the
current system. Furthermore, for sources with insufficient signal or restricted
wideband to simultaneously measure both geometric and ionospheric delays, we
show that the differential ionospheric contribution between the two sites must
be measured to a precision of 1e-8 pc/cc to provide a reasonable localization
from a detection in the 400--800 MHz band. Finally we show detection of an FRB
observed simultaneously in the CHIME and the Algonquin 10-m telescope, the
first FRB cross-correlated in this very long baseline. This project serves as a
testbed for the forthcoming CHIME/FRB Outriggers project.
