\
a
(ERIE)
Project 16,3 ~ Electromagnetic Measurements - R, E, Partridge
-adie the electromagnetic recording system was directed primarily
at measuring alpha.
‘Sufficient coverage was provided to record seven gener=
ations on two Rossi scopes, each backed up by a linear scope,
Sufficient gain
was provided to deflect the most sensitive scopes one-half scale with a field
strength of one millivolt per meter.
A relatively narrow-band antenna was
used, centered at 75 Mc,
A high radio noise background required reducing the gain by a factor of
four just before the shot to prevent contimucus triggering,
The exponential
form of the signal was masked by severe interference, predominantly near 50
M,o,
This probably was the Lookout Mountain voice countdown transmitter on
49,5 M.S,
The time interval system was operated as a dry run
All scopes functioned correctly.