=
DC trigger device loeatcd in the primary cathode follower and connected directly to the reesiving antenna.
The 2 microsecond delay
line was adicd to permit the lealing eige of the wavcform to be recorded.
In order to establish a definite time relationship between the
reception of the signal and the triczering cf a given device such as
&@ counter or transmitter, a time marker pip, gencrated by the delay
trigger from one of the oscilloscopes, is fed through the 2 microsecond delay line ani superimposed on the initial porticn of the reecived waveform,
Marry nm
The cathote follower tri
vo data abtainel for this shot since oscilloscopes hed already
been trigcserci by signal from PLATHM™AD,
Sinee there are two traces present in the photo it is assumed that
both FLATHEAD and BLACKFTOW traces are present.
Since the oscilloscope
Sensitivities had becn set for FLATH™AD, the trace cf PLACKTOOT is of such
a small amplitude that it is of qucstionable value.
trigger.
COPIED(nog
LANL pC
Ome scope did not