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Project 6.6 - Elecirumagnetic Attenuation Measurements - T. D. Hansconme
OBIRCTIVE
To xake electromagnetic attenuation measurements as a function of tine
at S-band (2260 MC) and 1~bend (9400 MC),
PROCADURS
Equipment used at this stot consisted of a treanamitter inetalled at
approximately 5000 feet from the tover on « line to the receiver in a tover
oo Parry.
The receiver cutput was delayed 2 sicroseconds and displayed on
oscilloscopes having sweep speed of 5 microseconds per centimeter, 50 picroseconds per centimeter, 200 microseconds per centimeter and on a Prush
recorder (resolving tine 10 aillsecccads).
box® signals,
Sveeps vere triggered by “blue
One receiving antenna was aimed at tte shot tower to observe
direct electromagnetic effect.
The receiver scope on this system was svept
at 5 microseconds per centineter.
BRSULIS
All equipment operated.
did not basper experiment,
Previously observed interference op S-band
I-bend signal dropped cut in 3 to 4 microseconds
and recovered to within 10 db of full eignal in 90 milliseconds.
deta not interpreted.
S-band
Shook arrived at about 400 nilliseconds.
BEST AVAILASLE COPY
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