Electronic Instrumentation for the Study of Air-to-Air Electromagnetic Wave Propagation at 250, 1000 and 3000 MC

Item

Title
Electronic Instrumentation for the Study of Air-to-Air Electromagnetic Wave Propagation at 250, 1000 and 3000 MC
Date
1952
Index Abstract
Coming Soon
Photo Quality
Undetermined
Report Number
WADC TR 52-268
Creator
White, Stanley B.
Corporate Author
Aircraft Radiation Laboratory
Laboratory
Aircraft Radiation Laboratory
Extent
53
NTRL Accession Number
AD004089
Identifier
AD0004089
AD Number
4089
Access Rights
Unknown
Distribution Classification
1
DTIC Record Exists
Yes
Distribution Change Authority Correspondence
AFAL LTR
Distribution Change Action Date
7/25/2001
Abstract
Electric instrumentation was developed for air-to-air propagation on measurements at 250-, 1000-, and 3000-mc ranges. A square-wave-modulated crystal-controlled transmitter for 245 and 1000 mc was used with an 18-c- bandwidth filter-amplifier and an APR-4 receiver, while a peak reader with an internally generated carrier was used with the receiver for short-pulse modulation measurements at 256, 2880, and 3295 mc. The rectified output from either the filter-amplifier or peak reader operated a recorder which continuously recorded the received signal on an approximately logarithmic scale. The receiving system using square-wave modulation detected and recorded 107-dbm signals and had a dynamic range of well over 100 db. The short-pulse receiving system detected and recorded signals down to the noise level of the receiver, and had a dynamic range of over 85 db. The 2 systems operated satisfactory with existing radio and radar equipment.
Report Availability
Not available via Contrails
Date Issued
1952-08
Index In
DTIC
Type
report