Services
GRD
developed a unique designed OPA-1 antenna by applying antenna design
and electromagnetic propagation theory to conduct research, scientific
study and experimentation necessary to develop a R&D design and
Engineering Development Model of a multiband HF vertical antenna
capable of resonant operation without the use of a coupler or tuner in
four selected bands in the 5 to 30 MHz range for STRATCOMWINGONE
utilization at E-6 alert facilities. This design is very
inexpensive compared to commercially available antennas and in addition
does not required a coupler, which represents a new improved
capability for communications warfighters represented by the fact that
the antenna system has no active components and a resulting
unparalleled high efficiency and MTBF as compared to typical mast
antenna coupler/tuner systems. GRD also developed a SPA-2M
VLF/HF
receive antenna for applications at E-6 alert facilities and other test
Facilities used by the E-6 community. The SPA-2M is an active
antenna which provides receive capability from Very Low Frequency (14
kHz) to High Frequency (HF) above 30 MHz. At a height of only
8
½ feet the SPA-2M is exceptionally short for a VLF
antenna. The SPA-2M uses a VN‑88K Metal Oxide Substrate Field
Effect Transistor (MOSFET) preamplifier which provides both high
dynamic range and low noise figure.
|
