PR-422 Marine TV Antenna
The PR-422 is designed for High End Commercial and
and is based on a configuration of 3 circular dipoles (one is a special flexable printed circuit)
coupled to 3 parallel amplifiers ( 7 transistors ) via a separate broadband filter network.
Maximum performance is assured through use of a newly designed set of elements and
the extensive use of a Network Analyzer in the initial design and in the
final construction and tuning of each unit. Microwave transistors provide
needed gain with a minimum of internally generated noise.
Careful engineering and the use of very high quality
components yields excellent intermod performance and sharp hand tuned filters greatly reduce
the chance of interferrence from outside of the TV bands.
This compact and robust antenna incorporates a
shell made of
UV-ABS plastic which is injected with polyurethane foam to protect the
elements and EMI sheilded internal amplifier. The mounting base is cast from
Almag Marine Aluminum Alloy which is Shot Peened for extra strength.
Mounting hardware is made of stainless acid-proof steel.
The Shielded Low Noise Amplifier is protected from static charges and
is removable for field repair or replacement.
The PR-422 is at the head of a new 4000 Series
Amplifier System with ground isolated distribution passives introduced
in 1998. The Series 4000 is the result of painstaking engineering and
the use of state of the art components including high performance
GaAs Hetrerojunction Bipolar Transistors and MMIC devices.
PR-420 is identical to PR-422 but without AM-SW radio reception
PN: PR-420CA NSN:
PR-422 CA NSN: