PR-420 MARINE TV ANTENNA marine electronics, Tampa

PR-422 Marine TV Antenna

for Ships at Sea

The PR-422 is an Active Extra High Performance Omni-directional

wide-band Terrestiral AM-FM-TV Antenna ( 0.1-30 and 40-860 MHz )

for Maritime use where second rate efficiency is unacceptable.

The PR-422 is designed for High End Commercial and Military vessels
and is based on a configuration of 3 circular dipoles 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 thick
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 Clear Anodized. 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 Marine Cassette
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 radio reception

Technical Specifications:

Frequency range: 0.1-860 Mhz
Average VHF gain: 25 dB (amp)
Average UHF gain: tilt 16-20 dB (amp)
VHF Noise figure: 3.0 (amp)
UHF Noise figure: 2.5 (amp)
Active Components: 7 transistors
Max output level: 111 dBuV min (2 signals-60 dBIM)
Third order intermod products: >20dB IP3
Antenna factor: Ka = 0.12 AM
Filters: Band pass 100 Khz- 30 Mhz., 47-108 MHz.,
174-230 MHz.,470-860 MHz.
Broadband rejection filter:140-165 MHz.
Polarization: horizontal
Antenna pattern: omni-directional
Supply voltage to antenna: 15VDC nominal
Current consumption: 130 mA Nominal
Operating temperature: -40 to +55 C.
Protection circuits: static discharge device fires at 65 volts
Impedence: 75 ohm nominal
Connector "F" type Gold electroplate or BNC-75
Return loss: >10dB with optional output connector.
Radome material: UV protected ABS
Flange material: Stainless, Almag or Powder Coated Almag
Internal stabilization material: Polyurathane foam injection
Element material: copper foil
Element type: three looped dipoles with Z match pcb
Shipping Weight: 9 pounds with 50 ft coax and aluminum flange
Dimensions:width 44.5cm (17.5 in), height 44.5 cm (17.5 in)
Shipping container dim: 18 inches wide x 18 inches high

e-mail ..sales@naval.com