Active
Radio Antennas
for Marine and Military
Applications
Active
Radio Antennas
for Marine and Military
Applications
For 30 years, Naval
Electronics has been a
recognized
design and manufacturing company for shipboard antennas and
CATV/MATV-systems.
The experience gained during this period, has gone into the new PR-400
series of active receiving antennas.
Care in design of
mechanical and
electrical
components ensures years of trouble free, high performance,
meeting
the very special demands put on shipboard antennas.
The PR-432 active
antenna
is optimized for AM-SW Band reception from 100 kHz to 30 Mhz and the FM
Broadcast Band of 88-108 MHz.
The antenna is omnidirectional and senses
vertical polarization.
Custom Active Antennas are routinly made at Naval for Military
Applications.
-Antenna factor Ka=0.16 with overall
length 0.85
m.
-High signal handling capability,
desensitization
1 dB at 10 V/m input.
-Low intermodulation.(IM3)
-External noise limited (50% probability
according
to CISPR 322).
-Machined marine and shot peened (ALMAG)
Aluminum alloy flange *
-Lightning arrester built in.
TECHNICAL SPECIFICATIONS
AM Frequency range (Mhz) 0.1-30
Output impedance* (ohm) 75
(optional
50 ohm)
Return loss (dB) >17 IP2 in (V/m) 1250 IP2
out
(dBm) +60
IP3 in (V/m) 150 IP3 out (dBm) +38
Antenna factor Ka 0.16 Antenna noise
External noise limited (50% probability
according
to CISPR 322)
FM Frequency range (MHz) 88-110
75 Return loss (dB) 8
Antenna gain (dBi) typ 3dB
AM-FM Overall frequency range (Mhz) 0.1-110
Polarization Vertical
Elements: Tuned and loaded Flexable printed circuits.
MECHANICAL
Coaxial connector * 75 ohm female F,
or 50
ohm
BNC (Specify Impedence)
Overall height 1 Meter
Base max dia. (mm) 60 OD
Mounting pipe dia. (mm) 45-50 (2 inch pipe)
Weight (kg) 1.65
POWER & ENVIRONMENT
Supply voltage DC (V) 15+17%
Supply current (mA) 115+10
Temperature range (C) -40 - +70
Ice Loading Strength 2" Radial in High Winds.
High Impact Strength: Thick PVC Radome is totallfy filled with 2-part
Plolyurathane Foam to protect internal amplifiers and elements from
shock and vibration.
Life expectancy: 10 Years + in extreme environments, marine and land.
* specify
Click here for detailed
drawing in pdf.
Click here to see video of
Flange Machining.
Compact Size - The PR-432 antenna is only 1 meter tall. The internal amplifiers make up for the relatively small size of the printed circuit receiving elements, delivering signals equal to much larger passive antennas. Output Impedance is a constant 50 or 75 ohms across the entire frequency range of the antenna, making an antenna tuner totally unneccessary. Omnidirectional reception pattern makes the PR-432 antenna perform equally on signals coming from all directions, while longwire antennas exhibit directionality.
In shortwave applications, short vertical antennas like the PR-432 demonstrate quieter reception with much less atmospheric noise than wire antennas, especially important on lower shortwave frequencies.
On the FM
Radio band
a remote
passive
antenna is subject to severe feedline losses, resulting in weaker
signals
at the receiver's antenna input. The internal low-noise amplifier of
the
PR-432 increases signal strength before any cable losses are
encountered,
delivering much stronger signal levels to the receiver. Passive
splitters
and directional couplers and outlets are available off the shelf with 2
and
4 outputs and pass the complete AM-SW radio band from 100 KHz and
higher.
Passives are ground isolated for use on ships.
Naval
develops
compact active receiving antennas on special order for Govt,
Military
and Aeronautical use.
SeaTel
Certified
Sales and Service (Large Commercial
TVRO VSAT Systems) SkyMex and Direct TV
Latin
America GLA DLA experienced
Gulf of Campache experienced International Travel and
Offshore, very Experienced WaveCall Internet at Sea
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