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MODELS | LP-1001 LP-1002 LP-1005 |
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| An antenna array with the Model T-3002 accessory | 25 KW ROTATABLE HF LOG PERIODIC ANTENNASNATO STOCK 5985-00-121-4334 (LP-1001) |
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The
LP-1001, LP-1002 and LP-1005 antenna arrays are designed for medium
and long range high frequency applications. These antennas provide
high reliability coupled with high efficiency while exhibiting low
VSWR and high, effective radiated power. They may be mounted on a
tower for fixed azimuth path applications or mounted atop a rotator
where multiple azimuths can be selected. The LP-1001 and the LP-1005
are log periodic dipole arrays consisting of linear dipoles from 6
through 30 MHz and inductively taper- loaded dipoles from 3 to 6 MHz
for the model LP-1005 and 4 to 6 MHz for the LP-1001. The LP-1002
is a log periodic array consisting of linear dipoles from 6 to 40
MHz. These antennas are all capable of 25 kW average power, 50 kW
PEP power. The design of these antennas results in arrays of minimum
physical size while providing a high efficiency antenna product. Additionally,
they are also designed to withstand the rigors of extreme environmental
conditions. The boom support structure is manufactured of 6061-T6 aluminum extruded members, secured with high strength stainless steel, galvanized steel and corrosion resistant hardware. The transmission line connecting the dipole elements is composed of a unique, balanced to unbalanced feed line, terminating in a standard EIA coaxial line. The coaxial portion is air dielectric with Teflon* spacers, separating the center conductor and outer conductor at specified intervals. It is recommended that the transmission line be pressurized with dry air or SF6 for high power applications. The extreme ends of all coaxial transmission lines are terminated with a 15 PSI relief valve, allowing for automatic line purging simply by increasing line pressure to beyond 15 PSI. All radiating elements are structurally tapered, telescoping aluminum tube sections providing minimum weight, consistent with maximum strength and minimum drag. The longest four elements on the LP-1001 and LP-1005 are base inductively loaded with helical copper coils, connected to their respective transmission line position and elements at stainless steel terminals. All element center insulators are composed of compressed laminate fiberglass for high electrical, as well as mechanical, strength. |
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Chart
1 Typical VWR for LP-1002 |
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Chart
2 Typical VWR for LP-1001 and LP-1005 |
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Notes Model T-3002 Heavy duty dual 80 foot tower structure with ground level rotator and remote control unit (DRC-3) and a 100 foot rotating mast. * Teflon is a registered Trademark of E.I. Dupont de Nemours & Co |
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