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FREQ. RANGE (MHz) 

225-400 MHz 

GAIN (dBi, Min.) 

8.5 

POLARIZATION 

VERTICAL 

HPBW (Nom., deg) 

E-PLANE 55 DEG. 
H-PLANE 75 DEG. 

VSWR (MAX.) 

1.5:1 

TERMINAL: TYPE 
                 : IMPEDANCE 

“N” 
50 OHM 

MAX. POWER 

500 WATTS 

LENGTH 

79.50 IN. (201.93 CM) 

LONGEST ELEMENT 

26.75 IN. (67.95 CM) 

WEIGHT 

14 LBS. (6.35 KG) 

MOUNT 
          (MAST DIA.) 

 
Up to 3.00 in. (7.62 cm) 

WINDLOADING 
   (85 Knot with  
    1/2 in. (1.27 cm) 
    Radial Ice 
 

109 lbs. (49.44 kg) 

ELECTRICAL 

MECHANICAL 

Содержание LPD-12 225-400

Страница 1: ...tapered from the front of the antenna to the back and successive dipole halves are transposed along the antenna transmission line An internal cable in one of the crossarm sections functions as a balun to convert the balanced 50 ohm input at the front of the an tenna to 50 ohm unbalanced coaxial N type connector mounted at the rear of the antenna This internal balun effectively chokes off the surfa...

Страница 2: ...G H PLANE 75 DEG VSWR MAX 1 5 1 TERMINAL TYPE IMPEDANCE N 50 OHM MAX POWER 500 WATTS LENGTH 79 50 IN 201 93 CM LONGEST ELEMENT 26 75 IN 67 95 CM WEIGHT 14 LBS 6 35 KG MOUNT MAST DIA Up to 3 00 in 7 62 cm WINDLOADING 85 Knot with 1 2 in 1 27 cm Radial Ice 109 lbs 49 44 kg ELECTRICAL MECHANICAL ...

Страница 3: ...ning you should ground your equipment 1 To ground the antenna attach a ground wire under the head of the 3 8 16 x 3 1 4 in long hex head screw at the mounting bracket see Figure 2 Run the ground wire down the mast to a ground rod driven at least 4 feet into the ground 2 Keep the antenna and cable a safe distance from any power lines Antenna Mounting 1 Loosely assemble the two 3 8 diameter U bolts ...

Страница 4: ...Horizontal Mounting Bracket Detail ...

Страница 5: ... Element 9 60 in 2 21910 045 8 Element 10 30 in 2 21910 046 9 Element 11 05 in 2 21910 047 10 Element 11 85 in 2 21910 048 11 Element 12 80 in 2 21910 049 12 Element 13 75 in 2 21910 050 13 Element 14 85 in 2 21910 051 14 Mounting Bracket Vertical 2 28859 501 15 U Bolt 2 20041 001 16 Mounting Bracket Horizontal 1 28860 501 LPD 12 REPLACEMENT PARTS Spare hardware for these items is included for the...

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