HT-20 HF Transportable Short Range Antenna 2-30 MHz
Frequency Range: 2-30 MHz
Gain: (2 MHz) -16.9 dBi, (30 MHz) -3.0 dBi
VSWR: 2.0:1 max
Polarization: Primarily Horizontal
Pattern: Omnidirectional
Deployed Size: 27′x120′x27′
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Description
Applications:
The HT-20 is a lightweight transportable HF antenna that provides excellent radiation characteristics for short range 0 to 300 mile circuits. The lightweight rugged design and quick erection features are ideal for meeting rapid deployment requirements. The installed geometry minimizes land area usage and permits installation in the space constraints typically encountered in an operational area.
Features:
The key to the transportable design is the lightweight telescoping mast which collapses to a transport length of 63 inches for ease of storage and handling.
Characteristics:
The primary mode of propagation is HF Near Vertical Incident Skywave (NVIS) with the maximum radiation directed toward the zenith. The antenna provides broadband operation in the 2-30 Mhz frequency range with a maximum VSWR of 2:1. The 50 ohm input impedance is achieved by a mast-top mounted balun feeding the dipole elements. The antenna is rated at 1 kW average, 2 kW PEP input power.
Equipment Supplied:
Equipment supplied includes the telescoping mast, element wires, balun, terminations, accessory kit and canvas carrying bag.
Optional Equipment:
Transit case.
Spec Sheet
Spec Sheet
SPECIFICATIONS |
PERFORMANCE |
---|---|
Wind | 90 MPH with out ice, 50 MPH with .5 inch Radial Ice |
Humidity | 96 % with a temperature of 95 F |
Rain | MIL-STD-810, Method 506.2, Procedure I |
Salt Fog | MIL-STD-810, Method 509.2, Procedure I |
Input Connector | Type HN |
Azimuth Patterns, 16 to 30 MHz | +/- 3.3 Db Omni |
Azimuth Patterns, 2 to 16 MHz | +/-1.1 Db Omni |
Gain, 5 to 30 MHz | 0 dBi |
Altitude Operation | 12,000 feet |
Deployed Size, Feet | 150 x 150 x 22 |
VSWR, 5 to 30 MHz | 2.0:1 Max |
VSWR, 2 to 5 MHz | 2.3:1 Max |
Frequency Range | 2-30 MHz |
Power Capability | 3 kW Average / PEP |
Finish | 383 CARC Paint |
Stowed Weight Total | 385 lbs |
Gain, 2 to 3 MHz | -4 dBi Minimum |
Snow | 40 lbs / sq ft |
Stowed Size, #2 Transit Frame, Inches | 48 L x 16 W x 12 H |
Input Impedance | 50 Ohms Unbalanced |
Altitude Storage | 50,000 feet |
Temperature Operation | -60 F to +155 F |
Temperature Storage | -70 F to +155 F |
Stowed Size, #1 Transit Frame, Inches | 75 L x 19 W x 25 H |
Elevation Pattern, Above 8 MHz | Gain Max at Zenith |
Polarization | Horizontal and Vertical |
Solar Radiation | MIL-STD-810, Method 505.2, Procedure II |
Fungus | MIL-STD-810, Method 508.3 |
Sand | MIL-STD-810, Method 510.2, Procedure II |
Vibration | MIL-STD-810, Method 514.3, Procedure II |
Shock | MIL-STD-810, Method 516.3, Procedure IV |
Elevation Pattern, Below 8 MHz | Not Lower than 28 degrees Above Horizon |
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