Type 9-33-26 VHF/UHF Broadband Antenna / 30 MHz – 512 MHz

The 9-33-26P3 VHF/UHF Broadband Antenna is designed to provide communications over the 30 MHz to 512 MHz frequency range for general purpose airborne applications. This VHF/UHF antenna is configured as a broadband fan monopole incorporating a frequency dependent matching network to ensure acceptable VSWR at lower frequencies, while preserving optimum gain at higher frequencies. A susceptance compensation network is included for gain enhancement at lower frequencies. The 9-33-26P3 is composed of a pressure molded composite radome housed within which houses the electrical assembly, and an aluminum alloy baseplate supports a single RF connector.

Features

• VHF/UHF broadband antenna
• Covers 30 MHz – 512 MHz frequency range
• Moulded composite radome with aluminum baseplate

Specifications

Weight:
1 kg

Dimensions:
331 x 66 x 173.5 mm, maximum

Aerodynamic Loads:
3500 kgf/m2 (5 psi) (minimum ultimate)

Aerodynamic Drag:
19N (1.95 kgf) at 250 knots EAS and 457.2 m

Mounting Configuration:
8 holes fixed location

Electrical:

Frequency:
30 to 512 MHz

Gain:
> -25 dBi @ 30 MHz
> -15 dBi @ 88 MHz
> -4 dBi @ 118 to 174 MHz
> 0 dBi @ 225 to 215 MHz

Polarization:
Predominantly vertical when mounted vertically

Radiation Pattern:
Omni-directional in azimuth

Power Rating:
25 W CW @ 30 to 174 MHz, maximum
45 W CW @ 225 to 400 MHz, maximum

Impedance:
50Ω, nominal

VSWR:
< 2.5:1

Connector:
TNC Type Female

Environmental:

High Temperature:
MIL-STD-810E, Method 501.3, Procedures I and II
Continuous Operational: 55°C
Intermittent Operational: 71°C
Storage: 85°C

Low Temperature:
MIL-STD-810E, Method 502.3,Procedures I and II
Operational: -54°C
Storage: -57°C

Altitude:
MIL-STD-810E, Method 500.3, Procedures I and II
Operational: 15,240 m
Storage: 15,240 m

Temperature Shock:
MIL-STD-810E, Method 503.3

Vibration:
MIL-STD-810E, Method 514.4, Procedure I, Category 4
0.01 g2/Hz 15 to 2000 Hz
L1 = 0.6 g2/Hz at 68 Hz

Shock: 
MIL-STD-810E, Method 516.4, Procedures I and V
Functional: 20 g, 11 ms, sawtooth
Crash Hazard: 40 g, 11 ms, sawtooth

Rain:
MIL-STD-810E, Method 506.3, Procedure I
Normal operation when exposed to blowing rain

Humidity:
MIL-STD-810E, Method 507.3, Procedure III
95% relative humidity at 60°C

Salt Fog:
MIL-STD-810E, Method 509.3, Procedure I
48 hours exposure to 5% salt solution

Acceleration:
MIL-STD-810E, Method 513.4, Procedure I
13.5 g all axes

Magnetic Effect:
RTCA DO-160D, Section 15, Category Z
Less than 1° deflection at 300 mm